EX-31
Rule 13a-14(d)/15d-14(d) Certifications.





I,
Scott Epperson, certify that:



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 GS
Mortgage Securities Trust 2020-GC45 (the "Exchange Act periodic
reports");



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;



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;



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



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.



In
giving the certifications above, I have reasonably relied on information
provided to me by the following unaffiliated parties:



Midland
Loan Services, a Division of PNC Bank, National Association, as Master
Servicer, Midland Loan Services, a Division of PNC Bank, National Association,
as General Special Servicer prior to May 10, 2023, K-Star Asset Management LLC,
as General Special Servicer on and after May 10, 2023, CWCapital Asset
Management LLC, as Starwood Special Servicer, Wells Fargo Bank, National
Association, as Trustee and Certificate Administrator, Wells Fargo Bank,
National Association, as Custodian, Pentalpha Surveillance LLC, as Operating
Advisor, Computershare Trust Company, National Association, as Servicing Function
Participant for the Certificate Administrator, Computershare Trust Company,
National Association, as Servicing Function Participant for the Custodian,
Midland Loan Services, a Division of PNC Bank, National Association, as Primary
Servicer for the 19100 Ridgewood Mortgage Loan, Midland Loan Services, a
Division of PNC Bank, National Association, as Special Servicer for the 19100
Ridgewood Mortgage Loan prior to May 8, 2023, K-Star Asset Management LLC, as
Special Servicer for the 19100 Ridgewood Mortgage Loan on and after May 8,
2023, Wells Fargo Bank, National Association, as Trustee for the 19100
Ridgewood Mortgage Loan, Wells Fargo Bank, National Association, as Custodian
for the 19100 Ridgewood Mortgage Loan, Park Bridge Lender Services LLC, as Operating
Advisor for the 19100 Ridgewood Mortgage Loan, Computershare Trust Company,
National Association, as Servicing Function Participant for the Custodian for
the 19100 Ridgewood Mortgage Loan, Midland Loan Services, a Division of PNC
Bank, National Association, as Primary Servicer for the Harvey Building
Products Mortgage Loan, Midland Loan Services, a Division of PNC Bank, National
Association, as Special Servicer for the Harvey Building Products Mortgage Loan
prior to May 5, 2023, K-Star Asset Management LLC, as Special Servicer for the
Harvey Building Products Mortgage Loan on and after May 5, 2023, Wells Fargo
Bank, National Association, as Trustee for the Harvey Building Products
Mortgage Loan, Wells Fargo Bank, National Association, as Custodian for the
Harvey Building Products Mortgage Loan, Pentalpha Surveillance LLC, as
Operating Advisor for the Harvey Building Products Mortgage Loan, Computershare
Trust Company, National Association, as Servicing Function Participant for the
Custodian for the Harvey Building Products Mortgage Loan, KeyBank National
Association, as Primary Servicer for the Bellagio Hotel and Casino Mortgage
Loan, Situs Holdings, LLC, as Special Servicer for the Bellagio Hotel and
Casino Mortgage Loan, Wells Fargo Bank, National Association, as Trustee for
the Bellagio Hotel and Casino Mortgage Loan, Wells Fargo Bank, National
Association, as Custodian for the Bellagio Hotel and Casino Mortgage Loan, Park
Bridge Lender Services LLC, as Operating Advisor for the Bellagio Hotel and Casino
Mortgage Loan, Computershare Trust Company, National Association, as Servicing
Function Participant for the Custodian for the Bellagio Hotel and Casino
Mortgage Loan, Midland Loan Services, a Division of PNC Bank, National
Association, as Primary Servicer for the Broadcasting Square Mortgage Loan,
Rialto Capital Advisors, LLC, as Special Servicer for the Broadcasting Square
Mortgage Loan, Wells Fargo Bank, National Association, as Trustee for the
Broadcasting Square Mortgage Loan, Wells Fargo Bank, National Association, as
Custodian for the Broadcasting Square Mortgage Loan, Park Bridge Lender
Services LLC, as Operating Advisor for the Broadcasting Square Mortgage Loan,
Computershare Trust Company, National Association, as Servicing Function
Participant for the Custodian for the Broadcasting Square Mortgage Loan,
Midland Loan Services, a Division of PNC Bank, National Association, as Primary
Servicer for The Shoppes at Blackstone Mortgage Loan, Rialto Capital Advisors,
LLC, as Special Servicer for The Shoppes at Blackstone Mortgage Loan, Wells
Fargo Bank, National Association, as Trustee for The Shoppes at Blackstone
Mortgage Loan, Wells Fargo Bank, National Association, as Custodian for The
Shoppes at Blackstone Mortgage Loan, Park Bridge Lender Services LLC, as
Operating Advisor for The Shoppes at Blackstone Mortgage Loan, Computershare
Trust Company, National Association, as Servicing Function Participant for the
Custodian for The Shoppes at Blackstone Mortgage Loan, Midland Loan Services, a
Division of PNC Bank, National Association, as Primary Servicer for the PCI
Pharma Portfolio Mortgage Loan, Rialto Capital Advisors, LLC, as Special
Servicer for the PCI Pharma Portfolio Mortgage Loan, Wells Fargo Bank, National
Association, as Trustee for the PCI Pharma Portfolio Mortgage Loan, Wells Fargo
Bank, National Association, as Custodian for the PCI Pharma Portfolio Mortgage
Loan, Park Bridge Lender Services LLC, as Operating Advisor for the PCI Pharma
Portfolio Mortgage Loan, Computershare Trust Company, National Association, as
Servicing Function Participant for the Custodian for the PCI Pharma Portfolio
Mortgage Loan, Midland Loan Services, a Division of PNC Bank, National
Association, as Primary Servicer for the Cobb Place Mortgage Loan, Rialto
Capital Advisors, LLC, as Special Servicer for the Cobb Place Mortgage Loan,
Wells Fargo Bank, National Association, as Trustee for the Cobb Place Mortgage
Loan, Wells Fargo Bank, National Association, as Custodian for the Cobb Place
Mortgage Loan, Park Bridge Lender Services LLC, as Operating Advisor for the
Cobb Place Mortgage Loan, Computershare Trust Company, National Association, as
Servicing Function Participant for the Custodian for the Cobb Place Mortgage
Loan, KeyBank National Association, as Primary Servicer for the 650 Madison
Avenue Mortgage Loan, LNR Partners, LLC, as Special Servicer for the 650
Madison Avenue Mortgage Loan prior to September 18, 2023, 3650 REIT Loan
Servicing LLC, as Special Servicer for the 650 Madison Avenue Mortgage Loan on
and after September 18, 2023, Wilmington Trust, National Association, as
Trustee for the 650 Madison Avenue Mortgage Loan, Citibank, N.A., as Custodian
for the 650 Madison Avenue Mortgage Loan, U.S. Bank National Association, as
Servicing Function Participant for the 650 Madison Avenue Mortgage Loan,
KeyBank National Association, as Primary Servicer for the Parkmerced Mortgage
Loan, KeyBank National Association, as Special Servicer for the Parkmerced
Mortgage Loan, Wells Fargo Bank, National Association, as Trustee for the
Parkmerced Mortgage Loan, Wells Fargo Bank, National Association, as Custodian
for the Parkmerced Mortgage Loan, Park Bridge Lender Services LLC, as Operating
Advisor for the Parkmerced Mortgage Loan, Computershare Trust Company, National
Association, as Servicing Function Participant for the Custodian for the
Parkmerced Mortgage Loan, KeyBank National Association, as Primary Servicer for
the 1633 Broadway Mortgage Loan, Situs Holdings, LLC, as Special Servicer for
the 1633 Broadway Mortgage Loan, Wells Fargo Bank, National Association, as
Trustee for the 1633 Broadway Mortgage Loan, Wells Fargo Bank, National
Association, as Custodian for the 1633 Broadway Mortgage Loan, Pentalpha
Surveillance LLC, as Operating Advisor for the 1633 Broadway Mortgage Loan,
Computershare Trust Company, National Association, as Servicing Function
Participant for the Custodian for the 1633 Broadway Mortgage Loan, Midland Loan
Services, a Division of PNC Bank, National Association, as Primary Servicer for
the 560 Mission Street Mortgage Loan, KeyBank National Association, as Special
Servicer for the 560 Mission Street Mortgage Loan prior to July 6, 2023,
Argentic Services Company LP, as Special Servicer for the 560 Mission Street
Mortgage Loan on and after July 6, 2023, Wells Fargo Bank, National
Association, as Trustee for the 560 Mission Street Mortgage Loan, Wells Fargo
Bank, National Association, as Custodian for the 560 Mission Street Mortgage
Loan, Park Bridge Lender Services LLC, as Operating Advisor for the 560 Mission
Street Mortgage Loan, and Computershare Trust Company, National Association, as
Servicing Function Participant for the Custodian for the 560 Mission Street
Mortgage Loan.







Dated: March 19, 2024





/s/
Scott Epperson

Scott
Epperson

Chief Executive
Officer

(senior
officer in charge of securitization of the depositor)