Rule13a-14(d)/15d-14(d) Certifications.

 

I,Kunal K. Singh, certify that:

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| 1.     | I have reviewed this report  on Form 10-K and all reports on Form 10-D required to be filed in respect of  the period covered by this report on Form 10-K of the JPMBB Commercial Mortgage  Securities Trust 2013-C12 (the "Exchange Act periodic reports");                                                                                                                                                                                                                                                                                                           |
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| 2.     | Based on my knowledge, the  Exchange Act periodic reports, taken as a whole, do not contain any untrue  statement of a material fact or omit to state a material fact necessary to  make the statements made, in light of the circumstances under which such  statements were made, not misleading with respect to the period covered by  this report;                                                                                                                                                                                                                           |
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| 3.     | Based on my knowledge, all of  the distribution, servicing and other information required to be provided  under Form 10-D for the period covered by this report is included in the  Exchange Act periodic reports;                                                                                                                                                                                                                                                                                                                                                               |
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| 4.     | Based on my knowledge and  the servicer compliance statements required in this report under Item 1123 of  Regulation AB, and except as disclosed in the Exchange Act periodic reports,  the servicers have fulfilled their obligations under the servicing agreements  in all material respects; and                                                                                                                                                                                                                                                                             |
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| 5.     | All of the reports on  assessment of compliance with servicing criteria for asset-backed securities  and their related attestation reports on assessment of compliance with  servicing criteria for asset-backed securities required to be included in  this report in accordance with Item 1122 of Regulation AB and Exchange Act  Rules 13a-18 and 15d-18 have been included as an exhibit to this report,  except as otherwise disclosed in this report. Any material instances of  noncompliance described in such reports have been disclosed in this report on  Form 10-K. |
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Ingiving the certifications above, I have reasonably relied on informationprovided to me by the following unaffiliated parties:Midland Loan Services, a Division of PNC Bank, National Association, as MasterServicer, LNR Partners, LLC, as Special Servicer, Wells Fargo Bank, NationalAssociation, as Trustee and Certificate Administrator, Wells Fargo Bank,National Association, as Custodian, Pentalpha Surveillance LLC, as Senior TrustAdvisor, KeyBank National Association (as successor to KeyCorp Real EstateCapital Markets, Inc.), as Primary Servicer, Midland Loan Services, a Divisionof PNC Bank, National Association, as Primary Servicer for the IDS CenterMortgage Loan, KeyBank National Association (as successor to KeyCorp RealEstate Capital Markets, Inc.), as Special Servicer for the IDS Center MortgageLoan, Wells Fargo Bank, National Association, as Trustee and Certificate Administratorfor the IDS Center Mortgage Loan, Wells Fargo Bank, National Association, asCustodian for the IDS Center Mortgage Loan, Pentalpha Surveillance LLC, asSenior Trust Advisor for the IDS Center Mortgage Loan, Midland Loan Services, aDivision of PNC Bank, National Association, as Primary Servicer for theSouthridge Mall Mortgage Loan, Midland Loan Services, a Division of PNC Bank,National Association, as Special Servicer for the Southridge Mall MortgageLoan, Wells Fargo Bank, National Association, as Trustee and CertificateAdministrator for the Southridge Mall Mortgage Loan, Wells Fargo Bank, NationalAssociation, as Custodian for the Southridge Mall Mortgage Loan, and PentalphaSurveillance LLC, as Senior Trust Advisor for the Southridge Mall MortgageLoan.

 

Dated: March 21, 2017

 

/s/ Kunal K. SinghPresident and Chief Executive Officer

(senior officer in charge ofsecuritization of the depositor)