Exhibit 99.15

                       GE CAPITAL MORTGAGE SERVICES, INC.
                             SERVICER'S CERTIFICATE
                                   July, 1998
           Series 1998-6B, REMIC Multi-Class Pass-Through Certificates

Pursuant to the Pooling and Servicing  Agreement  dated as of March 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                                     $       251,124.99
                                                                ----------------
        (b)    Interest                                      $     1,983,971.56
                                                                ----------------
        (c)    Total                                         $     2,235,096.55
                                                                ----------------

 2.     Aggregate scheduled Monthly Payments received this month:
        (a)    Principal                                     $       227,139.26
                                                                ----------------
        (b)    Interest                                      $     1,796,016.48
                                                                ----------------
        (c)    Total                                         $     2,023,155.74
                                                                ----------------

 3.     Aggregate Monthly Advances this month:
        (a)    Principal                                     $        23,985.73
                                                                ----------------
        (b)    Interest                                      $       187,955.08
                                                                ----------------
        (c)    Total                                         $       211,940.81
                                                                ----------------

 4.      Aggregate  Principal  Prepayments  in part  received in the  applicable
         Prepayment Period:
        (a)    Principal                                     $        63,773.39
                                                                ----------------

 5.     Aggregate  Principal  Prepayments  in full  received  in the  applicable
        Prepayment Period:
        (a)    Principal                                     $     3,301,905.81
                                                                ----------------
        (b)    Interest                                      $        18,123.91
                                                                ----------------
        (c)    Total                                         $     3,320,029.72
                                                                ----------------

 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:                    $   318,918,780.67
                                                                 ---------------

13.     Available Funds:                                     $     5,430,102.77
                                                                 ---------------

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:                      $         2,343.14
                                                                ----------------

18.      Total interest payments:                            $     1,813,298.58
                                                                  --------------

19.       Interest
          Accrued         Unpaid Class
        Certificate         Interest       Interest
Class     Interest         Shortfalls       Payable            Pay-out Rate
- -----     --------         ----------       -------            ------------
2PO   $          0.00   $         0.00   $         0.00       % 0.000000000
2A1   $     16,095.62   $         0.00   $    16,095.62       % 6.749998126
2A2   $    442,728.45   $         0.00   $   442,728.45       % 6.750000061
2A3   $    697,804.06   $         0.00   $   697,804.06       % 6.749999965
2A4   $    123,238.13   $         0.00   $   123,238.13       % 6.750000274
2A5   $     90,759.38   $         0.00   $    90,759.38       % 6.750000372
2A6   $    135,797.88   $         0.00   $   135,797.88       % 6.550000241
2A7   $     50,794.63   $         0.00   $    50,794.63       % 7.350000724
2A8   $    182,812.50   $         0.00   $   182,812.50       % 6.750000000
2M    $     33,885.36   $         0.00   $    33,885.36       % 6.750000213
2B1   $     14,652.98   $         0.00   $    14,652.98       % 6.750001612
2B2   $      8,244.05   $         0.00   $     8,244.05       % 6.749997508
2B3   $      7,326.49   $         0.00   $     7,326.49       % 6.750001612
2B4   $      3,663.24   $         0.00   $     3,663.24       % 6.749992399
2B5   $      5,495.81   $         0.00   $     5,495.81       % 6.750000614

20.     Principal Distribution Amount:                       $     3,616,804.19
                                                                ----------------

21.     Principal Distribution Amount per Certificate:

                                 Principal Distribution      Accrual Amount
                                 ----------------------      --------------
        Class 2PO                $              168.13       $          0.00
        Class 2A1                $          366,625.64       $          0.00
        Class 2A2                $        1,403,754.05       $          0.00
        Class 2A3                $        1,836,115.55       $          0.00
        Class 2A4                $                0.00       $          0.00
        Class 2A5                $                0.00       $          0.00
        Class 2A6                $                0.00       $          0.00
        Class 2A7                $                0.00       $          0.00
        Class 2A8                $                0.00       $          0.00
        Class SUP2               $                0.00       $          0.00
        Class 2M                 $            4,689.98       $          0.00
        Class 2B1                $            2,028.08       $          0.00
        Class 2B2                $            1,141.04       $          0.00
        Class 2B3                $            1,014.04       $          0.00
        Class 2B4                $              507.02       $          0.00
        Class 2B5                $              760.66       $          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
                -----       -------------------     -------------------
                 2B1        $              0.00     $              0.00
                 2B2        $              0.00     $              0.00
                 2B3        $              0.00     $              0.00
                 2B4        $              0.00     $              0.00
                 2B5        $              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  2A6                %              6.55000024
         Class  2A7                %              7.35000072

BOther Amounts for such Distribution Date:

 1.     Prepayment Distribution Triggers satisfied:
                        Yes         No
         Class-2B1       X
         Class-2B2       X
         Class-2B3       X
         Class-2B4       X
         Class-2B5       X

 2.     Base Servicing Fee amount:                           $        69,485.00
                                                                     -----------

 3.     Supplemental Servicing Fee amount:                   $       122,861.58
                                                                     -----------

 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              
                                            -------------------------------
                                            Name:    Tim Neer
                                            Title:   Vice President,
                                                     Investor Operations