GS Mortgage Securities T
rust 2015-GC30,
P
ARTIES TO THE TRANSACTION
D
A
TES
ADMINISTR
A
TOR
T
ABLE OF CONTENTS
Chicago, IL 60603
Name:
Edward Przybycien
Title:
Account Administrator
Address:
190 S. LaSalle St. 7th Fl.
Phone:
312-332-7535
Email:
Edward.Przybycien@usbank.com
Website:
https://pivot.usbank.com/
Sponsor:
Cantor Commercial Real Estate Lending, L.P.
Sponsor:
Citigroup Global Markets Realty Corp.
Sponsor:
Goldman Sachs Mortgage Company
Sponsor:
MC-Five Mile Commercial Mortgage Finance LLC
Sponsor:
Starwood Mortgage Funding I LLC
Depositor:
GS Mortgage Securities Corporation II
Trustee:
U.S. Bank
Certificate Administrator:
U.S. Bank
Custodian:
U.S. Bank
Master Servicer:
Midland Loan Services, A Division of PNC National Bank
National Association
Special Servicer:
LNR Partners, LLC
Operating Advisor:
BellOak, LLC
Payment
Date:
Prior
Payment:
Next
Payment:
Record Date:
Determination Date:
Mar
10,
2023
Feb
10,
2023
Apr
13,
2023
Feb 28, 2023
Mar 6, 2023
First Payment Date:
Closing Date:
Rated Final Distribution Date:
Jun 12, 2015
May 29, 2015
May 12, 2025
* This report contains, or is based on, information furnished to U.S.
Bank Global Corporate Trust ("U.S. Bank") by one or more third parties (e.g. Servicers, Master Servicer, etc.), and U.S. Bank
has not independently verified information received from any such third party.
Payment Detail
Page
1
Payment Detail (Exchange Certificates) Page
2
Factor Detail
Page
3
Principal Detail Page
4
Interest Detail
Page
5
Reconciliation of Funds
Page
6
Additional Loan Detail Page
7
Historical Loan Modification Report Page
9
Bond/Collateral Realized Loss Reconciliation
Page
10
Historical Delinquency & Liquidation (Stated)
Page
11
Historical Delinquency & Liquidation (Actual) Page
12
Delinquency Summary Report Page
13
REO Additional Detail Page
14
REO Status Report Page
16
Historical Liquidation Loss Loan Detail
Page
17
Interest Adjustment Reconciliation
Page
18
Appraisal Reduction Report Page
19
Loan Level Detail Page
20
Material Breaches and Document Defects
Page
23
Mortgage Loan Characteristics
Page
24
Delinquent Loan Detail
Page
28
Supplemental Information Page
29
Commercial Mortgage Pass-Through Certificates, Series 2015-GC30
March 2023
Revision Date: Mar 21, 2023

Effective
Exchangeable
Pass-Through
Original
Beginning
Principal
Interest
Total
Realized
Ending
Percent
Class
Rate
Outstanding
A-1
1.43900%
A-2
2.72600%
Balance
52,911,000.00
138,851,000.00
Balance
0.00
0.00
Distribution
0.00
0.00
Distribution
0.00
0.00
Distribution
0.00
0.00
Loss
0.00
0.00
Balance
0.00
0.00
A-3
3.11900%
240,000,000.00
226,070,842.15
0.00
587,595.80
587,595.80
0.00
226,070,842.15
A-4
3.38200%
353,977,000.00
353,977,000.00
0.00
997,625.18
997,625.18
0.00
353,977,000.00
A-AB
3.12000%
81,051,000.00
31,553,199.03
1,791,762.56
82,038.32
1,873,800.88
0.00
29,761,436.47
X-A
0.72535%
X-B
0.04400%
A-S
3.77700%
969,430,000.00
73,071,000.00
102,640,000.00
714,241,041.18
73,071,000.00
102,640,000.00
0.00
0.00
0.00
431,729.63
2,679.27
323,059.40
431,729.63
2,679.27
323,059.40
0.00
0.00
0.00
712,449,278.62
73,071,000.00
102,640,000.00
100.00%
73,071,000.00
73,071,000.00
0.00
245,110.32
245,110.32
0.00
73,071,000.00
100.00%
0.00
0.00
0.00
0.00
0.00
0.00
0.00
B
4.02530%
PEZ
(1)
N/A
C
4.06930%
58,198,000.00
58,198,000.00
0.00
197,354.06
197,354.06
0.00
58,198,000.00
100.00%
D 3.38400%
X-D
0.68530%
E
4.06930%
53,989,000.00
53,989,000.00
23,849,000.00
53,989,000.00
53,989,000.00
23,849,000.00
0.00
0.00
0.00
152,248.98
30,832.02
80,873.86
152,248.98
30,832.02
80,873.86
0.00
0.00
0.00
53,989,000.00
53,989,000.00
23,849,000.00
F
4.06930%
20,283,000.00
20,283,000.00
0.00
68,781.27
68,781.27
0.00
20,283,000.00
G
4.06930%
S
(2)
0.00000%
R
0.00000%
39,451,775.00
0.00
0.00
39,451,775.00
0.00
0.00
0.00
0.00
0.00
132,835.43
0.00
0.00
132,835.43
0.00
0.00
0.00
0.00
0.00
39,451,775.00
0.00
0.00
Totals:
1,238,271,775.00
983,082,816.18
1,791,762.56
3,332,763.53
5,124,526.09
0.00
981,291,053.62
(1) The Class PEZ Certificates have an initial maximum certificate principal amount of 233,909,000.00
(2) Class S is a sole beneficiary of Excess Interest
GS Mortgage Securities T
rust 2015-GC30,
Commercial Mortgage Pass-Through Certificates, Series 2015-GC30
March 2023
Page 1 of 29
Revision Date: Mar 21, 2023
PA
YMENT DE
T
AIL

Pass-Through
Original
Beginning
Principal
Interest
Total
Realized
Ending
Percent
Class
Rate
A-S
3.777000%
B
4.025296%
Balance
102,640,000.00
73,071,000.00
Balance
102,640,000.00
73,071,000.00
Distribution
0.00
0.00
Distribution
0.00
0.00
Distribution
0.00
0.00
Loss
0.00
0.00
Balance
102,640,000.00
73,071,000.00
Exchanged
0.00%
0.00%
PEZ
N/A
0.00
0.00
0.00
0.00
0.00
0.00
0.00
C
4.069296%
58,198,000.00
58,198,000.00
0.00
0.00
0.00
0.00
58,198,000.00
0.00%
Totals:
233,909,000.00
233,909,000.00
0.00
0.00
0.00
0.00
233,909,000.00
GS Mortgage Securities T
rust 2015-GC30,
Commercial Mortgage Pass-Through Certificates, Series 2015-GC30
March 2023
Page 2 of 29
Revision Date: Mar 21, 2023
PA
YMENT DE
T
AIL (EXCHANGE CERTIFIC
A
TES)

Beginning
Principal
Interest
Total
Realized
Ending
Class
Cusip
A-1
36250GAL9
A-2
36250GAM7
Balance
0.00000000
0.00000000
Distribution
0.00000000
0.00000000
Distribution
0.00000000
0.00000000
Distribution
0.00000000
0.00000000
Loss
0.00000000
0.00000000
Balance
0.00000000
0.00000000
A-3
36250GAN5
941.96184229
0.00000000
2.44831582
2.44831582
0.00000000
941.96184229
A-4
36250GAP0
1000.00000000
0.00000000
2.81833333
2.81833333
0.00000000
1000.00000000
A-AB
36250GAQ8
389.30055187
22.10660646
1.01218143
23.11878789
0.00000000
367.19394542
X-A
36250GAR6
X-B
36250GAS4
A-S
36250GAT2
736.76391403
1000.00000000
1000.00000000
0.00000000
0.00000000
0.00000000
0.44534379
0.03666667
3.14750000
0.44534379
0.03666667
3.14750000
0.00000000
0.00000000
0.00000000
734.91565004
1000.00000000
1000.00000000
B
36250GAU9
1000.00000000
0.00000000
3.35441307
3.35441307
0.00000000
1000.00000000
PEZ
36250GAV7
0.00000000
0.00000000
0.00000000
0.00000000
0.00000000
0.00000000
C
36250GAW5
1000.00000000
0.00000000
3.39107973
3.39107973
0.00000000
1000.00000000
D
36250GAX3
X-D
36250GAY1
E
36250GAA3
1000.00000000
1000.00000000
1000.00000000
0.00000000
0.00000000
0.00000000
2.82000000
0.57107973
3.39107973
2.82000000
0.57107973
3.39107973
0.00000000
0.00000000
0.00000000
1000.00000000
1000.00000000
1000.00000000
F
36250GAC9
1000.00000000
0.00000000
3.39107973
3.39107973
0.00000000
1000.00000000
G 36250GAE5
S 36250GAG0
R
36250GAJ4
1000.00000000
0.00000000
0.00000000
0.00000000
0.00000000
0.00000000
3.36703300
0.00000000
0.00000000
3.36703300
0.00000000
0.00000000
0.00000000
0.00000000
0.00000000
1000.00000000
0.00000000
0.00000000
GS Mortgage Securities T
rust 2015-GC30,
Commercial Mortgage Pass-Through Certificates, Series 2015-GC30
March 2023
Page 3 of 29
Revision Date: Mar 21, 2023
F
ACTOR DE
T
AIL

Operating
Cumulative
Beginning
Scheduled
Unscheduled
Realized
Advisor
Ending
Realized
Class
A-1
A-2
Balance
0.00
0.00
Principal
0.00
0.00
Principal
0.00
0.00
Loss
0.00
0.00
Expenses
0.00
0.00
Balance
0.00
0.00
Loss
0.00
0.00
A-3
226,070,842.15
0.00
0.00
0.00
0.00
226,070,842.15
0.00
A-4
353,977,000.00
0.00
0.00
0.00
0.00
353,977,000.00
0.00
A-AB
31,553,199.03
1,791,762.56
0.00
0.00
0.00
29,761,436.47
0.00
A-S
B
PEZ
102,640,000.00
73,071,000.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
102,640,000.00
73,071,000.00
0.00
0.00
0.00
0.00
C
58,198,000.00
0.00
0.00
0.00
0.00
58,198,000.00
0.00
D
53,989,000.00
0.00
0.00
0.00
0.00
53,989,000.00
0.00
E
23,849,000.00
0.00
0.00
0.00
0.00
23,849,000.00
0.00
F
G
20,283,000.00
39,451,775.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
20,283,000.00
39,451,775.00
0.00
0.00
Totals:
983,082,816.18
1,791,762.56
0.00
0.00
0.00
981,291,053.62
0.00
GS Mortgage Securities T
rust 2015-GC30,
Commercial Mortgage Pass-Through Certificates, Series 2015-GC30
March 2023
Page 4 of 29
Revision Date: Mar 21, 2023
PRINCI
P
AL DE
T
AIL

Accrued
Net Prepay
Current
Yield
Total Interest
Cumulative
Certificate
Interest
Interest
Interest
Maintenance
Distribution
Unpaid Interest
Class
A-1
A-2
Interest
0.00
0.00
Shortfall
0.00
0.00
Adjustment
0.00
0.00
Shortfalls
0.00
0.00
Charges
0.00
0.00
Amount
0.00
0.00
Shortfall
0.00
0.00
A-3
587,595.80
0.00
0.00
0.00
0.00
587,595.80
0.00
A-4
997,625.18
0.00
0.00
0.00
0.00
997,625.18
0.00
A-AB
82,038.32
0.00
0.00
0.00
0.00
82,038.32
0.00
X-A
X-B
A-S
431,729.63
2,679.27
323,059.40
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
431,729.63
2,679.27
323,059.40
0.00
0.00
0.00
B
245,110.32
0.00
0.00
0.00
0.00
245,110.32
0.00
PEZ
0.00
0.00
0.00
0.00
0.00
0.00
0.00
C
197,354.06
0.00
0.00
0.00
0.00
197,354.06
0.00
D
X-D
E
152,248.98
30,832.02
80,873.86
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
152,248.98
30,832.02
80,873.86
0.00
0.00
0.00
F
68,781.27
0.00
0.00
0.00
0.00
68,781.27
0.00
G
S
R
133,784.11
0.00
0.00
0.00
0.00
0.00
-948.69
0.00
0.00
948.69
0.00
0.00
0.00
0.00
0.00
132,835.43
0.00
0.00
88,109.44
0.00
0.00
Totals:
3,333,712.21
0.00
-948.69
948.69
0.00
3,332,763.53
88,109.44
GS Mortgage Securities T
rust 2015-GC30,
Commercial Mortgage Pass-Through Certificates, Series 2015-GC30
March 2023
Page 5 of 29
Revision Date: Mar 21, 2023
INTEREST DE
T
AIL

Interest
Fees
Scheduled Interest
3,123,348.22
Master Servicing Fee
8,853.59
Interest Adjustments
0.00
Trustee/Certificate Administrator Fees
2,064.43
Deferred Interest
0.00
CREFC Intellectual Property
Royalty License Fee
382.31
Net Prepayment Shortfall
0.00
Operating Advisor Fee
1,070.47
Net Prepayment Interest Excess
0.00
Special Servicing Fee
662.25
Interest Reserve (Deposit)/Withdrawal
Interest Collections
222,734.76
3,346,082.98
Workout Fee
Liquidation Fee
Special Serv Fee plus Adj.
401.40
0.00
0.00
Principal
Miscellaneous Fee
0.00
Scheduled Principal
1,791,762.58
Unscheduled Principal
(0.02)
Fee Distributions
13,434.45
Principal Adjustments
Principal Collections
0.00
1,791,762.56
Additional Trust Fund Expenses
Reimbursed for Interest on Advances
(115.00)
Net ASER Amount
0.00
Other
Yield Maintenance
0.00
Non-Recoverable Advances
Other Expenses or Shortfalls
Additional Trust Fund Expenses
0.00
0.00
(115.00)
Prepayment Premium
Other Collections
0.00
0.00
Payments to Certificateholders
Interest Distribution
3,332,763.53
Principal Distribution
Yield Maintenance
1,791,762.56
0.00
Prepayment Premium
0.00
Payments to Certificateholders
5,124,526.09
Total Collections
5,137,845.54
Total Distribution
5,137,845.54
Funds Collection
Funds Distribution
GS Mortgage Securities T
rust 2015-GC30,
Commercial Mortgage Pass-Through Certificates, Series 2015-GC30
March 2023
Page 6 of 29
Revision Date: Mar 21, 2023
RECONCILI
A
TION OF FUNDS

Mortgage Loan Stated Principal Balance
P&I Advances:
Beginning Principal Balance
983,082,816.65
Total
Ending Principal Balance
981,291,054.09
P & I Advances
Not Provided
% of Cut-Off Date Principal Balance
79.25%
Miscellaneous Advances
Not Provided
Outstanding P & I Advances
234,433.75
Ending Loan Count
79
Disclosable Special Servicer Fees
Commission
0.00
Brokerage Fee
0.00
Weighted Average Remaining Term to Maturity
25
Rebate
0.00
Shared Fee
0.00
Other
0.00
Weighted Average Mortgage Rate
3.8125149%
Excess Liquidation Proceeds Account
Beg Balance
(Withdraw)/Dep
End Balance
Controlling Class:
G
0.00
0.00
0.00
Controlling Class Representative:
DoubleLine Capital L.P.
Specially Serviced Loans that are not Delinquent
Count
Balance
0
0.00
Aggregate Realized Loss in Related Collection Period
0.00
Agg Add’l Trust Expenses in Related Collection Period
0.00
ADDITIONAL LOAN DE
T
AIL
GS Mortgage Securities T
rust 2015-GC30,
Commercial Mortgage Pass-Through Certificates, Series 2015-GC30
March 2023
Page 7 of 29
Revision Date: Mar 21, 2023

Stated Principal
Amount Of Any
Portion Included
Count
Balance
Loan ID
Liq Proceeds
in Avail Funds
Totals:
Totals:
0.00
0.00
Mortgage Loan Repurchased, Substituted For Or Otherwise
Liquidated Or Disposed During Related Collection Period
Mortgage Loans As to Which Related Mortgator
Is Subject Or Is Expected To Bankruptcy Proceedings
GS Mortgage Securities T
rust 2015-GC30,
Commercial Mortgage Pass-Through Certificates, Series 2015-GC30
March 2023
Page 8 of 29
Revision Date: Mar 21, 2023
ADDITIONAL LOAN DE
T
AIL

HISTORICAL LOAN MODIFIC
A
TION REPORT
GS Mortgage Securities T
rust 2015-GC30,
Commercial Mortgage Pass-Through Certificates, Series 2015-GC30
March 2023
Ending
Scheduled
Loan ID
Balance
Ending
Unpaid
Balance
Comments
Page 9 of 29
Revision Date: Mar 21, 2023

GS Mortgage Securities T
rust 2015-GC30,
Beginning
Balance of the
Loan at
Loan ID
Period
Liquidation
Current
Realized Loss
Applied to
Certificates*
Recoveries of
Realized
Losses paid
as Cash
(Recoveries) /
Loss to
Certificate
Interest
Aggregate
Realized Loss
on Loans
Prior Realized
Loss Applied to
Certificates
A
Amounts
Covered by
Overcollateraliz
ation and other
Credit Support
B
Interest
(Shortages) /
Excesses
applied to
Realized Loss
C
Modification
Adjustments /
Appraisal
Reduction
Adjustment
D
Additional
(Recoveries) /
Expenses
applied to
Realized Loss
E
Loan Count:
Totals:
Prior Realized Loss Applied to Certificates
Adjustments that are based on principal haircut or future interest foregone due to modification
Description of Fields
A
B
C
D
E
*In the Initial Period the Current Realized Loss Applied to Certificates will equal Aggregate Realized Loss on Loans
- B - C - D
+ E instead of A - C - D +
E
Reduction to Realized Loss applied to bonds (could represent OC, insurance policies, reserve accounts, etc)
Amounts classified by the Master as interest adjustments from general collections on a loan with a Realized Loss
Realized Loss Adjustments, Supplemental Recoveries or Expenses on a previously liquidated loan
Page 10 of 29
Commercial Mortgage Pass-Through Certificates, Series 2015-GC30
March 2023
Revision Date: Mar 21, 2023
BOND/COLL
A
TERAL REALIZED LOSS RECONCILI
A
TION

GS Mortgage Securities T
rust 2015-GC30,
30 Days Delinq
(1)
60 Days Delinq
(1)
90+ Days Delinq
(1)
Bankruptcy
Foreclosure
REO
Prepayments/Liquidation
Month
Count
Balance
%
(2)
Count
Balance
%
(2)
Count
Balance
%
(2)
Count
Balance
%
(2)
Count
Balance
%
(2)
Count
Balance
%
(2)
Count
Balance
%
(2)
Mar 2023
0
0.00
0.0%
0
0.00
0.0%
1
3,397,609.48
0.3%
0
0.00
0.0%
1
15,747,225.38
1.6%
0
0.00
0.0%
0
0.00
0.0%
Feb 2023
0
0.00
0.0%
0
0.00
0.0%
1
3,405,844.29
0.3%
0
0.00
0.0%
1
15,789,537.52
1.6%
0
0.00
0.0%
0
0.00
0.0%
Jan 2023
0
0.00
0.0%
0
0.00
0.0%
1
3,412,789.49
0.3%
0
0.00
0.0%
1
15,826,190.76
1.6%
0
0.00
0.0%
0
0.00
0.0%
Dec 2022
0
0.00
0.0%
0
0.00
0.0%
2
10,287,848.29
1.0%
0
0.00
0.0%
1
15,862,71
1.92
1.6%
0
0.00
0.0%
0
0.00
0.0%
Nov 2022
1
1
1,695,603.25
1.2%
0
0.00
0.0%
2
10,309,893.26
1.0%
0
0.00
0.0%
1
15,900,949.90
1.6%
0
0.00
0.0%
0
0.00
0.0%
Oct 2022
0
0.00
0.0%
0
0.00
0.0%
2
10,330,588.57
1.0%
0
0.00
0.0%
1
15,937,201.65
1.6%
0
0.00
0.0%
0
0.00
0.0%
Sep 2022
0
0.00
0.0%
1
6,91
1,327.38
0.7%
1
3,441,148.71
0.3%
0
0.00
0.0%
1
15,975,179.82
1.6%
0
0.00
0.0%
0
0.00
0.0%
Aug 2022
1
6,925,050.19
0.7%
0
0.00
0.0%
1
3,447,959.14
0.3%
0
0.00
0.0%
1
16,01
1,164.08
1.6%
0
0.00
0.0%
0
0.00
0.0%
Jul 2022
0
0.00
0.0%
2
10,393,464.42
1.0%
0
0.00
0.0%
0
0.00
0.0%
1
16,047,018.66
1.6%
0
0.00
0.0%
0
0.00
0.0%
Jun 2022
2
10,415,120.34
1.0%
0
0.00
0.0%
1
17,062,210.90
1.7%
0
0.00
0.0%
0
0.00
0.0%
0
0.00
0.0%
0
0.00
0.0%
May 2022
0
0.00
0.0%
0
0.00
0.0%
1
17,094,277.89
1.7%
0
0.00
0.0%
0
0.00
0.0%
0
0.00
0.0%
0
0.00
0.0%
Apr 2022
1
6,981,123.61
0.7%
0
0.00
0.0%
1
17,128,220.42
1.7%
0
0.00
0.0%
0
0.00
0.0%
0
0.00
0.0%
0
0.00
0.0%
Mar 2022
0
0.00
0.0%
1
17,160,049.54
1.7%
0
0.00
0.0%
0
0.00
0.0%
0
0.00
0.0%
0
0.00
0.0%
0
0.00
0.0%
Feb 2022
1
17,197,761.49
1.7%
0
0.00
0.0%
0
0.00
0.0%
0
0.00
0.0%
0
0.00
0.0%
0
0.00
0.0%
2
6,065,373.03
0.6%
Jan 2022
0
0.00
0.0%
0
0.00
0.0%
1
3,497,035.60
0.3%
0
0.00
0.0%
1
3,587,817.18
0.4%
0
0.00
0.0%
0
0.00
0.0%
(2) Percentage in relation to Ending Scheduled Balance
(1) Exclusive of loans in Bankruptcy, Foreclosure and REO
Page 11 of 29
Commercial Mortgage Pass-Through Certificates, Series 2015-GC30
March 2023
Revision Date: Mar 21, 2023
HISTORICAL DELINQUENCY & LIQUID
A
TION SUMMARY (S
TA
TED BALANCE)

GS Mortgage Securities T
rust 2015-GC30,
30 Days Delinq
(1)
60 Days Delinq
(1)
90+ Days Delinq
(1)
Bankruptcy
Foreclosure
REO
Prepayments/Liquidation
Month
Count
Balance
%
(2)
Count
Balance
%
(2)
Count
Balance
%
(2)
Count
Balance
%
(2)
Count
Balance
%
(2)
Count
Balance
%
(2)
Count
Balance
%
(2)
Mar 2023
0
0.00
0.0%
0
0.00
0.0%
1
3,475,792.94
0.4%
0
0.00
0.0%
1
15,747,225.38
1.6%
0
0.00
0.0%
0.00
0.0%
0
Feb 2023
0
0.00
0.0%
0
0.00
0.0%
1
3,475,792.94
0.4%
0
0.00
0.0%
1
15,789,537.52
1.6%
0
0.00
0.0%
0.00
0.0%
0
Jan 2023
0
0.00
0.0%
0
0.00
0.0%
1
3,475,792.94
0.4%
0
0.00
0.0%
1
15,826,190.76
1.6%
0
0.00
0.0%
0.00
0.0%
0
Dec 2022
0
0.00
0.0%
0
0.00
0.0%
2
10,428,984.87
1.1%
0
0.00
0.0%
1
15,862,71
1.92
1.6%
0
0.00
0.0%
0.00
0.0%
0
Nov 2022
1
1
1,716,700.38
1.2%
0
0.00
0.0%
2
10,428,984.87
1.1%
0
0.00
0.0%
1
15,900,949.90
1.6%
0
0.00
0.0%
0.00
0.0%
0
Oct 2022
0
0.00
0.0%
0
0.00
0.0%
2
10,428,984.87
1.1%
0
0.00
0.0%
1
15,937,201.65
1.6%
0
0.00
0.0%
0.00
0.0%
0
Sep 2022
0
0.00
0.0%
1
6,953,191.93
0.7%
1
3,475,792.94
0.4%
0
0.00
0.0%
1
15,975,179.82
1.6%
0
0.00
0.0%
0.00
0.0%
0
Aug 2022
1
6,953,191.93
0.7%
0
0.00
0.0%
1
3,475,792.94
0.4%
0
0.00
0.0%
1
16,047,018.66
1.6%
0
0.00
0.0%
0.00
0.0%
0
Jul 2022
0
0.00
0.0%
2
10,456,916.55
1.1%
0
0.00
0.0%
0
0.00
0.0%
1
16,047,018.66
1.6%
0
0.00
0.0%
0.00
0.0%
0
Jun 2022
2
10,456,916.55
1.0%
0
0.00
0.0%
1
17,260,804.73
1.7%
0
0.00
0.0%
0
0.00
0.0%
0
0.00
0.0%
0.00
0.0%
0
May 2022
0
0.00
0.0%
0
0.00
0.0%
1
17,260,804.73
1.7%
0
0.00
0.0%
0
0.00
0.0%
0
0.00
0.0%
0.00
0.0%
0
Apr 2022
1
7,023,91
1.52
0.7%
0
0.00
0.0%
1
17,260,804.73
1.7%
0
0.00
0.0%
0
0.00
0.0%
0
0.00
0.0%
0.00
0.0%
0
Mar 2022
0
0.00
0.0%
1
17,260,804.73
1.7%
0
0.00
0.0%
0
0.00
0.0%
0
0.00
0.0%
0
0.00
0.0%
0.00
0.0%
0
Feb 2022
1
17,260,804.73
1.7%
0
0.00
0.0%
0
0.00
0.0%
0
0.00
0.0%
0
0.00
0.0%
0
6,160,802.12
0.6%
0.00
0.0%
2
Jan 2022
0
0.00
0.0%
0
0.00
0.0%
1
3,537,098.71
0.4%
0
0.00
0.0%
1
3,683,246.27
0.4%
0
0.00
0.0%
0.00
0.0%
0
(1) Exclusive of loans in Bankruptcy, Foreclosure and REO
(2) Percentage in relation to Ending Scheduled Balance
Page 12 of 29
Commercial Mortgage Pass-Through Certificates, Series 2015-GC30
March 2023
Revision Date: Mar 21, 2023
HISTORICAL DELINQUENCY & LIQUID
A
TION SUMMARY (ACTUAL BALANCE)

GS Mortgage Securities T
rust 2015-GC30,
Commercial Mortgage Pass-Through Certificates, Series 2015-GC30
March 2023
Current
77
30 - 59 days
0
60 - 89 days
0
90 - 120 days
0
121 + days
1
Bankruptcy
Foreclosure
REO
TOTAL
Delinquent
Loan Count
Sched Bal
Percentage*
Actual Bal
Loan Count
Sched Bal
Percentage*
Actual Bal
Loan Count
Sched Bal
Percentage*
Actual Bal
Loan Count
Sched Bal
Percentage*
Actual Bal
Loan Count
Sched Bal
Percentage*
Actual Bal
962,146,219.23
0.00
98.05% 0.00%
962,155,014.63
0.00
0
0
0.00
0.00
0.00% 0.00%
0.00
0.00
1
0
15,747,225.38
0.00
1.60% 0.00%
15,747,225.38
0.00
0
0
0.00
0.00
0.00% 0.00%
0.00
0.00
78
0
977,893,444.61
0.00
99.65%
0.00%
977,902,240.01
0.00
0.00
0.00
0.00% 0.00%
0.00
0.00
0
0
0.00
0.00
0.00% 0.00%
0.00
0.00
0
0
0.00
0.00
0.00% 0.00%
0.00
0.00
0
0
0.00
0.00
0.00% 0.00%
0.00
0.00
0
0
0.00
0.00
0.00%
0.00%
0.00
0.00
3,397,609.48
0.35%
3,475,792.94
0
0.00
0.00%
0.00
0
0.00
0.00%
0.00
0
0.00
0.00%
0.00
1
3,397,609.48
0.35%
3,475,792.94
965,543,828.71
98.40%
965,630,807.57
0
0.00
0.00%
0.00
1
15,747,225.38
1.60%
15,747,225.38
0
0.00
0.00%
0.00
79
981,291,054.09
100.00%
981,378,032.95
Group 1
Current
TOTAL
121
+
days
78
Current
99.7%
30
-
59
days
0.0%
60
-
89
days
0.0%
90
-
120
days
0.0%
121
+
days
0.3%
Total:
100.0%
* Percentages are based on scheduled balance as a percent of total pool scheduled balance.
Page 13 of 29
Revision Date: Mar 21, 2023
Delinquency Summary Report

Stated Principal
Unpaid Principal
Most Recent
Date Appraisal
Loan ID
Balance
Balance
Appraisal Value
Performed
Totals:
Mortgage Property That Became REO Property During Related Prepayment Period
GS Mortgage Securities T
rust 2015-GC30,
Commercial Mortgage Pass-Through Certificates, Series 2015-GC30
March 2023
Page 14 of 29
Revision Date: Mar 21, 2023
REO ADDITIONAL DE
T
AIL

Liq Proceeds
and Other
Loan ID
Amounts Rec’d
Portion of Liq
Proceeds in
Available Funds
Balance of
of Excess Liq
Proceeds Acct
Totals:
REO Property Sold Or Disposed During Related Prepayment Period
GS Mortgage Securities T
rust 2015-GC30,
Commercial Mortgage Pass-Through Certificates, Series 2015-GC30
March 2023
Page 15 of 29
Revision Date: Mar 21, 2023
REO ADDITIONAL DE
T
AIL

GS Mortgage Securities T
rust 2015-GC30,
Date Asset
Expected to
be Resolved
or Foreclosed
Ending
Loan ID
State
City
Property Type
Book Value
Scheduled Loan
REO Date
REO Revenue
and Other
Amounts
Type *
Appraisal
Total Exposure
Appraisal Value
Date
Count:
Totals:
(*) Legend: (1) Partial Liq’n (Curtailment), (2) Payoff Prior T
o Maturity, (3) Disposition / Liquidation, (4) Repurchase/ Substitution, (5) Full Payof
f
At Maturity, (6) DPO, (7) Liquidated, (8) Payoff w/ penalty, (9)
Payoff w/ yield Maintenance, (10) Curtailment w/ Penalty, (11) Curtailment w/ Yield Maintenance
Page 16 of 29
Commercial Mortgage Pass-Through Certificates, Series 2015-GC30
March 2023
Revision Date: Mar 21, 2023
REO S
TA
TUS REPORT

GS Mortgage Securities T
rust 2015-GC30,
Current Beginning
Scheduled Balance
Net Proceeds Received
Most Recent Value **
on Liquidation
Net Proceeds Available
Liquidation Expense
for Distribution
Realized Loss to Trust
Liquidation /
Prepayment
Code *
Liquidation
Loan ID
Month
Count:
Totals:
* Liquidation / Prepayment Code:
1 - Partial Liq’n (Curtailment); 2 -
Payoff Prior
T
o Maturity; 3 - Disposition / Liquidation; 4 - Repurchase/ Substitution; 5 -
Full Payoff At Maturity; 6 - DPO; 7 - Liquidated; 8 -
Payoff w/ penalty; 9 - Payoff w/ yield Maintenance; 10 - Curtailment w/ Penalty;
1
1 - Curtailment w/ Yield Maintenance
** Reported as of liquidation period.
If not provided by the servicer,
Most Recent Value is as of cutoff
.
Page 17 of 29
Commercial Mortgage Pass-Through Certificates, Series 2015-GC30
March 2023
Revision Date: Mar 21, 2023
HISTORICAL LIQUID
A
TION LOSS LOAN DE
T
AIL

GS Mortgage Securities T
rust 2015-GC30,
Special
Servicing Fee
Amount plus
Adjustments
Liquidation
Fee Amount
Workout Fee
Amount
Most Recent
Net ASER
Amount
Prepayment
Interest
(Excess)/
Shortfall *
Non-
Recoverable
(Scheduled
Interest Not
Advanced)**
Reimbursed
Interest on
Advances
Modified
Interest Rate
Reduction/
(Excess)
Current Month
Outstanding
Other
Shortfalls/
(Refunds)
Current Ending
Scheduled
Loan ID
Balance
Reimbursement of
Advances to Servicer
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
401.40
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
-142.38
0.00
0.00
6.83
0.00
0.00
0.00
0.00
0.00
34.64
0.00
0.00 -14.09
0.00
0.00
0.00
0.00
9,264,234.72
0.00
6,790,894.08
0.00
6,823,635.49
0.00
5,750,000.00
0.00
4,958,780.49
0.00
3,397,609.48
662.25
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
32
39
40
57
58
76
Count:
6
Totals:
36,985,154.26
662.25
0.00
401.40
0.00
0.00
0.00
-1
15.00
0.00
0.00
0.00
0.00
Total Interest Shortfall hitting the Trust:
948.65
*
T
otal shortfall may not match impact to bonds due to, but not limited to, the net effect of PPIE and Master Servicing fees received as per the governing documents.
**In some cases, the Servicer does not withhold their Servicing Fees on Non-Recoverable loans.
Page 18 of 29
Commercial Mortgage Pass-Through Certificates, Series 2015-GC30
March 2023
Revision Date: Mar 21, 2023
INTEREST ADJUSTMENT RECONCILI
A
TION

GS Mortgage Securities T
rust 2015-GC30,
Commercial Mortgage Pass-Through Certificates, Series 2015-GC30
March 2023
Paid Through
Loan ID
Property Name
Date
ARA (Appraisal
Reduction Amount)
ARA Date
Most Recent
Most Recent Value
Valuation Date
Most Recent Net
ASER Amount
Cumulative ASER
Amount
Count:
Totals:
Page 19 of 29
Revision Date: Mar 21, 2023
APPRAISAL REDUCTION REPORT

GS Mortgage Securities T
rust 2015-GC30,
Property
Transfer
Maturity
Neg
End Schedule
Note
Sched
Prepay
Prepay
Paid
Prepay
Loan
Interest
Yield Maint
PFY
Operating
Loan ID
Type
Date
Stat Date
Am
Balance
Rate P&I Adj
Date
Thru
Premium
Status **
Payment Charges
DSCR
Stmnt
1
Mixed Use
2
Office
3
Lodging
TX
05/06/25
N
WA 04/04/25
N
TX
05/06/25
N
627,969.37
-0.02
373,913.17
0.00
389,439.87
0.00
03/06/23
03/06/23
03/06/23
0.00
0
352,443.75
0.00
0
373,913.17
0.00
0
214,563.96
1
10,314,336.40 4.098
123,000,000.00 3.909
75,147,431.20
3.663
0.00
2.07
0.00
0.00
0.00
1.03
02/28/22
12/31/21
12/31/21
4
Lodging
XX
04/06/20
02/06/20
4A
Lodging
XX
04/06/20
12/05/19
5
Office
12/31/21
12/31/21
6
Multifamily
7
Multifamily
8
Lodging
9
Mixed Use
10
Retail
MO
P
A
OH
04/23/20
CA
CA
OH
05/06/25
N
10/04/24
N
04/06/45
N
03/06/25
N
04/06/25
N
05/06/25
N
240,606.94
0.00
167,200.98
0.00
91,121.45
0.00
139,503.26
0.00
76,222.22
0.00
1
17,059.33
0.00
03/06/23
03/06/23
03/06/23
03/06/23
03/06/23
03/06/23
0.00
0
137,996.1
1
0.00
0
108,412.51
0.00
0 91,121.45
0.00
0 84,227.99
0.00
0 76,222.22
0.00
0
63,070.55
45,274,260.47
3.910
31,366,645.33
4.436
28,095,000.00
4.170
23,178,609.34
4.661
25,000,000.00
3.920
21,063,384.09
3.840
0.00
1.72
0.00
1.28
0.00
0.00
0.00
1.73
0.00
2.02
0.00
2.02
12/31/21
12/31/21
12/31/21
1
1
Mixed Use
CA
04/06/20
04/06/20
12/31/21
12/31/21
12/31/21
12/31/21
12/31/21
09/30/21
12/31/21
12/31/21
12/31/21
12/31/21
12/31/21
12/31/21
12/31/21
12
Retail
13
Lodging
14
Retail
15
Lodging
16
Retail
17
Multifamily
18
Multifamily
19
Multifamily
20
Office
21
Multifamily
22
Mixed Use
23
Self Storage
24
Multifamily
25
Multifamily
26
Retail
27
Retail
28
Multifamily
29
Lodging
30
Multifamily
31
Retail
32
Multifamily
07/06/20
NY
10/08/20
NY
NY
FL
CA
GA
XX
DC
NJ
MI
CA
CA
OK
OH
FL
XX
OH
LA
MI
XX
TX
04/06/25
N
05/06/25
N
05/06/25
N
04/04/25
N
04/06/25
N
04/06/25
N
04/06/25
N
05/06/25
N
05/06/25
N
04/06/25
N
04/04/25
N
05/06/25
N
04/06/25
N
04/06/45
N
05/06/25
N
05/06/25
N
05/06/25
N
03/06/25
N
04/06/25
N
03/06/25
N
05/06/25
N
97,220.67
0.00
93,891.30
0.00
87,289.25
0.00
85,246.10
0.00
50,306.67
0.00
76,132.08
0.00
73,843.68
0.00
66,835.53
0.00
66,549.04
0.00
65,196.43
0.00
63,876.10
0.00
37,310.00
0.00
62,818.53
0.00
58,752.78
0.00
60,233.16
0.00
60,173.40
0.00
53,923.48
0.00
53,377.77
0.00
52,896.89
0.00
56,816.77
0.00
53,190.43
0.00
03/06/23
03/06/23
03/06/23
03/06/23
03/06/23
03/06/23
03/06/23
03/06/23
03/06/23
03/06/23
03/06/23
03/06/23
03/06/23
03/06/23
03/06/23
03/06/23
03/06/23
03/06/23
03/06/23
03/06/23
03/06/23
0.00
0
61,417.14
0.00
0
51,579.16
0.00
0
55,090.14
0.00
0
46,527.82
0.00
0
50,306.67
0.00
0
46,268.72
0.00
0
44,436.31
0.00
0
42,456.49
0.00
0
41,413.67
0.00
0
41,293.75
0.00
0
38,354.68
0.00
0
37,310.00
0.00
0
38,513.70
0.00
0
36,969.90
0.00
0
37,910.66
0.00
0
28,140.41
0.00
0
33,761.91
0.00
0
31,188.70
0.00
0
32,365.56
0.00
0
34,470.17
0.00
0
30,265.82
18,991,883.37 4.150
15,747,225.38 4.200
17,1
17,965.99 4.130
15,169,490.01 3.934
16,500,000.00 3.920
15,341,803.83 3.870
13,394,557.43 4.256
13,034,691.89 4.180
12,271,897.06 4.330
12,707,983.32 4.170
1
1,604,939.60 4.240
13,000,000.00 3.690
1
1,681,986.45 4.230
1
1,515,286.28 4.120
1
1,005,343.37 4.420
9,013,098.08 4.000
10,645,237.47 4.070
9,854,599.26 4.060
10,228,941.21 4.060
9,407,182.80 4.700
9,264,234.72
4.190
0.00
1.23
0.00
-0.01
0.00
1.36
0.00
4.53
0.00
1.61
0.00
0.00
0.00
2.47
0.00
0.41
0.00
1.34
0.00
0.00
0.00
1.74
0.00
4.13
0.00
0.00
0.00
0.00
0.00
1.95
0.00
1.67
0.00
0.00
0.00
4.16
0.00
2.13
0.00
0.89
0.00
1.51
12/31/21
33
Retail
TN
04/06/20
03/06/20
12/31/21
12/31/21
12/31/21
12/31/21
34
Multifamily
35 Self Storage
36 Self Storage
37
Multifamily
38
Retail
39
Industrial
40
Retail
TX
GA
GA
TX
IL
TX
10/13/22
OH
05/06/25
N
03/06/25
N
03/06/25
N
05/06/25
N
05/06/25
N
05/06/25
N
04/06/25
N
51,285.54
0.00
29,939.42
0.00
18,961.63
0.00
48,022.28
0.00
39,990.59
0.00
38,702.29
0.00
40,139.95
0.00
03/06/23
03/06/23
03/06/23
03/06/23
03/06/23
03/06/23
03/06/23
0.00
0
29,181.92
0.00
0
17,618.34
0.00
0
1
1,107.19
0.00
0
28,447.12
0.00
0
24,022.24
0.00
0
21,762.38
0.00
0
23,568.31
8,932,457.55
4.190
5,171,237.67
4.370
3,260,033.64
4.370
8,144,458.83
4.480
7,288,214.80
4.229
6,790,894.08
4.
1
10
6,823,635.49
4.430
0.00
1.54
0.00
2.29
0.00
0.00
0.00
2.05
0.00
2.23
0.00
1.93
0.00
0.00
Page 20 of 29
Commercial Mortgage Pass-Through Certificates, Series 2015-GC30
March 2023
Revision Date: Mar 21, 2023
LOAN LEVEL DE
T
AIL

GS Mortgage Securities T
rust 2015-GC30,
Property
Transfer
Maturity
Neg
End Schedule
Note
Sched
Prepay
Prepay
Paid
Prepay
Loan
Interest
Yield Maint
PFY
Operating
Loan ID
Type
Date
Stat Date
Am
Balance
Rate P&I Adj
Date
Thru
Premium
Status **
Payment Charges
DSCR
Stmnt
12/31/21
12/31/21
12/31/21
12/31/21
12/31/21
12/31/21
12/31/21
12/31/21
12/31/21
12/31/21
12/31/21
12/31/21
12/31/21
12/31/21
63
Self Storage
64
Retail
65
Self Storage
66
Retail
67
Lodging
68
Retail
69
Industrial
70
Multifamily
41
Retail
CA
05/06/25
N
7,485,991.77
3.752
36,595.10
0.00
03/06/23
0.00
0
21,888.70
0.00
2.16
12/31/21
42
Multifamily
TX
04/06/20
10/06/19
43
Multifamily
FL
04/06/25
N
6,563,843.40
4.410
38,541.42
0.00
03/06/23
0.00
0
22,568.77
0.00
0.00
44
Multifamily OH
05/06/25
08/06/19
12/31/21
12/31/21
45
Office 46
Retail 47
Retail 48
Retail 49
Multifamily
50
Mobile Home
51
Retail
52
Office
53
Retail
54
Retail
55
Multifamily
56
Multifamily
57
Retail
58
Retail
59
Retail
60
Self Storage
61
Retail
62
Retail
V
A
KY
CA
V
A
V
A
P
A
CO
P
A
02/12/18
SC
CA
CO
SC
AL
SC
SC
MI
TX
GA
MI
NC
MI
AZ
FL
NC
MI
MI
04/06/25
N
04/06/25
N
03/06/25
N
05/06/25
N
04/06/25
N
05/06/25
N
05/06/25
N
03/06/25
N
05/06/25
N
04/06/25
N
05/06/25
N
04/06/25
N
04/06/25
N
05/06/25
N
05/06/25
N
03/06/25
N
04/06/25
N
04/06/25
N
03/06/25
N
05/06/25
N
03/06/25
N
05/06/25
N
04/04/25
N
04/06/25
N
03/06/26
N
05/06/25
N
37,243.18
0.00
36,676.29
0.00
34,125.31
0.00
33,285.38
0.00
32,839.74
0.00
32,469.59
0.00
33,516.39
0.00
32,035.10
0.00
30,665.80
0.00
29,727.53
0.00
28,508.70
0.00
30,603.18
0.00
17,683.17
0.00
27,425.05
0.00
17,094.84
0.00
27,440.14
0.00
26,908.88
0.00
26,318.78
0.00
25,51
1.52
0.00
24,074.21
0.00
24,535.00
0.00
23,870.76
0.00
25,491.97
0.00
24,655.57
0.00
46,165.19
0.00
23,285.38
0.00
03/06/23
03/06/23
03/06/23
03/06/23
03/06/23
03/06/23
03/06/23
03/06/23
03/06/23
03/06/23
03/06/23
03/06/23
03/06/23
03/06/23
03/06/23
03/06/23
03/06/23
03/06/23
03/06/23
03/06/23
03/06/23
03/06/23
03/06/23
03/06/23
03/06/23
03/06/23
0.00
0
21,567.38
0.00
0
20,852.21
0.00
0
20,047.24
0.00
0
17,963.68
0.00
0
19,766.72
0.00
0
18,297.46
0.00
0
22,500.69
0.00
0
20,507.38
0.00
0
18,830.87
0.00
0
18,418.28
0.00
0
16,006.37
0.00
0
18,604.60
0.00
0
17,683.17
0.00
0
15,713.1
1
0.00
0
17,094.84
0.00
0
17,391.70
0.00
0
15,646.64
0.00
0
16,178.83
0.00
0
16,169.33
0.00
0
14,057.51
0.00
0
15,550.41
0.00
0
13,197.88
0.00
0
15,21
1.90
0.00
0
14,159.89
0.00
0 5,721.41
0.00
0
13,646.94
6,389,843.07
4.329
6,367,504.52
4.200
6,527,805.40
3.940
5,983,682.19
3.850
6,192,360.38
4.096
5,689,623.84
4.125
6,210,373.60
4.650
6,169,840.30
4.266
5,714,541.38
4.228
5,483,039.96
4.310
5,006,916.39
4.100
5,076,323.40
4.701
5,750,000.00
3.954
4,958,780.49
4.065
5,640,000.00
3.897
5,330,471.46
4.187
4,604,340.74
4.359
4,884,295.18
4.250
4,955,820.86
4.187
4,475,946.24
4.029
4,766,124.43
4.187
4,231,503.59
4.000
4,285,384.57
4.553
4,253,103.59
4.270
1,546,975.76
4.634
3,978,103.55
4.400
0.00
2.23
0.00
2.13
0.00
0.00
0.00
2.90
0.00
1.47
0.00
1.84
0.00
1.71
0.00
0.00
0.00
1.18
0.00
0.00
0.00
1.94
0.00
1.83
0.00
3.73
0.00
2.10
0.00
0.00
0.00
0.00
0.00
0.99
0.00
2.09
0.00
0.00
0.00
1.61
0.00
0.00
0.00
1.95
0.00
2.87
0.00
0.00
0.00
0.00
0.00
0.00
71
Lodging
NY
05/06/20
12/23/20
72
Multifamily
73
Retail
74
Retail
MI 04/06/25
N
NC
05/06/25
N
AL
04/06/25
N
21,568.15
0.00
26,453.70
0.00
20,952.64
0.00
03/06/23
03/06/23
03/06/23
0.00
0 13,205.66
0.00
0 10,081.19
0.00
0
12,199.22
4,015,028.14 4.220
3,033,397.75 4.250
3,582,068.53
4.368
0.00
1.80
0.00
1.39
0.00
1.48
09/30/21
12/31/21
12/31/21
75
Mixed Use
NY
04/06/25
01/18/22
76
Office
10/14/21
IN
04/06/25
N
3,397,609.48
4.450
20,022.82
0.00
04/06/22
0.00
6
1
1,788.01
0.00
0.00
77
Mobile Home
78
Retail
79
Retail
P
A
05/06/25
N
NC
05/06/25
N
GA
05/06/25
N
18,415.59
0.00
21,363.59
0.00
17,447.41
0.00
03/06/23
03/06/23
03/06/23
0.00
0 10,377.66
0.00
0 8,141.41
0.00
0
8,173.66
3,226,950.68 4.125
2,449,724.59 4.250
2,61
1,420.90
4.010
0.00
1.75
0.00
1.67
0.00
2.13
12/31/21
12/31/21
12/31/21
80
Multifamily
TX
04/06/20
01/06/20
81
Multifamily
06/24/19
NY
05/06/25
N
2,593,259.96
4.170
14,861.67
0.00
03/06/23
0.00
0
8,431.66
0.00
0.00
Page 21 of 29
Commercial Mortgage Pass-Through Certificates, Series 2015-GC30
March 2023
Revision Date: Mar 21, 2023
LOAN LEVEL DE
T
AIL

GS Mortgage Securities T
rust 2015-GC30,
Property
Transfer
Maturity
Neg
End Schedule
Note
Sched
Prepay
Prepay
Paid
Prepay
Loan
Interest
Yield Maint
PFY
Operating
Loan ID
Type
Date
Stat Date
Am
Balance
Rate P&I Adj
Date
Thru
Premium
Status **
Payment Charges
DSCR
Stmnt
82
Mixed Use
FL
05/06/25
N
3,000,000.00
3.930
9,170.00
0.00
03/06/23
0.00
0
9,170.00
0.00
0.00
83
Mobile Home
CO
04/06/20
04/28/20
84
Retail
KY
05/06/25
02/06/22
12/31/21
12/31/21
85
86
87
88
89
Self Storage
Self Storage
Retail
Self Storage
Multifamily
MI
03/06/25
N
CA
05/06/25
N
NC
05/06/25
N
MI
03/06/25
N
MI
04/06/25
N
2,494,509.08
2,
1
16,909.43
1,637,691.28
1,237,769.48
1,023,228.32
03/06/23
03/06/23
02/06/23
03/06/23
03/06/23
0.00
0
8,138.82
0.00
0
7,606.27
0.00
A
5,553.33
0.00
0
4,038.46
0.00
0
3,478.37
4.187
12,841.20
0.00
4.610
12,061.19
0.00
4.337
14,348.73
0.00
4.187
6,371.78
0.00
4.360
5,980.81
0.00
0.00
0.00
0.00
2.57
0.00
1.87
0.00
0.00
0.00
2.47
12/31/21
981,291,054.09
4,915,1
10.80
-0.02
Totals:
Count:
90
0.00
3,123,348.22
0.00
** Loan Status:
A = Payment not received but still in grace period; B = Late Payment but less than 30 days delinquent; 0 = Current; 1 = 30-59 Days Delinquent; 2 = 60-89 Days Delinquent; 3
= 90-120 Days Delinquent;
4 = Performing Matured Balloon;
5 = Non-Performing Matured Balloon; 6 = 121+ Days Delinquent; R = Repurchased.
* If State field is blank or ’XX’, loan has properties in multiple states.
Page 22 of 29
Commercial Mortgage Pass-Through Certificates, Series 2015-GC30
March 2023
Revision Date: Mar 21, 2023
LOAN LEVEL DE
T
AIL

GS Mortgage Securities T
rust 2015-GC30,
Ending Principal
Loan ID
Balance
Material Breach Date
Date Received Notice
Description
Count:
Totals:
Page 23 of 29
Commercial Mortgage Pass-Through Certificates, Series 2015-GC30
March 2023
Revision Date: Mar 21, 2023
M
A
TERIAL BREACHES AND DOCUMENT DEFECTS

MORTGAGE LOAN CHARACTERISTICS
GS Mortgage Securities T
rust 2015-GC30,
Commercial Mortgage Pass-Through Certificates, Series 2015-GC30
March 2023
Count
0M
to
4.9M
26
5M
to
9.9M
27
10M
to
14.9M
1
1
15M
to
19.9M
6
20M
to
24.9M
2
25M
to
29.9M
2
30M
to
34.9M
1
45M
to
49.9M
1
75M
to
79.9M
1
110M
to
114.9M
1
120M
to
124.9M
1
Balance ($)
%
$86,619,980.26
8.83%
$182,272,174.34
18.57%
$131,090,864.08
13.36%
$98,868,368.58
10.08%
$44,241,993.43
4.51%
$53,095,000.00
5.41%
$31,366,645.33
3.20%
$45,274,260.47
4.61%
$75,147,431.20
7.66%
$1
10,314,336.40
1
1.24%
$123,000,000.00
12.53%
Total
79
$981,291,054.09
100.00%
Remaining Principal Balance
4
8
12
16
20
0
5M
to
9.9M
20M
to
24.9M
45M
to
49.9M
120M
to
124.9M
15M
to
19.9M
30M
to
34.9M
10M
to
14.9M
0M
to
4.9M
75M
to
79.9M
25M
to
29.9M
110M
to
114.9M
Count
Balance ($)
%
3.500%
-
3.740%
3.750%
-
3.990%
4.000%
-
4.240%
4.250% - 4.490%
4.500% - 4.740%
2
$88,147,431.20
8.98%
13
$295,736,417.76
30.14%
35
$396,697,507.67
40.43%
22
$148,887,938.56
15.17%
7
$51,821,758.90
5.28%
0
5
Total Weighted Average Rate: 4.08%
10
15
Total
79
$981,291,054.09
100.00%
20
25
30
35
40
Gross Rate
45
3.500% -
3.740%
3.750% -
3.990%
4.000% -
4.240%
4.250% -
4.490%
4.500% -
4.740%
Page 24 of 29
Revision Date: Mar 21, 2023

GS Mortgage Securities T
rust 2015-GC30,
Commercial Mortgage Pass-Through Certificates, Series 2015-GC30
March 2023
Count
Balance ($)
%
TEXAS
WASHINGTON
CALIFORNIA
OHIO
NEW YORK
MICHIGAN
PENNSYL
V
ANIA
MISSOURI
FLORIDA
VARIOUS
GEORGIA
SOUTH CAROLINA
VIRGINIA
NORTH CAROLINA
DISTRICT
OF
COLUMBIA
NEW JERSEY
OKLAHOMA
COLORADO
LOUISIANA
ALABAMA
ILLINOIS
KENTUCKY
ARIZONA
INDIANA
7
$223,198,153.52
22.75%
1
$123,000,000.00
12.53%
9
$
1
10,897,295.50
1
1.30%
5
$78,142,543.33
7.96%
4
$54,450,334.70
5.55%
1
1
$52,284,955.61
5.33%
4
$46,453,060.15
4.73%
1
$45,274,260.47
4.61%
5
$40,024,061.35
4.08%
3
$31,814,838.31
3.24%
5
$31,268,791.22
3.19%
4
$21,389,645.27
2.18%
3
$18,565,885.64
1.89%
5
$15,849,863.45
1.62%
1
$13,034,691.89
1.33%
1
$12,271,897.06
1.25%
1
$1
1,681,986.45
1.19%
2
$1
1,217,289.99
1.14%
1
$9,854,599.26
1.00%
2
$9,332,068.53
0.95%
1
$7,288,214.80
0.74%
1
$6,367,504.52
0.65%
1
$4,231,503.59
0.43%
1
$3,397,609.48
0.35%
Total
79
$981,291,054.09
100.00%
Geographic Distribution by State
4
8
12
16
20
24
0
TEXAS
WASHINGTON
CALIFORNIA
OHIO
NEW YORK
MICHIGAN
PENNSYLVANIA
MISSOURI
FLORIDA
VARIOUS
GEORGIA
SOUTH CAROLINA
VIRGINIA
NORTH CAROLINA
DISTRICT OF COLUMBIA
NEW JERSEY
OKLAHOMA
COLORADO
LOUISIANA
ALABAMA
ILLINOIS
KENTUCKY
ARIZONA
INDIANA
Count
Balance ($)
%
Industrial
Lodging
Mixed Use
Mobile
Home
Park
Multifamily
Office
Retail
2
$8,337,869.84
0.85%
6
$143,382,739.76
14.61%
4
$149,919,276.00
15.28%
2
$8,916,574.52
0.91%
21
$218,802,347.85
22.30%
6
$196,503,450.38
20.02%
29
$213,095,919.69
21.72%
Self Storage
9
$42,332,876.05
4.31%
Total
79
$981,291,054.09
100.00%
Property
T
ype
Lodging
14.6
Mixed Use
15.3
Mobile Home Park
0.9
Multifamily
22.3
Office
20.0
Retail
21.7
Indu
Self Storag
e
strial
4.3 0.8
Industrial
0.8%
Lodging
14.6%
Mixed Use
15.3%
Mobile Home Park
0.9%
Multifamily
22.3%
Office
20.0%
Retail 21.7% Self
Storage
4.3%
Total:
100.0%
Page 25 of 29
Revision Date: Mar 21, 2023
MORTGAGE LOAN CHARACTERISTICS

MORTGAGE LOAN CHARACTERISTICS
GS Mortgage Securities T
rust 2015-GC30,
Commercial Mortgage Pass-Through Certificates, Series 2015-GC30
March 2023
93 -
95
65
96 -
98
13
99 -
101
1
Seasoning
Months
Count
Total Weighted Average Seasoning:
95
20
Total
79
$981,291,054.09
100.00%
40
Balance ($)
%
80
$866,023,429.28
88.25%
$83,900,979.48
8.55%
60
$31,366,645.33
3.20%
100
0
93 -
95
96 -
98
99 -
101
Months
Count
Total Weighted Average Remaining Months:
25
20
18 -
20
1
24 -
26
77
36 -
38
1
Total
79
$981,291,054.09
100.00%
40
$31,366,645.33
3.20%
$948,377,433.00
96.65%
60
$1,546,975.76
0.16%
Balance ($)
%
80
Remaining
T
erm to Maturity
100
0
18 -
20
24 -
26
36 -
38
Page 26 of 29
Revision Date: Mar 21, 2023

1.000 - 1.490
1.500 - 1.990
2.000 - 2.490
2.500 - 2.990
3.000 - 3.490
4.000 - 4.490
4.500 - 4.990
Not Avail.
MORTGAGE LOAN CHARACTERISTICS
GS Mortgage Securities T
rust 2015-GC30,
Commercial Mortgage Pass-Through Certificates, Series 2015-GC30
March 2023
0.500
-
0.990
1.000
-
1.490
1.500
-
1.990
2.000
-
2.490
2.500
-
2.990
3.000
-
3.490
4.000
-
4.490
4.500 - 4.990
Not Avail.
23
$280,787,998.22
28.61%
Total
79
$981,291,054.09
100.00%
DSCR
Total Weighted Average DSCR:
1.49
3
$28,156,416.07
2.87%
20
10
$152,617,316.28
15.55%
20
$134,924,626.29
13.75%
16
Count
Balance ($)
%
24
28
32
15
$244,388,027.71
24.90%
12
3
$90,658,898.06
9.24%
8
2
$21,153,172.20
2.16%
4
2
$22,854,599.26
2.33%
0
1
$5,750,000.00
0.59%
0.500 - 0.990
Amortizing Balloon
32.01%
Full Amortizing
0.16%
Other
67.83%
Amortizing Balloon 32.01%
Full Amortizing
0.16%
Other 67.83%
Total:
100.00%
Amortizing Balloon
Full Amortizing
Count
Balance ($)
%
32
$314,087,305.73
32.01%
1
$1,546,975.76
0.16%
Other
46
$665,656,772.60
67.83%
Total
79
$981,291,054.09
100.00%
Amortization
T
ype
Page 27 of 29
Revision Date: Mar 21, 2023

GS Mortgage Securities T
rust 2015-GC30,
Paid Thru
Loan ID
Date
Current
P&I
Advances**
Outstanding
P&I
Advances***
Outstanding
Servicing
Advances
Loan
Special
Status Servicer
Code*
Transfer
Date
Foreclosure
Date
Bankruptcy
Reo
Date
Date
Resolution
Strategy Code
76
04/06/2022
19,903.62
220,091.42
129,414.42
6
10/14/2021
2
87
02/06/2023
14,342.33
14,342.33
0.00
A
Count:
2
T
otals:
34,245.95
234,433.75
129,414.42
B = Late Payment but less than 30 days delinquent; 0 = Current; 1 = 30-59 Days Delinquent;
2 = 60-89 Days Delinquent;3 = 90-120 Days Delinquent;
4 = Performing Matured Balloon;
5 = Non-Performing Matured Balloon; 6 = 121+ Days Delinquent.
** Current advances are not provided but are derived from information received from the Servicer
***Outstanding P&I Advances include the current period
P
&I Advances and may include Servicer Advance
s
.
*
Loan Status:
A = Payment not received but still in grace period;
****
Resolution Strategy Code
1 - Modification
6 - DPO
2 - Foreclosure
7 - REO
3 - Bankruptcy
8 - Resolved
4
-
Extension
5
- Note Sale
9
-
Pending Return to Master Servicer
10 - Deed in lieu of Foreclosure
1
1-
Full Payoff
12 -
Reps and Warranties
13 - Other or TBD
Page 28 of 29
Commercial Mortgage Pass-Through Certificates, Series 2015-GC30
March 2023
Revision Date: Mar 21, 2023
DELINQUENT LOAN DE
T
AIL

SUPPLEMEN
T
AL INFORM
A
TION
GS Mortgage Securities T
rust 2015-GC30,
Commercial Mortgage Pass-Through Certificates, Series 2015-GC30
March 2023
Notice Date
Notes
May 01, 2018
Each Certificateholder and Beneficial Owner may access notices on the Certificate Administrator’s Website and each Certificateholder and
Beneficial Owner may register to receive email notifications when such notices are posted on the Certificate
Administrator’s Website ;
provided that the Certificate Administrator shall be entitled to reimbursement from the requesting Certificateholders for the reasonable
expenses of posting such notices.
Page 29 of 29
Revision Date: Mar 21, 2023