Exhibit 99.37 GE CAPITAL MORTGAGE SERVICES, INC. SERVICER'S CERTIFICATE February, 1999 Series 1998-12A, REMIC Multi-Class Pass-Through Certificates Pursuant to the Pooling and Servicing Agreement dated as of July 1, 1998 (the "Agreement") between GE Capital Mortgage Services, Inc. (the "Company") and State Street Bank (the "Trustee"), governing the Certificates referred to above, the Company hereby certifies to the Trustee: With respect to the Agreement and as of the Determination Date for this month: A. Mortgage Loan Information: 1. Aggregate scheduled Monthly Payments: (a) Principal $ 302,938.05 ------------- (b) Interest $ 2,253,283.92 ------------- (c) Total $ 2,556,221.97 ------------- 2. Aggregate scheduled Monthly Payments received this month: (a) Principal $ 251,026.83 ------------- (b) Interest $ 1,889,934.52 ------------- (c) Total $ 2,140,961.35 ------------- 3. Aggregate Monthly Advances this month: (a) Principal $ 51,911.22 ------------- (b) Interest $ 363,349.40 ------------- (c) Total $ 415,260.62 ------------- 4. Aggregate Principal Prepayments in part received in the applicable Prepayment Period: (a) Principal $ 44,131.42 ------------- 5. Aggregate Principal Prepayments in full received in the applicable Prepayment Period: (a) Principal $ 4,990,620.88 ------------- (b) Interest $ 30,001.06 ------------- (c) Total $ 5,020,621.94 ------------- 6. Aggregate Insurance Proceeds received: (a) Principal $ 0.00 ------------- (b) Interest $ 0.00 ------------- (c) Total $ 0.00 ------------- 7. Aggregate Liquidation Proceeds received: (a) Principal $ 0.00 ------------- (b) Interest $ 0.00 ------------- (c) Total $ 0.00 ------------- 8. Aggregate Deficient Valuations with respect to the Mortgage Loans during the prior month: $ 0.00 ------------- 9. Aggregate Debt Service Reductions with respect to the Mortgage Loans during the prior month: $ 0.00 --------------- 10. Aggregate Purchase Prices for Defaulted Mortgage Loans: (a) Principal $ 0.00 --------------- (b) Interest $ 0.00 --------------- (c) Total $ 0.00 --------------- 11. Aggregate Purchase Prices for Defective Mortgage Loans: (a) Principal $ 0.00 --------------- (b) Interest $ 0.00 --------------- (c) Total $ 0.00 --------------- 12. Pool Scheduled Principal Balance: $367,078,611.31 --------------- 13. Available Funds: $ 7,427,857.57 --------------- 14. Realized Losses for prior month: $ 0.00 --------------- 15. Aggregate Realized Losses (a) Aggregate Realized Losses: $ 0.00 ------------------------ (b) Deficient Valuations: $ 0.00 ------------------------ (c) Debt Service Reductions: $ 0.00 ------------------------ (d) Bankruptcy Losses: $ 0.00 ------------------------ (e) Special Hazard Losses: $ 0.00 ------------------------ (f) Fraud Losses: $ 0.00 ------------------------ (g) Excess Bankruptcy Losses: $ 0.00 ------------------------ (h) Excess Special Hazard Losses: $ 0.00 ------------------------ (i) Excess Fraud Losses: $ 0.00 ------------------------ 16. Non-Credit Losses: $ 0.00 ------------- 17. Compensating Interest Payment: $ 4,282.36 ------------- 18. Total interest payments: $ 2,090,167.23 ------------- 19. Interest Unpaid Class Accrued Certificate Interest Shortfalls Interest Class Interest Payable Pay-out Rate - ----- -------- ------------------- ------- ------------ PO1 $ 0.00 $ 0.00 $ 0.00 % 0.000000000 1A1 $ 288,654.17 $ 0.00 $ 288,654.17 % 6.500000075 1A2 $ 218,278.50 $ 0.00 $ 218,278.50 % 6.600000000 1A3 $ 242,852.67 $ 0.00 $ 242,852.67 % 6.700000092 1A4 $ 186,862.50 $ 0.00 $ 186,862.50 % 6.750000000 1A5 $ 78,603.75 $ 0.00 $ 78,603.75 % 6.750000000 1A6 $ 17,875.29 $ 0.00 $ 17,875.29 % 6.749999370 1A7 $ 505,505.13 $ 0.00 $ 505,505.13 % 6.749999975 1A8 $ 150,835.05 $ 0.00 $ 150,835.05 % 5.500000014 1A9 $ 82,273.66 $ 0.00 $ 82,273.66 % 11.571428096 1A10 $ 0.00 $ 0.00 $ 0.00 % 0.000000000 1A11 $ 74,356.79 $ 0.00 $ 74,356.79 % 5.777339897 1A12 $ 41,476.99 $ 0.00 $ 41,476.99 % 9.667980664 1A13 $ 109,473.45 $ 0.00 $ 109,473.45 % 6.749999999 1A14 $ 3,391.66 $ 0.00 $ 0.00 % 6.749998408 1R $ 0.00 $ 0.00 $ 0.00 % 0.000000000 1RL $ 0.00 $ 0.00 $ 0.00 % 0.000000000 1M $ 41,495.25 $ 0.00 $ 41,495.25 % 6.750000040 1B1 $ 17,945.63 $ 0.00 $ 17,945.63 % 6.749999306 1B2 $ 10,093.89 $ 0.00 $ 10,093.89 % 6.749997944 1B3 $ 8,974.22 $ 0.00 $ 8,974.22 % 6.750003380 1B4 $ 4,484.31 $ 0.00 $ 4,484.31 % 6.750002173 1B5 $ 6,734.14 $ 0.00 $ 6,734.14 % 6.750001209 20. Principal Distribution Amount: $ 5,337,690.34 ------------- 21. Principal Distribution Amount per Certificate: Principal Distribution Accrual Amount ---------------------- -------------- Class PO1 $ 18,213.70 $ 0.00 Class 1A1 $ 0.00 $ 0.00 Class 1A2 $ 0.00 $ 0.00 Class 1A3 $ 0.00 $ 0.00 Class 1A4 $ 0.00 $ 0.00 Class 1A5 $ 0.00 $ 0.00 Class 1A6 $ 0.00 $ 0.00 Class 1A7 $ 858,539.64 $ 0.00 Class 1A8 $ 1,015,511.73 $ 0.00 Class 1A9 $ 263,280.82 $ 0.00 Class 1A10 $ 0.00 $ 0.00 Class 1A11 $ 2,233,113.00 $ 0.00 Class 1A12 $ 744,371.00 $ 0.00 Class 1A13 $ 185,927.48 $ 0.00 Class 1A14 $ 9,151.99 $ 3,391.66 Class SUP1 $ 0.00 $ 0.00 Class 1R $ 0.00 $ 0.00 Class 1RL $ 0.00 $ 0.00 Class 1M $ 5,999.31 $ 0.00 Class 1B1 $ 2,594.55 $ 0.00 Class 1B2 $ 1,459.36 $ 0.00 Class 1B3 $ 1,297.48 $ 0.00 Class 1B4 $ 648.33 $ 0.00 Class 1B5 $ 973.61 $ 0.00 22. Additional distributions to the Class R Certificate pursuant to the Agreement: $ 0.00 -------------- 23. Additional distributions to the Class RL Certificate pursuant to the Agreement: $ 0.00 -------------- 24. Subordinate Certificate Writedown Amount: $ 0.00 -------------- Accumulative Class Supported Shortfall Supported Shortfall ----- ------------------- ------------------- 1B1 $ 0.00 $ 0.00 1B2 $ 0.00 $ 0.00 1B3 $ 0.00 $ 0.00 1B4 $ 0.00 $ 0.00 1B5 $ 0.00 $ 0.00 25. Unanticipated Recoveries: $ 0.00 ------------- 26. The Certificate Interest Rate applicable to the Interest Accrual Period relating to such Distribution Date applicable to any floating index certificate. Class Certificate Interest Rates Class 1A8 % 5.50000001 Class 1A9 % 11.57142810 Class 1A11 % 5.77733990 Class 1A12 % 9.66798066 B. Other Amounts for such Distribution Date: 1. Prepayment Distribution Triggers satisfied: Yes No --- -- Class-1B1 X Class-1B2 X Class-1B3 X Class-1B4 X Class-1B5 X 2. Base Servicing Fee amount: $ 70,593.76 ----------- 3. Supplemental Servicing Fee amount: $ 116,266.34 ----------- 4. Credit Losses for prior month: $ 0.00 ----------- Category Category Category A B C 5. Senior Percentage: % 95.707164 N/A N/A N/A ----------- ---- ------ ------ 6. Group I Senior Percentage: % N/A N/A N/A N/A ----------- ---- ------ ------ 7. Group II Senior Percentage: % N/A N/A N/A N/A ----------- ---- ------ ------ 8. Senior Prepayment Percentage: %100.000000 N/A N/A N/A ----------- ---- ------ ------ 9. Group I Senior Prepayment Percentage: % N/A N/A N/A N/A ----------- ---- ------ ------ 10. Group II Senior Prepayment Percentage: % N/A N/A N/A N/A ----------- ---- ------ ------ 11. Junior Percentage: % 4.292836 ----------- 12. Junior Prepayment Percentage: %100.000000 ----------- Capitalized terms used in this Certificate shall have the same meanings as in the Agreement. GE CAPITAL MORTGAGE SERVICES, INC. By: /s/ Tim Neer ------------------------------- Name: Tim Neer Title: Vice President Investor Operations