Exhibit 99.21

                       GE CAPITAL MORTGAGE SERVICES, INC.
                             SERVICER'S CERTIFICATE
                                  January, 2000
           Series 1999-11, REMIC Multi-Class Pass-Through Certificates

Pursuant  to the Pooling and  Servicing  Agreement  dated as of May 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                                $      795,599.67
                                                                  --------------
               (b)   Interest                                 $    5,412,577.07
                                                                  --------------
               (c)   Total                                    $    6,208,176.74
                                                                  --------------

        2. Aggregate scheduled Monthly Payments received this month:
               (a)   Principal                                $      513,765.26
                                                                  --------------
               (b)   Interest                                 $    3,490,723.39
                                                                  --------------
               (c)   Total                                    $    4,004,488.65
                                                                  --------------

        3.     Aggregate Monthly Advances this month:
               (a)   Principal                                $      281,834.41
                                                                  --------------
               (b)   Interest                                 $    1,921,853.68
                                                                  --------------
               (c)   Total                                    $    2,203,688.09
                                                                  --------------

        4.      Aggregate   Principal   Prepayments  in  part  received  in  the
                applicable Prepayment Period:
               (a)   Principal                                $      192,798.45
                                                                  --------------

        5.     Aggregate   Principal   Prepayments   in  full  received  in  the
               applicable Prepayment Period:
               (a)   Principal                                $    3,805,747.80
                                                                  --------------
               (b)   Interest                                 $       22,738.51
                                                                  --------------
               (c)   Total                                    $    3,828,486.31
                                                                  --------------

        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:                    $  905,158,193.00
                                                                 ---------------

13.      Available Funds:                                     $   10,039,492.97
                                                                 ---------------

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:                      $       2,732.57
                                                                  -------------

18.       Total interest payments:                            $   5,245,347.05
                                                                  -------------

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   $        153,408.89   $              0.00    $    153,408.89   %5.950000013
A2   $        228,536.00   $              0.00    $    228,536.00   %6.000000000
A3   $        892,574.07   $              0.00    $    892,574.07   %6.249999980
A4   $        233,709.96   $              0.00    $    233,709.96   %6.781249980
A5   $         59,235.24   $              0.00    $     59,235.24   %1.718749899
A6   $      1,210,554.21   $              0.00    $  1,210,554.21   %6.499999982
A7   $        766,340.71   $              0.00    $    766,340.71   %6.500000008
A8   $        273,953.61   $              0.00    $    273,953.61   %6.500000029
A9   $          5,625.42   $              0.00    $          0.00   %6.500004237
A10  $        102,533.15   $              0.00    $    102,533.15   %6.500000317
A11  $         36,259.17   $              0.00    $     36,259.17   %6.500000598
A12  $          8,706.67   $              0.00    $      8,706.67   %8.000003063
A13  $        114,468.88   $              0.00    $    114,468.88   %6.981250128
A14  $         24,902.36   $              0.00    $     24,902.36   %4.935937642
A15  $              0.00   $              0.00    $          0.00   %0.000000000
A16  $              0.00   $              0.00    $          0.00   %0.000000000
A17  $         21,235.52   $              0.00    $          0.00   %6.499998677
A18  $         31,669.04   $              0.00    $     31,669.04   %6.749999467
A19  $         32,841.97   $              0.00    $     32,841.97   %7.000000000
A20  $              0.00   $              0.00    $          0.00   %0.000000000
A21  $          7,078.51   $              0.00    $          0.00   %6.500001722
A22  $        515,883.47   $              0.00    $    515,883.47   %6.500000016
S    $        320,695.42   $              0.00    $    320,695.42   %0.445697329
RL   $              0.00   $              0.00    $          0.00   %0.000000000
M    $         94,875.58   $              0.00    $     94,875.58   %6.500000190
B1   $         38,461.76   $              0.00    $     38,461.76   %6.499999648
B2   $         23,078.13   $              0.00    $     23,078.13   %6.499998835
B3   $         25,641.17   $              0.00    $     25,641.17   %6.499998808
B4   $         10,257.55   $              0.00    $     10,257.55   %6.500002020
B5   $         12,820.59   $              0.00    $     12,820.59   %6.499999077
R    $              0.00   $              0.00    $          0.00   %0.000000000

20.       Principal Distribution Amount:                      $    4,794,145.92
                                                                  --------------

21.      Principal Distribution Amount per Certificate:

                                  Principal Distribution        Accrual Amount
                                  ----------------------        --------------
         Class PO                 $              1,315.24       $         0.00
         Class A1                 $                  0.00       $         0.00
         Class A2                 $                  0.00       $         0.00
         Class A3                 $                  0.00       $         0.00
         Class A4                 $                  0.00       $         0.00
         Class A5                 $                  0.00       $         0.00
         Class A6                 $          2,231,406.31       $         0.00
         Class A7                 $          1,960,496.53       $         0.00
         Class A8                 $            398,849.50       $         0.00
         Class A9                 $                  0.00       $     5,625.42
         Class A10                $                  0.00       $         0.00
         Class A11                $                  0.00       $         0.00
         Class A12                $                  0.00       $         0.00
         Class A13                $            155,167.09       $         0.00
         Class A14                $             47,743.72       $         0.00
         Class A15                $                  0.00       $         0.00
         Class A16                $                  0.00       $         0.00
         Class A17                $                  0.00       $    21,235.52
         Class A18                $                  0.00       $         0.00
         Class A19                $                  0.00       $         0.00
         Class A20                $                  0.00       $         0.00
         Class A21                $                  0.00       $     7,078.51
         Class A22                $                  0.00       $         0.00
         Class S                  $                  0.00       $         0.00
         Class RL                 $                  0.00       $         0.00
         Class M                  $             15,312.10       $         0.00
         Class B1                 $              6,207.40       $         0.00
         Class B2                 $              3,724.61       $         0.00
         Class B3                 $              4,138.26       $         0.00
         Class B4                 $              1,655.48       $         0.00
         Class B5                 $              2,069.13       $         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:              $         0.00
                                                                   ------------

                                                        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
                                                                   -------------

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  A4                  %             6.78124998
          Class  A5                  %             1.71874990
          Class  A13                 %             6.98125013
          Class  A14                 %             4.93593764

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:                     $      214,297.35
                                                                     -----------

        3.     Supplemental Servicing Fee amount:             $             N/A
                                                                     -----------

        4.     Credit Losses for prior month:                 $            0.00
                                                                     -----------
                                                      Category Category Category
                                                          A        B        C
        5.     Senior Percentage:           % 95.833151  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:           %  4.166849
                                             -----------

        12.    Junior Prepayment Percentage:
                                            %  0.000000
                                             -----------

Capitalized  terms used in this  Certificate  shall have the same meanings as in
the Agreement.

                                            GE CAPITAL MORTGAGE SERVICES, INC.

                                            By:  /s/ Tim Neer
                                            -------------------------------
                                                     Tim Neer
                                                     Vice President
                                                     Investor Services