| Benchmark 2021-B31 Mortgage Trust |
| Commercial Mortgage Pass Through Certificates, Series 2021-B31 |
| STATEMENT TO NOTEHOLDERS |
| March 17, 2026 |
| TRANSACTION PARTIES | ||
| Depositor: | Citigroup Commercial Mortgage Securities Inc. | |
| Master Servicer: | Midland Loan Services, a Division of PNC Bank N.A. | |
| Special Servicer: | Rialto Capital Advisors, LLC | |
| Asset Representations Reviewer / | ||
| Pentalpha Surveillance LLC. | ||
| Operating Advisor: | ||
| Trustee: | Wilmington Trust, National Association | |
| Certificate Administrator: | Citibank, N.A. | |
| Danny Lee | Citibank, Agency and Trust | |
| (212) 816-4936 | 388 Greenwich Street Trading, 4th Floor | |
| danny1.lee@citi.com | New York, NY 10013 | |
| TABLE OF CONTENTS | |||
| 1 | . | Distribution Summary | 2 |
| 1.1 | . | Summary | 2 |
| 1.2 | . | Factors | 3 |
| 2 | . | Distribution Detail | 4 |
| 2.1 | . | Interest Detail | 4 |
| 2.2 | . | Interest Shortfall Detail | 5 |
| 2.3 | . | Principal Detail | 6 |
| 3 | . | Reconciliation Detail | 7 |
| 4 | . | Other Information | 8 |
| 5 | . | Stratification Detail | 9 |
| 6 | . | Mortgage Loan Detail | 14 |
| 7 | . | NOI Detail | 16 |
| 8 | . | Delinquency Loan Detail | 18 |
| 9 | . | Collateral Performance Delinquency and Loan Status Detail | 19 |
| 10 | . | Appraisal Reduction Detail | 20 |
| 11 | . | Historical Appraisal Reduction Detail | 21 |
| 12 | . | Loan Modification Detail | 22 |
| 13 | . | Historical Loan Modification Detail | 23 |
| 14 | . | Specially Serviced Loan Detail | 24 |
| 15 | . | Historical Specially Serviced Loan Detail | 25 |
| 16 | . | Unscheduled Principal Detail | 27 |
| 17 | . | Historical Unscheduled Principal Detail | 28 |
| 18 | . | Liquidated Loan Detail | 29 |
| 19 | . | Historical Liquidated Loan Detail | 30 |
| 20 | . | CREFC Investor Reporting Package Legends | 31 |
| 21 | . | Notes | 32 |
| Reports Available at sf.citidirect.com | v. 21.09.28 | Page 1 of 32 | © Copyright 2026 Citigroup |
| Benchmark 2021-B31 Mortgage Trust |
| Commercial Mortgage Pass Through Certificates, Series 2021-B31 |
| DISTRIBUTION SUMMARY |
| March 17, 2026 |
| Accretion | |||||||||||||
| & | |||||||||||||
| Non-Cash | |||||||||||||
| Accrual | Other | Balance | |||||||||||
| Original | Prior | Pass-Through | Day | Interest | (As Interest) | Principal | Total | Realized Loss | Increase/ | Current | |||
| Class | Balance | Balance | Rate | Count | Distributed | Distributed | Distributed | Distributed | /(Recovery) | (Decrease) | Balance | ||
| A-1 | 19,800,000.00 | 3,548,388.83 | 1.357000 | % | 30/360 | 4,012.64 | - | 436,074.79 | 440,087.43 | - | - | 3,112,314.04 | |
| A-2 | 138,050,000.00 | 138,050,000.00 | 2.588000 | % | 30/360 | 297,727.83 | - | - | 297,727.83 | - | - | 138,050,000.00 | |
| A-3 | 23,220,000.00 | 23,220,000.00 | 2.703000 | % | 30/360 | 52,303.05 | - | - | 52,303.05 | - | - | 23,220,000.00 | |
| A-4 | 215,000,000.00 | 215,000,000.00 | 2.420000 | % | 30/360 | 433,583.33 | - | - | 433,583.33 | - | - | 215,000,000.00 | |
| A-5 | 575,676,000.00 | 575,676,000.00 | 2.669000 | % | 30/360 | 1,280,399.37 | - | - | 1,280,399.37 | - | - | 575,676,000.00 | |
| A-AB | 23,526,000.00 | 23,526,000.00 | 2.615000 | % | 30/360 | 51,267.07 | - | - | 51,267.07 | - | - | 23,526,000.00 | |
| A-S | 142,182,000.00 | 142,182,000.00 | 2.892000 | % | 30/360 | 342,658.62 | - | - | 342,658.62 | - | - | 142,182,000.00 | |
| B | 63,981,000.00 | 63,981,000.00 | 2.748000 | % | 30/360 | 146,516.49 | - | - | 146,516.49 | - | - | 63,981,000.00 | |
| C | 60,428,000.00 | 60,428,000.00 | 3.195000 | % | 30/360 | 160,889.55 | - | - | 160,889.55 | - | - | 60,428,000.00 | |
| D | 37,322,000.00 | 37,322,000.00 | 2.250000 | % | 30/360 | 69,978.75 | - | - | 69,978.75 | - | - | 37,322,000.00 | |
| E | 26,659,000.00 | 26,659,000.00 | 2.250000 | % | 30/360 | 49,985.62 | - | - | 49,985.62 | - | - | 26,659,000.00 | |
| F | 26,660,000.00 | 26,660,000.00 | 2.250000 | % | 30/360 | 49,987.50 | - | - | 49,987.50 | - | - | 26,660,000.00 | |
| G | 14,218,000.00 | 14,218,000.00 | 2.250000 | % | 30/360 | 26,658.75 | - | - | 26,658.75 | - | - | 14,218,000.00 | |
| H | 55,095,655.00 | 55,095,655.00 | 2.250000 | % | 30/360 | 87,966.25 | - | - | 87,966.25 | - | - | 55,095,655.00 | |
| R | - | - | 0.000000 | % | 30/360 | - | - | - | - | - | - | - | |
| S | - | - | 0.000000 | % | 30/360 | - | - | - | - | - | - | - | |
| VRR Interest | 74,832,509.00 | 73,977,160.99 | 0.000000 | % | 30/360 | 208,394.57 | - | 22,951.30 | 231,345.87 | - | - | 73,954,209.69 | |
| Total | 1,496,650,164 | 1,479,543,205 | 3,262,329.39 | - | 459,026.09 | 3,721,355.48 | - | - | 1,479,084,179 | ||||
| Notional | |||||||||||||
| X-A | 1,137,454,000 | 1,121,202,389 | 0.758533 | % | 30/360 | 708,724.04 | - | - | 708,724.04 | - | (436,074.79 | ) | 1,120,766,314 |
| X-B | 124,409,000.00 | 124,409,000.00 | 0.428393 | % | 30/360 | 44,413.25 | - | - | 44,413.25 | - | - | 124,409,000.00 | |
| X-D | 63,981,000.00 | 63,981,000.00 | 1.143510 | % | 30/360 | 60,969.08 | - | - | 60,969.08 | - | - | 63,981,000.00 | |
| X-F | 26,660,000.00 | 26,660,000.00 | 1.143510 | % | 30/360 | 25,404.97 | - | - | 25,404.97 | - | - | 26,660,000.00 | |
| X-G | 14,218,000.00 | 14,218,000.00 | 1.143510 | % | 30/360 | 13,548.68 | - | - | 13,548.68 | - | - | 14,218,000.00 | |
| X-H | 55,095,655.00 | 55,095,655.00 | 1.143510 | % | 30/360 | 52,502.01 | - | - | 52,502.01 | - | - | 55,095,655.00 | |
| Total | 1,421,817,655 | 1,405,566,044 | 905,562.03 | - | - | 905,562.03 | - | (436,074.79 | ) | 1,405,129,969 | |||
| Grand Total | 2,918,467,819 | 2,885,109,249 | 4,167,891.42 | - | 459,026.09 | 4,626,917.51 | - | (436,074.79 | ) | 2,884,214,148 | |||
| Reports Available at sf.citidirect.com | v. 21.09.28 | Page 2 of 32 | © Copyright 2026 Citigroup |
| Benchmark 2021-B31 Mortgage Trust |
| Commercial Mortgage Pass Through Certificates, Series 2021-B31 |
| DISTRIBUTION SUMMARY - FACTORS |
| March 17, 2026 |
| Accretion | ||||||||||
| & | ||||||||||
| Non-Cash | ||||||||||
| Other | Balance | |||||||||
| Record | Interest | (As Interest) | Principal | Total | Realized Loss | Increase/ | Current | |||
| Class | CUSIP | Date | Distributed | Distributed | Distributed | Distributed | /(Recovery) | (Decrease) | Balance | |
| A-1 | 08163 | MAA5 | 02/27/2026 | 0.20265859 | - | 22.02397929 | 22.22663788 | - | - | 157.18757778 |
| A-2 | 08163 | MAB3 | 02/27/2026 | 2.15666664 | - | - | 2.15666664 | - | - | 1,000.00000000 |
| A-3 | 08163 | MAC1 | 02/27/2026 | 2.25250000 | - | - | 2.25250000 | - | - | 1,000.00000000 |
| A-4 | 08163 | MAD9 | 02/27/2026 | 2.01666665 | - | - | 2.01666665 | - | - | 1,000.00000000 |
| A-5 | 08163 | MAE7 | 02/27/2026 | 2.22416667 | - | - | 2.22416667 | - | - | 1,000.00000000 |
| A-AB | 08163 | MAF4 | 02/27/2026 | 2.17916645 | - | - | 2.17916645 | - | - | 1,000.00000000 |
| A-S | 08163 | MAH0 | 02/27/2026 | 2.41000000 | - | - | 2.41000000 | - | - | 1,000.00000000 |
| B | 08163 | MAJ6 | 02/27/2026 | 2.29000000 | - | - | 2.29000000 | - | - | 1,000.00000000 |
| C | 08163 | MAK3 | 02/27/2026 | 2.66250000 | - | - | 2.66250000 | - | - | 1,000.00000000 |
| D | 08163MAW7 U0744XAF2 | 02/27/2026 | 1.87500000 | - | - | 1.87500000 | - | - | 1,000.00000000 | |
| E | 08163MAY3 U0744XAG0 | 02/27/2026 | 1.87499981 | - | - | 1.87499981 | - | - | 1,000.00000000 | |
| F | 08163MBA4 U0744XAH8 | 02/27/2026 | 1.87500000 | - | - | 1.87500000 | - | - | 1,000.00000000 | |
| G | 08163MBC0 U0744XAJ4 | 02/27/2026 | 1.87500000 | - | - | 1.87500000 | - | - | 1,000.00000000 | |
| H | 08163MBE6 U0744XAK1 | 02/27/2026 | 1.59660957 | - | - | 1.59660957 | - | - | 1,000.00000000 | |
| R | 08163 | MBJ5 | 02/27/2026 | - | - | - | - | - | - | - |
| S | 00163 | MBH9 | 02/27/2026 | - | - | - | - | - | - | - |
| VRR Interest | 08163 | MBM8 | 02/27/2026 | 2.78481335 | - | 0.30670226 | 3.09151561 | - | - | 988.26313160 |
| X-A | 08163 | MAG2 | 02/27/2026 | 0.62307930 | - | - | 0.62307930 | - | - | 985.32891356 |
| X-B | 08163MAL1 U0744XAA3 | 02/27/2026 | 0.35699387 | - | - | 0.35699387 | - | - | 1,000.00000000 | |
| X-D | 08163MAN7 U0744XAB1 | 02/27/2026 | 0.95292477 | - | - | 0.95292477 | - | - | 1,000.00000000 | |
| X-F | 08163MAQ0 U0744XAC9 | 02/27/2026 | 0.95292461 | - | - | 0.95292461 | - | - | 1,000.00000000 | |
| X-G | 08163MAS6 U0744XAD7 | 02/27/2026 | 0.95292446 | - | - | 0.95292446 | - | - | 1,000.00000000 | |
| X-H | 08163MAU1 U0744XAE5 | 02/27/2026 | 0.95292469 | - | - | 0.95292469 | - | - | 1,000.00000000 | |
| Reports Available at sf.citidirect.com | v. 21.09.28 | Page 3 of 32 | © Copyright 2026 Citigroup |
| Benchmark 2021-B31 Mortgage Trust |
| Commercial Mortgage Pass Through Certificates, Series 2021-B31 |
| DISTRIBUTION INFORMATION - INTEREST DETAIL |
| March 17, 2026 |
| Rate | Interest | Shortfall | Paid | |||||||||||||
| Cap | ||||||||||||||||
| Accrual | Net | Accreted | Non | Carry | Cap Carryover | Carryover | ||||||||||
| Class | Uncapped Capped | Next | Dates | Accrued | /Deferred | Recovered | Forward | /Basis Risk | Accrued | Carry Forward /Basis Risk | Total | |||||
| A-1 | 1.35700 | % | 1.35700 | % | 1.35700 | % | 02/01-02/28 | 4,012.64 | - | - | - | - | 4,012.64 | - | - | 4,012.64 |
| A-2 | 2.58800 | % | 2.58800 | % | 2.58800 | % | 02/01-02/28 | 297,727.83 | - | - | - | - | 297,727.83 | - | - | 297,727.83 |
| A-3 | 2.70300 | % | 2.70300 | % | 2.70300 | % | 02/01-02/28 | 52,303.05 | - | - | - | - | 52,303.05 | - | - | 52,303.05 |
| A-4 | 2.42000 | % | 2.42000 | % | 2.42000 | % | 02/01-02/28 | 433,583.33 | - | - | - | - | 433,583.33 | - | - | 433,583.33 |
| A-5 | 2.66900 | % | 2.66900 | % | 2.66900 | % | 02/01-02/28 | 1,280,399.37 | - | - | - | - | 1,280,399.37 | - | - | 1,280,399.37 |
| A-AB | 2.61500 | % | 2.61500 | % | 2.61500 | % | 02/01-02/28 | 51,267.07 | - | - | - | - | 51,267.07 | - | - | 51,267.07 |
| A-S | 2.89200 | % | 2.89200 | % | 2.89200 | % | 02/01-02/28 | 342,658.62 | - | - | - | - | 342,658.62 | - | - | 342,658.62 |
| B | 2.74800 | % | 2.74800 | % | 2.74800 | % | 02/01-02/28 | 146,516.49 | - | - | - | - | 146,516.49 | - | - | 146,516.49 |
| C | 3.19500 | % | 3.19500 | % | 3.19500 | % | 02/01-02/28 | 160,889.55 | - | - | - | - | 160,889.55 | - | - | 160,889.55 |
| D | 2.25000 | % | 2.25000 | % | 2.25000 | % | 02/01-02/28 | 69,978.75 | - | - | - | - | 69,978.75 | - | - | 69,978.75 |
| E | 2.25000 | % | 2.25000 | % | 2.25000 | % | 02/01-02/28 | 49,985.62 | - | - | - | - | 49,985.62 | - | - | 49,985.62 |
| F | 2.25000 | % | 2.25000 | % | 2.25000 | % | 02/01-02/28 | 49,987.50 | - | - | - | - | 49,987.50 | - | - | 49,987.50 |
| G | 2.25000 | % | 2.25000 | % | 2.25000 | % | 02/01-02/28 | 26,658.75 | - | - | - | - | 26,658.75 | - | - | 26,658.75 |
| H | 2.25000 | % | 2.25000 | % | 2.25000 | % | 02/01-02/28 | 103,304.35 | - | - | 16,542.21 | - | 87,966.25 | - | - | 87,966.25 |
| R | 0.00000 | % | 0.00000 | % | 0.00000 | % | 02/01-02/28 | - | - | - | - | - | - | - | - | - |
| S | 0.00000 | % | 0.00000 | % | 0.00000 | % | 02/01-02/28 | - | - | - | - | - | - | - | - | - |
| VRR Interest | 0.00000 | % | 0.00000 | % | 0.00000 | % | 02/01-02/28 | 208,394.57 | - | - | - | - | 208,394.57 | - | - | 208,394.57 |
| Total | 3,277,667.49 | - | - | 16,542.21 | - | 3,262,329.39 | - | - | 3,262,329.39 | |||||||
| Notional | ||||||||||||||||
| X-A | 0.77577 | % | 0.75853 | % | 0.75853 | % | 02/01-02/28 | 708,724.04 | - | - | - | - | 708,724.04 | - | - | 708,724.04 |
| X-B | 0.42737 | % | 0.42839 | % | 0.42839 | % | 02/01-02/28 | 44,413.25 | - | - | - | - | 44,413.25 | - | - | 44,413.25 |
| X-D | 1.14249 | % | 1.14351 | % | 1.14351 | % | 02/01-02/28 | 60,969.08 | - | - | - | - | 60,969.08 | - | - | 60,969.08 |
| X-F | 1.14249 | % | 1.14351 | % | 1.14351 | % | 02/01-02/28 | 25,404.97 | - | - | - | - | 25,404.97 | - | - | 25,404.97 |
| X-G | 1.14249 | % | 1.14351 | % | 1.14351 | % | 02/01-02/28 | 13,548.68 | - | - | - | - | 13,548.68 | - | - | 13,548.68 |
| X-H | 1.14249 | % | 1.14351 | % | 1.14351 | % | 02/01-02/28 | 52,502.01 | - | - | - | - | 52,502.01 | - | - | 52,502.01 |
| Total | 905,562.03 | - | - | - | - | 905,562.03 | - | - | 905,562.03 | |||||||
| Grand Total | 4,183,229.52 | - | - | 16,542.21 | - | 4,167,891.42 | - | - | 4,167,891.42 | |||||||
| Reports Available at sf.citidirect.com | v. 21.09.28 | Page 4 of 32 | © Copyright 2026 Citigroup |
| Benchmark 2021-B31 Mortgage Trust |
| Commercial Mortgage Pass Through Certificates, Series 2021-B31 |
| DISTRIBUTION INFORMATION - INTEREST SHORTFALL DETAIL |
| March 17, 2026 |
| Cap Carryover / | |||||||||||||
| Non-Recov Shortfall | Carry Forward Interest | Basis Risk Shortfall | |||||||||||
| Other | |||||||||||||
| Class | PPIS | SSRA | Shortfall | Prior | Int. on Prior | New | Paid | Outstanding | Prior | Int. on Prior | New | Paid | Outstanding |
| A-1 | - | - | - | - | - | - | - | - | - | - | - | - | - |
| A-2 | - | - | - | - | - | - | - | - | - | - | - | - | - |
| A-3 | - | - | - | - | - | - | - | - | - | - | - | - | - |
| A-4 | - | - | - | - | - | - | - | - | - | - | - | - | - |
| A-5 | - | - | - | - | - | - | - | - | - | - | - | - | - |
| A-AB | - | - | - | - | - | - | - | - | - | - | - | - | - |
| A-S | - | - | - | - | - | - | - | - | - | - | - | - | - |
| B | - | - | - | - | - | - | - | - | - | - | - | - | - |
| C | - | - | - | - | - | - | - | - | - | - | - | - | - |
| D | - | - | - | - | - | - | - | - | - | - | - | - | - |
| E | - | - | - | - | - | - | - | - | - | - | - | - | - |
| F | - | - | - | - | - | - | - | - | - | - | - | - | - |
| G | - | - | - | - | - | - | - | - | - | - | - | - | - |
| H | - | - | - | 642,192.32 | 1,204.11 | 15,338.10 | - | 658,734.53 | - | - | - | - | - |
| R | - | - | - | - | - | - | - | - | - | - | - | - | - |
| S | - | - | - | - | - | - | - | - | - | - | - | - | - |
| VRR Interest | - | - | - | - | - | - | - | - | - | - | - | - | - |
| Total | - | - | - | 642,192.32 | 1,204.11 | 15,338.10 | - | 658,734.53 | - | - | - | - | - |
| Notional | |||||||||||||
| X-A | - | - | - | - | - | - | - | - | - | - | - | - | - |
| X-B | - | - | - | - | - | - | - | - | - | - | - | - | - |
| X-D | - | - | - | - | - | - | - | - | - | - | - | - | - |
| X-F | - | - | - | - | - | - | - | - | - | - | - | - | - |
| X-G | - | - | - | - | - | - | - | - | - | - | - | - | - |
| X-H | - | - | - | - | - | - | - | - | - | - | - | - | - |
| Total | - | - | - | - | - | - | - | - | - | - | - | - | - |
| Grand Total | - | - | - | 642,192.32 | 1,204.11 | 15,338.10 | - | 658,734.53 | - | - | - | - | - |
| Reports Available at sf.citidirect.com | v. 21.09.28 | Page 5 of 32 | © Copyright 2026 Citigroup |
| Benchmark 2021-B31 Mortgage Trust |
| Commercial Mortgage Pass Through Certificates, Series 2021-B31 |
| DISTRIBUTION INFORMATION - PRINCIPAL DETAIL |
| March 17, 2026 |
| Accretion | |||||||||||||||
| & | |||||||||||||||
| Non-Cash | |||||||||||||||
| Balance | Cumulative | ||||||||||||||
| Prior | Principal | Accreted | Realized Loss | Increase/ | Current | Realized | Class % | Class % | Sub % | Sub % | |||||
| Class | Balance | Distributed | Principal | /(Recovery) | (Decrease) | Balance | Loss | Original | Current | Original | Current | ||||
| A-1 | 3,548,388.83 | 436,074.79 | - | - | - | 3,112,314.04 | - | 1.32 | % | 0.21 | % | 30.00 | % | 30.36 | % |
| A-2 | 138,050,000.00 | - | - | - | - | 138,050,000.00 | - | 9.22 | % | 9.33 | % | 30.00 | % | 30.36 | % |
| A-3 | 23,220,000.00 | - | - | - | - | 23,220,000.00 | - | 1.55 | % | 1.57 | % | 30.00 | % | 30.36 | % |
| A-4 | 215,000,000.00 | - | - | - | - | 215,000,000.00 | - | 14.37 | % | 14.54 | % | 30.00 | % | 30.36 | % |
| A-5 | 575,676,000.00 | - | - | - | - | 575,676,000.00 | - | 38.46 | % | 38.92 | % | 30.00 | % | 30.36 | % |
| A-AB | 23,526,000.00 | - | - | - | - | 23,526,000.00 | - | 1.57 | % | 1.59 | % | 30.00 | % | 30.36 | % |
| A-S | 142,182,000.00 | - | - | - | - | 142,182,000.00 | - | 9.50 | % | 9.61 | % | 20.00 | % | 20.24 | % |
| B | 63,981,000.00 | - | - | - | - | 63,981,000.00 | - | 4.27 | % | 4.33 | % | 15.50 | % | 15.68 | % |
| C | 60,428,000.00 | - | - | - | - | 60,428,000.00 | - | 4.04 | % | 4.09 | % | 11.25 | % | 11.38 | % |
| D | 37,322,000.00 | - | - | - | - | 37,322,000.00 | - | 2.49 | % | 2.52 | % | 8.63 | % | 8.73 | % |
| E | 26,659,000.00 | - | - | - | - | 26,659,000.00 | - | 1.78 | % | 1.80 | % | 6.75 | % | 6.83 | % |
| F | 26,660,000.00 | - | - | - | - | 26,660,000.00 | - | 1.78 | % | 1.80 | % | 4.88 | % | 4.93 | % |
| G | 14,218,000.00 | - | - | - | - | 14,218,000.00 | - | 0.95 | % | 0.96 | % | 3.88 | % | 3.92 | % |
| H | 55,095,655.00 | - | - | - | - | 55,095,655.00 | - | 3.68 | % | 3.72 | % | 0.00 | % | 0.00 | % |
| R | - | - | - | - | - | - | - | 0.00 | % | 0.00 | % | 0.00 | % | 0.00 | % |
| S | - | - | - | - | - | - | - | 0.00 | % | 0.00 | % | 0.00 | % | 0.00 | % |
| VRR Interest | 73,977,160.99 | 22,951.30 | - | - | - | 73,954,209.69 | - | 5.00 | % | 5.00 | % | 0.00 | % | 0.00 | % |
| Total | 1,479,543,204.82 | 459,026.09 | - | - | - | 1,479,084,178.73 | - | 99.98 | % | 100.00 | % | ||||
| Reports Available at sf.citidirect.com | v. 21.09.28 | Page 6 of 32 | © Copyright 2026 Citigroup |
| Benchmark 2021-B31 Mortgage Trust |
| Commercial Mortgage Pass Through Certificates, Series 2021-B31 |
| RECONCILIATION DETAIL |
| March 17, 2026 |
| SOURCE OF FUNDS | ALLOCATION OF FUNDS | ||||
| Interest Funds Available | Scheduled Fees | ||||
| Scheduled Interest | 3,919,449.27 | Servicing Fee | 5,842.97 | ||
| Prepayment Interest Shortfall | - | Trustee/Certificate Administrator Fee | 6,789.46 | ||
| Interest Adjustments | - | Operating Advisor Fee | 955.13 | ||
| ASER Amount | - | Asset Representations Reviewer Ongoing Fee | 287.69 | ||
| Realized Loss in Excess of Principal Balance | - | CREFC Intellectual Property Royalty License Fee | 575.40 | ||
| Total Interest Funds Available | 3,919,449.27 | Total Scheduled Fees | 14,450.65 | ||
| Principal Funds Available | Additional Fees, Expenses, etc. | ||||
| Scheduled Principal | 459,026.09 | Additional Servicing Fee | - | ||
| Unscheduled Principal Collections | - | Special Servicing Fee | 13,263.89 | ||
| Net Liquidation Proceeds | - | Work-out Fee | 2,702.55 | ||
| Repurchased Principal | - | Liquidation Fee | - | ||
| Substitution Principal | - | Trust Fund Expenses | - | ||
| Other Principal | - | Trust Advisor Expenses | - | ||
| Reimbursement of Interest on Advances to the Servicer | 178.96 | ||||
| Total Principal Funds Available | 459,026.09 | ||||
| Borrower Reimbursable Trust Fund Expenses | - | ||||
| Other Funds Available | |||||
| Other Expenses | - | ||||
| Yield Maintenance Charges | - | ||||
| Withdrawal of Withheld Amounts from the Interest Reserve | Total Additional Fees, Expenses, etc. | 16,145.40 | |||
| Account | 279,038.20 | ||||
| Distributions | |||||
| Deposit of Withheld Amounts to the Interest Reserve Account | - | ||||
| Interest Distribution | 4,167,891.42 | ||||
| Total Other Funds Available | 279,038.20 | Principal Distribution | 459,026.09 | ||
| Yield Maintenance Charge Distribution | - | ||||
| Total Distributions | 4,626,917.51 | ||||
| Total Funds Available | 4,657,513.56 | ||||
| Total Funds Allocated | 4,657,513.56 | ||||
| Reports Available at sf.citidirect.com | v. 21.09.28 | Page 7 of 32 | © Copyright 2026 Citigroup |
| Benchmark 2021-B31 Mortgage Trust |
| Commercial Mortgage Pass Through Certificates, Series 2021-B31 |
| OTHER INFORMATION |
| Interest Reserve Account Information |
| March 17, 2026 |
| Beginning Interest Reserve Account Balance | 279,038.20 | |
| Deposit of Withheld Amounts to the Interest Reserve Account | 0.00 | |
| Withdrawal of Withheld Amounts from the Interest Reserve Account | -279,038.20 | |
| Ending Interest Reserve Account Balance | 0.00 | |
| Collateral Information | ||
| % of Cut-Off Principal Balance Outstanding | 98.826313 | % |
| Controlling Class Information | ||
| Controlling Class is Class H. | ||
| The Controlling Class Representative is RREF IV Debt AIV, LP. | ||
| There Are No Disclosable Special Servicer Fees. |
| Reports Available at sf.citidirect.com | v. 21.09.28 | Page 8 of 32 | © Copyright 2026 Citigroup |
| Benchmark 2021-B31 Mortgage Trust |
| Commercial Mortgage Pass Through Certificates, Series 2021-B31 |
| STRATIFICATION DETAIL |
| March 17, 2026 |
| Anticipated Remaining Term | ||||||
| Anticipated Remaining | Asset | Ending Scheduled | % of | Wtd Avg | ||
| Term Range | Count | Balance | Agg.Bal. WAC | WAM | DSCR | |
| 60 Months or Less | 5 | 170,908,316.83 | 11.56 | 3.3815 | 11 | 2.710135 |
| 61 to 90 Months | 57 | 1,308,175,861.90 | 88.44 | 3.4092 | 68 | 2.674438 |
| 91 Months or Greater | 0 | 0.00 | 0.00 | 0.0000 | 0 | 0.000000 |
| Total | 62 | 1,479,084,178.73 | 100.00 | 3.4060 | 61 | 2.678563 |
| Debt Service Coverage Ratio | ||||||
| Debt Service Coverage | Asset | Ending Scheduled | % of | Wtd Avg | ||
| Ratio Range | Count | Balance | Agg.Bal. WAC | WAM | DSCR | |
| 1.250 or Less | 1 | 32,968,339.98 | 2.23 | 2.6200 | 69 | 1.090000 |
| 1.251 to 1.500 | 5 | 93,882,922.29 | 6.35 | 3.5519 | 38 | 1.460906 |
| 1.501 to 1.750 | 3 | 105,950,334.58 | 7.16 | 3.8758 | 68 | 1.589986 |
| 1.751 to 2.000 | 8 | 121,634,012.13 | 8.22 | 3.3814 | 68 | 1.870291 |
| 2.001 to 2.250 | 9 | 154,876,451.42 | 10.47 | 3.3829 | 68 | 2.186938 |
| 2.251 to 2.500 | 9 | 219,150,000.00 | 14.82 | 3.7759 | 68 | 2.367757 |
| 2.501 to 2.750 | 9 | 193,139,175.00 | 13.06 | 3.5777 | 56 | 2.597217 |
| 2.751 to 3.000 | 0 | 0.00 | 0.00 | 0.0000 | 0 | 0.000000 |
| 3.001 to 3.250 | 4 | 92,711,711.00 | 6.27 | 3.4423 | 68 | 3.130882 |
| 3.251 to 3.500 | 3 | 142,705,416.04 | 9.65 | 3.1290 | 68 | 3.321537 |
| 3.501 to 3.750 | 6 | 230,140,816.29 | 15.56 | 2.8331 | 48 | 3.541546 |
| 3.751 to 4.000 | 1 | 30,000,000.00 | 2.03 | 2.9900 | 67 | 3.800000 |
| 4.001 or Greater | 4 | 61,925,000.00 | 4.19 | 3.9751 | 68 | 5.494247 |
| Total | 62 | 1,479,084,178.73 | 100.00 | 3.4060 | 61 | 2.678563 |
| Reports Available at sf.citidirect.com | v. 21.09.28 | Page 9 of 32 | © Copyright 2026 Citigroup |
| Benchmark 2021-B31 Mortgage Trust |
| Commercial Mortgage Pass Through Certificates, Series 2021-B31 |
| STRATIFICATION DETAIL |
| March 17, 2026 |
| Ending Schedule Balance | ||||||
| Ending Schedule Balance | Asset | Ending Scheduled | % of | Wtd Avg | ||
| Range | Count | Balance | Agg.Bal. WAC WAM | DSCR | ||
| 1 to 5,000,000 | 5 | 15,761,224.43 | 1.07 | 3.6440 | 68 | 2.548907 |
| 10,000,001 to 15,000,000 | 4 | 50,969,175.00 | 3.45 | 3.5110 | 67 | 3.369933 |
| 15,000,001 to 20,000,000 | 12 | 212,771,880.67 | 14.39 | 3.9454 | 65 | 2.743130 |
| 20,000,001 to 25,000,000 | 5 | 112,279,591.86 | 7.59 | 3.2379 | 68 | 2.943548 |
| 25,000,001 to 30,000,000 | 3 | 87,355,416.04 | 5.91 | 2.7203 | 67 | 3.163443 |
| 30,000,001 to 35,000,000 | 3 | 98,368,339.98 | 6.65 | 3.1882 | 49 | 1.944665 |
| 35,000,001 to 40,000,000 | 4 | 157,600,000.00 | 10.66 | 3.6212 | 69 | 2.521929 |
| 40,000,001 to 45,000,000 | 3 | 126,043,016.26 | 8.52 | 3.1543 | 49 | 1.922865 |
| 45,000,001 to 50,000,000 | 3 | 143,600,000.00 | 9.71 | 3.5662 | 68 | 2.504875 |
| 5,000,001 to 10,000,000 | 14 | 106,085,199.91 | 7.17 | 3.7478 | 65 | 2.376171 |
| 50,000,001 to 55,000,000 | 2 | 108,350,334.58 | 7.33 | 3.5772 | 67 | 2.453703 |
| 55,000,001 to 60,000,000 | 2 | 114,900,000.00 | 7.77 | 3.2483 | 69 | 2.921488 |
| 60,000,001 to 65,000,000 | 0 | 0.00 | 0.00 | 0.0000 | 0 | 0.000000 |
| 65,000,001 to 70,000,000 | 1 | 70,000,000.00 | 4.73 | 2.7920 | 68 | 3.510000 |
| 70,000,001 to 75,000,000 | 1 | 75,000,000.00 | 5.07 | 2.8380 | 8 | 3.590000 |
| 75,000,001 to 80,000,000 | 0 | 0.00 | 0.00 | 0.0000 | 0 | 0.000000 |
| 80,000,001 to 85,000,000 | 0 | 0.00 | 0.00 | 0.0000 | 0 | 0.000000 |
| 85,000,000+ | 0 | 0.00 | 0.00 | 0.0000 | 0 | 0.000000 |
| Total | 62 | 1,479,084,178.73 | 100.00 | 3.4060 | 61 | 2.678563 |
| Reports Available at sf.citidirect.com | v. 21.09.28 | Page 10 of 32 | © Copyright 2026 Citigroup |
| Benchmark 2021-B31 Mortgage Trust |
| Commercial Mortgage Pass Through Certificates, Series 2021-B31 |
| STRATIFICATION DETAIL |
| March 17, 2026 |
| Loan Rate | ||||||
| Asset | Ending Scheduled | % of | Wtd Avg | |||
| Loan Rate Range | Count | Balance | Agg.Bal. WAC WAM | DSCR | ||
| 4.00 or Less | 57 | 1,415,643,878.16 | 95.71 | 3.3420 | 63 | 2.625495 |
| 4.01 to 4.25 | 1 | 2,400,000.00 | 0.16 | 4.1000 | 68 | 2.180000 |
| 4.26 to 4.50 | 3 | 41,065,300.57 | 2.78 | 4.3650 | 15 | 2.274571 |
| 4.51 to 4.75 | 0 | 0.00 | 0.00 | 0.0000 | 0 | 0.000000 |
| 4.76 to 5.00 | 0 | 0.00 | 0.00 | 0.0000 | 0 | 0.000000 |
| 5.01 to 5.25 | 0 | 0.00 | 0.00 | 0.0000 | 0 | 0.000000 |
| 5.26 to 5.50 | 0 | 0.00 | 0.00 | 0.0000 | 0 | 0.000000 |
| 5.51 to 5.75 | 0 | 0.00 | 0.00 | 0.0000 | 0 | 0.000000 |
| 5.76 to 6.00 | 1 | 19,975,000.00 | 1.35 | 5.8870 | 68 | 7.330000 |
| 6.01 to 6.25 | 0 | 0.00 | 0.00 | 0.0000 | 0 | 0.000000 |
| 6.26 to 6.50 | 0 | 0.00 | 0.00 | 0.0000 | 0 | 0.000000 |
| 6.51 to 6.75 | 0 | 0.00 | 0.00 | 0.0000 | 0 | 0.000000 |
| 6.76 to 7.00 | 0 | 0.00 | 0.00 | 0.0000 | 0 | 0.000000 |
| 7.01 or Greater | 0 | 0.00 | 0.00 | 0.0000 | 0 | 0.000000 |
| Total | 62 | 1,479,084,178.73 | 100.00 | 3.4060 | 61 | 2.678563 |
| Property Type | ||||||
| Asset | Ending Scheduled | % of | Wtd Avg | |||
| Property Type Range | Count | Balance | Agg.Bal. WAC WAM | DSCR | ||
| Industrial | 7 | 130,731,451.42 | 8.84 | 3.7216 | 68 | 2.421710 |
| Lodging | 0 | 0.00 | 0.00 | 0.0000 | 0 | 0.000000 |
| Mixed Use | 7 | 231,940,816.29 | 15.68 | 3.2162 | 68 | 2.939527 |
| Multifamily | 13 | 266,689,056.59 | 18.03 | 3.3381 | 67 | 2.172919 |
| Office | 14 | 406,740,575.83 | 27.50 | 3.2486 | 51 | 2.764559 |
| Other | 7 | 184,289,727.26 | 12.46 | 3.4730 | 55 | 2.358493 |
| Retail | 12 | 233,532,551.34 | 15.79 | 3.6793 | 67 | 3.285832 |
| Self Storage | 1 | 6,660,000.00 | 0.45 | 3.5100 | 69 | 2.520000 |
| Total | 62 | 1,479,084,178.73 | 100.00 | 3.4060 | 61 | 2.678563 |
| Reports Available at sf.citidirect.com | v. 21.09.28 | Page 11 of 32 | © Copyright 2026 Citigroup |
| Benchmark 2021-B31 Mortgage Trust |
| Commercial Mortgage Pass Through Certificates, Series 2021-B31 |
| STRATIFICATION DETAIL |
| March 17, 2026 |
| Remaining Amortization Term | ||||||
| Remaining Amortization | Asset | Ending Scheduled | % of | Wtd Avg | ||
| Term Range | Count | Balance | Agg.Bal. | WAC | WAM | DSCR |
| 240 Months or Less | 50 | 1,211,772,527.29 | 81.93 | 3.4482 | 62 | 2.874340 |
| 241 to 270 Months | 0 | 0.00 | 0.00 | 0.0000 | 0 | 0.000000 |
| 271 to 300 Months | 0 | 0.00 | 0.00 | 0.0000 | 0 | 0.000000 |
| 301 Months or Greater | 12 | 267,311,651.44 | 18.07 | 3.2148 | 58 | 1.791072 |
| Total | 62 | 1,479,084,178.73 | 100.00 | 3.4060 | 61 | 2.678563 |
| Seasoning | ||||||
| Asset | Ending Scheduled | % of | Wtd Avg | |||
| Seasoning Range | Count | Balance | Agg.Bal. | WAC | WAM | DSCR |
| 12 Months or Less | 0 | 0.00 | 0.00 | 0.0000 | 0 | 0.000000 |
| 13 to 24 Months | 0 | 0.00 | 0.00 | 0.0000 | 0 | 0.000000 |
| 25 to 36 Months | 0 | 0.00 | 0.00 | 0.0000 | 0 | 0.000000 |
| 37 to 48 Months | 0 | 0.00 | 0.00 | 0.0000 | 0 | 0.000000 |
| 49 Months or Greater | 62 | 1,479,084,178.73 | 100.00 | 3.4060 | 61 | 2.678563 |
| Total | 62 | 1,479,084,178.73 | 100.00 | 3.4060 | 61 | 2.678563 |
| Reports Available at sf.citidirect.com | v. 21.09.28 | Page 12 of 32 | © Copyright 2026 Citigroup |
| Benchmark 2021-B31 Mortgage Trust |
| Commercial Mortgage Pass Through Certificates, Series 2021-B31 |
| STRATIFICATION DETAIL |
| March 17, 2026 |
| State | ||||||
| Asset | Ending Scheduled | % of | Wtd Avg | |||
| State Range | Count | Balance | Agg.Bal. WAC WAM | DSCR | ||
| Arizona | 1 | 55,000,000.00 | 3.72 | 3.3610 | 67 | 3.340000 |
| California | 8 | 145,450,000.00 | 9.83 | 3.2677 | 67 | 3.228879 |
| Connecticut | 2 | 94,000,000.00 | 6.36 | 3.2570 | 69 | 2.560000 |
| Florida | 3 | 59,150,000.00 | 4.00 | 3.8915 | 68 | 2.325554 |
| Georgia | 2 | 21,575,000.00 | 1.46 | 5.7789 | 68 | 6.934728 |
| Illinois | 1 | 42,500,000.00 | 2.87 | 3.7800 | 69 | 2.500000 |
| Indiana | 1 | 8,200,000.00 | 0.55 | 3.3090 | 69 | 4.810000 |
| Kansas | 1 | 9,830,000.00 | 0.66 | 3.8900 | 68 | 1.950000 |
| Massachusetts | 6 | 211,290,816.29 | 14.29 | 2.7623 | 67 | 3.133415 |
| Michigan | 2 | 12,700,000.00 | 0.86 | 3.6859 | 69 | 3.066142 |
| Mississippi | 1 | 9,065,300.57 | 0.61 | 4.3200 | 32 | 1.500000 |
| N/A | 6 | 191,289,727.26 | 12.93 | 3.4986 | 55 | 2.408368 |
| New Jersey | 5 | 175,293,509.65 | 11.85 | 2.8250 | 42 | 2.380600 |
| New York | 9 | 174,326,867.46 | 11.79 | 3.6101 | 68 | 2.239448 |
| North Carolina | 1 | 12,954,175.00 | 0.88 | 3.8080 | 69 | 2.570000 |
| Ohio | 3 | 32,080,000.00 | 2.17 | 3.8937 | 50 | 2.575704 |
| Oregon | 1 | 40,000,000.00 | 2.70 | 3.6410 | 69 | 3.110000 |
| Rhode Island | 2 | 58,250,000.00 | 3.94 | 3.7908 | 69 | 2.321202 |
| Tennessee | 1 | 6,660,000.00 | 0.45 | 3.5100 | 69 | 2.520000 |
| Texas | 3 | 69,854,346.71 | 4.72 | 3.8148 | 69 | 1.627759 |
| Utah | 1 | 30,400,000.00 | 2.06 | 4.3750 | 8 | 2.520000 |
| Vermont | 1 | 5,949,435.79 | 0.40 | 3.6000 | 68 | 1.300000 |
| Virginia | 1 | 13,265,000.00 | 0.90 | 3.1800 | 65 | 3.200000 |
| Total | 62 | 1,479,084,178.73 | 100.00 | 3.4060 | 61 | 2.678563 |
| Reports Available at sf.citidirect.com | v. 21.09.28 | Page 13 of 32 | © Copyright 2026 Citigroup |
| Benchmark 2021-B31 Mortgage Trust |
| Commercial Mortgage Pass Through Certificates, Series 2021-B31 |
| MORTGAGE LOAN DETAIL |
| March 17, 2026 |
| Prop | Paid | Beginning | Ending | Payment Workout Mod | |||||||||||||||
| Type | Through | Gross | Interest | Principal | Scheduled | Scheduled | Maturity | Status | Strategy Code | ||||||||||
| Loan ID | OMCR | (1) | City | State | Date | Coupon | Payment | Payment | Balance | Balance | Date | (2 | ) | (3 | ) | (4 | ) | ||
| 30508068 | 10 | N/A | 03/06/2026 | 3.24000 | % | 102,386.86 | 86,689.23 | 40,629,705.49 | 40,543,016.26 | 11/06/2026 | 0 | 0 | 0 | ||||||
| 30508200 | 11 | A1 | MF | Harrison | NJ | 03/01/2026 | 2.45500 | % | 82,106.11 | - | 43,000,000.00 | 43,000,000.00 | 12/01/2031 | 0 | 0 | 0 | |||
| 30508148 | 12 | MF | IL | 02/06/2026 | 3.78000 | % | 124,950.00 | - | 42,500,000.00 | 42,500,000.00 | 12/06/2031 | B | 98 | 0 | |||||
| 30507887 | 13 | A1 | IN | Town of Burrillville | RI | 02/06/2026 | 3.71000 | % | 115,422.22 | - | 40,000,000.00 | 40,000,000.00 | 12/06/2031 | B | 0 | 0 | |||
| 30508193 | 14 | A1 | RT | Tualatin | OR | 03/05/2026 | 3.64100 | % | 113,275.56 | - | 40,000,000.00 | 40,000,000.00 | 12/05/2031 | 0 | 0 | 0 | |||
| 30320459 | 15 | A1 | IN | 03/06/2026 | 3.85500 | % | 119,933.33 | - | 40,000,000.00 | 40,000,000.00 | 12/06/2031 | 0 | 0 | 0 | |||||
| 30508186 | 16 | MF | Fort Lee | NJ | 03/06/2026 | 2.62000 | % | 67,286.02 | 50,970.98 | 33,019,310.96 | 32,968,339.98 | 12/06/2031 | 0 | 0 | 0 | ||||
| 30508108 | 17 | MF | Kew Garden Hills | NY | 03/06/2026 | 2.47000 | % | 56,244.55 | 71,677.98 | 29,277,094.02 | 29,205,416.04 | 11/06/2031 | 0 | 0 | 0 | ||||
| 30507803 | 18 | OF | Lehi | UT | 03/01/2026 | 4.37500 | % | 103,444.44 | - | 30,400,000.00 | 30,400,000.00 | 11/01/2026 | 0 | 0 | 0 | ||||
| 30507941 | 19 | A2 | RT | Concord | CA | 03/05/2026 | 2.99000 | % | 69,766.67 | - | 30,000,000.00 | 30,000,000.00 | 10/05/2031 | 0 | 0 | 0 | |||
| 30508000 | 20 | N/A | 03/06/2026 | 3.94000 | % | 49,787.14 | - | 16,246,711.00 | 16,246,711.00 | 11/06/2031 | 0 | 0 | 0 | ||||||
| 30507995 | 21 | IN | Oregon | OH | 03/06/2026 | 3.97000 | % | 25,875.58 | - | 8,380,000.00 | 8,380,000.00 | 11/06/2031 | 0 | 0 | 0 | ||||
| 30508009 | 22 | OF | Beverly Hills | CA | 03/06/2026 | 2.90100 | % | 52,346.93 | - | 23,200,000.00 | 23,200,000.00 | 11/06/2031 | 0 | 0 | 0 | ||||
| 30508065 | 23 | MU | New York | NY | 03/06/2026 | 3.91000 | % | 70,249.67 | - | 23,100,000.00 | 23,100,000.00 | 11/06/2031 | 0 | 0 | 0 | ||||
| 30508219 | 24 | OF | Sunnyvale | CA | 02/06/2026 | 2.94800 | % | 48,150.67 | - | 21,000,000.00 | 21,000,000.00 | 12/06/2031 | B | 0 | 0 | ||||
| 30508187 | 25 | N/A | New York | NY | 03/06/2026 | 3.67000 | % | 59,943.33 | - | 21,000,000.00 | 21,000,000.00 | 12/06/2031 | 0 | 0 | 0 | ||||
| 30508028 | 26 | A3 | RT | Los Angeles | CA | 03/06/2026 | 3.49000 | % | 54,288.89 | - | 20,000,000.00 | 20,000,000.00 | 10/06/2031 | 0 | 0 | 0 | |||
| 30508006 | 27 | RT | Morrow | GA | 03/06/2026 | 5.88700 | % | 91,461.09 | - | 19,975,000.00 | 19,975,000.00 | 11/06/2031 | 0 | 0 | 0 | ||||
| 30508080 | 28 | A2 | RT | Audubon | NJ | 03/06/2026 | 3.72000 | % | 50,235.80 | 37,433.04 | 17,362,602.71 | 17,325,169.67 | 08/06/2031 | 0 | 0 | 0 | |||
| 30508197 | 29 | MH | El Cajon | CA | 03/06/2026 | 3.84000 | % | 55,253.33 | - | 18,500,000.00 | 18,500,000.00 | 12/06/2031 | 0 | 0 | 0 | ||||
| 30320453 | 2 | A1 | OF | Greenwich | CT | 03/06/2026 | 3.25700 | % | 142,873.73 | - | 56,400,000.00 | 56,400,000.00 | 12/06/2031 | 0 | 0 | 0 | |||
| 30320454 | 2 | A2 | OF | Greenwich | CT | 03/06/2026 | 3.25700 | % | 95,249.16 | - | 37,600,000.00 | 37,600,000.00 | 12/06/2031 | 0 | 0 | 0 | |||
| 30508145 | 30 | MF | North Providence | RI | 03/01/2026 | 3.96800 | % | 56,323.56 | - | 18,250,000.00 | 18,250,000.00 | 12/01/2031 | 0 | 0 | 0 | ||||
| 30508188 | 31 | N/A | 03/06/2026 | 3.32000 | % | 46,480.00 | - | 18,000,000.00 | 18,000,000.00 | 12/06/2031 | 0 | 0 | 0 | ||||||
| 30508047 | 32 | N/A | 03/06/2026 | 3.91000 | % | 54,740.00 | - | 18,000,000.00 | 18,000,000.00 | 11/06/2031 | 0 | 0 | 0 | ||||||
| 30508070 | 33 | IN | Haverstraw | NY | 03/06/2026 | 3.48000 | % | 48,381.67 | - | 17,875,000.00 | 17,875,000.00 | 12/06/2031 | 0 | 0 | 0 | ||||
| 30320461 | 34 | MF | Los Angeles | CA | 03/06/2026 | 3.76000 | % | 51,470.22 | - | 17,600,000.00 | 17,600,000.00 | 11/06/2031 | 0 | 0 | 0 | ||||
| 30507953 | 35 | OF | Blue Ash | OH | 03/01/2026 | 3.87100 | % | 47,871.37 | - | 15,900,000.00 | 15,900,000.00 | 11/01/2028 | 0 | 0 | 0 | ||||
| 30508142 | 36 | MU | Jackson Heights | NY | 03/06/2026 | 3.98000 | % | 46,742.89 | - | 15,100,000.00 | 15,100,000.00 | 12/06/2031 | 0 | 0 | 0 | ||||
| 30530175 | 37 | RT | Vinton | VA | 03/06/2026 | 3.18000 | % | 32,808.77 | - | 13,265,000.00 | 13,265,000.00 | 08/06/2031 | 0 | 0 | 0 | ||||
| 30508066 | 38 | RT | Gastonia | NC | 03/06/2026 | 3.80800 | % | 38,436.58 | 23,363.13 | 12,977,538.13 | 12,954,175.00 | 12/06/2031 | 0 | 0 | 0 | ||||
| 30508049 | 39 | OF | Pomona | CA | 03/06/2026 | 3.10000 | % | 30,741.67 | - | 12,750,000.00 | 12,750,000.00 | 11/06/2031 | 0 | 0 | 0 | ||||
| Reports Available at sf.citidirect.com | v. 21.09.28 | Page 14 of 32 | © Copyright 2026 Citigroup |
| Benchmark 2021-B31 Mortgage Trust |
| Commercial Mortgage Pass Through Certificates, Series 2021-B31 |
| MORTGAGE LOAN DETAIL |
| March 17, 2026 |
| Prop | Paid | Beginning | Ending | Payment Workout Mod | |||||||||||||||
| Type | Through | Gross | Interest | Principal | Scheduled | Scheduled | Maturity | Status | Strategy Code | ||||||||||
| Loan ID | OMCR | (1) | City | State | Date | Coupon | Payment | Payment | Balance | Balance | Date | (2 | ) | (3 | ) | (4 | ) | ||
| 30320455 | 3 | A1 | OF | Plainsboro | NJ | 03/06/2026 | 2.83800 | % | 165,550.00 | - | 75,000,000.00 | 75,000,000.00 | 04/06/2031 | 0 | 0 | 0 | |||
| 30508195 | 40 | N/A | Nanuet | NY | 03/01/2026 | 3.99300 | % | 37,268.00 | - | 12,000,000.00 | 12,000,000.00 | 12/01/2031 | 0 | 0 | 0 | ||||
| 30508069 | 41 | RT | Austin | TX | 03/06/2026 | 3.83900 | % | 28,915.39 | 20,243.54 | 9,684,014.42 | 9,663,770.88 | 12/06/2031 | 0 | 0 | 0 | ||||
| 30508046 | 42 | IN | Topeka | KS | 03/06/2026 | 3.89000 | % | 29,741.21 | - | 9,830,000.00 | 9,830,000.00 | 11/06/2031 | 0 | 0 | 0 | ||||
| 30508052 | 43 | MF | Jackson | MS | 12/06/2025 | 4.32000 | % | 30,520.20 | 18,092.36 | 9,083,392.93 | 9,065,300.57 | 11/06/2028 | 2 | 98 | 0 | ||||
| 30530176 | 44 | IN | Indianapolis | IN | 03/06/2026 | 3.30900 | % | 21,104.07 | - | 8,200,000.00 | 8,200,000.00 | 12/06/2031 | 0 | 0 | 0 | ||||
| 30530172 | 45 | RT | Mason | OH | 03/06/2026 | 3.85800 | % | 23,405.20 | - | 7,800,000.00 | 7,800,000.00 | 11/06/2031 | 0 | 0 | 8 | ||||
| 30508007 | 46 | OF | West Palm Beach | FL | 03/06/2026 | 3.35000 | % | 19,671.94 | - | 7,550,000.00 | 7,550,000.00 | 11/06/2031 | 0 | 0 | 0 | ||||
| 30530177 | 47 | OF | Houston | TX | 03/06/2026 | 3.89600 | % | 20,768.37 | 13,505.25 | 6,853,746.50 | 6,840,241.25 | 12/06/2031 | 0 | 0 | 0 | ||||
| 30508144 | 48 | MF | Ann Arbor | MI | 03/01/2026 | 3.65000 | % | 19,872.22 | - | 7,000,000.00 | 7,000,000.00 | 12/01/2031 | 0 | 0 | 0 | ||||
| 30508051 | 49 | MF | Orange | NJ | 03/06/2026 | 3.71000 | % | 20,198.89 | - | 7,000,000.00 | 7,000,000.00 | 11/06/2031 | 0 | 0 | 0 | ||||
| 30507836 | 4 | A5 | OF | Cambridge | MA | 03/05/2026 | 2.69250 | % | 73,295.83 | - | 35,000,000.00 | 35,000,000.00 | 10/05/2031 | 0 | 0 | 0 | |||
| 30507837 | 4 | A6 | OF | Cambridge | MA | 03/05/2026 | 2.69250 | % | 58,950.79 | - | 28,150,000.00 | 28,150,000.00 | 10/05/2031 | 0 | 0 | 0 | |||
| 30508185 | 5 | N/A | 03/06/2026 | 3.24000 | % | 147,420.00 | - | 58,500,000.00 | 58,500,000.00 | 12/06/2031 | 0 | 0 | 0 | ||||||
| 30508158 | 50 | SS | TN | 03/06/2026 | 3.51000 | % | 18,181.80 | - | 6,660,000.00 | 6,660,000.00 | 12/06/2031 | 0 | 0 | 0 | |||||
| 30508073 | 51 | IN | Yonkers | NY | 03/06/2026 | 3.58000 | % | 17,983.06 | 11,949.41 | 6,458,400.83 | 6,446,451.42 | 12/06/2031 | 0 | 0 | 0 | ||||
| 30508106 | 52 | RT | Springfield | VT | 03/06/2026 | 3.60000 | % | 16,694.42 | 12,857.53 | 5,962,293.32 | 5,949,435.79 | 11/06/2031 | 0 | 0 | 0 | ||||
| 30508192 | 53 | MF | Southfield | MI | 03/06/2026 | 3.73000 | % | 16,536.33 | - | 5,700,000.00 | 5,700,000.00 | 12/06/2031 | 0 | 0 | 0 | ||||
| 30508218 | 54 | MF | Brooklyn | NY | 03/06/2026 | 3.64000 | % | 11,324.44 | - | 4,000,000.00 | 4,000,000.00 | 12/06/2031 | 0 | 0 | 0 | ||||
| 30508010 | 55 | OF | Melbourne | FL | 03/06/2026 | 3.98000 | % | 11,144.00 | - | 3,600,000.00 | 3,600,000.00 | 11/06/2031 | 0 | 0 | 0 | ||||
| 30320462 | 56 | MF | Los Angeles | CA | 03/06/2026 | 4.10000 | % | 7,653.33 | - | 2,400,000.00 | 2,400,000.00 | 11/06/2031 | 0 | 0 | 0 | ||||
| 30508110 | 57 | RT | Newnan | GA | 03/06/2026 | 4.43000 | % | 5,512.89 | - | 1,600,000.00 | 1,600,000.00 | 11/06/2031 | 0 | 0 | 0 | ||||
| 30508191 | 6 | OF | TX | 03/06/2026 | 3.80000 | % | 158,011.62 | 112,243.64 | 53,462,578.22 | 53,350,334.58 | 12/06/2031 | 0 | 8 | 0 | |||||
| 30530169 | 7 | A1 | RT | Tucson | AZ | 03/06/2026 | 3.36100 | % | 143,776.11 | - | 55,000,000.00 | 55,000,000.00 | 10/06/2031 | 0 | 0 | 0 | |||
| 30508159 | 8 | A1 | MF | FL | 03/06/2026 | 3.97000 | % | 148,213.33 | - | 48,000,000.00 | 48,000,000.00 | 12/06/2031 | 0 | 0 | 0 | ||||
| 30508147 | 9 | MU | New York | NY | 03/01/2026 | 3.99000 | % | 141,512.00 | - | 45,600,000.00 | 45,600,000.00 | 12/01/2031 | 0 | 0 | 0 | ||||
| 30320449 | A-1-2 | MU | Cambridge | MA | 03/06/2026 | 2.79200 | % | 152,008.89 | - | 70,000,000.00 | 70,000,000.00 | 11/06/2036 | 0 | 0 | 0 | ||||
| 30320450 | A-1-4 | MU | Cambridge | MA | 03/06/2026 | 2.79200 | % | 108,577.78 | - | 50,000,000.00 | 50,000,000.00 | 11/06/2036 | 0 | 0 | 0 | ||||
| 30320451 | A-1-9 | MU | Cambridge | MA | 03/06/2026 | 2.79200 | % | 9,036.33 | - | 4,161,224.43 | 4,161,224.43 | 11/06/2036 | 0 | 0 | 0 | ||||
| 30320452 | A-3-3 | MU | Cambridge | MA | 03/06/2026 | 2.79200 | % | 52,073.02 | - | 23,979,591.86 | 23,979,591.86 | 11/06/2036 | 0 | 0 | 0 | ||||
| Total | Count = 62 | 3,919,449.27 | 459,026.09 | 1,479,543,204.82 | 1,479,084,178.73 | ||||||||||||||
| Reports Available at sf.citidirect.com | v. 21.09.28 | Page 15 of 32 | © Copyright 2026 Citigroup |
| Benchmark 2021-B31 Mortgage Trust |
| Commercial Mortgage Pass Through Certificates, Series 2021-B31 |
| NOI DETAIL |
| March 17, 2026 |
| Property | Ending | Preceding | Most | Most Recent | Most Recent | |||||
| Type | Scheduled | Fiscal | Recent | Financial As of | Financial Asof | |||||
| Loan ID | OMCR | (1) | City | State | Balance | Year NOI | NOI | Start Date | End Date | |
| 30508068 | 10 | N/A | 40,543,016.26 | 4,460,028.17 | 3,973,862.97 | Not Available | Not Available | |||
| 30508200 | 11 | A1 | MF | Harrison | NJ | 43,000,000.00 | 4,931,552.12 | 4,750,597.98 | 01/01/2025 | 09/30/2025 |
| 30508148 | 12 | MF | IL | 42,500,000.00 | 3,765,884.30 | 4,195,051.69 | 01/01/2025 | 09/30/2025 | ||
| 30507887 | 13 | A1 | IN | Town of Burrillville | RI | 40,000,000.00 | 5,683,544.01 | 5,785,858.14 | 01/01/2025 | 12/31/2025 |
| 30508193 | 14 | A1 | RT | Tualatin | OR | 40,000,000.00 | 7,733,224.95 | 7,416,156.66 | 01/01/2025 | 12/31/2025 |
| 30320459 | 15 | A1 | IN | 40,000,000.00 | 5,505,997.15 | 5,661,451.91 | 01/01/2025 | 09/30/2025 | ||
| 30508186 | 16 | MF | Fort Lee | NJ | 32,968,339.98 | 1,965,432.04 | 1,672,007.04 | Not Available | Not Available | |
| 30508108 | 17 | MF | Kew Garden Hills | NY | 29,205,416.04 | 5,565,669.34 | 5,394,031.27 | 01/01/2025 | 12/31/2025 | |
| 30507803 | 18 | OF | Lehi | UT | 30,400,000.00 | 3,372,874.56 | 3,570,559.37 | 01/01/2025 | 12/31/2025 | |
| 30507941 | 19 | A2 | RT | Concord | CA | 30,000,000.00 | 10,680,479.23 | 11,769,631.41 | 01/01/2025 | 12/31/2025 |
| 30508000 | 20 | N/A | 16,246,711.00 | 1,572,137.74 | 2,093,940.30 | 01/01/2025 | 09/30/2025 | |||
| 30507995 | 21 | IN | Oregon | OH | 8,380,000.00 | 749,937.00 | 752,262.37 | 01/01/2025 | 12/31/2025 | |
| 30508009 | 22 | OF | Beverly Hills | CA | 23,200,000.00 | 2,345,987.23 | 2,258,640.90 | 01/01/2025 | 12/31/2025 | |
| 30508065 | 23 | MU | New York | NY | 23,100,000.00 | 2,160,550.13 | 2,372,862.33 | 01/01/2025 | 09/30/2025 | |
| 30508219 | 24 | OF | Sunnyvale | CA | 21,000,000.00 | 2,489,380.81 | 2,806,037.43 | 01/01/2025 | 12/31/2025 | |
| 30508187 | 25 | N/A | New York | NY | 21,000,000.00 | 1,313,215.60 | 1,166,611.28 | 01/01/2025 | 06/30/2025 | |
| 30508028 | 26 | A3 | RT | Los Angeles | CA | 20,000,000.00 | 7,279,517.15 | 2,022,604.84 | 01/01/2025 | 03/31/2025 |
| 30508006 | 27 | RT | Morrow | GA | 19,975,000.00 | 7,761,302.10 | 9,371,569.69 | Not Available | Not Available | |
| 30508080 | 28 | A2 | RT | Audubon | NJ | 17,325,169.67 | 3,612,214.09 | 4,063,580.32 | 01/01/2025 | 12/31/2025 |
| 30508197 | 29 | MH | El Cajon | CA | 18,500,000.00 | 1,632,487.20 | 1,594,621.53 | 01/01/2025 | 12/31/2025 | |
| 30320453 | 2 | A1 | OF | Greenwich | CT | 56,400,000.00 | 8,444,399.31 | 8,678,482.35 | 07/01/2024 | 06/30/2025 |
| 30320454 | 2 | A2 | OF | Greenwich | CT | 37,600,000.00 | 8,444,399.31 | 8,678,482.35 | 07/01/2024 | 06/30/2025 |
| 30508145 | 30 | MF | North Providence | RI | 18,250,000.00 | 1,572,750.51 | 1,712,723.99 | 01/01/2025 | 12/31/2025 | |
| 30508188 | 31 | N/A | 18,000,000.00 | 1,601,010.14 | 1,533,497.05 | 10/01/2024 | 09/30/2025 | |||
| 30508047 | 32 | N/A | 18,000,000.00 | 1,716,307.46 | 306,170.68 | 01/01/2025 | 12/31/2025 | |||
| 30508070 | 33 | IN | Haverstraw | NY | 17,875,000.00 | 1,927,946.16 | 1,817,184.54 | 01/01/2025 | 12/31/2025 | |
| 30320461 | 34 | MF | Los Angeles | CA | 17,600,000.00 | 1,237,711.24 | 1,303,701.03 | 01/01/2025 | 09/30/2025 | |
| 30507953 | 35 | OF | Blue Ash | OH | 15,900,000.00 | 1,707,308.41 | 1,858,203.18 | 01/01/2025 | 12/31/2025 | |
| 30508142 | 36 | MU | Jackson Heights | NY | 15,100,000.00 | 1,189,211.11 | 1,238,086.81 | 01/01/2025 | 12/31/2025 | |
| 30530175 | 37 | RT | Vinton | VA | 13,265,000.00 | 1,402,434.88 | 1,430,141.05 | 01/01/2025 | 09/30/2025 | |
| 30508066 | 38 | RT | Gastonia | NC | 12,954,175.00 | 1,854,536.66 | 2,029,447.31 | 01/01/2025 | 12/31/2025 | |
| 30508049 | 39 | OF | Pomona | CA | 12,750,000.00 | 2,014,080.57 | 2,211,390.67 | 01/01/2025 | 09/30/2025 | |
| Reports Available at sf.citidirect.com | v. 21.09.28 | Page 16 of 32 | © Copyright 2026 Citigroup | |||||||
| Benchmark 2021-B31 Mortgage Trust |
| Commercial Mortgage Pass Through Certificates, Series 2021-B31 |
| NOI DETAIL |
| March 17, 2026 |
| Property | Ending | Preceding | Most | Most Recent | Most Recent | |||||
| Type | Scheduled | Fiscal | Recent | Financial As of | Financial Asof | |||||
| Loan ID | OMCR | (1) | City | State | Balance | Year NOI | NOI | Start Date | End Date | |
| 30320455 | 3 | A1 | OF | Plainsboro | NJ | 75,000,000.00 | 20,862,255.22 | 21,887,245.20 | 10/01/2024 | 09/30/2025 |
| 30508195 | 40 | N/A | Nanuet | NY | 12,000,000.00 | 304,258.03 | 1,112,518.95 | 01/01/2025 | 09/30/2025 | |
| 30508069 | 41 | RT | Austin | TX | 9,663,770.88 | 1,150,731.14 | 1,169,937.61 | 01/01/2025 | 12/31/2025 | |
| 30508046 | 42 | IN | Topeka | KS | 9,830,000.00 | 742,931.28 | 757,412.40 | 01/01/2025 | 12/31/2025 | |
| 30508052 | 43 | MF | Jackson | MS | 9,065,300.57 | 901,428.41 | 901,428.41 | Not Available | Not Available | |
| 30530176 | 44 | IN | Indianapolis | IN | 8,200,000.00 | 1,368,637.52 | 1,484,392.18 | 01/01/2025 | 12/31/2025 | |
| 30530172 | 45 | RT | Mason | OH | 7,800,000.00 | 766,070.42 | 864,853.27 | 01/01/2025 | 09/30/2025 | |
| 30508007 | 46 | OF | West Palm Beach | FL | 7,550,000.00 | 719,982.71 | 753,767.64 | 01/01/2025 | 09/30/2025 | |
| 30530177 | 47 | OF | Houston | TX | 6,840,241.25 | 791,323.75 | 873,543.37 | 10/01/2024 | 09/30/2025 | |
| 30508144 | 48 | MF | Ann Arbor | MI | 7,000,000.00 | 843,586.18 | 971,152.10 | 01/01/2025 | 12/31/2025 | |
| 30508051 | 49 | MF | Orange | NJ | 7,000,000.00 | 515,939.50 | 432,706.54 | Not Available | Not Available | |
| 30507836 | 4 | A5 | OF | Cambridge | MA | 35,000,000.00 | 31,617,475.26 | 19,252,682.36 | 01/01/2025 | 12/31/2025 |
| 30507837 | 4 | A6 | OF | Cambridge | MA | 28,150,000.00 | 31,617,475.26 | 19,252,682.36 | 01/01/2025 | 12/31/2025 |
| 30508185 | 5 | N/A | 58,500,000.00 | 7,141,197.09 | 7,115,631.12 | 01/01/2025 | 06/30/2025 | |||
| 30508158 | 50 | SS | TN | 6,660,000.00 | 643,331.66 | 607,819.60 | 10/01/2024 | 09/30/2025 | ||
| 30508073 | 51 | IN | Yonkers | NY | 6,446,451.42 | 534,623.19 | 579,836.89 | Not Available | Not Available | |
| 30508106 | 52 | RT | Springfield | VT | 5,949,435.79 | 512,374.87 | 599,079.94 | 01/01/2025 | 09/30/2025 | |
| 30508192 | 53 | MF | Southfield | MI | 5,700,000.00 | 462,632.62 | 522,672.19 | 01/01/2025 | 12/31/2025 | |
| 30508218 | 54 | MF | Brooklyn | NY | 4,000,000.00 | 307,702.69 | 333,901.05 | 01/01/2025 | 12/31/2025 | |
| 30508010 | 55 | OF | Melbourne | FL | 3,600,000.00 | 322,748.62 | 328,724.82 | 01/01/2025 | 12/31/2025 | |
| 30320462 | 56 | MF | Los Angeles | CA | 2,400,000.00 | 197,818.47 | 219,471.62 | 01/01/2025 | 12/31/2025 | |
| 30508110 | 57 | RT | Newnan | GA | 1,600,000.00 | 149,593.92 | 149,593.92 | 01/01/2025 | 06/30/2025 | |
| 30508191 | 6 | OF | TX | 53,350,334.58 | 4,859,837.51 | 5,511,536.47 | 01/01/2025 | 09/30/2025 | ||
| 30530169 | 7 | A1 | RT | Tucson | AZ | 55,000,000.00 | 10,198,300.81 | 11,668,671.16 | 01/01/2025 | 12/31/2025 |
| 30508159 | 8 | A1 | MF | FL | 48,000,000.00 | 8,127,613.87 | 7,747,786.61 | 01/01/2025 | 12/31/2025 | |
| 30508147 | 9 | MU | New York | NY | 45,600,000.00 | 3,103,846.02 | 3,053,470.43 | 01/01/2025 | 09/30/2025 | |
| 30320449 | A-1-2 | MU | Cambridge | MA | 70,000,000.00 | 78,866,375.00 | 81,030,688.00 | 01/01/2025 | 09/30/2025 | |
| 30320450 | A-1-4 | MU | Cambridge | MA | 50,000,000.00 | 78,866,375.00 | 81,030,688.00 | 01/01/2025 | 09/30/2025 | |
| 30320451 | A-1-9 | MU | Cambridge | MA | 4,161,224.43 | 78,866,375.00 | 81,030,688.00 | 01/01/2025 | 09/30/2025 | |
| 30320452 | A-3-3 | MU | Cambridge | MA | 23,979,591.86 | 78,866,375.00 | 81,030,688.00 | 01/01/2025 | 09/30/2025 | |
| Total | Count = 62 | 1,479,084,178.73 | 561,922,726.70 | 547,764,720.65 | ||||||
| Reports Available at sf.citidirect.com | v. 21.09.28 | Page 17 of 32 | © Copyright 2026 Citigroup |
| Benchmark 2021-B31 Mortgage Trust |
| Commercial Mortgage Pass Through Certificates, Series 2021-B31 |
| DELINQUENCY LOAN DETAIL |
| March 17, 2026 |
| Actual | Paid | Current P&I | Total P&I | Cumulative | Other Expense | Payment Workout | Most Recent | |||||||||
| Principal | Through | Advances | Advances | Accrued Unpaid | Advances | Status | Strategy | Special Serv | Foreclosure | Bankruptcy | REO | |||||
| Loan ID | OMCR | Balance | Date | (Net of ASER) | Outstanding | Interest Advances | Outstanding | (2 | ) | (3 | ) | Transfer Date | Date | Date | Date | |
| 30508148 | 12 | 42,500,000.00 | 02/06/2026 | 124,867.36 | 124,867.36 | 1,992.30 | 55,821.43 | B | 98 | 03/15/2024 | ||||||
| 30507887 | 13 | A1 | 40,000,000.00 | 02/06/2026 | 115,344.44 | 115,344.44 | - | - | B | 0 | ||||||
| 30508219 | 24 | 21,000,000.00 | 02/06/2026 | 48,109.84 | 48,109.84 | - | - | B | 0 | |||||||
| 30508052 | 43 | 9,112,873.00 | 12/06/2025 | 48,594.90 | 145,780.81 | 2,332.15 | - | 2 | 98 | 12/10/2025 | ||||||
| Total | Count = 4 | 112,612,873.00 | 336,916.54 | 434,102.45 | 4,324.45 | 55,821.43 | ||||||||||
| Reports Available at sf.citidirect.com | v. 21.09.28 | Page 18 of 32 | © Copyright 2026 Citigroup |
| Benchmark 2021-B31 Mortgage Trust |
| Commercial Mortgage Pass Through Certificates, Series 2021-B31 |
| COLLATERAL PERFORMANCE - DELINQUENCY AND LOAN STATUS DETAIL |
| – |
| March 17, 2026 |
| Delinquent | |||||||||||||||||||||||||||||
| (Does not include loans in Bankruptcy, Foreclosure, or REO) | |||||||||||||||||||||||||||||
| 30 | Day | 60 | Day | 90 | Day | 120 | + Day | Bankruptcy | Foreclosure | REO | |||||||||||||||||||
| Distribution | |||||||||||||||||||||||||||||
| Date | Count | Balance | Count | Balance | Count | Balance | Count | Balance | Count | Balance | Count | Balance | Count | Balance | |||||||||||||||
| 0 | 0 | 1 | 9,065,301 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | ||||||||||||||||
| 03/17/2026 | |||||||||||||||||||||||||||||
| 0.0 | % | 0.0 | % | 1.6 | % | 0.0 | % | 0.0 | % | 0.0 | % | 0.0 | % | 0.0 | % | 0.0 | % | 0.0 | % | 0.0 | % | 0.0 | % | 0.0 | % | 0.0 | % | ||
| 1 | 9,083,393 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | ||||||||||||||||
| 02/18/2026 | |||||||||||||||||||||||||||||
| 1.6 | % | 0.0 | % | 0.0 | % | 0.0 | % | 0.0 | % | 0.0 | % | 0.0 | % | 0.0 | % | 0.0 | % | 0.0 | % | 0.0 | % | 0.0 | % | 0.0 | % | 0.0 | % | ||
| 0 | 0 | 1 | 9,098,160 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | ||||||||||||||||
| 01/16/2026 | |||||||||||||||||||||||||||||
| 0.0 | % | 0.0 | % | 1.6 | % | 0.0 | % | 0.0 | % | 0.0 | % | 0.0 | % | 0.0 | % | 0.0 | % | 0.0 | % | 0.0 | % | 0.0 | % | 0.0 | % | 0.0 | % | ||
| 1 | 75,000,000 | 1 | 9,112,873 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | ||||||||||||||||
| 12/17/2025 | |||||||||||||||||||||||||||||
| 1.6 | % | 0.0 | % | 1.6 | % | 0.0 | % | 0.0 | % | 0.0 | % | 0.0 | % | 0.0 | % | 0.0 | % | 0.0 | % | 0.0 | % | 0.0 | % | 0.0 | % | 0.0 | % | ||
| 2 | 84,128,623 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | ||||||||||||||||
| 11/18/2025 | |||||||||||||||||||||||||||||
| 3.2 | % | 0.0 | % | 0.0 | % | 0.0 | % | 0.0 | % | 0.0 | % | 0.0 | % | 0.0 | % | 0.0 | % | 0.0 | % | 0.0 | % | 0.0 | % | 0.0 | % | 0.0 | % | ||
| 1 | 75,000,000 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | ||||||||||||||||
| 10/20/2025 | |||||||||||||||||||||||||||||
| 1.6 | % | 0.0 | % | 0.0 | % | 0.0 | % | 0.0 | % | 0.0 | % | 0.0 | % | 0.0 | % | 0.0 | % | 0.0 | % | 0.0 | % | 0.0 | % | 0.0 | % | 0.0 | % | ||
| 1 | 75,000,000 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | ||||||||||||||||
| 09/17/2025 | |||||||||||||||||||||||||||||
| 1.6 | % | 0.0 | % | 0.0 | % | 0.0 | % | 0.0 | % | 0.0 | % | 0.0 | % | 0.0 | % | 0.0 | % | 0.0 | % | 0.0 | % | 0.0 | % | 0.0 | % | 0.0 | % | ||
| 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | ||||||||||||||||
| 08/15/2025 | |||||||||||||||||||||||||||||
| 0.0 | % | 0.0 | % | 0.0 | % | 0.0 | % | 0.0 | % | 0.0 | % | 0.0 | % | 0.0 | % | 0.0 | % | 0.0 | % | 0.0 | % | 0.0 | % | 0.0 | % | 0.0 | % | ||
| 0 | 0 | 0 | 0 | 1 | 75,000,000 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | ||||||||||||||||
| 07/17/2025 | |||||||||||||||||||||||||||||
| 0.0 | % | 0.0 | % | 0.0 | % | 0.0 | % | 1.6 | % | 0.0 | % | 0.0 | % | 0.0 | % | 0.0 | % | 0.0 | % | 0.0 | % | 0.0 | % | 0.0 | % | 0.0 | % | ||
| 0 | 0 | 1 | 75,000,000 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | ||||||||||||||||
| 06/17/2025 | |||||||||||||||||||||||||||||
| 0.0 | % | 0.0 | % | 1.6 | % | 0.0 | % | 0.0 | % | 0.0 | % | 0.0 | % | 0.0 | % | 0.0 | % | 0.0 | % | 0.0 | % | 0.0 | % | 0.0 | % | 0.0 | % | ||
| 0 | 0 | 1 | 75,000,000 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | ||||||||||||||||
| 05/16/2025 | |||||||||||||||||||||||||||||
| 0.0 | % | 0.0 | % | 1.6 | % | 0.0 | % | 0.0 | % | 0.0 | % | 0.0 | % | 0.0 | % | 0.0 | % | 0.0 | % | 0.0 | % | 0.0 | % | 0.0 | % | 0.0 | % | ||
| 1 | 75,000,000 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | ||||||||||||||||
| 04/17/2025 | |||||||||||||||||||||||||||||
| 1.6 | % | 0.0 | % | 0.0 | % | 0.0 | % | 0.0 | % | 0.0 | % | 0.0 | % | 0.0 | % | 0.0 | % | 0.0 | % | 0.0 | % | 0.0 | % | 0.0 | % | 0.0 | % | ||
| Reports Available at sf.citidirect.com | v. 21.09.28 | Page 19 of 32 | © Copyright 2026 Citigroup |
| Benchmark 2021-B31 Mortgage Trust |
| Commercial Mortgage Pass Through Certificates, Series 2021-B31 |
| APPRAISAL REDUCTION DETAIL |
| March 17, 2026 |
| Beginning | Ending | Appraisal | Appraisal | Most Recent | Cumulative | |||
| Loan ID | OMCR | Property Name | Scheduled Balance | Scheduled Balance | Reduction Amount | Reduction Date | ASER Amount | ASER Amount |
| No Loans with Appraisal Reduction Activity. | ||||||||
| Reports Available at sf.citidirect.com | v. 21.09.28 | Page 20 of 32 | © Copyright 2026 Citigroup |
| Benchmark 2021-B31 Mortgage Trust |
| Commercial Mortgage Pass Through Certificates, Series 2021-B31 |
| HISTORICAL APPRAISAL REDUCTION DETAIL |
| March 17, 2026 |
| Distribution | Beginning | Ending | Appraisal | Appraisal | Most Recent | Cumulative | |||
| Date | Loan ID | OMCR | Property Name | Scheduled Balance | Scheduled Balance | Reduction Amount | Reduction Date | ASER Amount | ASER Amount |
| No Loans with Appraisal Reduction Activity. | |||||||||
| Reports Available at sf.citidirect.com | v. 21.09.28 | Page 21 of 32 | © Copyright 2026 Citigroup |
| Benchmark 2021-B31 Mortgage Trust |
| Commercial Mortgage Pass Through Certificates, Series 2021-B31 |
| LOAN MODIFICATION DETAIL |
| March 17, 2026 |
| Modification | Modification | |||
| Loan ID | OMCR | Property Name | Date | Code (4) |
| 30530172 | 45 | Shoppes of Mason | 04/09/2025 | 8 |
| Reports Available at sf.citidirect.com | v. 21.09.28 | Page 22 of 32 | © Copyright 2026 Citigroup |
| Benchmark 2021-B31 Mortgage Trust |
| Commercial Mortgage Pass Through Certificates, Series 2021-B31 |
| HISTORICAL LOAN MODIFICATION DETAIL |
| March 17, 2026 |
| Distribution | Modification | Modification | |||
| Date | Loan ID | OMCR | Property Name | Date | Code (4) |
| 03/17/2026 | 30530172 | 45 | Shoppes of Mason | 04/09/2025 | 8 |
| 02/18/2026 | 30530172 | 45 | Shoppes of Mason | 04/09/2025 | 8 |
| 01/16/2026 | 30530172 | 45 | Shoppes of Mason | 04/09/2025 | 8 |
| 12/17/2025 | 30530172 | 45 | Shoppes of Mason | 04/09/2025 | 8 |
| 11/18/2025 | 30530172 | 45 | Shoppes of Mason | 04/09/2025 | 8 |
| 10/20/2025 | 30530172 | 45 | Shoppes of Mason | 04/09/2025 | 8 |
| 09/17/2025 | 30530172 | 45 | Shoppes of Mason | 04/09/2025 | 8 |
| 08/15/2025 | 30530172 | 45 | Shoppes of Mason | 04/09/2025 | 8 |
| Reports Available at sf.citidirect.com | v. 21.09.28 | Page 23 of 32 | © Copyright 2026 Citigroup |
| Benchmark 2021-B31 Mortgage Trust |
| Commercial Mortgage Pass Through Certificates, Series 2021-B31 |
| SPECIALLY SERVICED LOAN DETAIL |
| March 17, 2026 |
| Special Servicing | Ending | Ending | Most | Most Recent | Most Recent | Most Recent | |||
| Workout | Fee Amount | Scheduled | Actual | Recent | Valuation | Special Servicer | Master Servicer | ||
| Loan ID | OMCR | Strategy (3) | Plus Adjustments | Balance | Balance | Value | Date | Transfer Date | Return Date |
| 30508052 | 43 | 98 | 5,000.00 | 9,065,300.57 | 9,112,873.00 | 15,300,000.00 | 08/27/2021 | 12/10/2025 | |
| 30508148 | 12 | 98 | 8,263.89 | 42,500,000.00 | 42,500,000.00 | 63,800,000.00 | 10/14/2021 | 03/15/2024 | |
| Total | Count = 2 | 13,263.89 | 51,565,300.57 | 51,612,873.00 | 79,100,000.00 | ||||
| Reports Available at sf.citidirect.com | v. 21.09.28 | Page 24 of 32 | © Copyright 2026 Citigroup |
| Benchmark 2021-B31 Mortgage Trust |
| Commercial Mortgage Pass Through Certificates, Series 2021-B31 |
| HISTORICAL SPECIALLY SERVICED LOANS |
| March 17, 2026 |
| Special Servicing | Ending | Ending | Most | Most Recent | Most Recent | Most Recent | ||||
| Distribution | Workout | Fee Amount | Scheduled | Actual | Recent | Valuation | Special Servicer | Master Servicer | ||
| Date | Loan ID | OMCR | Strategy (3) | Plus Adjustments | Balance | Balance | Value | Date | Transfer Date | Return Date |
| 03/17/2026 | 30508052 | 43 | 98 | 5,000.00 | 9,065,300.57 | 9,112,873.00 | 15,300,000.00 | 08/27/2021 | 12/10/2025 | |
| 02/18/2026 | 30508052 | 43 | 98 | 5,000.00 | 9,083,392.93 | 9,112,873.00 | 15,300,000.00 | 08/27/2021 | 12/10/2025 | |
| 01/16/2026 | 30508052 | 43 | 98 | 5,000.00 | 9,098,160.33 | 9,143,222.29 | 15,300,000.00 | 08/27/2021 | 12/10/2025 | |
| 03/17/2026 | 30508148 | 12 | 98 | 8,263.89 | 42,500,000.00 | 42,500,000.00 | 63,800,000.00 | 10/14/2021 | 03/15/2024 | |
| 02/18/2026 | 30508148 | 12 | 98 | 9,149.31 | 42,500,000.00 | 42,500,000.00 | 63,800,000.00 | 10/14/2021 | 03/15/2024 | |
| 01/16/2026 | 30508148 | 12 | 98 | 9,149.31 | 42,500,000.00 | 42,500,000.00 | 63,800,000.00 | 10/14/2021 | 03/15/2024 | |
| 12/17/2025 | 30508148 | 12 | 98 | 8,854.17 | 42,500,000.00 | 42,500,000.00 | 63,800,000.00 | 10/14/2021 | 03/15/2024 | |
| 11/18/2025 | 30508148 | 12 | 98 | 9,149.31 | 42,500,000.00 | 42,500,000.00 | 63,800,000.00 | 10/14/2021 | 03/15/2024 | |
| 10/20/2025 | 30508148 | 12 | 98 | 8,854.17 | 42,500,000.00 | 42,500,000.00 | 63,800,000.00 | 10/14/2021 | 03/15/2024 | |
| 09/17/2025 | 30508148 | 12 | 98 | 9,149.31 | 42,500,000.00 | 42,500,000.00 | 63,800,000.00 | 10/14/2021 | 03/15/2024 | |
| 08/15/2025 | 30508148 | 12 | 98 | 9,149.31 | 42,500,000.00 | 42,500,000.00 | 63,800,000.00 | 10/14/2021 | 03/15/2024 | |
| 07/17/2025 | 30508148 | 12 | 98 | 8,854.17 | 42,500,000.00 | 42,500,000.00 | 63,800,000.00 | 10/14/2021 | 03/15/2024 | |
| 06/17/2025 | 30508148 | 12 | 98 | 9,149.31 | 42,500,000.00 | 42,500,000.00 | 63,800,000.00 | 10/14/2021 | 03/15/2024 | |
| 05/16/2025 | 30508148 | 12 | 9 | 8,854.17 | 42,500,000.00 | 42,500,000.00 | 63,800,000.00 | 10/14/2021 | 03/15/2024 | |
| 04/17/2025 | 30508148 | 12 | 9 | 9,149.31 | 42,500,000.00 | 42,500,000.00 | 63,800,000.00 | 10/14/2021 | 03/15/2024 | |
| 03/17/2025 | 30508148 | 12 | 9 | 8,263.89 | 42,500,000.00 | 42,500,000.00 | 63,800,000.00 | 10/14/2021 | 03/15/2024 | |
| 02/18/2025 | 30508148 | 12 | 9 | 9,149.31 | 42,500,000.00 | 42,500,000.00 | 63,800,000.00 | 10/14/2021 | 03/15/2024 | |
| 01/17/2025 | 30508148 | 12 | 9 | 9,149.31 | 42,500,000.00 | 42,500,000.00 | 63,800,000.00 | 10/14/2021 | 03/15/2024 | |
| 12/17/2024 | 30508148 | 12 | 98 | 8,854.17 | 42,500,000.00 | 42,500,000.00 | 63,800,000.00 | 10/14/2021 | 03/15/2024 | |
| 11/18/2024 | 30508148 | 12 | 98 | 9,149.31 | 42,500,000.00 | 42,500,000.00 | 63,800,000.00 | 10/14/2021 | 03/15/2024 | |
| 10/18/2024 | 30508148 | 12 | 98 | 8,854.17 | 42,500,000.00 | 42,500,000.00 | 63,800,000.00 | 10/14/2021 | 03/15/2024 | |
| 09/17/2024 | 30508148 | 12 | 98 | 9,149.31 | 42,500,000.00 | 42,500,000.00 | 63,800,000.00 | 10/14/2021 | 03/15/2024 | |
| 08/16/2024 | 30508148 | 12 | 98 | 9,149.31 | 42,500,000.00 | 42,500,000.00 | 63,800,000.00 | 10/14/2021 | 03/15/2024 | |
| 07/17/2024 | 30508148 | 12 | 98 | 8,854.17 | 42,500,000.00 | 42,500,000.00 | 63,800,000.00 | 10/14/2021 | 03/15/2024 | |
| 06/17/2024 | 30508148 | 12 | 98 | 9,149.31 | 42,500,000.00 | 42,500,000.00 | 63,800,000.00 | 10/14/2021 | 03/15/2024 | |
| 05/17/2024 | 30508148 | 12 | 98 | 8,854.17 | 42,500,000.00 | 42,500,000.00 | 63,800,000.00 | 10/14/2021 | 03/15/2024 | |
| 04/17/2024 | 30508148 | 12 | 98 | 6,493.06 | 42,500,000.00 | 42,500,000.00 | 63,800,000.00 | 10/14/2021 | 03/15/2024 | |
| 11/18/2024 | 30508191 | 6 | 8 | 11,838.31 | 54,900,532.35 | 54,900,532.35 | 85,670,000.00 | 06/23/2023 | 11/06/2024 | |
| 10/18/2024 | 30508191 | 6 | 98 | 11,476.39 | 54,990,845.34 | 54,990,845.34 | 85,670,000.00 | 06/23/2023 | ||
| 09/17/2024 | 30508191 | 6 | 98 | 11,878.25 | 55,086,659.51 | 55,086,659.51 | 85,670,000.00 | 06/23/2023 | ||
| 08/16/2024 | 30508191 | 6 | 98 | 11,897.49 | 55,176,365.44 | 55,176,365.44 | 85,670,000.00 | 06/23/2023 | ||
| 07/17/2024 | 30508191 | 6 | 98 | 11,533.48 | 55,265,778.79 | 55,265,778.79 | 85,670,000.00 | 06/23/2023 | ||
| Reports Available at sf.citidirect.com | v. 21.09.28 | Page 25 of 32 | © Copyright 2026 Citigroup |
| Benchmark 2021-B31 Mortgage Trust |
| Commercial Mortgage Pass Through Certificates, Series 2021-B31 |
| HISTORICAL SPECIALLY SERVICED LOANS |
| March 17, 2026 |
| Special Servicing | Ending | Ending | Most | Most Recent | Most Recent | Most Recent | ||||
| Distribution | Workout | Fee Amount | Scheduled | Actual | Recent | Valuation | Special Servicer | Master Servicer | ||
| Date | Loan ID | OMCR | Strategy (3) | Plus Adjustments | Balance | Balance | Value | Date | Transfer Date | Return Date |
| 06/17/2024 | 30508191 | 6 | 98 | 11,937.05 | 55,360,725.09 | 55,360,725.09 | 85,670,000.00 | 06/23/2023 | ||
| 05/17/2024 | 30508191 | 6 | 98 | 11,571.65 | 55,449,537.14 | 55,449,537.14 | 85,670,000.00 | 06/23/2023 | ||
| 04/17/2024 | 30508191 | 6 | 98 | 11,976.36 | 55,543,903.37 | 55,543,903.37 | 85,670,000.00 | 06/23/2023 | ||
| 03/15/2024 | 30508191 | 6 | 98 | 11,223.76 | 55,632,117.98 | 55,632,117.98 | 85,670,000.00 | 06/23/2023 | ||
| 02/16/2024 | 30508191 | 6 | 98 | 12,016.67 | 55,731,772.09 | 55,819,373.95 | 85,670,000.00 | 06/23/2023 | ||
| 01/18/2024 | 30508191 | 6 | 98 | 12,035.47 | 55,819,373.95 | 55,819,373.95 | 85,670,000.00 | 06/23/2023 | ||
| 12/15/2023 | 30508191 | 6 | 98 | 11,666.59 | 55,906,690.10 | 55,906,690.10 | 85,670,000.00 | 06/23/2023 | ||
| 11/17/2023 | 30508191 | 6 | 98 | 12,074.14 | 55,999,613.25 | 55,999,613.25 | 85,670,000.00 | 06/23/2023 | ||
| 10/17/2023 | 30508191 | 6 | 98 | 11,703.90 | 56,086,341.54 | 56,086,341.54 | 85,670,000.00 | 06/23/2023 | ||
| 09/15/2023 | 30508191 | 6 | 98 | 12,112.57 | 56,178,697.59 | 56,178,697.59 | 85,670,000.00 | 06/23/2023 | ||
| 08/17/2023 | 30508191 | 6 | 98 | 12,131.05 | 56,264,841.78 | 56,350,705.01 | 85,670,000.00 | 06/23/2023 | ||
| 07/17/2023 | 30508191 | 6 | 98 | 5,095.48 | 56,350,705.01 | 56,442,226.55 | 85,670,000.00 | 06/23/2023 | ||
| Reports Available at sf.citidirect.com | v. 21.09.28 | Page 26 of 32 | © Copyright 2026 Citigroup |
| Benchmark 2021-B31 Mortgage Trust |
| Commercial Mortgage Pass Through Certificates, Series 2021-B31 |
| UNSCHEDULED PRINCIPAL DETAIL |
| March 17, 2026 |
| Liquidation / | Liquid / Prepay | Principal | Principal | Prepayment Interest | Prepayment | Yield Maintenance | ||
| Loan ID | OMCR | Prepayment Date | Code (5) | Collections | Adjustments | Excess / (Shortfall) | Penalties (PPP) | Penalties (YM) |
| No Loans with Unscheduled Principal Activity to Report. | ||||||||
| Reports Available at sf.citidirect.com | v. 21.09.28 | Page 27 of 32 | © Copyright 2026 Citigroup |
| Benchmark 2021-B31 Mortgage Trust |
| Commercial Mortgage Pass Through Certificates, Series 2021-B31 |
| HISTORICAL UNSCHEDULED PRINCIPAL DETAIL |
| March 17, 2026 |
| Distribution | Liquidation / | Liquid / Prepay | Principal | Principal | Prepayment Interest | Prepayment | Yield Maintenance | ||
| Date | Loan ID | OMCR | Prepayment Date | Code (5) | Collections | Adjustments | Excess / (Shortfall) | Penalties (PPP) | Penalties (YM) |
| No Loans with Unscheduled Principal Activity to Report. | |||||||||
| Reports Available at sf.citidirect.com | v. 21.09.28 | Page 28 of 32 | © Copyright 2026 Citigroup |
| Benchmark 2021-B31 Mortgage Trust |
| Commercial Mortgage Pass Through Certificates, Series 2021-B31 |
| LIQUIDATED LOAN DETAIL |
| March 17, 2026 |
| Beginning | Most | Liquidation | Net | Net | Realized | Date of | Loss with | ||||
| Scheduled | Recent | Sales | Proceeds | Liquidation | Proceeds | Loss to | Current | Current Cumulative | Cumulative | ||
| Loan ID | OMCR | Balance | Value | Price | Received | Expense | Available | Trust | Adj. to Loan | Adj. to Loan Adj. to Loan | Adj. to Trust |
| No Loans liquidated to Report. | |||||||||||
| Reports Available at sf.citidirect.com | v. 21.09.28 | Page 29 of 32 | © Copyright 2026 Citigroup |
| Benchmark 2021-B31 Mortgage Trust |
| Commercial Mortgage Pass Through Certificates, Series 2021-B31 |
| HISTORICAL LIQUIDATED LOAN |
| March 17, 2026 |
| Beginning | Most | Liquidation | Net | Net | Realized | Date of | Loss with | ||||
| Distribution | Scheduled | Recent | Sales | Proceeds | Liquidation | Proceeds | Loss to | Current | Current Cumulative | Cumulative | |
| Date | Loan ID OMCR | Balance | Value | Price | Received | Expense | Available | Trust | Adj. to Loan | Adj. to Loan Adj. to Loan | Adj. to Trust |
| No Loans liquidated to Report. | |||||||||||
| Reports Available at sf.citidirect.com | v. 21.09.28 | Page 30 of 32 | © Copyright 2026 Citigroup |
| Benchmark 2021-B31 Mortgage Trust |
| Commercial Mortgage Pass Through Certificates, Series 2021-B31 |
| CREFC® INVESTOR REPORTING PACKAGE LEGENDS |
| March 17, 2026 |
| 1|CREFC Investor Reporting Package Legends | |||||
| Property Type (1) | Workout Strategy (3) | Liquidation/Prepayment Code (5) | |||
| MF | Multifamily | 1 | Modification | 1 | Partial Liquidation (Curtailment) |
| RT | Retail | 2 | Foreclosure | 2 | Payoff Prior To Maturity |
| HC | HealthCare | 3 | Bankruptcy | 3 | Disposition / Liquidation |
| IN | Industrial | 4 | Extension | 4 | Repurchase / Substitution |
| MH | Mobile Home Park | 5 | Note Sale | 5 | Full Payoff At Maturity |
| OF | Office | 6 | DPO | 6 | DPO |
| MU | Mixed Use | 7 | REO | 7 | Liquidation prior to 7/1/2006 |
| LO | Lodging | 8 | Resolved | 8 | Payoff With Penalty |
| SS | Self Storage | 9 | Pending Return to Master Servicer | 9 | Payoff With Yield Maintenance |
| SE | Securities | 10 | Deed In Lieu of Foreclosure | 10 | Curtailment With Penalty |
| CH | Cooperative Housing | 11 | Full Payoff | 11 | Curtailment With Yield Maintenance |
| ZZ | Missing Information | 12 | Reps and Warranties | ||
| SF | SF | 13 | TBD | ||
| WH | Warehouse | 98 | Other | ||
| OT | Other | ||||
| Modification Code (4) | |||||
| Payment Status of Loan (2) | |||||
| 1 | Maturity Date Extension | ||||
| A | In Grace Period | 2 | Amortization Change | ||
| B | Late, but less than 30 Days | 3 | Principal Write-Off | ||
| 0 | Current | 4 | Blank (formerly Combination) | ||
| 1 | 30-59 Days Delinquent | 5 | Temporary Rate Reduction | ||
| 2 | 60-89 Days Delinquent | 6 | Capitalization of Interest | ||
| 3 | 90-120 Days Delinquent | 7 | Capitalization of Taxes | ||
| 4 | Performing Matured Balloon | 8 | Other | ||
| 5 | Non Performing Matured Balloon | 9 | Combination | ||
| 6 | 121+ Days Delinquent | 10 | Forbearance | ||
| Reports Available at sf.citidirect.com | v. 21.09.28 | Page 31 of 32 | © Copyright 2026 Citigroup |
| Benchmark 2021-B31 Mortgage Trust |
| Commercial Mortgage Pass Through Certificates, Series 2021-B31 |
| NOTES |
| March 17, 2026 |
| No Notes available for this deal at this time. |
| Reports Available at sf.citidirect.com | v. 21.09.28 | Page 32 of 32 | © Copyright 2026 Citigroup |