Exhibit 99.31 GE CAPITAL MORTGAGE SERVICES, INC. SERVICER'S CERTIFICATE January, 2000 Series 1999-15, REMIC Multi-Class Pass-Through Certificates Pursuant to the Pooling and Servicing Agreement dated as of July 1, 1999 (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 $ 816,093.62 -------------- (b) Interest $ 5,861,787.31 -------------- (c) Total $ 6,677,880.93 -------------- 2. Aggregate scheduled Monthly Payments received this month: (a) Principal $ 565,751.55 -------------- (b) Interest $ 4,028,667.51 -------------- (c) Total $ 4,594,419.06 -------------- 3. Aggregate Monthly Advances this month: (a) Principal $ 250,342.07 -------------- (b) Interest $ 1,833,119.80 -------------- (c) Total $ 2,083,461.87 -------------- 4. Aggregate Principal Prepayments in part received in the applicable Prepayment Period: (a) Principal $ 326,458.07 -------------- 5. Aggregate Principal Prepayments in full received in the applicable Prepayment Period: (a) Principal $ 3,277,023.99 -------------- (b) Interest $ 20,060.75 -------------- (c) Total $ 3,297,084.74 -------------- 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: $ 970,153,400.65 --------------- 13. Available Funds: $ 10,106,382.03 --------------- 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: $ 2,946.72 -------------- 18. Total interest payments: $ 5,686,807.64 -------------- 19. Interest Unpaid Class Accrued Certificate Interest Shortfalls Interest Class Interest Payable Pay-out Rate - ----- -------- ------------------- ------- ------------ PO $ 0.00 $ 0.00 $ 0.00 %0.000000000 A1 $ 430,376.76 $ 22.02 $ 430,354.74 %6.749654519 A2 $ 235,260.65 $ 12.04 $ 235,248.61 %6.749654469 A3 $ 263,896.05 $ 13.50 $ 263,882.55 %6.749654493 A4 $ 149,209.59 $ 7.64 $ 149,201.95 %6.999642008 A5 $ 28,125.00 $ 1.44 $ 28,123.56 %6.749654400 A6 $ 7,000.00 $ 0.36 $ 6,999.64 %6.999640000 A7 $ 1,750.00 $ 0.09 $ 1,749.91 %6.999640000 A8 $ 1,750.00 $ 0.09 $ 1,749.91 %6.999640000 A9 $ 1,750.00 $ 0.09 $ 1,749.91 %6.999640000 A10 $ 5,250.00 $ 0.27 $ 5,249.73 %6.999640000 A11 $ 21,875.00 $ 1.12 $ 21,873.88 %6.999641600 A12 $ 217,383.83 $ 11.12 $ 217,372.71 %6.999641816 A13 $ 537,826.42 $ 27.52 $ 537,798.90 %6.749654604 A14 $ 0.00 $ 0.00 $ 0.00 %0.000000000 A15 $ 8,830.78 $ 0.45 $ 8,830.33 %7.249632264 A16 $ 653,238.92 $ 33.43 $ 653,205.49 %6.749654552 A17 $ 379,116.41 $ 19.40 $ 379,097.01 %6.999641860 A18 $ 30,208.33 $ 1.55 $ 30,206.78 %7.249629600 A19 $ 60,416.67 $ 3.09 $ 60,413.58 %7.249628400 A20 $ 30,208.33 $ 1.55 $ 30,206.78 %7.249629600 A21 $ 140,577.14 $ 7.19 $ 140,569.95 %7.249629007 A22 $ 117,740.40 $ 6.03 $ 117,734.37 %6.749654779 A23 $ 172,828.97 $ 8.84 $ 172,820.13 %6.749654404 A24 $ 233,798.75 $ 11.96 $ 0.00 %6.749654572 A25 $ 520,965.87 $ 26.66 $ 520,939.21 %6.749654550 A26 $ 3,403.13 $ 0.17 $ 3,402.96 %6.749652893 A27 $ 286,379.85 $ 14.66 $ 286,365.19 %6.749654664 A28 $ 294,695.44 $ 15.08 $ 294,680.36 %6.749654650 2A1 $ 231,257.58 $ 11.69 $ 231,245.89 %6.749658674 2A2 $ 56,362.50 $ 2.85 $ 56,359.65 %7.499620758 2A3 $ 0.00 $ 0.00 $ 0.00 %0.000000000 2A4 $ 56,360.62 $ 2.85 $ 56,357.77 %7.499620912 2A5 $ 40,696.57 $ 2.06 $ 40,694.51 %6.749658118 1S $ 207,973.31 $ 10.64 $ 207,962.67 %0.352405614 2S $ 21,407.95 $ 1.08 $ 21,406.87 %0.359529410 M $ 118,177.75 $ 6.31 $ 118,171.44 %6.749639579 B1 $ 42,206.74 $ 2.25 $ 42,204.49 %6.749640240 B2 $ 25,321.80 $ 1.35 $ 25,320.45 %6.749639373 B3 $ 28,134.09 $ 1.50 $ 28,132.59 %6.749639738 B4 $ 11,254.76 $ 0.60 $ 11,254.16 %6.749641914 B5 $ 14,082.97 $ 0.75 $ 14,082.22 %6.749640499 R $ 0.00 $ 0.00 $ 0.00 %0.000000000 20. Principal Distribution Amount: $ 4,419,574.39 ------------- 21. Principal Distribution Amount per Certificate: Principal Distribution Accrual Amount ---------------------- -------------- Class PO $ 9,658.73 $ 0.00 Class A1 $ 609,925.87 $ 0.00 Class A2 $ 159,395.00 $ 0.00 Class A3 $ 418,202.02 $ 0.00 Class A4 $ 0.00 $ 0.00 Class A5 $ 0.00 $ 0.00 Class A6 $ 0.00 $ 0.00 Class A7 $ 0.00 $ 0.00 Class A8 $ 0.00 $ 0.00 Class A9 $ 0.00 $ 0.00 Class A10 $ 0.00 $ 0.00 Class A11 $ 0.00 $ 0.00 Class A12 $ 0.00 $ 0.00 Class A13 $ 594,606.68 $ 0.00 Class A14 $ 0.00 $ 0.00 Class A15 $ 0.00 $ 0.00 Class A16 $ 1,520,452.61 $ 0.00 Class A17 $ 0.00 $ 0.00 Class A18 $ 0.00 $ 0.00 Class A19 $ 0.00 $ 0.00 Class A20 $ 0.00 $ 0.00 Class A21 $ 0.00 $ 0.00 Class A22 $ 233,786.79 $ 0.00 Class A23 $ 0.00 $ 0.00 Class A24 $ 0.00 $ 233,786.79 Class A25 $ 0.00 $ 0.00 Class A26 $ 0.00 $ 0.00 Class A27 $ 609,925.87 $ 0.00 Class A28 $ 0.00 $ 0.00 Class 2A1 $ 461,820.95 $ 0.00 Class 2A2 $ 0.00 $ 0.00 Class 2A3 $ 0.00 $ 0.00 Class 2A4 $ 0.00 $ 0.00 Class 2A5 $ 0.00 $ 0.00 Class 1S $ 0.00 $ 0.00 Class 2S $ 0.00 $ 0.00 Class M $ 17,583.98 $ 0.00 Class B1 $ 6,280.05 $ 0.00 Class B2 $ 3,767.70 $ 0.00 Class B3 $ 4,186.15 $ 0.00 Class B4 $ 1,674.62 $ 0.00 Class B5 $ 2,094.16 $ 0.00 Class R $ 0.00 $ 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: $ 0.65 --------------- Accumulative Class Supported Shortfall Supported Shortfall ----- ------------------- ------------------- B1 $ 0.00 $ 0.00 B2 $ 0.00 $ 0.00 B3 $ 0.00 $ 0.00 B4 $ 0.00 $ 0.00 B5 $ 0.00 $ 0.00 25. Unanticipated Recoveries: $ 0.00 ------------ B. Other Amounts for such Distribution Date: 1. Prepayment Distribution Triggers satisfied: Yes No --- -- Class-B1 X Class-B2 X Class-B3 X Class-B4 X Class-B5 X 2. Base Servicing Fee amount: $ 216,290.04 ----------- 3. Supplemental Servicing Fee amount: $ N/A ----------- 4. Credit Losses for prior month: $ 0.00 ----------- Category A Category B Category C 5. Senior Percentage: %N/A 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: %N/A 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: %N/A ---- 12. Junior Prepayment Percentage: %N/A ---- Capitalized terms used in this Certificate shall have the same meanings as in the Agreement. GE CAPITAL MORTGAGE SERVICES, INC. By: /s/ Tim Neer ------------------------------- Tim Neer Vice President Investor Services