<?xml version="1.0" encoding="UTF-8"?>
<!--XBRL Document Modified with Ez-Editor Version 1.1.0.1 on Friday, February 27, 2015 09:55:07 PM -->
<linkbase xmlns="http://www.xbrl.org/2003/linkbase" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:xlink="http://www.w3.org/1999/xlink" xsi:schemaLocation="http://www.xbrl.org/2003/linkbase http://www.xbrl.org/2003/xbrl-linkbase-2003-12-31.xsd">
<roleRef xlink:type="simple" roleURI="http://ucbi.com/role/ConsolidatedStatementOfIncome" xlink:href="ucbi-20141231.xsd#ConsolidatedStatementOfIncome"/>
<calculationLink xlink:type="extended" xlink:role="http://ucbi.com/role/ConsolidatedStatementOfIncome">
<loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_InterestAndDividendIncomeOperating" xlink:label="loc_us-gaap_InterestAndDividendIncomeOperating"/>
<loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_InterestAndFeeIncomeLoansAndLeases" xlink:label="loc_us-gaap_InterestAndFeeIncomeLoansAndLeases"/>
<calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_InterestAndDividendIncomeOperating" xlink:to="loc_us-gaap_InterestAndFeeIncomeLoansAndLeases" order="10" use="optional" weight="1"/>
<loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_InterestIncomeSecuritiesTaxable" xlink:label="loc_us-gaap_InterestIncomeSecuritiesTaxable"/>
<calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_InterestAndDividendIncomeOperating" xlink:to="loc_us-gaap_InterestIncomeSecuritiesTaxable" order="20" use="optional" weight="1"/>
<loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_InterestIncomeSecuritiesTaxExempt" xlink:label="loc_us-gaap_InterestIncomeSecuritiesTaxExempt"/>
<calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_InterestAndDividendIncomeOperating" xlink:to="loc_us-gaap_InterestIncomeSecuritiesTaxExempt" order="30" use="optional" weight="1"/>
<loc xlink:type="locator" xlink:href="ucbi-20141231.xsd#ucbi_FederalFundsSoldCommercialPaperAndDepositsInBanks" xlink:label="loc_ucbi_FederalFundsSoldCommercialPaperAndDepositsInBanks"/>
<calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_InterestAndDividendIncomeOperating" xlink:to="loc_ucbi_FederalFundsSoldCommercialPaperAndDepositsInBanks" order="40" use="optional" weight="1"/>
<loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_InterestExpenseDeposits" xlink:label="loc_us-gaap_InterestExpenseDeposits"/><loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_InterestExpenseNegotiableOrderOfWithdrawalNOWDeposits" xlink:label="loc_us-gaap_InterestExpenseNegotiableOrderOfWithdrawalNOWDeposits"/><calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_InterestExpenseDeposits" xlink:to="loc_us-gaap_InterestExpenseNegotiableOrderOfWithdrawalNOWDeposits" order="10" use="optional" weight="1"/><loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_InterestExpenseMoneyMarketDeposits" xlink:label="loc_us-gaap_InterestExpenseMoneyMarketDeposits"/><calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_InterestExpenseDeposits" xlink:to="loc_us-gaap_InterestExpenseMoneyMarketDeposits" order="20" use="optional" weight="1"/><loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_InterestExpenseSavingsDeposits" xlink:label="loc_us-gaap_InterestExpenseSavingsDeposits"/><calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_InterestExpenseDeposits" xlink:to="loc_us-gaap_InterestExpenseSavingsDeposits" order="30" use="optional" weight="1"/><loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_InterestExpenseTimeDeposits" xlink:label="loc_us-gaap_InterestExpenseTimeDeposits"/><calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_InterestExpenseDeposits" xlink:to="loc_us-gaap_InterestExpenseTimeDeposits" order="40" use="optional" weight="1"/><loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_InterestExpense" xlink:label="loc_us-gaap_InterestExpense"/><calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_InterestExpense" xlink:to="loc_us-gaap_InterestExpenseDeposits" order="10" use="optional" weight="1"/><loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_InterestExpenseShortTermBorrowings" xlink:label="loc_us-gaap_InterestExpenseShortTermBorrowings"/><calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_InterestExpense" xlink:to="loc_us-gaap_InterestExpenseShortTermBorrowings" order="20" use="optional" weight="1"/><loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_InterestExpenseFederalHomeLoanBankAndFederalReserveBankAdvancesShortTerm" xlink:label="loc_us-gaap_InterestExpenseFederalHomeLoanBankAndFederalReserveBankAdvancesShortTerm"/><calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_InterestExpense" xlink:to="loc_us-gaap_InterestExpenseFederalHomeLoanBankAndFederalReserveBankAdvancesShortTerm" order="30" use="optional" weight="1"/><loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_InterestExpenseLongTermDebt" xlink:label="loc_us-gaap_InterestExpenseLongTermDebt"/><calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_InterestExpense" xlink:to="loc_us-gaap_InterestExpenseLongTermDebt" order="40" use="optional" weight="1"/><loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_InterestIncomeExpenseNet" xlink:label="loc_us-gaap_InterestIncomeExpenseNet"/><calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_InterestIncomeExpenseNet" xlink:to="loc_us-gaap_InterestAndDividendIncomeOperating" order="10" use="optional" weight="1"/><calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_InterestIncomeExpenseNet" xlink:to="loc_us-gaap_InterestExpense" order="20" use="optional" weight="-1"/><loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_InterestIncomeExpenseAfterProvisionForLoanLoss" xlink:label="loc_us-gaap_InterestIncomeExpenseAfterProvisionForLoanLoss"/><calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_InterestIncomeExpenseAfterProvisionForLoanLoss" xlink:to="loc_us-gaap_InterestIncomeExpenseNet" order="10" use="optional" weight="1"/><loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_ProvisionForLoanLossesExpensed" xlink:label="loc_us-gaap_ProvisionForLoanLossesExpensed"/><calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_InterestIncomeExpenseAfterProvisionForLoanLoss" xlink:to="loc_us-gaap_ProvisionForLoanLossesExpensed" order="20" use="optional" weight="-1"/><loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_NoninterestIncome" xlink:label="loc_us-gaap_NoninterestIncome"/><loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_FeesAndCommissionsDepositorAccounts" xlink:label="loc_us-gaap_FeesAndCommissionsDepositorAccounts"/><calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NoninterestIncome" xlink:to="loc_us-gaap_FeesAndCommissionsDepositorAccounts" order="10" use="optional" weight="1"/><loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_FeesAndCommissionsMortgageBanking" xlink:label="loc_us-gaap_FeesAndCommissionsMortgageBanking"/><calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NoninterestIncome" xlink:to="loc_us-gaap_FeesAndCommissionsMortgageBanking" order="20" use="optional" weight="1"/><loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_BrokerageCommissionsRevenue" xlink:label="loc_us-gaap_BrokerageCommissionsRevenue"/><calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NoninterestIncome" xlink:to="loc_us-gaap_BrokerageCommissionsRevenue" order="30" use="optional" weight="1"/><loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_GainLossOnSaleOfSecuritiesNet" xlink:label="loc_us-gaap_GainLossOnSaleOfSecuritiesNet"/><calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NoninterestIncome" xlink:to="loc_us-gaap_GainLossOnSaleOfSecuritiesNet" order="40" use="optional" weight="1"/><loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_GainsLossesOnExtinguishmentOfDebt" xlink:label="loc_us-gaap_GainsLossesOnExtinguishmentOfDebt"/><calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NoninterestIncome" xlink:to="loc_us-gaap_GainsLossesOnExtinguishmentOfDebt" order="50" use="optional" weight="1"/><loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_NoninterestIncomeOther" xlink:label="loc_us-gaap_NoninterestIncomeOther"/><calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NoninterestIncome" xlink:to="loc_us-gaap_NoninterestIncomeOther" order="60" use="optional" weight="1"/><loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_Revenues" xlink:label="loc_us-gaap_Revenues"/><calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_Revenues" xlink:to="loc_us-gaap_InterestIncomeExpenseAfterProvisionForLoanLoss" order="10" use="optional" weight="1"/><calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_Revenues" xlink:to="loc_us-gaap_NoninterestIncome" order="20" use="optional" weight="1"/><loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_NoninterestExpense" xlink:label="loc_us-gaap_NoninterestExpense"/><loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_LaborAndRelatedExpense" xlink:label="loc_us-gaap_LaborAndRelatedExpense"/><calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NoninterestExpense" xlink:to="loc_us-gaap_LaborAndRelatedExpense" order="10" use="optional" weight="1"/><loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_OccupancyNet" xlink:label="loc_us-gaap_OccupancyNet"/><calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NoninterestExpense" xlink:to="loc_us-gaap_OccupancyNet" order="20" use="optional" weight="1"/><loc xlink:type="locator" xlink:href="ucbi-20141231.xsd#ucbi_CommunicationsAndEquipment" xlink:label="loc_ucbi_CommunicationsAndEquipment"/><calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NoninterestExpense" xlink:to="loc_ucbi_CommunicationsAndEquipment" order="30" use="optional" weight="1"/><loc xlink:type="locator" xlink:href="ucbi-20141231.xsd#ucbi_FdicAssessmentsAndOtherRegulatoryCharges" xlink:label="loc_ucbi_FdicAssessmentsAndOtherRegulatoryCharges"/><calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NoninterestExpense" xlink:to="loc_ucbi_FdicAssessmentsAndOtherRegulatoryCharges" order="40" use="optional" weight="1"/><loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_ProfessionalFees" xlink:label="loc_us-gaap_ProfessionalFees"/><calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NoninterestExpense" xlink:to="loc_us-gaap_ProfessionalFees" order="50" use="optional" weight="1"/><loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_SuppliesAndPostageExpense" xlink:label="loc_us-gaap_SuppliesAndPostageExpense"/><calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NoninterestExpense" xlink:to="loc_us-gaap_SuppliesAndPostageExpense" order="60" use="optional" weight="1"/><loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_MarketingAndAdvertisingExpense" xlink:label="loc_us-gaap_MarketingAndAdvertisingExpense"/><calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NoninterestExpense" xlink:to="loc_us-gaap_MarketingAndAdvertisingExpense" order="70" use="optional" weight="1"/><loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_AmortizationOfIntangibleAssets" xlink:label="loc_us-gaap_AmortizationOfIntangibleAssets"/><calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NoninterestExpense" xlink:to="loc_us-gaap_AmortizationOfIntangibleAssets" order="80" use="optional" weight="1"/><loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_ForeclosedRealEstateExpense" xlink:label="loc_us-gaap_ForeclosedRealEstateExpense"/><calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NoninterestExpense" xlink:to="loc_us-gaap_ForeclosedRealEstateExpense" order="90" use="optional" weight="1"/><loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_OtherNoninterestExpense" xlink:label="loc_us-gaap_OtherNoninterestExpense"/><calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NoninterestExpense" xlink:to="loc_us-gaap_OtherNoninterestExpense" order="100" use="optional" weight="1"/><loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments" xlink:label="loc_us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments"/><calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments" xlink:to="loc_us-gaap_Revenues" order="10" use="optional" weight="1"/><calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments" xlink:to="loc_us-gaap_NoninterestExpense" order="20" use="optional" weight="-1"/><loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_NetIncomeLoss" xlink:label="loc_us-gaap_NetIncomeLoss"/><calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetIncomeLoss" xlink:to="loc_us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments" order="10" use="optional" weight="1"/><loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_IncomeTaxExpenseBenefit" xlink:label="loc_us-gaap_IncomeTaxExpenseBenefit"/><calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetIncomeLoss" xlink:to="loc_us-gaap_IncomeTaxExpenseBenefit" order="20" use="optional" weight="-1"/><loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_NetIncomeLossAvailableToCommonStockholdersBasic" xlink:label="loc_us-gaap_NetIncomeLossAvailableToCommonStockholdersBasic"/><calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetIncomeLossAvailableToCommonStockholdersBasic" xlink:to="loc_us-gaap_NetIncomeLoss" order="10" use="optional" weight="1"/><loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_PreferredStockDividendsAndOtherAdjustments" xlink:label="loc_us-gaap_PreferredStockDividendsAndOtherAdjustments"/><calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetIncomeLossAvailableToCommonStockholdersBasic" xlink:to="loc_us-gaap_PreferredStockDividendsAndOtherAdjustments" order="20" use="optional" weight="-1"/></calculationLink>










<roleRef xlink:type="simple" xlink:href="ucbi-20141231.xsd#ConsolidatedStatementOfComprehensiveIncomeLoss" roleURI="http://ucbi.com/role/ConsolidatedStatementOfComprehensiveIncomeLoss"/>
<calculationLink xlink:type="extended" xlink:role="http://ucbi.com/role/ConsolidatedStatementOfComprehensiveIncomeLoss">
<loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodNetOfTax" xlink:label="loc_us-gaap_OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodNetOfTax"/>
<loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodBeforeTax" xlink:label="loc_us-gaap_OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodBeforeTax"/>
<calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodNetOfTax" xlink:to="loc_us-gaap_OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodBeforeTax" order="10" use="optional" weight="1"/>
<loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodTax" xlink:label="loc_us-gaap_OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodTax"/>
<calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodNetOfTax" xlink:to="loc_us-gaap_OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodTax" order="20" use="optional" weight="-1"/>
<loc xlink:type="locator" xlink:href="ucbi-20141231.xsd#ucbi_OtherComprehensiveIncomeLossReclassificationAdjustmentsUnrealizedHoldingGainLossForAvailableForSaleSecuritiesTransferredToHeldToMaturityNetOfTax" xlink:label="loc_ucbi_OtherComprehensiveIncomeLossReclassificationAdjustmentsUnrealizedHoldingGainLossForAvailableForSaleSecuritiesTransferredToHeldToMaturityNetOfTax"/><loc xlink:type="locator" xlink:href="ucbi-20141231.xsd#ucbi_OtherComprehensiveIncomeLossReclassificationAdjustmentsUnrealizedHoldingGainLossForAvailableForSaleSecuritiesTransferredToHeldToMaturityBeforeTax" xlink:label="loc_ucbi_OtherComprehensiveIncomeLossReclassificationAdjustmentsUnrealizedHoldingGainLossForAvailableForSaleSecuritiesTransferredToHeldToMaturityBeforeTax"/><calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_ucbi_OtherComprehensiveIncomeLossReclassificationAdjustmentsUnrealizedHoldingGainLossForAvailableForSaleSecuritiesTransferredToHeldToMaturityNetOfTax" xlink:to="loc_ucbi_OtherComprehensiveIncomeLossReclassificationAdjustmentsUnrealizedHoldingGainLossForAvailableForSaleSecuritiesTransferredToHeldToMaturityBeforeTax" order="10" use="optional" weight="1"/><loc xlink:type="locator" xlink:href="ucbi-20141231.xsd#ucbi_OtherComprehensiveIncomeLossReclassificationAdjustmentsUnrealizedHoldingGainLossForAvailableForSaleSecuritiesTransferredToHeldToMaturityTax" xlink:label="loc_ucbi_OtherComprehensiveIncomeLossReclassificationAdjustmentsUnrealizedHoldingGainLossForAvailableForSaleSecuritiesTransferredToHeldToMaturityTax"/><calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_ucbi_OtherComprehensiveIncomeLossReclassificationAdjustmentsUnrealizedHoldingGainLossForAvailableForSaleSecuritiesTransferredToHeldToMaturityNetOfTax" xlink:to="loc_ucbi_OtherComprehensiveIncomeLossReclassificationAdjustmentsUnrealizedHoldingGainLossForAvailableForSaleSecuritiesTransferredToHeldToMaturityTax" order="20" use="optional" weight="-1"/><loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIForSaleOfSecuritiesNetOfTax" xlink:label="loc_us-gaap_OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIForSaleOfSecuritiesNetOfTax"/><loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIForSaleOfSecuritiesBeforeTax" xlink:label="loc_us-gaap_OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIForSaleOfSecuritiesBeforeTax"/><calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIForSaleOfSecuritiesNetOfTax" xlink:to="loc_us-gaap_OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIForSaleOfSecuritiesBeforeTax" order="10" use="optional" weight="1"/><loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIForSaleOfSecuritiesTax" xlink:label="loc_us-gaap_OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIForSaleOfSecuritiesTax"/><calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIForSaleOfSecuritiesNetOfTax" xlink:to="loc_us-gaap_OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIForSaleOfSecuritiesTax" order="20" use="optional" weight="-1"/><loc xlink:type="locator" xlink:href="ucbi-20141231.xsd#ucbi_OtherComprehensiveIncomeLossValuationAllowanceInDeferredTaxesOnUnrealizedHoldingGainLossOnAvailableForSaleSecuritiesArisingDuringPeriodNetOfTax" xlink:label="loc_ucbi_OtherComprehensiveIncomeLossValuationAllowanceInDeferredTaxesOnUnrealizedHoldingGainLossOnAvailableForSaleSecuritiesArisingDuringPeriodNetOfTax"/><loc xlink:type="locator" xlink:href="ucbi-20141231.xsd#ucbi_OtherComprehensiveIncomeLossValuationAllowanceInDeferredTaxesOnUnrealizedHoldingGainLossOnAvailableForSaleSecuritiesArisingDuringPeriodBeforeTax" xlink:label="loc_ucbi_OtherComprehensiveIncomeLossValuationAllowanceInDeferredTaxesOnUnrealizedHoldingGainLossOnAvailableForSaleSecuritiesArisingDuringPeriodBeforeTax"/><calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_ucbi_OtherComprehensiveIncomeLossValuationAllowanceInDeferredTaxesOnUnrealizedHoldingGainLossOnAvailableForSaleSecuritiesArisingDuringPeriodNetOfTax" xlink:to="loc_ucbi_OtherComprehensiveIncomeLossValuationAllowanceInDeferredTaxesOnUnrealizedHoldingGainLossOnAvailableForSaleSecuritiesArisingDuringPeriodBeforeTax" order="10" use="optional" weight="1"/><loc xlink:type="locator" xlink:href="ucbi-20141231.xsd#ucbi_OtherComprehensiveIncomeLossValuationAllowanceInDeferredTaxesOnUnrealizedHoldingGainLossOnAvailableForSaleSecuritiesArisingDuringPeriodTaxEffect" xlink:label="loc_ucbi_OtherComprehensiveIncomeLossValuationAllowanceInDeferredTaxesOnUnrealizedHoldingGainLossOnAvailableForSaleSecuritiesArisingDuringPeriodTaxEffect"/><calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_ucbi_OtherComprehensiveIncomeLossValuationAllowanceInDeferredTaxesOnUnrealizedHoldingGainLossOnAvailableForSaleSecuritiesArisingDuringPeriodNetOfTax" xlink:to="loc_ucbi_OtherComprehensiveIncomeLossValuationAllowanceInDeferredTaxesOnUnrealizedHoldingGainLossOnAvailableForSaleSecuritiesArisingDuringPeriodTaxEffect" order="20" use="optional" weight="-1"/><loc xlink:type="locator" xlink:href="ucbi-20141231.xsd#ucbi_OtherComprehensiveIncomeLossUnrealizedHoldingGainLossOnSecuritiesNetOfReclassificationAndValuationAllowanceArisingDuringPeriodNetOfTax" xlink:label="loc_ucbi_OtherComprehensiveIncomeLossUnrealizedHoldingGainLossOnSecuritiesNetOfReclassificationAndValuationAllowanceArisingDuringPeriodNetOfTax"/><loc xlink:type="locator" xlink:href="ucbi-20141231.xsd#ucbi_OtherComprehensiveIncomeLossUnrealizedHoldingGainLossOnSecuritiesNetOfReclassificationAndValuationAllowanceArisingDuringPeriodBeforeTax" xlink:label="loc_ucbi_OtherComprehensiveIncomeLossUnrealizedHoldingGainLossOnSecuritiesNetOfReclassificationAndValuationAllowanceArisingDuringPeriodBeforeTax"/><calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_ucbi_OtherComprehensiveIncomeLossUnrealizedHoldingGainLossOnSecuritiesNetOfReclassificationAndValuationAllowanceArisingDuringPeriodNetOfTax" xlink:to="loc_ucbi_OtherComprehensiveIncomeLossUnrealizedHoldingGainLossOnSecuritiesNetOfReclassificationAndValuationAllowanceArisingDuringPeriodBeforeTax" order="10" use="optional" weight="1"/><loc xlink:type="locator" xlink:href="ucbi-20141231.xsd#ucbi_OtherComprehensiveIncomeLossUnrealizedHoldingGainLossOnSecuritiesNetOfReclassificationAndValuationAllowanceArisingDuringPeriodTaxEffect" xlink:label="loc_ucbi_OtherComprehensiveIncomeLossUnrealizedHoldingGainLossOnSecuritiesNetOfReclassificationAndValuationAllowanceArisingDuringPeriodTaxEffect"/><calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_ucbi_OtherComprehensiveIncomeLossUnrealizedHoldingGainLossOnSecuritiesNetOfReclassificationAndValuationAllowanceArisingDuringPeriodNetOfTax" xlink:to="loc_ucbi_OtherComprehensiveIncomeLossUnrealizedHoldingGainLossOnSecuritiesNetOfReclassificationAndValuationAllowanceArisingDuringPeriodTaxEffect" order="20" use="optional" weight="-1"/><loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_OtherComprehensiveIncomeLossTransfersFromHeldToMaturityToAvailableForSaleSecuritiesNetOfTax" xlink:label="loc_us-gaap_OtherComprehensiveIncomeLossTransfersFromHeldToMaturityToAvailableForSaleSecuritiesNetOfTax"/><loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_OtherComprehensiveIncomeReclassificationAdjustmentForHeldToMaturityTransferredToAvailableForSaleSecuritiesBeforeTax" xlink:label="loc_us-gaap_OtherComprehensiveIncomeReclassificationAdjustmentForHeldToMaturityTransferredToAvailableForSaleSecuritiesBeforeTax"/><calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_OtherComprehensiveIncomeLossTransfersFromHeldToMaturityToAvailableForSaleSecuritiesNetOfTax" xlink:to="loc_us-gaap_OtherComprehensiveIncomeReclassificationAdjustmentForHeldToMaturityTransferredToAvailableForSaleSecuritiesBeforeTax" order="10" use="optional" weight="1"/><loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_OtherComprehensiveIncomeReclassificationAdjustmentForHeldToMaturityTransferredToAvailableForSaleSecuritiesTax" xlink:label="loc_us-gaap_OtherComprehensiveIncomeReclassificationAdjustmentForHeldToMaturityTransferredToAvailableForSaleSecuritiesTax"/><calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_OtherComprehensiveIncomeLossTransfersFromHeldToMaturityToAvailableForSaleSecuritiesNetOfTax" xlink:to="loc_us-gaap_OtherComprehensiveIncomeReclassificationAdjustmentForHeldToMaturityTransferredToAvailableForSaleSecuritiesTax" order="20" use="optional" weight="-1"/><loc xlink:type="locator" xlink:href="ucbi-20141231.xsd#ucbi_OtherComprehensiveIncomeLossReclassificationAdjustmentsForAvailableForSaleSecuritiesTransferredToHeldToMaturityNetOfTax" xlink:label="loc_ucbi_OtherComprehensiveIncomeLossReclassificationAdjustmentsForAvailableForSaleSecuritiesTransferredToHeldToMaturityNetOfTax"/><loc xlink:type="locator" xlink:href="ucbi-20141231.xsd#ucbi_OtherComprehensiveIncomeLossReclassificationAdjustmentsForAvailableForSaleSecuritiesTransferredToHeldToMaturityBeforeTax" xlink:label="loc_ucbi_OtherComprehensiveIncomeLossReclassificationAdjustmentsForAvailableForSaleSecuritiesTransferredToHeldToMaturityBeforeTax"/><calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_ucbi_OtherComprehensiveIncomeLossReclassificationAdjustmentsForAvailableForSaleSecuritiesTransferredToHeldToMaturityNetOfTax" xlink:to="loc_ucbi_OtherComprehensiveIncomeLossReclassificationAdjustmentsForAvailableForSaleSecuritiesTransferredToHeldToMaturityBeforeTax" order="10" use="optional" weight="1"/><loc xlink:type="locator" xlink:href="ucbi-20141231.xsd#ucbi_OtherComprehensiveIncomeLossReclassificationAdjustmentsForAvailableForSaleSecuritiesTransferredToHeldToMaturityTax" xlink:label="loc_ucbi_OtherComprehensiveIncomeLossReclassificationAdjustmentsForAvailableForSaleSecuritiesTransferredToHeldToMaturityTax"/><calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_ucbi_OtherComprehensiveIncomeLossReclassificationAdjustmentsForAvailableForSaleSecuritiesTransferredToHeldToMaturityNetOfTax" xlink:to="loc_ucbi_OtherComprehensiveIncomeLossReclassificationAdjustmentsForAvailableForSaleSecuritiesTransferredToHeldToMaturityTax" order="20" use="optional" weight="1"/><loc xlink:type="locator" xlink:href="ucbi-20141231.xsd#ucbi_OtherComprehensiveIncomeLossValuationAllowanceInDeferredTaxesArisingFromAmortizationOfGainsIncludedInNetIncomeLossOnAvailableForSaleSecuritiesTransferredToHeldToMaturityArisingDuringPeriodNetOfTax" xlink:label="loc_ucbi_OtherComprehensiveIncomeLossValuationAllowanceInDeferredTaxesArisingFromAmortizationOfGainsIncludedInNetIncomeLossOnAvailableForSaleSecuritiesTransferredToHeldToMaturityArisingDuringPeriodNetOfTax"/><loc xlink:type="locator" xlink:href="ucbi-20141231.xsd#ucbi_OtherComprehensiveIncomeLossValuationAllowanceInDeferredTaxesArisingFromAmortizationOfGainsIncludedInNetIncomeLossOnAvailableForSaleSecuritiesTransferredToHeldToMaturityArisingDuringPeriodBeforeTax" xlink:label="loc_ucbi_OtherComprehensiveIncomeLossValuationAllowanceInDeferredTaxesArisingFromAmortizationOfGainsIncludedInNetIncomeLossOnAvailableForSaleSecuritiesTransferredToHeldToMaturityArisingDuringPeriodBeforeTax"/><calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_ucbi_OtherComprehensiveIncomeLossValuationAllowanceInDeferredTaxesArisingFromAmortizationOfGainsIncludedInNetIncomeLossOnAvailableForSaleSecuritiesTransferredToHeldToMaturityArisingDuringPeriodNetOfTax" xlink:to="loc_ucbi_OtherComprehensiveIncomeLossValuationAllowanceInDeferredTaxesArisingFromAmortizationOfGainsIncludedInNetIncomeLossOnAvailableForSaleSecuritiesTransferredToHeldToMaturityArisingDuringPeriodBeforeTax" order="10" use="optional" weight="1"/><loc xlink:type="locator" xlink:href="ucbi-20141231.xsd#ucbi_OtherComprehensiveIncomeLossValuationAllowanceInDeferredTaxesArisingFromAmortizationOfGainsIncludedInNetIncomeLossOnAvailableForSaleSecuritiesTransferredToHeldToMaturityArisingDuringPeriodTaxEffect" xlink:label="loc_ucbi_OtherComprehensiveIncomeLossValuationAllowanceInDeferredTaxesArisingFromAmortizationOfGainsIncludedInNetIncomeLossOnAvailableForSaleSecuritiesTransferredToHeldToMaturityArisingDuringPeriodTaxEffect"/><calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_ucbi_OtherComprehensiveIncomeLossValuationAllowanceInDeferredTaxesArisingFromAmortizationOfGainsIncludedInNetIncomeLossOnAvailableForSaleSecuritiesTransferredToHeldToMaturityArisingDuringPeriodNetOfTax" xlink:to="loc_ucbi_OtherComprehensiveIncomeLossValuationAllowanceInDeferredTaxesArisingFromAmortizationOfGainsIncludedInNetIncomeLossOnAvailableForSaleSecuritiesTransferredToHeldToMaturityArisingDuringPeriodTaxEffect" order="20" use="optional" weight="-1"/><loc xlink:type="locator" xlink:href="ucbi-20141231.xsd#ucbi_OtherComprehensiveIncomeLossAmortizationOfGainsAndValuationAllowanceInDeferredTaxesFromAmortizationOfGainsIncludedInNetIncomeLossOnAvailableForSaleSecuritiesTransferredToHeldToMaturityNetOfTax" xlink:label="loc_ucbi_OtherComprehensiveIncomeLossAmortizationOfGainsAndValuationAllowanceInDeferredTaxesFromAmortizationOfGainsIncludedInNetIncomeLossOnAvailableForSaleSecuritiesTransferredToHeldToMaturityNetOfTax"/><loc xlink:type="locator" xlink:href="ucbi-20141231.xsd#ucbi_OtherComprehensiveIncomeLossAmortizationOfGainsAndValuationAllowanceInDeferredTaxesFromAmortizationOfGainsIncludedInNetIncomeLossOnAvailableForSaleSecuritiesTransferredToHeldToMaturityBeforeTax" xlink:label="loc_ucbi_OtherComprehensiveIncomeLossAmortizationOfGainsAndValuationAllowanceInDeferredTaxesFromAmortizationOfGainsIncludedInNetIncomeLossOnAvailableForSaleSecuritiesTransferredToHeldToMaturityBeforeTax"/><calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_ucbi_OtherComprehensiveIncomeLossAmortizationOfGainsAndValuationAllowanceInDeferredTaxesFromAmortizationOfGainsIncludedInNetIncomeLossOnAvailableForSaleSecuritiesTransferredToHeldToMaturityNetOfTax" xlink:to="loc_ucbi_OtherComprehensiveIncomeLossAmortizationOfGainsAndValuationAllowanceInDeferredTaxesFromAmortizationOfGainsIncludedInNetIncomeLossOnAvailableForSaleSecuritiesTransferredToHeldToMaturityBeforeTax" order="10" use="optional" weight="1"/><loc xlink:type="locator" xlink:href="ucbi-20141231.xsd#ucbi_OtherComprehensiveIncomeLossAmortizationOfGainsAndValuationAllowanceInDeferredTaxesFromAmortizationOfGainsIncludedInNetIncomeLossOnAvailableForSaleSecuritiesTransferredToHeldToMaturityTaxEffect" xlink:label="loc_ucbi_OtherComprehensiveIncomeLossAmortizationOfGainsAndValuationAllowanceInDeferredTaxesFromAmortizationOfGainsIncludedInNetIncomeLossOnAvailableForSaleSecuritiesTransferredToHeldToMaturityTaxEffect"/><calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_ucbi_OtherComprehensiveIncomeLossAmortizationOfGainsAndValuationAllowanceInDeferredTaxesFromAmortizationOfGainsIncludedInNetIncomeLossOnAvailableForSaleSecuritiesTransferredToHeldToMaturityNetOfTax" xlink:to="loc_ucbi_OtherComprehensiveIncomeLossAmortizationOfGainsAndValuationAllowanceInDeferredTaxesFromAmortizationOfGainsIncludedInNetIncomeLossOnAvailableForSaleSecuritiesTransferredToHeldToMaturityTaxEffect" order="20" use="optional" weight="-1"/><loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIOnDerivativesNetOfTax" xlink:label="loc_us-gaap_OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIOnDerivativesNetOfTax"/><loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIOnDerivativesBeforeTax" xlink:label="loc_us-gaap_OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIOnDerivativesBeforeTax"/><calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIOnDerivativesNetOfTax" xlink:to="loc_us-gaap_OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIOnDerivativesBeforeTax" order="10" use="optional" weight="1"/><loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIOnDerivativesTax" xlink:label="loc_us-gaap_OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIOnDerivativesTax"/><calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIOnDerivativesNetOfTax" xlink:to="loc_us-gaap_OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIOnDerivativesTax" order="20" use="optional" weight="-1"/><loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_OtherComprehensiveIncomeUnrealizedGainLossOnDerivativesArisingDuringPeriodNetOfTax" xlink:label="loc_us-gaap_OtherComprehensiveIncomeUnrealizedGainLossOnDerivativesArisingDuringPeriodNetOfTax"/><loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_OtherComprehensiveIncomeUnrealizedGainLossOnDerivativesArisingDuringPeriodBeforeTax" xlink:label="loc_us-gaap_OtherComprehensiveIncomeUnrealizedGainLossOnDerivativesArisingDuringPeriodBeforeTax"/><calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_OtherComprehensiveIncomeUnrealizedGainLossOnDerivativesArisingDuringPeriodNetOfTax" xlink:to="loc_us-gaap_OtherComprehensiveIncomeUnrealizedGainLossOnDerivativesArisingDuringPeriodBeforeTax" order="10" use="optional" weight="1"/><loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_OtherComprehensiveIncomeUnrealizedGainLossOnDerivativesArisingDuringPeriodTax" xlink:label="loc_us-gaap_OtherComprehensiveIncomeUnrealizedGainLossOnDerivativesArisingDuringPeriodTax"/><calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_OtherComprehensiveIncomeUnrealizedGainLossOnDerivativesArisingDuringPeriodNetOfTax" xlink:to="loc_us-gaap_OtherComprehensiveIncomeUnrealizedGainLossOnDerivativesArisingDuringPeriodTax" order="20" use="optional" weight="-1"/><loc xlink:type="locator" xlink:href="ucbi-20141231.xsd#ucbi_OtherComprehensiveIncomeLossValuationAllowanceInDeferredTaxesOnUnrealizedGainsAndLossesAndAmortizationOfGainsIncludedInNetIncomeLossOnCashFlowHedgesArisingDuringPeriodNetOfTax" xlink:label="loc_ucbi_OtherComprehensiveIncomeLossValuationAllowanceInDeferredTaxesOnUnrealizedGainsAndLossesAndAmortizationOfGainsIncludedInNetIncomeLossOnCashFlowHedgesArisingDuringPeriodNetOfTax"/><loc xlink:type="locator" xlink:href="ucbi-20141231.xsd#ucbi_OtherComprehensiveIncomeLossValuationAllowanceInDeferredTaxesOnUnrealizedGainsAndLossesAndAmortizationOfGainsIncludedInNetIncomeLossOnCashFlowHedgesArisingDuringPeriodBeforeTax" xlink:label="loc_ucbi_OtherComprehensiveIncomeLossValuationAllowanceInDeferredTaxesOnUnrealizedGainsAndLossesAndAmortizationOfGainsIncludedInNetIncomeLossOnCashFlowHedgesArisingDuringPeriodBeforeTax"/><calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_ucbi_OtherComprehensiveIncomeLossValuationAllowanceInDeferredTaxesOnUnrealizedGainsAndLossesAndAmortizationOfGainsIncludedInNetIncomeLossOnCashFlowHedgesArisingDuringPeriodNetOfTax" xlink:to="loc_ucbi_OtherComprehensiveIncomeLossValuationAllowanceInDeferredTaxesOnUnrealizedGainsAndLossesAndAmortizationOfGainsIncludedInNetIncomeLossOnCashFlowHedgesArisingDuringPeriodBeforeTax" order="10" use="optional" weight="1"/><loc xlink:type="locator" xlink:href="ucbi-20141231.xsd#ucbi_OtherComprehensiveIncomeLossValuationAllowanceInDeferredTaxesOnUnrealizedGainsAndLossesAndAmortizationOfGainsIncludedInNetIncomeLossOnCashFlowHedgesArisingDuringPeriodTaxEffect" xlink:label="loc_ucbi_OtherComprehensiveIncomeLossValuationAllowanceInDeferredTaxesOnUnrealizedGainsAndLossesAndAmortizationOfGainsIncludedInNetIncomeLossOnCashFlowHedgesArisingDuringPeriodTaxEffect"/><calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_ucbi_OtherComprehensiveIncomeLossValuationAllowanceInDeferredTaxesOnUnrealizedGainsAndLossesAndAmortizationOfGainsIncludedInNetIncomeLossOnCashFlowHedgesArisingDuringPeriodNetOfTax" xlink:to="loc_ucbi_OtherComprehensiveIncomeLossValuationAllowanceInDeferredTaxesOnUnrealizedGainsAndLossesAndAmortizationOfGainsIncludedInNetIncomeLossOnCashFlowHedgesArisingDuringPeriodTaxEffect" order="20" use="optional" weight="-1"/><loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_OtherComprehensiveIncomeDerivativesQualifyingAsHedgesNetOfTaxPortionAttributableToParent" xlink:label="loc_us-gaap_OtherComprehensiveIncomeDerivativesQualifyingAsHedgesNetOfTaxPortionAttributableToParent"/><loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_OtherComprehensiveIncomeDerivativesQualifyingAsHedgesBeforeTaxPortionAttributableToParent" xlink:label="loc_us-gaap_OtherComprehensiveIncomeDerivativesQualifyingAsHedgesBeforeTaxPortionAttributableToParent"/><calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_OtherComprehensiveIncomeDerivativesQualifyingAsHedgesNetOfTaxPortionAttributableToParent" xlink:to="loc_us-gaap_OtherComprehensiveIncomeDerivativesQualifyingAsHedgesBeforeTaxPortionAttributableToParent" order="10" use="optional" weight="1"/><loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_OtherComprehensiveIncomeLossDerivativesQualifyingAsHedgesTax" xlink:label="loc_us-gaap_OtherComprehensiveIncomeLossDerivativesQualifyingAsHedgesTax"/><calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_OtherComprehensiveIncomeDerivativesQualifyingAsHedgesNetOfTaxPortionAttributableToParent" xlink:to="loc_us-gaap_OtherComprehensiveIncomeLossDerivativesQualifyingAsHedgesTax" order="20" use="optional" weight="-1"/><loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_OtherComprehensiveIncomeDefinedBenefitPlansNetUnamortizedGainLossArisingDuringPeriodNetOfTax" xlink:label="loc_us-gaap_OtherComprehensiveIncomeDefinedBenefitPlansNetUnamortizedGainLossArisingDuringPeriodNetOfTax"/><loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansNetUnamortizedGainLossArisingDuringPeriodBeforeTax" xlink:label="loc_us-gaap_OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansNetUnamortizedGainLossArisingDuringPeriodBeforeTax"/><calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_OtherComprehensiveIncomeDefinedBenefitPlansNetUnamortizedGainLossArisingDuringPeriodNetOfTax" xlink:to="loc_us-gaap_OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansNetUnamortizedGainLossArisingDuringPeriodBeforeTax" order="10" use="optional" weight="1"/><loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_OtherComprehensiveIncomeDefinedBenefitPlansNetUnamortizedGainLossArisingDuringPeriodTax" xlink:label="loc_us-gaap_OtherComprehensiveIncomeDefinedBenefitPlansNetUnamortizedGainLossArisingDuringPeriodTax"/><calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_OtherComprehensiveIncomeDefinedBenefitPlansNetUnamortizedGainLossArisingDuringPeriodNetOfTax" xlink:to="loc_us-gaap_OtherComprehensiveIncomeDefinedBenefitPlansNetUnamortizedGainLossArisingDuringPeriodTax" order="20" use="optional" weight="-1"/><loc xlink:type="locator" xlink:href="ucbi-20141231.xsd#ucbi_OtherComprehensiveIncomeLossAmortizationOfPriorServiceCostAndActuarialLossesIncludeNetPeriodicPensionCostForDefinedBenefitPensionPlanNetOfTax" xlink:label="loc_ucbi_OtherComprehensiveIncomeLossAmortizationOfPriorServiceCostAndActuarialLossesIncludeNetPeriodicPensionCostForDefinedBenefitPensionPlanNetOfTax"/><loc xlink:type="locator" xlink:href="ucbi-20141231.xsd#ucbi_OtherComprehensiveIncomeLossAmortizationOfPriorServiceCostAndActuarialLossesIncludedInNetPeriodicPensionCostForDefinedBenefitPensionPlanBeforeTaxAmount" xlink:label="loc_ucbi_OtherComprehensiveIncomeLossAmortizationOfPriorServiceCostAndActuarialLossesIncludedInNetPeriodicPensionCostForDefinedBenefitPensionPlanBeforeTaxAmount"/><calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_ucbi_OtherComprehensiveIncomeLossAmortizationOfPriorServiceCostAndActuarialLossesIncludeNetPeriodicPensionCostForDefinedBenefitPensionPlanNetOfTax" xlink:to="loc_ucbi_OtherComprehensiveIncomeLossAmortizationOfPriorServiceCostAndActuarialLossesIncludedInNetPeriodicPensionCostForDefinedBenefitPensionPlanBeforeTaxAmount" order="10" use="optional" weight="1"/><loc xlink:type="locator" xlink:href="ucbi-20141231.xsd#ucbi_OtherComprehensiveIncomeLossAmortizationOfPriorServiceCostAndActuarialLossesIncludedInNetPeriodicPensionCostForDefinedBenefitPensionPlanTaxExpenseBenefit" xlink:label="loc_ucbi_OtherComprehensiveIncomeLossAmortizationOfPriorServiceCostAndActuarialLossesIncludedInNetPeriodicPensionCostForDefinedBenefitPensionPlanTaxExpenseBenefit"/><calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_ucbi_OtherComprehensiveIncomeLossAmortizationOfPriorServiceCostAndActuarialLossesIncludeNetPeriodicPensionCostForDefinedBenefitPensionPlanNetOfTax" xlink:to="loc_ucbi_OtherComprehensiveIncomeLossAmortizationOfPriorServiceCostAndActuarialLossesIncludedInNetPeriodicPensionCostForDefinedBenefitPensionPlanTaxExpenseBenefit" order="20" use="optional" weight="1"/><loc xlink:type="locator" xlink:href="ucbi-20141231.xsd#ucbi_OtherComprehensiveIncomeLossValuationAllowanceInDeferredTaxesOnReclassificationOfUnamortizedPriorServiceCostAndActuarialLossesAndAmortizationOfPriorServiceCostAndActuarialLossesNetOfTax" xlink:label="loc_ucbi_OtherComprehensiveIncomeLossValuationAllowanceInDeferredTaxesOnReclassificationOfUnamortizedPriorServiceCostAndActuarialLossesAndAmortizationOfPriorServiceCostAndActuarialLossesNetOfTax"/><loc xlink:type="locator" xlink:href="ucbi-20141231.xsd#ucbi_OtherComprehensiveIncomeLossValuationAllowanceInDeferredTaxesOnReclassificationOfUnamortizedPriorServiceCostAndActuarialLossesAndAmortizationOfPriorServiceCostAndActuarialLossesTaxEffect" xlink:label="loc_ucbi_OtherComprehensiveIncomeLossValuationAllowanceInDeferredTaxesOnReclassificationOfUnamortizedPriorServiceCostAndActuarialLossesAndAmortizationOfPriorServiceCostAndActuarialLossesTaxEffect"/><calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_ucbi_OtherComprehensiveIncomeLossValuationAllowanceInDeferredTaxesOnReclassificationOfUnamortizedPriorServiceCostAndActuarialLossesAndAmortizationOfPriorServiceCostAndActuarialLossesNetOfTax" xlink:to="loc_ucbi_OtherComprehensiveIncomeLossValuationAllowanceInDeferredTaxesOnReclassificationOfUnamortizedPriorServiceCostAndActuarialLossesAndAmortizationOfPriorServiceCostAndActuarialLossesTaxEffect" order="10" use="optional" weight="-1"/><loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_OtherComprehensiveIncomeDefinedBenefitPlansAdjustmentNetOfTaxPortionAttributableToParent" xlink:label="loc_us-gaap_OtherComprehensiveIncomeDefinedBenefitPlansAdjustmentNetOfTaxPortionAttributableToParent"/><loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_OtherComprehensiveIncomeDefinedBenefitPlansAdjustmentBeforeTaxPortionAttributableToParent" xlink:label="loc_us-gaap_OtherComprehensiveIncomeDefinedBenefitPlansAdjustmentBeforeTaxPortionAttributableToParent"/><calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_OtherComprehensiveIncomeDefinedBenefitPlansAdjustmentNetOfTaxPortionAttributableToParent" xlink:to="loc_us-gaap_OtherComprehensiveIncomeDefinedBenefitPlansAdjustmentBeforeTaxPortionAttributableToParent" order="10" use="optional" weight="1"/><loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansTax" xlink:label="loc_us-gaap_OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansTax"/><calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_OtherComprehensiveIncomeDefinedBenefitPlansAdjustmentNetOfTaxPortionAttributableToParent" xlink:to="loc_us-gaap_OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansTax" order="20" use="optional" weight="-1"/><loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent" xlink:label="loc_us-gaap_OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent"/><loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_OtherComprehensiveIncomeLossBeforeTaxPortionAttributableToParent" xlink:label="loc_us-gaap_OtherComprehensiveIncomeLossBeforeTaxPortionAttributableToParent"/><calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent" xlink:to="loc_us-gaap_OtherComprehensiveIncomeLossBeforeTaxPortionAttributableToParent" order="10" use="optional" weight="1"/><loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_OtherComprehensiveIncomeLossTaxPortionAttributableToParent1" xlink:label="loc_us-gaap_OtherComprehensiveIncomeLossTaxPortionAttributableToParent1"/><calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent" xlink:to="loc_us-gaap_OtherComprehensiveIncomeLossTaxPortionAttributableToParent1" order="20" use="optional" weight="-1"/><loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_ComprehensiveIncomeNetOfTax" xlink:label="loc_us-gaap_ComprehensiveIncomeNetOfTax"/><loc xlink:type="locator" xlink:href="ucbi-20141231.xsd#ucbi_ComprehensiveIncomeLossBeforeTax" xlink:label="loc_ucbi_ComprehensiveIncomeLossBeforeTax"/><calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_ComprehensiveIncomeNetOfTax" xlink:to="loc_ucbi_ComprehensiveIncomeLossBeforeTax" order="10" use="optional" weight="1"/><loc xlink:type="locator" xlink:href="ucbi-20141231.xsd#ucbi_ComprehensiveIncomeLossTax" xlink:label="loc_ucbi_ComprehensiveIncomeLossTax"/><calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_ComprehensiveIncomeNetOfTax" xlink:to="loc_ucbi_ComprehensiveIncomeLossTax" order="20" use="optional" weight="-1"/></calculationLink>


















<roleRef xlink:type="simple" xlink:href="ucbi-20141231.xsd#ConsolidatedBalanceSheet" roleURI="http://ucbi.com/role/ConsolidatedBalanceSheet"/>
<calculationLink xlink:type="extended" xlink:role="http://ucbi.com/role/ConsolidatedBalanceSheet">
<loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_CashCashEquivalentsAndFederalFundsSold" xlink:label="loc_us-gaap_CashCashEquivalentsAndFederalFundsSold"/>
<loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_CashAndDueFromBanks" xlink:label="loc_us-gaap_CashAndDueFromBanks"/>
<calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_CashCashEquivalentsAndFederalFundsSold" xlink:to="loc_us-gaap_CashAndDueFromBanks" order="10" use="optional" weight="1"/>
<loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_InterestBearingDepositsInBanks" xlink:label="loc_us-gaap_InterestBearingDepositsInBanks"/>
<calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_CashCashEquivalentsAndFederalFundsSold" xlink:to="loc_us-gaap_InterestBearingDepositsInBanks" order="20" use="optional" weight="1"/>
<loc xlink:type="locator" xlink:href="ucbi-20141231.xsd#ucbi_FederalFundsSoldCommercialPaperAndShortTermInvestments" xlink:label="loc_ucbi_FederalFundsSoldCommercialPaperAndShortTermInvestments"/>
<calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_CashCashEquivalentsAndFederalFundsSold" xlink:to="loc_ucbi_FederalFundsSoldCommercialPaperAndShortTermInvestments" order="30" use="optional" weight="1"/>
<loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_LoansAndLeasesReceivableNetReportedAmount" xlink:label="loc_us-gaap_LoansAndLeasesReceivableNetReportedAmount"/><loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_LoansAndLeasesReceivableNetOfDeferredIncome" xlink:label="loc_us-gaap_LoansAndLeasesReceivableNetOfDeferredIncome"/><calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_LoansAndLeasesReceivableNetReportedAmount" xlink:to="loc_us-gaap_LoansAndLeasesReceivableNetOfDeferredIncome" order="10" use="optional" weight="1"/><loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_LoansAndLeasesReceivableAllowance" xlink:label="loc_us-gaap_LoansAndLeasesReceivableAllowance"/><calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_LoansAndLeasesReceivableNetReportedAmount" xlink:to="loc_us-gaap_LoansAndLeasesReceivableAllowance" order="20" use="optional" weight="-1"/><loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_Assets" xlink:label="loc_us-gaap_Assets"/><calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_Assets" xlink:to="loc_us-gaap_CashCashEquivalentsAndFederalFundsSold" order="10" use="optional" weight="1"/><loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_AvailableForSaleSecurities" xlink:label="loc_us-gaap_AvailableForSaleSecurities"/><calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_Assets" xlink:to="loc_us-gaap_AvailableForSaleSecurities" order="20" use="optional" weight="1"/><loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_HeldToMaturitySecurities" xlink:label="loc_us-gaap_HeldToMaturitySecurities"/><calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_Assets" xlink:to="loc_us-gaap_HeldToMaturitySecurities" order="30" use="optional" weight="1"/><loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_LoansHeldForSaleMortgages" xlink:label="loc_us-gaap_LoansHeldForSaleMortgages"/><calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_Assets" xlink:to="loc_us-gaap_LoansHeldForSaleMortgages" order="40" use="optional" weight="1"/><calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_Assets" xlink:to="loc_us-gaap_LoansAndLeasesReceivableNetReportedAmount" order="50" use="optional" weight="1"/><loc xlink:type="locator" xlink:href="ucbi-20141231.xsd#ucbi_AssetsCoveredByLossSharingAgreementsWithFdic" xlink:label="loc_ucbi_AssetsCoveredByLossSharingAgreementsWithFdic"/><calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_Assets" xlink:to="loc_ucbi_AssetsCoveredByLossSharingAgreementsWithFdic" order="60" use="optional" weight="1"/><loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_PropertyPlantAndEquipmentNet" xlink:label="loc_us-gaap_PropertyPlantAndEquipmentNet"/><calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_Assets" xlink:to="loc_us-gaap_PropertyPlantAndEquipmentNet" order="70" use="optional" weight="1"/><loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_BankOwnedLifeInsurance" xlink:label="loc_us-gaap_BankOwnedLifeInsurance"/><calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_Assets" xlink:to="loc_us-gaap_BankOwnedLifeInsurance" order="80" use="optional" weight="1"/><loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_InterestReceivable" xlink:label="loc_us-gaap_InterestReceivable"/><calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_Assets" xlink:to="loc_us-gaap_InterestReceivable" order="90" use="optional" weight="1"/><loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_DeferredTaxAssetsLiabilitiesNet" xlink:label="loc_us-gaap_DeferredTaxAssetsLiabilitiesNet"/><calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_Assets" xlink:to="loc_us-gaap_DeferredTaxAssetsLiabilitiesNet" order="100" use="optional" weight="1"/><loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_DerivativeAssets" xlink:label="loc_us-gaap_DerivativeAssets"/><calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_Assets" xlink:to="loc_us-gaap_DerivativeAssets" order="110" use="optional" weight="1"/><loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_OtherAssets" xlink:label="loc_us-gaap_OtherAssets"/><calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_Assets" xlink:to="loc_us-gaap_OtherAssets" order="120" use="optional" weight="1"/><loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_Deposits" xlink:label="loc_us-gaap_Deposits"/><loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_DemandDepositAccounts" xlink:label="loc_us-gaap_DemandDepositAccounts"/><calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_Deposits" xlink:to="loc_us-gaap_DemandDepositAccounts" order="10" use="optional" weight="1"/><loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_DepositsNegotiableOrderOfWithdrawalNOW" xlink:label="loc_us-gaap_DepositsNegotiableOrderOfWithdrawalNOW"/><calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_Deposits" xlink:to="loc_us-gaap_DepositsNegotiableOrderOfWithdrawalNOW" order="20" use="optional" weight="1"/><loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_DepositsMoneyMarketDeposits" xlink:label="loc_us-gaap_DepositsMoneyMarketDeposits"/><calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_Deposits" xlink:to="loc_us-gaap_DepositsMoneyMarketDeposits" order="30" use="optional" weight="1"/><loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_DepositsSavingsDeposits" xlink:label="loc_us-gaap_DepositsSavingsDeposits"/><calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_Deposits" xlink:to="loc_us-gaap_DepositsSavingsDeposits" order="40" use="optional" weight="1"/><loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_TimeDepositsLessThan100000" xlink:label="loc_us-gaap_TimeDepositsLessThan100000"/><calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_Deposits" xlink:to="loc_us-gaap_TimeDepositsLessThan100000" order="50" use="optional" weight="1"/><loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_TimeDeposits100000OrMore" xlink:label="loc_us-gaap_TimeDeposits100000OrMore"/><calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_Deposits" xlink:to="loc_us-gaap_TimeDeposits100000OrMore" order="60" use="optional" weight="1"/><loc xlink:type="locator" xlink:href="ucbi-20141231.xsd#ucbi_Brokered" xlink:label="loc_ucbi_Brokered"/><calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_Deposits" xlink:to="loc_ucbi_Brokered" order="70" use="optional" weight="1"/><loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_Liabilities" xlink:label="loc_us-gaap_Liabilities"/><calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_Liabilities" xlink:to="loc_us-gaap_Deposits" order="10" use="optional" weight="1"/><loc xlink:type="locator" xlink:href="ucbi-20141231.xsd#ucbi_FederalFundsPurchasedRepurchaseAgreementsAndOtherShortTermBorrowingsTime" xlink:label="loc_ucbi_FederalFundsPurchasedRepurchaseAgreementsAndOtherShortTermBorrowingsTime"/><calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_Liabilities" xlink:to="loc_ucbi_FederalFundsPurchasedRepurchaseAgreementsAndOtherShortTermBorrowingsTime" order="20" use="optional" weight="1"/><loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_AdvancesFromFederalHomeLoanBanks" xlink:label="loc_us-gaap_AdvancesFromFederalHomeLoanBanks"/><calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_Liabilities" xlink:to="loc_us-gaap_AdvancesFromFederalHomeLoanBanks" order="30" use="optional" weight="1"/><loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_LongTermDebt" xlink:label="loc_us-gaap_LongTermDebt"/><calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_Liabilities" xlink:to="loc_us-gaap_LongTermDebt" order="40" use="optional" weight="1"/><loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_DerivativeLiabilities" xlink:label="loc_us-gaap_DerivativeLiabilities"/><calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_Liabilities" xlink:to="loc_us-gaap_DerivativeLiabilities" order="50" use="optional" weight="1"/><loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_PayablesToBrokerDealersAndClearingOrganizations" xlink:label="loc_us-gaap_PayablesToBrokerDealersAndClearingOrganizations"/><calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_Liabilities" xlink:to="loc_us-gaap_PayablesToBrokerDealersAndClearingOrganizations" order="60" use="optional" weight="1"/><loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_AccruedLiabilitiesAndOtherLiabilities" xlink:label="loc_us-gaap_AccruedLiabilitiesAndOtherLiabilities"/><calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_Liabilities" xlink:to="loc_us-gaap_AccruedLiabilitiesAndOtherLiabilities" order="70" use="optional" weight="1"/><loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_StockholdersEquity" xlink:label="loc_us-gaap_StockholdersEquity"/><loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_PreferredStockValue" xlink:label="loc_us-gaap_PreferredStockValue"/><calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_StockholdersEquity" xlink:to="loc_us-gaap_PreferredStockValue" order="10" use="optional" weight="1"/><loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_CommonStockValue" xlink:label="loc_us-gaap_CommonStockValue"/><calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_StockholdersEquity" xlink:to="loc_us-gaap_CommonStockValue" order="20" use="optional" weight="1"/><loc xlink:type="locator" xlink:href="ucbi-20141231.xsd#ucbi_CommonStocksIssuable" xlink:label="loc_ucbi_CommonStocksIssuable"/><calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_StockholdersEquity" xlink:to="loc_ucbi_CommonStocksIssuable" order="30" use="optional" weight="1"/><loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_AdditionalPaidInCapital" xlink:label="loc_us-gaap_AdditionalPaidInCapital"/><calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_StockholdersEquity" xlink:to="loc_us-gaap_AdditionalPaidInCapital" order="40" use="optional" weight="1"/><loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_RetainedEarningsAccumulatedDeficit" xlink:label="loc_us-gaap_RetainedEarningsAccumulatedDeficit"/><calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_StockholdersEquity" xlink:to="loc_us-gaap_RetainedEarningsAccumulatedDeficit" order="50" use="optional" weight="1"/><loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_AccumulatedOtherComprehensiveIncomeLossNetOfTax" xlink:label="loc_us-gaap_AccumulatedOtherComprehensiveIncomeLossNetOfTax"/><calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_StockholdersEquity" xlink:to="loc_us-gaap_AccumulatedOtherComprehensiveIncomeLossNetOfTax" order="60" use="optional" weight="1"/><loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_LiabilitiesAndStockholdersEquity" xlink:label="loc_us-gaap_LiabilitiesAndStockholdersEquity"/><calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_LiabilitiesAndStockholdersEquity" xlink:to="loc_us-gaap_Liabilities" order="10" use="optional" weight="1"/><calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_LiabilitiesAndStockholdersEquity" xlink:to="loc_us-gaap_StockholdersEquity" order="20" use="optional" weight="1"/></calculationLink>






<roleRef xlink:type="simple" xlink:href="ucbi-20141231.xsd#ConsolidatedStatementOfCashFlows" roleURI="http://ucbi.com/role/ConsolidatedStatementOfCashFlows"/>
<calculationLink xlink:type="extended" xlink:role="http://ucbi.com/role/ConsolidatedStatementOfCashFlows">
<loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_NetCashProvidedByUsedInOperatingActivities" xlink:label="loc_us-gaap_NetCashProvidedByUsedInOperatingActivities"/>
<loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_NetIncomeLoss" xlink:label="loc_us-gaap_NetIncomeLoss"/>
<calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInOperatingActivities" xlink:to="loc_us-gaap_NetIncomeLoss" order="10" use="optional" weight="1"/>
<loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_DepreciationAmortizationAndAccretionNet" xlink:label="loc_us-gaap_DepreciationAmortizationAndAccretionNet"/>
<calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInOperatingActivities" xlink:to="loc_us-gaap_DepreciationAmortizationAndAccretionNet" order="20" use="optional" weight="1"/>
<loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_ProvisionForLoanLossesExpensed" xlink:label="loc_us-gaap_ProvisionForLoanLossesExpensed"/>
<calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInOperatingActivities" xlink:to="loc_us-gaap_ProvisionForLoanLossesExpensed" order="30" use="optional" weight="1"/>
<loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_ShareBasedCompensation" xlink:label="loc_us-gaap_ShareBasedCompensation"/>
<calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInOperatingActivities" xlink:to="loc_us-gaap_ShareBasedCompensation" order="40" use="optional" weight="1"/>
<loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_DeferredIncomeTaxExpenseBenefit" xlink:label="loc_us-gaap_DeferredIncomeTaxExpenseBenefit"/>
<calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInOperatingActivities" xlink:to="loc_us-gaap_DeferredIncomeTaxExpenseBenefit" order="50" use="optional" weight="1"/>
<loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_GainLossOnSaleOfSecuritiesNet" xlink:label="loc_us-gaap_GainLossOnSaleOfSecuritiesNet"/>
<calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInOperatingActivities" xlink:to="loc_us-gaap_GainLossOnSaleOfSecuritiesNet" order="60" use="optional" weight="-1"/>
<loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_GainsLossesOnExtinguishmentOfDebt" xlink:label="loc_us-gaap_GainsLossesOnExtinguishmentOfDebt"/>
<calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInOperatingActivities" xlink:to="loc_us-gaap_GainsLossesOnExtinguishmentOfDebt" order="70" use="optional" weight="-1"/>
<loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_GainsLossesOnSalesOfOtherRealEstate" xlink:label="loc_us-gaap_GainsLossesOnSalesOfOtherRealEstate"/>
<calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInOperatingActivities" xlink:to="loc_us-gaap_GainsLossesOnSalesOfOtherRealEstate" order="80" use="optional" weight="-1"/>
<loc xlink:type="locator" xlink:href="ucbi-20141231.xsd#ucbi_IncreaseDecreaseInOtherAssetsAndAccruedInterestReceivable" xlink:label="loc_ucbi_IncreaseDecreaseInOtherAssetsAndAccruedInterestReceivable"/>
<calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInOperatingActivities" xlink:to="loc_ucbi_IncreaseDecreaseInOtherAssetsAndAccruedInterestReceivable" order="90" use="optional" weight="-1"/>
<loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_IncreaseDecreaseInAccruedLiabilitiesAndOtherOperatingLiabilities" xlink:label="loc_us-gaap_IncreaseDecreaseInAccruedLiabilitiesAndOtherOperatingLiabilities"/>
<calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInOperatingActivities" xlink:to="loc_us-gaap_IncreaseDecreaseInAccruedLiabilitiesAndOtherOperatingLiabilities" order="100" use="optional" weight="1"/>
<loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_IncreaseDecreaseInLoansHeldForSale" xlink:label="loc_us-gaap_IncreaseDecreaseInLoansHeldForSale"/>
<calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInOperatingActivities" xlink:to="loc_us-gaap_IncreaseDecreaseInLoansHeldForSale" order="110" use="optional" weight="-1"/>
<loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_NetCashProvidedByUsedInInvestingActivities" xlink:label="loc_us-gaap_NetCashProvidedByUsedInInvestingActivities"/><loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_ProceedsFromMaturitiesPrepaymentsAndCallsOfHeldToMaturitySecurities" xlink:label="loc_us-gaap_ProceedsFromMaturitiesPrepaymentsAndCallsOfHeldToMaturitySecurities"/><calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInInvestingActivities" xlink:to="loc_us-gaap_ProceedsFromMaturitiesPrepaymentsAndCallsOfHeldToMaturitySecurities" order="10" use="optional" weight="1"/><loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_PaymentsToAcquireHeldToMaturitySecurities" xlink:label="loc_us-gaap_PaymentsToAcquireHeldToMaturitySecurities"/><calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInInvestingActivities" xlink:to="loc_us-gaap_PaymentsToAcquireHeldToMaturitySecurities" order="20" use="optional" weight="-1"/><loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_ProceedsFromSaleOfAvailableForSaleSecurities" xlink:label="loc_us-gaap_ProceedsFromSaleOfAvailableForSaleSecurities"/><calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInInvestingActivities" xlink:to="loc_us-gaap_ProceedsFromSaleOfAvailableForSaleSecurities" order="30" use="optional" weight="1"/><loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_ProceedsFromMaturitiesPrepaymentsAndCallsOfAvailableForSaleSecurities" xlink:label="loc_us-gaap_ProceedsFromMaturitiesPrepaymentsAndCallsOfAvailableForSaleSecurities"/><calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInInvestingActivities" xlink:to="loc_us-gaap_ProceedsFromMaturitiesPrepaymentsAndCallsOfAvailableForSaleSecurities" order="40" use="optional" weight="1"/><loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_PaymentsToAcquireAvailableForSaleSecurities" xlink:label="loc_us-gaap_PaymentsToAcquireAvailableForSaleSecurities"/><calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInInvestingActivities" xlink:to="loc_us-gaap_PaymentsToAcquireAvailableForSaleSecurities" order="50" use="optional" weight="-1"/><loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_PaymentsForProceedsFromLoansAndLeases" xlink:label="loc_us-gaap_PaymentsForProceedsFromLoansAndLeases"/><calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInInvestingActivities" xlink:to="loc_us-gaap_PaymentsForProceedsFromLoansAndLeases" order="60" use="optional" weight="-1"/><loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_ProceedsFromSaleOfNotesReceivable" xlink:label="loc_us-gaap_ProceedsFromSaleOfNotesReceivable"/><calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInInvestingActivities" xlink:to="loc_us-gaap_ProceedsFromSaleOfNotesReceivable" order="70" use="optional" weight="1"/><loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_PaymentsToAcquireBusinessesGross" xlink:label="loc_us-gaap_PaymentsToAcquireBusinessesGross"/><calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInInvestingActivities" xlink:to="loc_us-gaap_PaymentsToAcquireBusinessesGross" order="80" use="optional" weight="-1"/><loc xlink:type="locator" xlink:href="ucbi-20141231.xsd#ucbi_ProceedFromFdicIndemnificationAssetDisposals" xlink:label="loc_ucbi_ProceedFromFdicIndemnificationAssetDisposals"/><calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInInvestingActivities" xlink:to="loc_ucbi_ProceedFromFdicIndemnificationAssetDisposals" order="90" use="optional" weight="1"/><loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_PaymentsToAcquirePropertyPlantAndEquipment" xlink:label="loc_us-gaap_PaymentsToAcquirePropertyPlantAndEquipment"/><calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInInvestingActivities" xlink:to="loc_us-gaap_PaymentsToAcquirePropertyPlantAndEquipment" order="100" use="optional" weight="-1"/><loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_ProceedsFromSaleOfPropertyPlantAndEquipment" xlink:label="loc_us-gaap_ProceedsFromSaleOfPropertyPlantAndEquipment"/><calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInInvestingActivities" xlink:to="loc_us-gaap_ProceedsFromSaleOfPropertyPlantAndEquipment" order="110" use="optional" weight="1"/><loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_ProceedsFromSaleOfOtherRealEstate" xlink:label="loc_us-gaap_ProceedsFromSaleOfOtherRealEstate"/><calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInInvestingActivities" xlink:to="loc_us-gaap_ProceedsFromSaleOfOtherRealEstate" order="120" use="optional" weight="1"/><loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_NetCashProvidedByUsedInFinancingActivities" xlink:label="loc_us-gaap_NetCashProvidedByUsedInFinancingActivities"/><loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_IncreaseDecreaseInDeposits" xlink:label="loc_us-gaap_IncreaseDecreaseInDeposits"/><calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInFinancingActivities" xlink:to="loc_us-gaap_IncreaseDecreaseInDeposits" order="10" use="optional" weight="1"/><loc xlink:type="locator" xlink:href="ucbi-20141231.xsd#ucbi_NetChangeInFederalFundsPurchasedRepurchaseAgreementsAndOtherShortTermBorrowings" xlink:label="loc_ucbi_NetChangeInFederalFundsPurchasedRepurchaseAgreementsAndOtherShortTermBorrowings"/><calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInFinancingActivities" xlink:to="loc_ucbi_NetChangeInFederalFundsPurchasedRepurchaseAgreementsAndOtherShortTermBorrowings" order="20" use="optional" weight="-1"/><loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_ProceedsFromFederalHomeLoanBankAdvances" xlink:label="loc_us-gaap_ProceedsFromFederalHomeLoanBankAdvances"/><calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInFinancingActivities" xlink:to="loc_us-gaap_ProceedsFromFederalHomeLoanBankAdvances" order="30" use="optional" weight="1"/><loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_RepaymentsOfFederalHomeLoanBankBorrowings" xlink:label="loc_us-gaap_RepaymentsOfFederalHomeLoanBankBorrowings"/><calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInFinancingActivities" xlink:to="loc_us-gaap_RepaymentsOfFederalHomeLoanBankBorrowings" order="40" use="optional" weight="-1"/><loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_RepaymentsOfLongTermDebt" xlink:label="loc_us-gaap_RepaymentsOfLongTermDebt"/><calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInFinancingActivities" xlink:to="loc_us-gaap_RepaymentsOfLongTermDebt" order="50" use="optional" weight="-1"/><loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_ProceedsFromIssuanceOfLongTermDebt" xlink:label="loc_us-gaap_ProceedsFromIssuanceOfLongTermDebt"/><calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInFinancingActivities" xlink:to="loc_us-gaap_ProceedsFromIssuanceOfLongTermDebt" order="60" use="optional" weight="1"/><loc xlink:type="locator" xlink:href="ucbi-20141231.xsd#ucbi_ProceedsFromIssuanceOfCommonStockForDividendReinvestmentAndEmployeeBenefitPlans" xlink:label="loc_ucbi_ProceedsFromIssuanceOfCommonStockForDividendReinvestmentAndEmployeeBenefitPlans"/><calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInFinancingActivities" xlink:to="loc_ucbi_ProceedsFromIssuanceOfCommonStockForDividendReinvestmentAndEmployeeBenefitPlans" order="70" use="optional" weight="1"/><loc xlink:type="locator" xlink:href="ucbi-20141231.xsd#ucbi_ProceedsFromIssuanceOfCommonAndPreferredStockNetOfOfferingCosts" xlink:label="loc_ucbi_ProceedsFromIssuanceOfCommonAndPreferredStockNetOfOfferingCosts"/><calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInFinancingActivities" xlink:to="loc_ucbi_ProceedsFromIssuanceOfCommonAndPreferredStockNetOfOfferingCosts" order="80" use="optional" weight="1"/><loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_ProceedsFromWarrantExercises" xlink:label="loc_us-gaap_ProceedsFromWarrantExercises"/><calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInFinancingActivities" xlink:to="loc_us-gaap_ProceedsFromWarrantExercises" order="90" use="optional" weight="1"/><loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_PaymentsForRepurchaseOfWarrants" xlink:label="loc_us-gaap_PaymentsForRepurchaseOfWarrants"/><calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInFinancingActivities" xlink:to="loc_us-gaap_PaymentsForRepurchaseOfWarrants" order="100" use="optional" weight="-1"/><loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_PaymentsForRepurchaseOfPreferredStockAndPreferenceStock" xlink:label="loc_us-gaap_PaymentsForRepurchaseOfPreferredStockAndPreferenceStock"/><calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInFinancingActivities" xlink:to="loc_us-gaap_PaymentsForRepurchaseOfPreferredStockAndPreferenceStock" order="110" use="optional" weight="-1"/><loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_PaymentsOfDividendsCommonStock" xlink:label="loc_us-gaap_PaymentsOfDividendsCommonStock"/><calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInFinancingActivities" xlink:to="loc_us-gaap_PaymentsOfDividendsCommonStock" order="120" use="optional" weight="-1"/><loc xlink:type="locator" xlink:href="ucbi-20141231.xsd#ucbi_CashDividendsOnSeriesAPreferredStock" xlink:label="loc_ucbi_CashDividendsOnSeriesAPreferredStock"/><calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInFinancingActivities" xlink:to="loc_ucbi_CashDividendsOnSeriesAPreferredStock" order="130" use="optional" weight="-1"/><loc xlink:type="locator" xlink:href="ucbi-20141231.xsd#ucbi_CashDividendsOnSeriesBPreferredStock" xlink:label="loc_ucbi_CashDividendsOnSeriesBPreferredStock"/><calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInFinancingActivities" xlink:to="loc_ucbi_CashDividendsOnSeriesBPreferredStock" order="140" use="optional" weight="-1"/><loc xlink:type="locator" xlink:href="ucbi-20141231.xsd#ucbi_CashDividendsOnSeriesDPreferredStock" xlink:label="loc_ucbi_CashDividendsOnSeriesDPreferredStock"/><calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInFinancingActivities" xlink:to="loc_ucbi_CashDividendsOnSeriesDPreferredStock" order="150" use="optional" weight="-1"/><loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_CashAndCashEquivalentsPeriodIncreaseDecrease" xlink:label="loc_us-gaap_CashAndCashEquivalentsPeriodIncreaseDecrease"/><calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_CashAndCashEquivalentsPeriodIncreaseDecrease" xlink:to="loc_us-gaap_NetCashProvidedByUsedInOperatingActivities" order="10" use="optional" weight="1"/><calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_CashAndCashEquivalentsPeriodIncreaseDecrease" xlink:to="loc_us-gaap_NetCashProvidedByUsedInInvestingActivities" order="20" use="optional" weight="1"/><calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_CashAndCashEquivalentsPeriodIncreaseDecrease" xlink:to="loc_us-gaap_NetCashProvidedByUsedInFinancingActivities" order="30" use="optional" weight="1"/></calculationLink>



<roleRef xlink:type="simple" xlink:href="ucbi-20141231.xsd#BalanceSheetOffsettingDetails" roleURI="http://ucbi.com/role/BalanceSheetOffsettingDetails"/>
<calculationLink xlink:type="extended" xlink:role="http://ucbi.com/role/BalanceSheetOffsettingDetails">
<loc xlink:type="locator" xlink:href="ucbi-20141231.xsd#ucbi_RepurchaseAndReverseRepurchaseAgreementsNetAssetsBalance" xlink:label="loc_ucbi_RepurchaseAndReverseRepurchaseAgreementsNetAssetsBalance"/>
<loc xlink:type="locator" xlink:href="ucbi-20141231.xsd#ucbi_RepurchaseAndReverseRepurchaseAgreementsGrossAmountsOfRecognizedAssets" xlink:label="loc_ucbi_RepurchaseAndReverseRepurchaseAgreementsGrossAmountsOfRecognizedAssets"/>
<calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_ucbi_RepurchaseAndReverseRepurchaseAgreementsNetAssetsBalance" xlink:to="loc_ucbi_RepurchaseAndReverseRepurchaseAgreementsGrossAmountsOfRecognizedAssets" order="10" use="optional" weight="1"/>
<loc xlink:type="locator" xlink:href="ucbi-20141231.xsd#ucbi_RepurchaseAndReverseRepurchaseAgreementsGrossAmountsOffsetOnBalanceSheetAssets" xlink:label="loc_ucbi_RepurchaseAndReverseRepurchaseAgreementsGrossAmountsOffsetOnBalanceSheetAssets"/>
<calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_ucbi_RepurchaseAndReverseRepurchaseAgreementsNetAssetsBalance" xlink:to="loc_ucbi_RepurchaseAndReverseRepurchaseAgreementsGrossAmountsOffsetOnBalanceSheetAssets" order="20" use="optional" weight="-1"/>
<loc xlink:type="locator" xlink:href="ucbi-20141231.xsd#ucbi_RepurchaseAndReverseRepurchaseAgreementsNetAssets" xlink:label="loc_ucbi_RepurchaseAndReverseRepurchaseAgreementsNetAssets"/><calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_ucbi_RepurchaseAndReverseRepurchaseAgreementsNetAssets" xlink:to="loc_ucbi_RepurchaseAndReverseRepurchaseAgreementsNetAssetsBalance" order="10" use="optional" weight="1"/><loc xlink:type="locator" xlink:href="ucbi-20141231.xsd#ucbi_RepurchaseAndReverseRepurchaseAgreementsGrossAmountsNotOffsetInBalanceSheetAssetsOfFinancialInstruments" xlink:label="loc_ucbi_RepurchaseAndReverseRepurchaseAgreementsGrossAmountsNotOffsetInBalanceSheetAssetsOfFinancialInstruments"/><calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_ucbi_RepurchaseAndReverseRepurchaseAgreementsNetAssets" xlink:to="loc_ucbi_RepurchaseAndReverseRepurchaseAgreementsGrossAmountsNotOffsetInBalanceSheetAssetsOfFinancialInstruments" order="20" use="optional" weight="1"/><loc xlink:type="locator" xlink:href="ucbi-20141231.xsd#ucbi_RepurchaseAndReverseRepurchaseAgreementsGrossAmountsNotOffsetInBalanceSheetAssetsOfCollateralReceived" xlink:label="loc_ucbi_RepurchaseAndReverseRepurchaseAgreementsGrossAmountsNotOffsetInBalanceSheetAssetsOfCollateralReceived"/><calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_ucbi_RepurchaseAndReverseRepurchaseAgreementsNetAssets" xlink:to="loc_ucbi_RepurchaseAndReverseRepurchaseAgreementsGrossAmountsNotOffsetInBalanceSheetAssetsOfCollateralReceived" order="30" use="optional" weight="1"/><loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_DerivativeAssets" xlink:label="loc_us-gaap_DerivativeAssets"/><loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_DerivativeFairValueOfDerivativeAsset" xlink:label="loc_us-gaap_DerivativeFairValueOfDerivativeAsset"/><calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_DerivativeAssets" xlink:to="loc_us-gaap_DerivativeFairValueOfDerivativeAsset" order="10" use="optional" weight="1"/><loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_DerivativeFairValueOfDerivativeAssetAmountOffsetAgainstCollateral" xlink:label="loc_us-gaap_DerivativeFairValueOfDerivativeAssetAmountOffsetAgainstCollateral"/><calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_DerivativeAssets" xlink:to="loc_us-gaap_DerivativeFairValueOfDerivativeAssetAmountOffsetAgainstCollateral" order="20" use="optional" weight="1"/><loc xlink:type="locator" xlink:href="ucbi-20141231.xsd#ucbi_DerivativeAssetsNetAmount" xlink:label="loc_ucbi_DerivativeAssetsNetAmount"/><calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_ucbi_DerivativeAssetsNetAmount" xlink:to="loc_us-gaap_DerivativeAssets" order="10" use="optional" weight="1"/><loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_DerivativeCollateralObligationToReturnSecurities" xlink:label="loc_us-gaap_DerivativeCollateralObligationToReturnSecurities"/><calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_ucbi_DerivativeAssetsNetAmount" xlink:to="loc_us-gaap_DerivativeCollateralObligationToReturnSecurities" order="20" use="optional" weight="-1"/><loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_DerivativeFairValueOfDerivativeAssetAmountNotOffsetAgainstCollateral" xlink:label="loc_us-gaap_DerivativeFairValueOfDerivativeAssetAmountNotOffsetAgainstCollateral"/><calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_ucbi_DerivativeAssetsNetAmount" xlink:to="loc_us-gaap_DerivativeFairValueOfDerivativeAssetAmountNotOffsetAgainstCollateral" order="30" use="optional" weight="1"/><loc xlink:type="locator" xlink:href="ucbi-20141231.xsd#ucbi_OffsettingAssetsNetAssetBalance" xlink:label="loc_ucbi_OffsettingAssetsNetAssetBalance"/><loc xlink:type="locator" xlink:href="ucbi-20141231.xsd#ucbi_OffsettingAssetsGrossAmountsOfRecognizedAssets" xlink:label="loc_ucbi_OffsettingAssetsGrossAmountsOfRecognizedAssets"/><calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_ucbi_OffsettingAssetsNetAssetBalance" xlink:to="loc_ucbi_OffsettingAssetsGrossAmountsOfRecognizedAssets" order="10" use="optional" weight="1"/><loc xlink:type="locator" xlink:href="ucbi-20141231.xsd#ucbi_OffsettingAssetsGrossAmountsOffsetOnBalanceSheet" xlink:label="loc_ucbi_OffsettingAssetsGrossAmountsOffsetOnBalanceSheet"/><calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_ucbi_OffsettingAssetsNetAssetBalance" xlink:to="loc_ucbi_OffsettingAssetsGrossAmountsOffsetOnBalanceSheet" order="20" use="optional" weight="-1"/><loc xlink:type="locator" xlink:href="ucbi-20141231.xsd#ucbi_OffsettingAssetsNetAmount" xlink:label="loc_ucbi_OffsettingAssetsNetAmount"/><calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_ucbi_OffsettingAssetsNetAmount" xlink:to="loc_ucbi_OffsettingAssetsNetAssetBalance" order="10" use="optional" weight="1"/><loc xlink:type="locator" xlink:href="ucbi-20141231.xsd#ucbi_OffsettingAssetsGrossAmountsNotOffsetInBalanceSheetOfFinancialInstruments" xlink:label="loc_ucbi_OffsettingAssetsGrossAmountsNotOffsetInBalanceSheetOfFinancialInstruments"/><calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_ucbi_OffsettingAssetsNetAmount" xlink:to="loc_ucbi_OffsettingAssetsGrossAmountsNotOffsetInBalanceSheetOfFinancialInstruments" order="20" use="optional" weight="1"/><loc xlink:type="locator" xlink:href="ucbi-20141231.xsd#ucbi_OffsettingAssetsGrossAmountsNotOffsetInBalanceSheetOfCollateralReceived" xlink:label="loc_ucbi_OffsettingAssetsGrossAmountsNotOffsetInBalanceSheetOfCollateralReceived"/><calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_ucbi_OffsettingAssetsNetAmount" xlink:to="loc_ucbi_OffsettingAssetsGrossAmountsNotOffsetInBalanceSheetOfCollateralReceived" order="30" use="optional" weight="1"/><loc xlink:type="locator" xlink:href="ucbi-20141231.xsd#ucbi_RepurchaseAndReverseRepurchaseAgreementsNetLiabilities" xlink:label="loc_ucbi_RepurchaseAndReverseRepurchaseAgreementsNetLiabilities"/><loc xlink:type="locator" xlink:href="ucbi-20141231.xsd#ucbi_RepurchaseAndReverseRepurchaseAgreementsGrossAmountsNotOffsetInBalanceSheetLiabilitiesOfFinancialInstruments" xlink:label="loc_ucbi_RepurchaseAndReverseRepurchaseAgreementsGrossAmountsNotOffsetInBalanceSheetLiabilitiesOfFinancialInstruments"/><calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_ucbi_RepurchaseAndReverseRepurchaseAgreementsNetLiabilities" xlink:to="loc_ucbi_RepurchaseAndReverseRepurchaseAgreementsGrossAmountsNotOffsetInBalanceSheetLiabilitiesOfFinancialInstruments" order="10" use="optional" weight="1"/><loc xlink:type="locator" xlink:href="ucbi-20141231.xsd#ucbi_RepurchaseAndReverseRepurchaseAgreementsGrossAmountsNotOffSetInBalanceSheetLiabilitiesOfCollateralPledged" xlink:label="loc_ucbi_RepurchaseAndReverseRepurchaseAgreementsGrossAmountsNotOffSetInBalanceSheetLiabilitiesOfCollateralPledged"/><calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_ucbi_RepurchaseAndReverseRepurchaseAgreementsNetLiabilities" xlink:to="loc_ucbi_RepurchaseAndReverseRepurchaseAgreementsGrossAmountsNotOffSetInBalanceSheetLiabilitiesOfCollateralPledged" order="20" use="optional" weight="1"/><loc xlink:type="locator" xlink:href="ucbi-20141231.xsd#ucbi_RepurchaseAndReverseRepurchaseAgreementsNetLiabilitiesBalance" xlink:label="loc_ucbi_RepurchaseAndReverseRepurchaseAgreementsNetLiabilitiesBalance"/><calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_ucbi_RepurchaseAndReverseRepurchaseAgreementsNetLiabilities" xlink:to="loc_ucbi_RepurchaseAndReverseRepurchaseAgreementsNetLiabilitiesBalance" order="30" use="optional" weight="1"/><loc xlink:type="locator" xlink:href="ucbi-20141231.xsd#ucbi_DerivativesLiabilitiesNetBalance" xlink:label="loc_ucbi_DerivativesLiabilitiesNetBalance"/><loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_DerivativeFairValueOfDerivativeLiability" xlink:label="loc_us-gaap_DerivativeFairValueOfDerivativeLiability"/><calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_ucbi_DerivativesLiabilitiesNetBalance" xlink:to="loc_us-gaap_DerivativeFairValueOfDerivativeLiability" order="10" use="optional" weight="1"/><loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_DerivativeFairValueOfDerivativeLiabilityAmountOffsetAgainstCollateral" xlink:label="loc_us-gaap_DerivativeFairValueOfDerivativeLiabilityAmountOffsetAgainstCollateral"/><calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_ucbi_DerivativesLiabilitiesNetBalance" xlink:to="loc_us-gaap_DerivativeFairValueOfDerivativeLiabilityAmountOffsetAgainstCollateral" order="20" use="optional" weight="1"/><loc xlink:type="locator" xlink:href="ucbi-20141231.xsd#ucbi_DerivativeLiabilitiesNetAmount" xlink:label="loc_ucbi_DerivativeLiabilitiesNetAmount"/><calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_ucbi_DerivativeLiabilitiesNetAmount" xlink:to="loc_ucbi_DerivativesLiabilitiesNetBalance" order="10" use="optional" weight="1"/><loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_DerivativeCollateralRightToReclaimSecurities" xlink:label="loc_us-gaap_DerivativeCollateralRightToReclaimSecurities"/><calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_ucbi_DerivativeLiabilitiesNetAmount" xlink:to="loc_us-gaap_DerivativeCollateralRightToReclaimSecurities" order="20" use="optional" weight="-1"/><loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_DerivativeFairValueOfDerivativeLiabilityAmountNotOffsetAgainstCollateral" xlink:label="loc_us-gaap_DerivativeFairValueOfDerivativeLiabilityAmountNotOffsetAgainstCollateral"/><calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_ucbi_DerivativeLiabilitiesNetAmount" xlink:to="loc_us-gaap_DerivativeFairValueOfDerivativeLiabilityAmountNotOffsetAgainstCollateral" order="30" use="optional" weight="1"/><loc xlink:type="locator" xlink:href="ucbi-20141231.xsd#ucbi_OffsettingLiabilitiesNetAssetBalance" xlink:label="loc_ucbi_OffsettingLiabilitiesNetAssetBalance"/><loc xlink:type="locator" xlink:href="ucbi-20141231.xsd#ucbi_OffsettingLiabilitiesGrossAmountsOfRecognizedLiabilities" xlink:label="loc_ucbi_OffsettingLiabilitiesGrossAmountsOfRecognizedLiabilities"/><calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_ucbi_OffsettingLiabilitiesNetAssetBalance" xlink:to="loc_ucbi_OffsettingLiabilitiesGrossAmountsOfRecognizedLiabilities" order="10" use="optional" weight="1"/><loc xlink:type="locator" xlink:href="ucbi-20141231.xsd#ucbi_OffsettingLiabilitiesGrossAmountsOffsetOnBalanceSheet" xlink:label="loc_ucbi_OffsettingLiabilitiesGrossAmountsOffsetOnBalanceSheet"/><calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_ucbi_OffsettingLiabilitiesNetAssetBalance" xlink:to="loc_ucbi_OffsettingLiabilitiesGrossAmountsOffsetOnBalanceSheet" order="20" use="optional" weight="1"/><loc xlink:type="locator" xlink:href="ucbi-20141231.xsd#ucbi_OffsettingLiabilitiesNetAmount" xlink:label="loc_ucbi_OffsettingLiabilitiesNetAmount"/><calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_ucbi_OffsettingLiabilitiesNetAmount" xlink:to="loc_ucbi_OffsettingLiabilitiesNetAssetBalance" order="10" use="optional" weight="1"/><loc xlink:type="locator" xlink:href="ucbi-20141231.xsd#ucbi_OffsettingLiabilitiesGrossAmountsNotOffsetInBalanceSheetOfFinancialInstruments" xlink:label="loc_ucbi_OffsettingLiabilitiesGrossAmountsNotOffsetInBalanceSheetOfFinancialInstruments"/><calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_ucbi_OffsettingLiabilitiesNetAmount" xlink:to="loc_ucbi_OffsettingLiabilitiesGrossAmountsNotOffsetInBalanceSheetOfFinancialInstruments" order="20" use="optional" weight="1"/><loc xlink:type="locator" xlink:href="ucbi-20141231.xsd#ucbi_OffsettingLiabilitiesGrossAmountsNotOffsetInBalanceSheetOfCollateralPledged" xlink:label="loc_ucbi_OffsettingLiabilitiesGrossAmountsNotOffsetInBalanceSheetOfCollateralPledged"/><calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_ucbi_OffsettingLiabilitiesNetAmount" xlink:to="loc_ucbi_OffsettingLiabilitiesGrossAmountsNotOffsetInBalanceSheetOfCollateralPledged" order="30" use="optional" weight="-1"/></calculationLink>










<roleRef xlink:type="simple" xlink:href="ucbi-20141231.xsd#InvestmentSecuritiesDetails" roleURI="http://ucbi.com/role/InvestmentSecuritiesDetails"/>
<calculationLink xlink:type="extended" xlink:role="http://ucbi.com/role/InvestmentSecuritiesDetails">
<loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_HeldToMaturitySecuritiesFairValue" xlink:label="loc_us-gaap_HeldToMaturitySecuritiesFairValue"/>
<loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_HeldToMaturitySecuritiesAmortizedCostBeforeOtherThanTemporaryImpairment" xlink:label="loc_us-gaap_HeldToMaturitySecuritiesAmortizedCostBeforeOtherThanTemporaryImpairment"/>
<calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_HeldToMaturitySecuritiesFairValue" xlink:to="loc_us-gaap_HeldToMaturitySecuritiesAmortizedCostBeforeOtherThanTemporaryImpairment" order="10" use="optional" weight="1"/>
<loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_HeldToMaturitySecuritiesAccumulatedUnrecognizedHoldingGain" xlink:label="loc_us-gaap_HeldToMaturitySecuritiesAccumulatedUnrecognizedHoldingGain"/>
<calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_HeldToMaturitySecuritiesFairValue" xlink:to="loc_us-gaap_HeldToMaturitySecuritiesAccumulatedUnrecognizedHoldingGain" order="20" use="optional" weight="-1"/>
<loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_HeldToMaturitySecuritiesAccumulatedUnrecognizedHoldingLoss" xlink:label="loc_us-gaap_HeldToMaturitySecuritiesAccumulatedUnrecognizedHoldingLoss"/>
<calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_HeldToMaturitySecuritiesFairValue" xlink:to="loc_us-gaap_HeldToMaturitySecuritiesAccumulatedUnrecognizedHoldingLoss" order="30" use="optional" weight="1"/>
</calculationLink>
<roleRef xlink:type="simple" xlink:href="ucbi-20141231.xsd#InvestmentSecuritiesDetails1" roleURI="http://ucbi.com/role/InvestmentSecuritiesDetails1"/>
<calculationLink xlink:type="extended" xlink:role="http://ucbi.com/role/InvestmentSecuritiesDetails1">
<loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_AvailableForSaleSecurities" xlink:label="loc_us-gaap_AvailableForSaleSecurities"/>
<loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_AvailableForSaleSecuritiesAmortizedCost" xlink:label="loc_us-gaap_AvailableForSaleSecuritiesAmortizedCost"/>
<calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_AvailableForSaleSecurities" xlink:to="loc_us-gaap_AvailableForSaleSecuritiesAmortizedCost" order="10" use="optional" weight="1"/>
<loc xlink:type="locator" xlink:href="ucbi-20141231.xsd#ucbi_AvailableForSaleDebtSecuritiesGrossUnrealizedGainAccumulatedInInvestment" xlink:label="loc_ucbi_AvailableForSaleDebtSecuritiesGrossUnrealizedGainAccumulatedInInvestment"/>
<calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_AvailableForSaleSecurities" xlink:to="loc_ucbi_AvailableForSaleDebtSecuritiesGrossUnrealizedGainAccumulatedInInvestment" order="20" use="optional" weight="1"/>
<loc xlink:type="locator" xlink:href="ucbi-20141231.xsd#ucbi_AvailableForSaleDebtSecuritiesGrossUnrealizedLossAccumulatedInInvestment" xlink:label="loc_ucbi_AvailableForSaleDebtSecuritiesGrossUnrealizedLossAccumulatedInInvestment"/>
<calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_AvailableForSaleSecurities" xlink:to="loc_ucbi_AvailableForSaleDebtSecuritiesGrossUnrealizedLossAccumulatedInInvestment" order="30" use="optional" weight="-1"/>
</calculationLink>
<roleRef xlink:type="simple" xlink:href="ucbi-20141231.xsd#InvestmentSecuritiesDetails2" roleURI="http://ucbi.com/role/InvestmentSecuritiesDetails2"/>
<calculationLink xlink:type="extended" xlink:role="http://ucbi.com/role/InvestmentSecuritiesDetails2">
<loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_HeldToMaturitySecuritiesContinuousUnrealizedLossPositionFairValue" xlink:label="loc_us-gaap_HeldToMaturitySecuritiesContinuousUnrealizedLossPositionFairValue"/>
<loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_HeldToMaturitySecuritiesContinuousUnrealizedLossPositionLessThanTwelveMonthsFairValue" xlink:label="loc_us-gaap_HeldToMaturitySecuritiesContinuousUnrealizedLossPositionLessThanTwelveMonthsFairValue"/>
<calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_HeldToMaturitySecuritiesContinuousUnrealizedLossPositionFairValue" xlink:to="loc_us-gaap_HeldToMaturitySecuritiesContinuousUnrealizedLossPositionLessThanTwelveMonthsFairValue" order="10" use="optional" weight="1"/>
<loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_HeldToMaturitySecuritiesContinuousUnrealizedLossPositionTwelveMonthsOrLongerFairValue" xlink:label="loc_us-gaap_HeldToMaturitySecuritiesContinuousUnrealizedLossPositionTwelveMonthsOrLongerFairValue"/>
<calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_HeldToMaturitySecuritiesContinuousUnrealizedLossPositionFairValue" xlink:to="loc_us-gaap_HeldToMaturitySecuritiesContinuousUnrealizedLossPositionTwelveMonthsOrLongerFairValue" order="20" use="optional" weight="1"/>
<loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_HeldToMaturitySecuritiesContinuousUnrealizedLossPositionAccumulatedLoss" xlink:label="loc_us-gaap_HeldToMaturitySecuritiesContinuousUnrealizedLossPositionAccumulatedLoss"/><loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_HeldToMaturitySecuritiesContinuousUnrealizedLossPositionLessThan12MonthsAccumulatedLoss" xlink:label="loc_us-gaap_HeldToMaturitySecuritiesContinuousUnrealizedLossPositionLessThan12MonthsAccumulatedLoss"/><calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_HeldToMaturitySecuritiesContinuousUnrealizedLossPositionAccumulatedLoss" xlink:to="loc_us-gaap_HeldToMaturitySecuritiesContinuousUnrealizedLossPositionLessThan12MonthsAccumulatedLoss" order="10" use="optional" weight="1"/><loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_HeldToMaturitySecuritiesContinuousUnrealizedLossPosition12MonthsOrLongerAccumulatedLoss" xlink:label="loc_us-gaap_HeldToMaturitySecuritiesContinuousUnrealizedLossPosition12MonthsOrLongerAccumulatedLoss"/><calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_HeldToMaturitySecuritiesContinuousUnrealizedLossPositionAccumulatedLoss" xlink:to="loc_us-gaap_HeldToMaturitySecuritiesContinuousUnrealizedLossPosition12MonthsOrLongerAccumulatedLoss" order="20" use="optional" weight="1"/></calculationLink>

<roleRef xlink:type="simple" xlink:href="ucbi-20141231.xsd#InvestmentSecuritiesDetails3" roleURI="http://ucbi.com/role/InvestmentSecuritiesDetails3"/>
<calculationLink xlink:type="extended" xlink:role="http://ucbi.com/role/InvestmentSecuritiesDetails3">
<loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_AvailableForSaleSecuritiesContinuousUnrealizedLossPositionFairValue" xlink:label="loc_us-gaap_AvailableForSaleSecuritiesContinuousUnrealizedLossPositionFairValue"/>
<loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_AvailableForSaleSecuritiesContinuousUnrealizedLossPositionLessThanTwelveMonthsFairValue" xlink:label="loc_us-gaap_AvailableForSaleSecuritiesContinuousUnrealizedLossPositionLessThanTwelveMonthsFairValue"/>
<calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_AvailableForSaleSecuritiesContinuousUnrealizedLossPositionFairValue" xlink:to="loc_us-gaap_AvailableForSaleSecuritiesContinuousUnrealizedLossPositionLessThanTwelveMonthsFairValue" order="10" use="optional" weight="1"/>
<loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_AvailableForSaleSecuritiesContinuousUnrealizedLossPositionTwelveMonthsOrLongerFairValue" xlink:label="loc_us-gaap_AvailableForSaleSecuritiesContinuousUnrealizedLossPositionTwelveMonthsOrLongerFairValue"/>
<calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_AvailableForSaleSecuritiesContinuousUnrealizedLossPositionFairValue" xlink:to="loc_us-gaap_AvailableForSaleSecuritiesContinuousUnrealizedLossPositionTwelveMonthsOrLongerFairValue" order="20" use="optional" weight="1"/>
<loc xlink:type="locator" xlink:href="ucbi-20141231.xsd#ucbi_AvailableForSaleSecuritiesContinuousUnrealizedLossPositionAggregateLossesAccumulatedInInvestments" xlink:label="loc_ucbi_AvailableForSaleSecuritiesContinuousUnrealizedLossPositionAggregateLossesAccumulatedInInvestments"/><loc xlink:type="locator" xlink:href="ucbi-20141231.xsd#ucbi_AvailableForSaleSecuritiesContinuousUnrealizedLossPositionLessThan12MonthsAggregateLossesAccumulatedInInvestments" xlink:label="loc_ucbi_AvailableForSaleSecuritiesContinuousUnrealizedLossPositionLessThan12MonthsAggregateLossesAccumulatedInInvestments"/><calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_ucbi_AvailableForSaleSecuritiesContinuousUnrealizedLossPositionAggregateLossesAccumulatedInInvestments" xlink:to="loc_ucbi_AvailableForSaleSecuritiesContinuousUnrealizedLossPositionLessThan12MonthsAggregateLossesAccumulatedInInvestments" order="10" use="optional" weight="1"/><loc xlink:type="locator" xlink:href="ucbi-20141231.xsd#ucbi_AvailableForSaleSecuritiesContinuousUnrealizedLossPosition12MonthsOrLongerAggregateLossesAccumulatedInInvestments" xlink:label="loc_ucbi_AvailableForSaleSecuritiesContinuousUnrealizedLossPosition12MonthsOrLongerAggregateLossesAccumulatedInInvestments"/><calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_ucbi_AvailableForSaleSecuritiesContinuousUnrealizedLossPositionAggregateLossesAccumulatedInInvestments" xlink:to="loc_ucbi_AvailableForSaleSecuritiesContinuousUnrealizedLossPosition12MonthsOrLongerAggregateLossesAccumulatedInInvestments" order="20" use="optional" weight="1"/></calculationLink>

<roleRef xlink:type="simple" xlink:href="ucbi-20141231.xsd#InvestmentSecuritiesDetails4" roleURI="http://ucbi.com/role/InvestmentSecuritiesDetails4"/>
<calculationLink xlink:type="extended" xlink:role="http://ucbi.com/role/InvestmentSecuritiesDetails4">
<loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_AvailableForSaleSecuritiesAmortizedCost" xlink:label="loc_us-gaap_AvailableForSaleSecuritiesAmortizedCost"/>
<loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_AvailableForSaleSecuritiesDebtMaturitiesWithinOneYearAmortizedCost" xlink:label="loc_us-gaap_AvailableForSaleSecuritiesDebtMaturitiesWithinOneYearAmortizedCost"/>
<calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_AvailableForSaleSecuritiesAmortizedCost" xlink:to="loc_us-gaap_AvailableForSaleSecuritiesDebtMaturitiesWithinOneYearAmortizedCost" order="10" use="optional" weight="1"/>
<loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_AvailableForSaleSecuritiesDebtMaturitiesAfterOneThroughFiveYearsAmortizedCost" xlink:label="loc_us-gaap_AvailableForSaleSecuritiesDebtMaturitiesAfterOneThroughFiveYearsAmortizedCost"/>
<calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_AvailableForSaleSecuritiesAmortizedCost" xlink:to="loc_us-gaap_AvailableForSaleSecuritiesDebtMaturitiesAfterOneThroughFiveYearsAmortizedCost" order="20" use="optional" weight="1"/>
<loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_AvailableForSaleSecuritiesDebtMaturitiesAfterFiveThroughTenYearsAmortizedCost" xlink:label="loc_us-gaap_AvailableForSaleSecuritiesDebtMaturitiesAfterFiveThroughTenYearsAmortizedCost"/>
<calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_AvailableForSaleSecuritiesAmortizedCost" xlink:to="loc_us-gaap_AvailableForSaleSecuritiesDebtMaturitiesAfterFiveThroughTenYearsAmortizedCost" order="30" use="optional" weight="1"/>
<loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_AvailableForSaleSecuritiesDebtMaturitiesAfterTenYearsAmortizedCost" xlink:label="loc_us-gaap_AvailableForSaleSecuritiesDebtMaturitiesAfterTenYearsAmortizedCost"/>
<calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_AvailableForSaleSecuritiesAmortizedCost" xlink:to="loc_us-gaap_AvailableForSaleSecuritiesDebtMaturitiesAfterTenYearsAmortizedCost" order="40" use="optional" weight="1"/>
<loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_AvailableForSaleSecurities" xlink:label="loc_us-gaap_AvailableForSaleSecurities"/><loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_AvailableForSaleSecuritiesDebtMaturitiesWithinOneYearFairValue" xlink:label="loc_us-gaap_AvailableForSaleSecuritiesDebtMaturitiesWithinOneYearFairValue"/><calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_AvailableForSaleSecurities" xlink:to="loc_us-gaap_AvailableForSaleSecuritiesDebtMaturitiesWithinOneYearFairValue" order="10" use="optional" weight="1"/><loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_AvailableForSaleSecuritiesDebtMaturitiesAfterOneThroughFiveYearsFairValue" xlink:label="loc_us-gaap_AvailableForSaleSecuritiesDebtMaturitiesAfterOneThroughFiveYearsFairValue"/><calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_AvailableForSaleSecurities" xlink:to="loc_us-gaap_AvailableForSaleSecuritiesDebtMaturitiesAfterOneThroughFiveYearsFairValue" order="20" use="optional" weight="1"/><loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_AvailableForSaleSecuritiesDebtMaturitiesAfterFiveThroughTenYearsFairValue" xlink:label="loc_us-gaap_AvailableForSaleSecuritiesDebtMaturitiesAfterFiveThroughTenYearsFairValue"/><calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_AvailableForSaleSecurities" xlink:to="loc_us-gaap_AvailableForSaleSecuritiesDebtMaturitiesAfterFiveThroughTenYearsFairValue" order="30" use="optional" weight="1"/><loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_AvailableForSaleSecuritiesDebtMaturitiesAfterTenYearsFairValue" xlink:label="loc_us-gaap_AvailableForSaleSecuritiesDebtMaturitiesAfterTenYearsFairValue"/><calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_AvailableForSaleSecurities" xlink:to="loc_us-gaap_AvailableForSaleSecuritiesDebtMaturitiesAfterTenYearsFairValue" order="40" use="optional" weight="1"/><loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_HeldToMaturitySecuritiesAmortizedCostBeforeOtherThanTemporaryImpairment" xlink:label="loc_us-gaap_HeldToMaturitySecuritiesAmortizedCostBeforeOtherThanTemporaryImpairment"/><loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_HeldToMaturitySecuritiesDebtMaturitiesWithinOneYearNetCarryingAmount" xlink:label="loc_us-gaap_HeldToMaturitySecuritiesDebtMaturitiesWithinOneYearNetCarryingAmount"/><calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_HeldToMaturitySecuritiesAmortizedCostBeforeOtherThanTemporaryImpairment" xlink:to="loc_us-gaap_HeldToMaturitySecuritiesDebtMaturitiesWithinOneYearNetCarryingAmount" order="10" use="optional" weight="1"/><loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_HeldToMaturitySecuritiesDebtMaturitiesAfterOneThroughFiveYearsNetCarryingAmount" xlink:label="loc_us-gaap_HeldToMaturitySecuritiesDebtMaturitiesAfterOneThroughFiveYearsNetCarryingAmount"/><calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_HeldToMaturitySecuritiesAmortizedCostBeforeOtherThanTemporaryImpairment" xlink:to="loc_us-gaap_HeldToMaturitySecuritiesDebtMaturitiesAfterOneThroughFiveYearsNetCarryingAmount" order="20" use="optional" weight="1"/><loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_HeldToMaturitySecuritiesDebtMaturitiesAfterFiveThroughTenYearsNetCarryingAmount" xlink:label="loc_us-gaap_HeldToMaturitySecuritiesDebtMaturitiesAfterFiveThroughTenYearsNetCarryingAmount"/><calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_HeldToMaturitySecuritiesAmortizedCostBeforeOtherThanTemporaryImpairment" xlink:to="loc_us-gaap_HeldToMaturitySecuritiesDebtMaturitiesAfterFiveThroughTenYearsNetCarryingAmount" order="30" use="optional" weight="1"/><loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_HeldToMaturitySecuritiesDebtMaturitiesAfterTenYearsNetCarryingAmount" xlink:label="loc_us-gaap_HeldToMaturitySecuritiesDebtMaturitiesAfterTenYearsNetCarryingAmount"/><calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_HeldToMaturitySecuritiesAmortizedCostBeforeOtherThanTemporaryImpairment" xlink:to="loc_us-gaap_HeldToMaturitySecuritiesDebtMaturitiesAfterTenYearsNetCarryingAmount" order="40" use="optional" weight="1"/><loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_HeldToMaturitySecuritiesFairValue" xlink:label="loc_us-gaap_HeldToMaturitySecuritiesFairValue"/><loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_HeldToMaturitySecuritiesDebtMaturitiesWithinOneYearFairValue" xlink:label="loc_us-gaap_HeldToMaturitySecuritiesDebtMaturitiesWithinOneYearFairValue"/><calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_HeldToMaturitySecuritiesFairValue" xlink:to="loc_us-gaap_HeldToMaturitySecuritiesDebtMaturitiesWithinOneYearFairValue" order="10" use="optional" weight="1"/><loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_HeldToMaturitySecuritiesDebtMaturitiesAfterOneThroughFiveYearsFairValue" xlink:label="loc_us-gaap_HeldToMaturitySecuritiesDebtMaturitiesAfterOneThroughFiveYearsFairValue"/><calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_HeldToMaturitySecuritiesFairValue" xlink:to="loc_us-gaap_HeldToMaturitySecuritiesDebtMaturitiesAfterOneThroughFiveYearsFairValue" order="20" use="optional" weight="1"/><loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_HeldToMaturitySecuritiesDebtMaturitiesAfterFiveThroughTenYearsFairValue" xlink:label="loc_us-gaap_HeldToMaturitySecuritiesDebtMaturitiesAfterFiveThroughTenYearsFairValue"/><calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_HeldToMaturitySecuritiesFairValue" xlink:to="loc_us-gaap_HeldToMaturitySecuritiesDebtMaturitiesAfterFiveThroughTenYearsFairValue" order="30" use="optional" weight="1"/><loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_HeldToMaturitySecuritiesDebtMaturitiesAfterTenYearsFairValue" xlink:label="loc_us-gaap_HeldToMaturitySecuritiesDebtMaturitiesAfterTenYearsFairValue"/><calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_HeldToMaturitySecuritiesFairValue" xlink:to="loc_us-gaap_HeldToMaturitySecuritiesDebtMaturitiesAfterTenYearsFairValue" order="40" use="optional" weight="1"/></calculationLink>



<roleRef xlink:type="simple" xlink:href="ucbi-20141231.xsd#InvestmentSecuritiesDetails5" roleURI="http://ucbi.com/role/InvestmentSecuritiesDetails5"/>
<calculationLink xlink:type="extended" xlink:role="http://ucbi.com/role/InvestmentSecuritiesDetails5">
<loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_GainLossOnSaleOfSecuritiesNet" xlink:label="loc_us-gaap_GainLossOnSaleOfSecuritiesNet"/>
<loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_AvailableForSaleSecuritiesGrossRealizedGains" xlink:label="loc_us-gaap_AvailableForSaleSecuritiesGrossRealizedGains"/>
<calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_GainLossOnSaleOfSecuritiesNet" xlink:to="loc_us-gaap_AvailableForSaleSecuritiesGrossRealizedGains" order="10" use="optional" weight="1"/>
<loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_AvailableForSaleSecuritiesGrossRealizedLosses" xlink:label="loc_us-gaap_AvailableForSaleSecuritiesGrossRealizedLosses"/>
<calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_GainLossOnSaleOfSecuritiesNet" xlink:to="loc_us-gaap_AvailableForSaleSecuritiesGrossRealizedLosses" order="20" use="optional" weight="-1"/>
</calculationLink>
<roleRef xlink:type="simple" xlink:href="ucbi-20141231.xsd#LoansAndAllowanceForCreditLossesDetails2" roleURI="http://ucbi.com/role/LoansAndAllowanceForCreditLossesDetails2"/>
<calculationLink xlink:type="extended" xlink:role="http://ucbi.com/role/LoansAndAllowanceForCreditLossesDetails2">
<loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_FinancingReceivableAllowanceForCreditLosses" xlink:label="loc_us-gaap_FinancingReceivableAllowanceForCreditLosses"/>
<loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_FinancingReceivableAllowanceForCreditLossesIndividuallyEvaluatedForImpairment1" xlink:label="loc_us-gaap_FinancingReceivableAllowanceForCreditLossesIndividuallyEvaluatedForImpairment1"/>
<calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_FinancingReceivableAllowanceForCreditLosses" xlink:to="loc_us-gaap_FinancingReceivableAllowanceForCreditLossesIndividuallyEvaluatedForImpairment1" order="10" use="optional" weight="1"/>
<loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_FinancingReceivableAllowanceForCreditLossesCollectivelyEvaluatedForImpairment" xlink:label="loc_us-gaap_FinancingReceivableAllowanceForCreditLossesCollectivelyEvaluatedForImpairment"/>
<calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_FinancingReceivableAllowanceForCreditLosses" xlink:to="loc_us-gaap_FinancingReceivableAllowanceForCreditLossesCollectivelyEvaluatedForImpairment" order="20" use="optional" weight="1"/>
<loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_LoansAndLeasesReceivableNetOfDeferredIncome" xlink:label="loc_us-gaap_LoansAndLeasesReceivableNetOfDeferredIncome"/><loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_FinancingReceivableIndividuallyEvaluatedForImpairment" xlink:label="loc_us-gaap_FinancingReceivableIndividuallyEvaluatedForImpairment"/><calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_LoansAndLeasesReceivableNetOfDeferredIncome" xlink:to="loc_us-gaap_FinancingReceivableIndividuallyEvaluatedForImpairment" order="10" use="optional" weight="1"/><loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_FinancingReceivableCollectivelyEvaluatedForImpairment" xlink:label="loc_us-gaap_FinancingReceivableCollectivelyEvaluatedForImpairment"/><calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_LoansAndLeasesReceivableNetOfDeferredIncome" xlink:to="loc_us-gaap_FinancingReceivableCollectivelyEvaluatedForImpairment" order="20" use="optional" weight="1"/></calculationLink>

<roleRef xlink:type="simple" xlink:href="ucbi-20141231.xsd#LoansAndAllowanceForCreditLossesDetails8" roleURI="http://ucbi.com/role/LoansAndAllowanceForCreditLossesDetails8"/>
<calculationLink xlink:type="extended" xlink:role="http://ucbi.com/role/LoansAndAllowanceForCreditLossesDetails8">
<loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_FinancingReceivableRecordedInvestmentPastDue" xlink:label="loc_us-gaap_FinancingReceivableRecordedInvestmentPastDue"/>
<loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_FinancingReceivableRecordedInvestment30To59DaysPastDue" xlink:label="loc_us-gaap_FinancingReceivableRecordedInvestment30To59DaysPastDue"/>
<calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_FinancingReceivableRecordedInvestmentPastDue" xlink:to="loc_us-gaap_FinancingReceivableRecordedInvestment30To59DaysPastDue" order="10" use="optional" weight="1"/>
<loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_FinancingReceivableRecordedInvestment60To89DaysPastDue" xlink:label="loc_us-gaap_FinancingReceivableRecordedInvestment60To89DaysPastDue"/>
<calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_FinancingReceivableRecordedInvestmentPastDue" xlink:to="loc_us-gaap_FinancingReceivableRecordedInvestment60To89DaysPastDue" order="20" use="optional" weight="1"/>
<loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_FinancingReceivableRecordedInvestmentEqualToGreaterThan90DaysPastDue" xlink:label="loc_us-gaap_FinancingReceivableRecordedInvestmentEqualToGreaterThan90DaysPastDue"/>
<calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_FinancingReceivableRecordedInvestmentPastDue" xlink:to="loc_us-gaap_FinancingReceivableRecordedInvestmentEqualToGreaterThan90DaysPastDue" order="30" use="optional" weight="1"/>
<loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_LoansAndLeasesReceivableNetOfDeferredIncome" xlink:label="loc_us-gaap_LoansAndLeasesReceivableNetOfDeferredIncome"/><calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_LoansAndLeasesReceivableNetOfDeferredIncome" xlink:to="loc_us-gaap_FinancingReceivableRecordedInvestmentPastDue" order="10" use="optional" weight="1"/><loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_FinancingReceivableRecordedInvestmentCurrent" xlink:label="loc_us-gaap_FinancingReceivableRecordedInvestmentCurrent"/><calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_LoansAndLeasesReceivableNetOfDeferredIncome" xlink:to="loc_us-gaap_FinancingReceivableRecordedInvestmentCurrent" order="20" use="optional" weight="1"/></calculationLink>

<roleRef xlink:type="simple" xlink:href="ucbi-20141231.xsd#ForeclosedPropertyDetails" roleURI="http://ucbi.com/role/ForeclosedPropertyDetails"/>
<calculationLink xlink:type="extended" xlink:role="http://ucbi.com/role/ForeclosedPropertyDetails">
<loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_ForeclosedAssets" xlink:label="loc_us-gaap_ForeclosedAssets"/>
<loc xlink:type="locator" xlink:href="ucbi-20141231.xsd#ucbi_ForeclosedAssetsGross" xlink:label="loc_ucbi_ForeclosedAssetsGross"/>
<calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_ForeclosedAssets" xlink:to="loc_ucbi_ForeclosedAssetsGross" order="10" use="optional" weight="1"/>
<loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_ValuationAllowancesAndReservesBalance" xlink:label="loc_us-gaap_ValuationAllowancesAndReservesBalance"/>
<calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_ForeclosedAssets" xlink:to="loc_us-gaap_ValuationAllowancesAndReservesBalance" order="20" use="optional" weight="-1"/>
</calculationLink>
<roleRef xlink:type="simple" xlink:href="ucbi-20141231.xsd#ForeclosedPropertyDetails2" roleURI="http://ucbi.com/role/ForeclosedPropertyDetails2"/>
<calculationLink xlink:type="extended" xlink:role="http://ucbi.com/role/ForeclosedPropertyDetails2">
<loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_ForeclosedRealEstateExpense" xlink:label="loc_us-gaap_ForeclosedRealEstateExpense"/>
<loc xlink:type="locator" xlink:href="ucbi-20141231.xsd#ucbi_GainLossOnSalesOfForeclosedPropertyAssets" xlink:label="loc_ucbi_GainLossOnSalesOfForeclosedPropertyAssets"/>
<calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_ForeclosedRealEstateExpense" xlink:to="loc_ucbi_GainLossOnSalesOfForeclosedPropertyAssets" order="10" use="optional" weight="-1"/>
<loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_ProvisionForOtherLosses" xlink:label="loc_us-gaap_ProvisionForOtherLosses"/>
<calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_ForeclosedRealEstateExpense" xlink:to="loc_us-gaap_ProvisionForOtherLosses" order="20" use="optional" weight="1"/>
<loc xlink:type="locator" xlink:href="ucbi-20141231.xsd#ucbi_OperatingExpensesOnForeclosedProperties" xlink:label="loc_ucbi_OperatingExpensesOnForeclosedProperties"/>
<calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_ForeclosedRealEstateExpense" xlink:to="loc_ucbi_OperatingExpensesOnForeclosedProperties" order="30" use="optional" weight="1"/>
</calculationLink>
<roleRef xlink:type="simple" xlink:href="ucbi-20141231.xsd#PremisesAndEquipmentDetails" roleURI="http://ucbi.com/role/PremisesAndEquipmentDetails"/>
<calculationLink xlink:type="extended" xlink:role="http://ucbi.com/role/PremisesAndEquipmentDetails">
<loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_PropertyPlantAndEquipmentNet" xlink:label="loc_us-gaap_PropertyPlantAndEquipmentNet"/>
<loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment" xlink:label="loc_us-gaap_AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment"/>
<calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentNet" xlink:to="loc_us-gaap_AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment" order="20" use="optional" weight="-1"/>
<loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_PropertyPlantAndEquipmentGross" xlink:label="loc_us-gaap_PropertyPlantAndEquipmentGross"/>
<calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentNet" xlink:to="loc_us-gaap_PropertyPlantAndEquipmentGross" order="10" use="optional" weight="1"/>
</calculationLink>
<roleRef xlink:type="simple" xlink:href="ucbi-20141231.xsd#PremisesAndEquipmentDetails1" roleURI="http://ucbi.com/role/PremisesAndEquipmentDetails1"/>
<calculationLink xlink:type="extended" xlink:role="http://ucbi.com/role/PremisesAndEquipmentDetails1">
<loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_OperatingLeasesFutureMinimumPaymentsDue" xlink:label="loc_us-gaap_OperatingLeasesFutureMinimumPaymentsDue"/>
<loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_OperatingLeasesFutureMinimumPaymentsDueThereafter" xlink:label="loc_us-gaap_OperatingLeasesFutureMinimumPaymentsDueThereafter"/>
<calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_OperatingLeasesFutureMinimumPaymentsDue" xlink:to="loc_us-gaap_OperatingLeasesFutureMinimumPaymentsDueThereafter" order="60" use="optional" weight="1"/>
<loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_OperatingLeasesFutureMinimumPaymentsDueInFiveYears" xlink:label="loc_us-gaap_OperatingLeasesFutureMinimumPaymentsDueInFiveYears"/>
<calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_OperatingLeasesFutureMinimumPaymentsDue" xlink:to="loc_us-gaap_OperatingLeasesFutureMinimumPaymentsDueInFiveYears" order="50" use="optional" weight="1"/>
<loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_OperatingLeasesFutureMinimumPaymentsDueInFourYears" xlink:label="loc_us-gaap_OperatingLeasesFutureMinimumPaymentsDueInFourYears"/>
<calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_OperatingLeasesFutureMinimumPaymentsDue" xlink:to="loc_us-gaap_OperatingLeasesFutureMinimumPaymentsDueInFourYears" order="40" use="optional" weight="1"/>
<loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_OperatingLeasesFutureMinimumPaymentsDueInThreeYears" xlink:label="loc_us-gaap_OperatingLeasesFutureMinimumPaymentsDueInThreeYears"/>
<calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_OperatingLeasesFutureMinimumPaymentsDue" xlink:to="loc_us-gaap_OperatingLeasesFutureMinimumPaymentsDueInThreeYears" order="30" use="optional" weight="1"/>
<loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_OperatingLeasesFutureMinimumPaymentsDueInTwoYears" xlink:label="loc_us-gaap_OperatingLeasesFutureMinimumPaymentsDueInTwoYears"/>
<calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_OperatingLeasesFutureMinimumPaymentsDue" xlink:to="loc_us-gaap_OperatingLeasesFutureMinimumPaymentsDueInTwoYears" order="20" use="optional" weight="1"/>
<loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_OperatingLeasesFutureMinimumPaymentsDueCurrent" xlink:label="loc_us-gaap_OperatingLeasesFutureMinimumPaymentsDueCurrent"/>
<calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_OperatingLeasesFutureMinimumPaymentsDue" xlink:to="loc_us-gaap_OperatingLeasesFutureMinimumPaymentsDueCurrent" order="10" use="optional" weight="1"/>
</calculationLink>
<roleRef xlink:type="simple" xlink:href="ucbi-20141231.xsd#DepositsDetails" roleURI="http://ucbi.com/role/DepositsDetails"/>
<calculationLink xlink:type="extended" xlink:role="http://ucbi.com/role/DepositsDetails">
<loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_TimeDeposits" xlink:label="loc_us-gaap_TimeDeposits"/>
<loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_TimeDepositMaturitiesYearFour" xlink:label="loc_us-gaap_TimeDepositMaturitiesYearFour"/>
<calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_TimeDeposits" xlink:to="loc_us-gaap_TimeDepositMaturitiesYearFour" order="40" use="optional" weight="1"/>
<loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_TimeDepositMaturitiesYearThree" xlink:label="loc_us-gaap_TimeDepositMaturitiesYearThree"/>
<calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_TimeDeposits" xlink:to="loc_us-gaap_TimeDepositMaturitiesYearThree" order="30" use="optional" weight="1"/>
<loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_TimeDepositMaturitiesYearTwo" xlink:label="loc_us-gaap_TimeDepositMaturitiesYearTwo"/>
<calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_TimeDeposits" xlink:to="loc_us-gaap_TimeDepositMaturitiesYearTwo" order="20" use="optional" weight="1"/>
<loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_TimeDepositMaturitiesYearOne" xlink:label="loc_us-gaap_TimeDepositMaturitiesYearOne"/>
<calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_TimeDeposits" xlink:to="loc_us-gaap_TimeDepositMaturitiesYearOne" order="10" use="optional" weight="1"/>
<loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_TimeDepositMaturitiesYearFive" xlink:label="loc_us-gaap_TimeDepositMaturitiesYearFive"/>
<calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_TimeDeposits" xlink:to="loc_us-gaap_TimeDepositMaturitiesYearFive" order="50" use="optional" weight="1"/>
<loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_TimeDepositMaturitiesAfterYearFive" xlink:label="loc_us-gaap_TimeDepositMaturitiesAfterYearFive"/>
<calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_TimeDeposits" xlink:to="loc_us-gaap_TimeDepositMaturitiesAfterYearFive" order="60" use="optional" weight="1"/>
</calculationLink>
<roleRef xlink:type="simple" xlink:href="ucbi-20141231.xsd#FederalHomeLoanBankAdvancesDetails" roleURI="http://ucbi.com/role/FederalHomeLoanBankAdvancesDetails"/>
<calculationLink xlink:type="extended" xlink:role="http://ucbi.com/role/FederalHomeLoanBankAdvancesDetails">
<loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_AdvancesFromFederalHomeLoanBanks" xlink:label="loc_us-gaap_AdvancesFromFederalHomeLoanBanks"/>
<loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_FederalHomeLoanBankAdvancesMaturitiesSummaryDueWithinOneYearOfBalanceSheetDate" xlink:label="loc_us-gaap_FederalHomeLoanBankAdvancesMaturitiesSummaryDueWithinOneYearOfBalanceSheetDate"/>
<calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_AdvancesFromFederalHomeLoanBanks" xlink:to="loc_us-gaap_FederalHomeLoanBankAdvancesMaturitiesSummaryDueWithinOneYearOfBalanceSheetDate" order="10" use="optional" weight="1"/>
<loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_FederalHomeLoanBankAdvancesMaturitiesSummaryDueFromThreeToFourYearsOfBalanceSheetDate" xlink:label="loc_us-gaap_FederalHomeLoanBankAdvancesMaturitiesSummaryDueFromThreeToFourYearsOfBalanceSheetDate"/>
<calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_AdvancesFromFederalHomeLoanBanks" xlink:to="loc_us-gaap_FederalHomeLoanBankAdvancesMaturitiesSummaryDueFromThreeToFourYearsOfBalanceSheetDate" order="20" use="optional" weight="1"/>
</calculationLink>
<roleRef xlink:type="simple" xlink:href="ucbi-20141231.xsd#IncomeTaxesDetails1" roleURI="http://ucbi.com/role/IncomeTaxesDetails1"/>
<calculationLink xlink:type="extended" xlink:role="http://ucbi.com/role/IncomeTaxesDetails1">
<loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_IncomeTaxExpenseBenefit" xlink:label="loc_us-gaap_IncomeTaxExpenseBenefit"/>
<loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_IncomeTaxReconciliationIncomeTaxExpenseBenefitAtFederalStatutoryIncomeTaxRate" xlink:label="loc_us-gaap_IncomeTaxReconciliationIncomeTaxExpenseBenefitAtFederalStatutoryIncomeTaxRate"/>
<calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_IncomeTaxExpenseBenefit" xlink:to="loc_us-gaap_IncomeTaxReconciliationIncomeTaxExpenseBenefitAtFederalStatutoryIncomeTaxRate" order="10" use="optional" weight="1"/>
<loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_IncomeTaxReconciliationStateAndLocalIncomeTaxes" xlink:label="loc_us-gaap_IncomeTaxReconciliationStateAndLocalIncomeTaxes"/>
<calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_IncomeTaxExpenseBenefit" xlink:to="loc_us-gaap_IncomeTaxReconciliationStateAndLocalIncomeTaxes" order="20" use="optional" weight="1"/>
<loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_IncomeTaxReconciliationNondeductibleExpenseLifeInsurance" xlink:label="loc_us-gaap_IncomeTaxReconciliationNondeductibleExpenseLifeInsurance"/>
<calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_IncomeTaxExpenseBenefit" xlink:to="loc_us-gaap_IncomeTaxReconciliationNondeductibleExpenseLifeInsurance" order="30" use="optional" weight="1"/>
<loc xlink:type="locator" xlink:href="ucbi-20141231.xsd#ucbi_IncomeTaxReconciliationChangeInReservesForUncertainTaxPositions" xlink:label="loc_ucbi_IncomeTaxReconciliationChangeInReservesForUncertainTaxPositions"/>
<calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_IncomeTaxExpenseBenefit" xlink:to="loc_ucbi_IncomeTaxReconciliationChangeInReservesForUncertainTaxPositions" order="40" use="optional" weight="1"/>
<loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_IncomeTaxReconciliationTaxExemptIncome" xlink:label="loc_us-gaap_IncomeTaxReconciliationTaxExemptIncome"/>
<calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_IncomeTaxExpenseBenefit" xlink:to="loc_us-gaap_IncomeTaxReconciliationTaxExemptIncome" order="50" use="optional" weight="-1"/>
<loc xlink:type="locator" xlink:href="ucbi-20141231.xsd#ucbi_IncomeTaxReconciliationTaxNonDeductibleInterestExpense" xlink:label="loc_ucbi_IncomeTaxReconciliationTaxNonDeductibleInterestExpense"/>
<calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_IncomeTaxExpenseBenefit" xlink:to="loc_ucbi_IncomeTaxReconciliationTaxNonDeductibleInterestExpense" order="60" use="optional" weight="1"/>
<loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_IncomeTaxReconciliationNondeductibleExpenseShareBasedCompensationCost" xlink:label="loc_us-gaap_IncomeTaxReconciliationNondeductibleExpenseShareBasedCompensationCost"/>
<calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_IncomeTaxExpenseBenefit" xlink:to="loc_us-gaap_IncomeTaxReconciliationNondeductibleExpenseShareBasedCompensationCost" order="70" use="optional" weight="1"/>
<loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_IncomeTaxReconciliationTaxCredits" xlink:label="loc_us-gaap_IncomeTaxReconciliationTaxCredits"/>
<calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_IncomeTaxExpenseBenefit" xlink:to="loc_us-gaap_IncomeTaxReconciliationTaxCredits" order="80" use="optional" weight="-1"/>
<loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_IncomeTaxReconciliationChangeInEnactedTaxRate" xlink:label="loc_us-gaap_IncomeTaxReconciliationChangeInEnactedTaxRate"/>
<calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_IncomeTaxExpenseBenefit" xlink:to="loc_us-gaap_IncomeTaxReconciliationChangeInEnactedTaxRate" order="90" use="optional" weight="1"/>
<loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_IncomeTaxReconciliationChangeInDeferredTaxAssetsValuationAllowance" xlink:label="loc_us-gaap_IncomeTaxReconciliationChangeInDeferredTaxAssetsValuationAllowance"/>
<calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_IncomeTaxExpenseBenefit" xlink:to="loc_us-gaap_IncomeTaxReconciliationChangeInDeferredTaxAssetsValuationAllowance" order="100" use="optional" weight="1"/>
<loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_ValuationAllowanceDeferredTaxAssetChangeInAmount" xlink:label="loc_us-gaap_ValuationAllowanceDeferredTaxAssetChangeInAmount"/>
<calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_IncomeTaxExpenseBenefit" xlink:to="loc_us-gaap_ValuationAllowanceDeferredTaxAssetChangeInAmount" order="110" use="optional" weight="-1"/>
<loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_IncomeTaxReconciliationOtherReconcilingItems" xlink:label="loc_us-gaap_IncomeTaxReconciliationOtherReconcilingItems"/>
<calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_IncomeTaxExpenseBenefit" xlink:to="loc_us-gaap_IncomeTaxReconciliationOtherReconcilingItems" order="120" use="optional" weight="1"/>
</calculationLink>
<roleRef xlink:type="simple" xlink:href="ucbi-20141231.xsd#IncomeTaxesDetails2" roleURI="http://ucbi.com/role/IncomeTaxesDetails2"/>
<calculationLink xlink:type="extended" xlink:role="http://ucbi.com/role/IncomeTaxesDetails2">
<loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_DeferredTaxAssetsGross" xlink:label="loc_us-gaap_DeferredTaxAssetsGross"/>
<loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsProvisionForLoanLosses" xlink:label="loc_us-gaap_DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsProvisionForLoanLosses"/>
<calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_DeferredTaxAssetsGross" xlink:to="loc_us-gaap_DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsProvisionForLoanLosses" order="10" use="optional" weight="1"/>
<loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_DeferredTaxAssetsOperatingLossCarryforwards" xlink:label="loc_us-gaap_DeferredTaxAssetsOperatingLossCarryforwards"/>
<calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_DeferredTaxAssetsGross" xlink:to="loc_us-gaap_DeferredTaxAssetsOperatingLossCarryforwards" order="20" use="optional" weight="1"/>
<loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefits" xlink:label="loc_us-gaap_DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefits"/>
<calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_DeferredTaxAssetsGross" xlink:to="loc_us-gaap_DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefits" order="30" use="optional" weight="1"/>
<loc xlink:type="locator" xlink:href="ucbi-20141231.xsd#ucbi_DeferredTaxAssetsReserveForLossesOnForeclosedProperties" xlink:label="loc_ucbi_DeferredTaxAssetsReserveForLossesOnForeclosedProperties"/>
<calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_DeferredTaxAssetsGross" xlink:to="loc_ucbi_DeferredTaxAssetsReserveForLossesOnForeclosedProperties" order="40" use="optional" weight="1"/>
<loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsShareBasedCompensationCost" xlink:label="loc_us-gaap_DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsShareBasedCompensationCost"/>
<calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_DeferredTaxAssetsGross" xlink:to="loc_us-gaap_DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsShareBasedCompensationCost" order="50" use="optional" weight="1"/>
<loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsAccruedLiabilities" xlink:label="loc_us-gaap_DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsAccruedLiabilities"/>
<calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_DeferredTaxAssetsGross" xlink:to="loc_us-gaap_DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsAccruedLiabilities" order="60" use="optional" weight="1"/>
<loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_DeferredTaxAssetsInvestments" xlink:label="loc_us-gaap_DeferredTaxAssetsInvestments"/>
<calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_DeferredTaxAssetsGross" xlink:to="loc_us-gaap_DeferredTaxAssetsInvestments" order="70" use="optional" weight="1"/>
<loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsPensions" xlink:label="loc_us-gaap_DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsPensions"/>
<calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_DeferredTaxAssetsGross" xlink:to="loc_us-gaap_DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsPensions" order="80" use="optional" weight="1"/>
<loc xlink:type="locator" xlink:href="ucbi-20141231.xsd#ucbi_DeferredTaxAssetsAcquiredIntangibles" xlink:label="loc_ucbi_DeferredTaxAssetsAcquiredIntangibles"/>
<calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_DeferredTaxAssetsGross" xlink:to="loc_ucbi_DeferredTaxAssetsAcquiredIntangibles" order="90" use="optional" weight="1"/>
<loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_DeferredTaxAssetsUnrealizedLossesOnAvailableforSaleSecuritiesGross" xlink:label="loc_us-gaap_DeferredTaxAssetsUnrealizedLossesOnAvailableforSaleSecuritiesGross"/>
<calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_DeferredTaxAssetsGross" xlink:to="loc_us-gaap_DeferredTaxAssetsUnrealizedLossesOnAvailableforSaleSecuritiesGross" order="100" use="optional" weight="1"/>
<loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_DeferredTaxAssetsUnrealizedCurrencyLosses" xlink:label="loc_us-gaap_DeferredTaxAssetsUnrealizedCurrencyLosses"/>
<calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_DeferredTaxAssetsGross" xlink:to="loc_us-gaap_DeferredTaxAssetsUnrealizedCurrencyLosses" order="110" use="optional" weight="1"/>
<loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_DeferredTaxAssetsOther" xlink:label="loc_us-gaap_DeferredTaxAssetsOther"/>
<calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_DeferredTaxAssetsGross" xlink:to="loc_us-gaap_DeferredTaxAssetsOther" order="120" use="optional" weight="1"/>
<loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_DeferredTaxLiabilities" xlink:label="loc_us-gaap_DeferredTaxLiabilities"/><loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_DeferredTaxLiabilitiesUnrealizedGainsOnTradingSecurities" xlink:label="loc_us-gaap_DeferredTaxLiabilitiesUnrealizedGainsOnTradingSecurities"/><calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_DeferredTaxLiabilities" xlink:to="loc_us-gaap_DeferredTaxLiabilitiesUnrealizedGainsOnTradingSecurities" order="10" use="optional" weight="1"/><loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_DeferredTaxLiabilitiesUnrealizedCurrencyTransactionGains" xlink:label="loc_us-gaap_DeferredTaxLiabilitiesUnrealizedCurrencyTransactionGains"/><calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_DeferredTaxLiabilities" xlink:to="loc_us-gaap_DeferredTaxLiabilitiesUnrealizedCurrencyTransactionGains" order="20" use="optional" weight="1"/><loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_DeferredTaxLiabilitiesPropertyPlantAndEquipment" xlink:label="loc_us-gaap_DeferredTaxLiabilitiesPropertyPlantAndEquipment"/><calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_DeferredTaxLiabilities" xlink:to="loc_us-gaap_DeferredTaxLiabilitiesPropertyPlantAndEquipment" order="30" use="optional" weight="1"/><loc xlink:type="locator" xlink:href="ucbi-20141231.xsd#ucbi_DeferredTaxLiabilitiesLoanCosts" xlink:label="loc_ucbi_DeferredTaxLiabilitiesLoanCosts"/><calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_DeferredTaxLiabilities" xlink:to="loc_ucbi_DeferredTaxLiabilitiesLoanCosts" order="40" use="optional" weight="1"/><loc xlink:type="locator" xlink:href="ucbi-20141231.xsd#ucbi_DeferredTaxLiabilitiesGainFromAcquisition" xlink:label="loc_ucbi_DeferredTaxLiabilitiesGainFromAcquisition"/><calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_DeferredTaxLiabilities" xlink:to="loc_ucbi_DeferredTaxLiabilitiesGainFromAcquisition" order="50" use="optional" weight="1"/><loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_DeferredTaxLiabilitiesPrepaidExpenses" xlink:label="loc_us-gaap_DeferredTaxLiabilitiesPrepaidExpenses"/><calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_DeferredTaxLiabilities" xlink:to="loc_us-gaap_DeferredTaxLiabilitiesPrepaidExpenses" order="60" use="optional" weight="1"/><loc xlink:type="locator" xlink:href="ucbi-20141231.xsd#ucbi_DeferredTaxLiabilityUncertainTaxPositions" xlink:label="loc_ucbi_DeferredTaxLiabilityUncertainTaxPositions"/><calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_DeferredTaxLiabilities" xlink:to="loc_ucbi_DeferredTaxLiabilityUncertainTaxPositions" order="70" use="optional" weight="1"/><loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_DeferredTaxAssetsLiabilitiesNet" xlink:label="loc_us-gaap_DeferredTaxAssetsLiabilitiesNet"/><calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_DeferredTaxAssetsLiabilitiesNet" xlink:to="loc_us-gaap_DeferredTaxAssetsGross" order="10" use="optional" weight="1"/><calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_DeferredTaxAssetsLiabilitiesNet" xlink:to="loc_us-gaap_DeferredTaxLiabilities" order="20" use="optional" weight="-1"/><loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_DeferredTaxAssetsValuationAllowance" xlink:label="loc_us-gaap_DeferredTaxAssetsValuationAllowance"/><calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_DeferredTaxAssetsLiabilitiesNet" xlink:to="loc_us-gaap_DeferredTaxAssetsValuationAllowance" order="30" use="optional" weight="-1"/></calculationLink>


<roleRef xlink:type="simple" xlink:href="ucbi-20141231.xsd#PensionAndEmployeeBenefitPlansDetails2" roleURI="http://ucbi.com/role/PensionAndEmployeeBenefitPlansDetails2"/>
<calculationLink xlink:type="extended" xlink:role="http://ucbi.com/role/PensionAndEmployeeBenefitPlansDetails2">
<loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_DefinedBenefitPlanNetPeriodicBenefitCost" xlink:label="loc_us-gaap_DefinedBenefitPlanNetPeriodicBenefitCost"/>
<loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_DefinedBenefitPlanServiceCost" xlink:label="loc_us-gaap_DefinedBenefitPlanServiceCost"/>
<calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_DefinedBenefitPlanNetPeriodicBenefitCost" xlink:to="loc_us-gaap_DefinedBenefitPlanServiceCost" order="10" use="optional" weight="1"/>
<loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_DefinedBenefitPlanInterestCost" xlink:label="loc_us-gaap_DefinedBenefitPlanInterestCost"/>
<calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_DefinedBenefitPlanNetPeriodicBenefitCost" xlink:to="loc_us-gaap_DefinedBenefitPlanInterestCost" order="20" use="optional" weight="1"/>
<loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_DefinedBenefitPlanAmortizationOfPriorServiceCostCredit" xlink:label="loc_us-gaap_DefinedBenefitPlanAmortizationOfPriorServiceCostCredit"/>
<calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_DefinedBenefitPlanNetPeriodicBenefitCost" xlink:to="loc_us-gaap_DefinedBenefitPlanAmortizationOfPriorServiceCostCredit" order="30" use="optional" weight="1"/>
<loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_DefinedBenefitPlanAmortizationOfGainsLosses" xlink:label="loc_us-gaap_DefinedBenefitPlanAmortizationOfGainsLosses"/>
<calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_DefinedBenefitPlanNetPeriodicBenefitCost" xlink:to="loc_us-gaap_DefinedBenefitPlanAmortizationOfGainsLosses" order="40" use="optional" weight="-1"/>
</calculationLink>
<roleRef xlink:type="simple" xlink:href="ucbi-20141231.xsd#AssetsAndLiabilitiesMeasuredAtFairValueDetails3" roleURI="http://ucbi.com/role/AssetsAndLiabilitiesMeasuredAtFairValueDetails3"/>
<calculationLink xlink:type="extended" xlink:role="http://ucbi.com/role/AssetsAndLiabilitiesMeasuredAtFairValueDetails3">
<loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_AssetsFairValueDisclosure" xlink:label="loc_us-gaap_AssetsFairValueDisclosure"/>
<loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_LoansReceivableFairValueDisclosure" xlink:label="loc_us-gaap_LoansReceivableFairValueDisclosure"/>
<calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_AssetsFairValueDisclosure" xlink:to="loc_us-gaap_LoansReceivableFairValueDisclosure" order="10" use="optional" weight="1"/>
<loc xlink:type="locator" xlink:href="ucbi-20141231.xsd#ucbi_ForeclosedPropertiesFairValueDisclosure" xlink:label="loc_ucbi_ForeclosedPropertiesFairValueDisclosure"/>
<calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_AssetsFairValueDisclosure" xlink:to="loc_ucbi_ForeclosedPropertiesFairValueDisclosure" order="20" use="optional" weight="1"/>
</calculationLink>
</linkbase>
