SAXON ASSET SECURITIES CO
8-K, 1999-12-06
ASSET-BACKED SECURITIES
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<PAGE>

                      SECURITIES AND EXCHANGE COMMISSION
                            Washington, D.C.  20549

                       ________________________________

                                   FORM 8-K

             Current Report Pursuant to Section 13 or 15(d) of the
                        Securities Exchange Act of 1934

      Date of Report (Date of earliest event reported) November 22, 1999

                        Saxon Asset Securities Company
- --------------------------------------------------------------------------------
              (Exact name of registrant as specified in charter)

<TABLE>
<S>                              <C>                                  <C>
          Virginia                         34-0-20552                           54-1810895
- -------------------------------  ----------------------------------   ------------------------------
(State or other jurisdiction          (Commission File Number)                 (IRS Employer
of incorporation)                                                            Identification No.)
</TABLE>

                   4880 Cox Road, Glen Allen, Virginia 23060
                   -----------------------------------------
              (Address of principal executive offices)(Zip Code)

       Registrant's telephone number, including area code (804) 967-7400
                                                          --------------

- --------------------------------------------------------------------------------
        (Former name or former address, if changed since last report.)
<PAGE>

Item 1.  Changes in Control of Registrant.  Not Applicable.

Item 2.  Acquisition or Disposition of Assets.  Not Applicable.

Item 3.  Bankruptcy or Receivership.  Not Applicable.

Item 4.  Changes in Registrant's Certifying Accountant.  Not Applicable.

Item 5.  Other Events.

     On November 22, 1999, the Registrant caused the issuance and sale of
Mortgage Loan Asset Backed Certificates, Series 1999-4, pursuant to a Trust
Agreement dated as of November 1, 1999, among the Registrant, Saxon Mortgage,
Inc., as Master Servicer, and Chase Bank of Texas, National Association, as
Trustee, (the "Trust Agreement"). Capitalized terms used and not defined herein
shall have the meanings assigned to them in the Trust Agreement.

     Certificates were issued with original principal amounts and pass-through
rates set forth below:

         Designation               Pass-Through Rate        Principal Balance
   Class AV-1 Certificates            Variable/(1)/            $303,437,000
   Class MV-1 Certificates            Variable/(1)/            $ 27,568,000
   Class MV-2 Certificates            Variable/(1)/            $ 20,340,000
   Class BV-1 Certificates            Variable/(1)/            $ 18,655,000
   Class R Certificates                 /(2)/                       /(3)/


(1)  Subject to a cap equal to the Available Funds on the Adjustable Rate
     Mortgage Loans for the applicable Accrual Period.
(2)  The Class R Certificates do not have an interest rate.
(3)  The Class R Certificates do not have principal balances.

     The Certificates represent undivided ownership interest in pools of
mortgage loans (the "Mortgage Loans") held by a trust (the "Trust") created
pursuant to the Trust Agreement . The Mortgage Loans were acquired by the
Registrant from Saxon Mortgage, Inc. ("SMI"), an affiliate of the Registrant
which originated or acquired the Mortgage Loans from various mortgage banking
institutions. The Mortgage Loans are secured by liens on single family
residential properties, including investment properties (which may be
condominiums, one family residences, one to four family residences or homes in
planned unit developments). The Mortgage Loans will be serviced by Meritech
Mortgage Services, Inc., an affiliate of the Registrant.

     Class AV-1, Class MV-1, Class MV-2 and a portion of the Class BV-1
Certificates were purchased by Morgan Stanley & Co. Incorporated (the
"Underwriter"), from the Seller pursuant to an Underwriting Agreement dated
November 17, 1999, and offered pursuant to Registration Statement No. 333-87351
by the Underwriter from time to time in negotiated transactions or otherwise, at
varying prices to be determined at the time of sale.

     An election will be made to treat certain assets of the Trust as a real
estate mortgage investment conduit ("REMIC") for federal income tax purposes.
Each Class of Certificates listed above (other than the Class R Certificates)
will constitute "regular interests" in the REMIC.

     The description of the Mortgage Loans sold to the Trustee pursuant to the
Trust Agreement as of the Closing Date begins on the following page. The amounts
contained in the following tables have been rounded to the nearest dollar amount
and percentage, as applicable.
<PAGE>


                                                      MORGAN STANLEY DEAN WITTER
                                                             Saxon 1999-4
                                                 Preliminary Collateral Analysis
                                                              All records
                                                             2,077 records
                                                         Balance: 250,489,795
- --------------------------------------------------------------------------------
1. Summary for Prosup

Aggregate Scheduled Principal Balances: 250,489,795.16
Average Scheduled Principal Balance: 120,601.73
Min Scheduled Principal Balance: 16,418.45
Max Scheduled Principal Balance: 850,000.00
Weighted Average Coupon (One Year CMTs): 9.641
Weighted Average Coupon (2/28 LIBOR): 9.921
Weighted Average Coupon (3/27 LIBOR): 10.091
Weighted Average Coupon (Six Month LIBOR): 8.386
Weighted Average Margin (One Year CMTs): 6.450
Weighted Average Margin (2/28 LIBOR): 6.346
Weighted Average Margin (3/27 LIBOR): 6.223
Weighted Average Margin (Six Month LIBOR): 5.981
Weighted Average Coupon: 9.977
Minimum Coupon: 5.850
Maximum Coupon: 13.890
Weighted Average Maximum Rate: 16.564
Min Maximum Rate: 12.740
Max Maximum Rate: 20.500
Weighted Average Minimum Rate: 9.831
Min Minimum Rate: 4.950
Max Minimum Rate: 13.890
Weighted Average Original LTV Ratio: 79.781
Weighted Average Remaining Amortization Term: 358.06
Min Remaining Amort Term: 265
Max Remaining Amort Term: 360
% 2nd Liens: 0.00
% Single Family Detached: 78.35
% Single Family Attached: 1.21
% PUD: 8.85
% Condominimum: 4.51
% 2-4 Family: 5.10
% Townhouses: 0.54
% Manufactured Home: 1.39
Weighted Average Servicing Fee Rate: 0.50


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

2. Saxon Credit Grade

- -------------------------------------------------------------------------------
Saxon Credit        Number of     Number of         Current          Current
Grade                Loans        Loans(%)         Balances($)       Balance(%)
- -------------------------------------------------------------------------------
A+                      33.00          1.59          5,053,211             2.02
- -------------------------------------------------------------------------------
A                      109.00          5.25         17,294,399              6.9
- -------------------------------------------------------------------------------
A-                     928.00         44.68        124,119,153            49.55
- -------------------------------------------------------------------------------
B                      547.00         26.34         61,680,919            24.62
- -------------------------------------------------------------------------------
C                      362.00         17.43         32,416,483            12.94
- -------------------------------------------------------------------------------
D                       98.00          4.72          9,925,630             3.96
- -------------------------------------------------------------------------------
Total:                2077.00        100.00        250,489,795              100
- -------------------------------------------------------------------------------


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

3. Current Scheduled Principal Balance($)
- ----------------------------------------------------------------
                                   Number of          Scheduled
Current Scheduled                   Mortgage          Principal
Principal Balance($)                 Loans(%)         Balance(%)
- ----------------------------------------------------------------
0.01 - 25,000.00                        0.63                0.12
- ----------------------------------------------------------------
25,000.01 - 50,000.00                  11.03                3.70
- ----------------------------------------------------------------
50,000.01 - 75,000.00                  21.28               11.13
- ----------------------------------------------------------------
75,000.01 - 100,000.00                 17.00               12.29
- ----------------------------------------------------------------
100,000.01 - 150,000.00                27.25               27.63
- ----------------------------------------------------------------
150,000.01 - 200,000.00                10.35               14.75
- ----------------------------------------------------------------
200,000.01 - 250,000.00                 6.11               11.29
- ----------------------------------------------------------------
250,000.01 - 300,000.00                 2.79                6.38
- ----------------------------------------------------------------
300,000.01 - 350,000.00                 1.16                3.10
- ----------------------------------------------------------------
350,000.01 - 400,000.00                 0.72                2.30
- ----------------------------------------------------------------
400,000.01 - 450,000.00                 0.63                2.22
- ----------------------------------------------------------------
450,000.01 - 500,000.00                 0.34                1.34
- ----------------------------------------------------------------
500,000.01 - 550,000.00                 0.14                0.63
- ----------------------------------------------------------------
550,000.01 - 600,000.00                 0.19                0.95
- ----------------------------------------------------------------
600,000.01 - 650,000.00                 0.14                0.75
- ----------------------------------------------------------------
650,000.01 - 700,000.00                 0.14                0.79
- ----------------------------------------------------------------
700,000.01 - 750,000.00                 0.05                0.29
- ----------------------------------------------------------------
800,000.01 - 850,000.00                 0.05                0.34
- ----------------------------------------------------------------
Total:                                100.00              100.00
- ----------------------------------------------------------------

Minimum: 16,418
Maximum: 850,000
Average: 120,602

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

4. Current Mortgage Interest Rate(%)
- ------------------------------------------------------------
Current                          Number of        Scheduled
Mortgage Interest                Mortgage         Principal
Rate(%)                          Loans(%)         Balance(%)
- ------------------------------------------------------------
5.51 - 6.00                          0.05               0.09
- ------------------------------------------------------------
6.01 - 6.50                          0.05               0.05
- ------------------------------------------------------------
6.51 - 7.00                          0.05               0.14
- ------------------------------------------------------------
7.01 - 7.50                          0.19               0.18
- ------------------------------------------------------------
7.51 - 7.75                          0.34               0.38
- ------------------------------------------------------------
7.76 - 8.00                          1.11               1.57
- ------------------------------------------------------------
8.01 - 8.25                          1.44               1.60
- ------------------------------------------------------------
8.26 - 8.50                          2.31               3.35
- ------------------------------------------------------------
8.51 - 8.75                          3.85               5.51
- ------------------------------------------------------------
8.76 - 9.00                          5.78               6.36
- ------------------------------------------------------------
9.01 - 9.25                          5.58               6.58
- ------------------------------------------------------------
9.26 - 9.50                          6.93               8.19
- ------------------------------------------------------------
9.51 - 9.75                          8.14               8.84
- ------------------------------------------------------------
9.76 - 10.00                        13.29              15.01
- ------------------------------------------------------------
10.01 - 10.25                        6.45               5.85
- ------------------------------------------------------------
10.26 - 10.50                       10.54              10.08
- ------------------------------------------------------------
10.51 - 10.75                        7.61               5.99
- ------------------------------------------------------------
10.76 - 11.00                        9.10               8.13
- ------------------------------------------------------------
11.01 - 11.25                        3.61               2.63
- ------------------------------------------------------------
11.26 - 11.50                        3.80               2.99
- ------------------------------------------------------------
11.51 - 11.75                        2.70               1.88
- ------------------------------------------------------------
11.76 - 12.00                        2.84               1.93
- ------------------------------------------------------------
12.01 - 12.25                        1.16               0.83
- ------------------------------------------------------------
12.26 - 12.50                        1.54               0.88
- ------------------------------------------------------------
12.51 - 12.75                        0.72               0.48
- ------------------------------------------------------------
12.76 - 13.00                        0.58               0.29
- ------------------------------------------------------------
13.01 - 13.25                        0.14               0.15
- ------------------------------------------------------------
13.26 - 13.50                        0.05               0.05
- ------------------------------------------------------------
13.76 - 14.00                        0.05               0.01
- ------------------------------------------------------------
Total:                             100.00             100.00
- ------------------------------------------------------------

Minimum: 5.8500
Maximum: 13.8900
Weighted Average: 9.9773


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

5. Maximum Lifetime Mortgage Interest Rate(%)

- -------------------------------------------------------------
Maximum Lifetime                 Number of        Scheduled
Mortgage Interest                Mortgage         Principal
Rate(%)                          Loans(%)         Balance(%)
- ------------------------------------------------------------
12.500 - 12.999                       0.10              0.23
- ------------------------------------------------------------
13.000 - 13.499                       0.14              0.13
- ------------------------------------------------------------
13.500 - 13.999                       1.01              1.19
- ------------------------------------------------------------
14.000 - 14.499                       1.59              2.21
- ------------------------------------------------------------
14.500 - 14.999                       5.49              6.48
- ------------------------------------------------------------
15.000 - 15.499                       8.14              9.06
- ------------------------------------------------------------
15.500 - 15.999                      14.16             17.35
- ------------------------------------------------------------
16.000 - 16.499                       8.86              9.02
- ------------------------------------------------------------
16.500 - 16.999                      19.02             19.23
- ------------------------------------------------------------
17.000 - 17.499                      10.35              9.96
- ------------------------------------------------------------
17.500 - 17.999                      16.08             14.00
- ------------------------------------------------------------
18.000 - 18.499                       5.83              4.73
- ------------------------------------------------------------
18.500 - 18.999                       5.34              3.87
- ------------------------------------------------------------
19.000 - 19.499                       2.12              1.47
- ------------------------------------------------------------
19.500 - 19.999                       1.49              0.86
- ------------------------------------------------------------
20.000 - 20.499                       0.24              0.18
- ------------------------------------------------------------
20.500 - 20.999                       0.05              0.05
- ------------------------------------------------------------
Total:                              100.00            100.00
- ------------------------------------------------------------

Minimum: 12.7400
Maximum: 20.5000
Weighted Average: 16.5637



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

6. Minimum Lifetime Mortgage Interest Rate(%)

- ------------------------------------------------------------
Minimum Lifetime                 Number of        Scheduled
Mortgage Interest                Mortgage         Principal
Rate(%)                          Loans(%)         Balance(%)
- ------------------------------------------------------------
4.500 - 4.999                        0.10               0.19
- ------------------------------------------------------------
5.000 - 5.499                        0.19               0.29
- ------------------------------------------------------------
5.500 - 5.999                        0.34               0.35
- ------------------------------------------------------------
6.000 - 6.499                        0.58               0.83
- ------------------------------------------------------------
6.500 - 6.999                        0.96               1.52
- ------------------------------------------------------------
7.000 - 7.499                        1.11               1.17
- ------------------------------------------------------------
7.500 - 7.999                        2.50               3.02
- ------------------------------------------------------------
8.000 - 8.499                        2.60               2.99
- ------------------------------------------------------------
8.500 - 8.999                        8.96              10.90
- ------------------------------------------------------------
9.000 - 9.499                        9.63              11.25
- ------------------------------------------------------------
9.500 - 9.999                       21.57              24.36
- ------------------------------------------------------------
10.000 - 10.499                     13.24              12.51
- ------------------------------------------------------------
10.500 - 10.999                     19.64              16.93
- ------------------------------------------------------------
11.000 - 11.499                      7.27               5.96
- ------------------------------------------------------------
11.500 - 11.999                      6.74               4.83
- ------------------------------------------------------------
12.000 - 12.499                      2.55               1.69
- ------------------------------------------------------------
12.500 - 12.999                      1.69               0.99
- ------------------------------------------------------------
13.000 - 13.499                      0.24               0.18
- ------------------------------------------------------------
13.500 - 13.999                      0.10               0.06
- ------------------------------------------------------------
Total:                             100.00             100.00
- ------------------------------------------------------------

Minimum: 4.9500
Maximum: 13.8900
Weighted Average: 9.831484


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

7. Next Interest Adjustment Date

- ----------------------------------------------------------
                                 Number of       Scheduled
Next Interest                    Mortgage        Principal
Adjustment Date                  Loans(%)        Balance(%)
- -----------------------------------------------------------
1999-12                              0.10              0.17
- -----------------------------------------------------------
2000-01                              0.14              0.19
- -----------------------------------------------------------
2000-02                              0.10              0.16
- -----------------------------------------------------------
2000-03                              0.43              0.42
- -----------------------------------------------------------
2000-04                              0.34              0.44
- -----------------------------------------------------------
2000-05                              0.29              0.37
- -----------------------------------------------------------
2000-08                              0.10              0.08
- -----------------------------------------------------------
2000-09                              0.10              0.17
- -----------------------------------------------------------
2000-10                              0.43              0.81
- -----------------------------------------------------------
2000-11                              0.29              0.38
- -----------------------------------------------------------
2001-02                              0.05              0.01
- -----------------------------------------------------------
2001-03                              0.05              0.05
- -----------------------------------------------------------
2001-04                              0.43              0.81
- -----------------------------------------------------------
2001-05                              1.49              1.62
- -----------------------------------------------------------
2001-06                              1.11              1.51
- -----------------------------------------------------------
2001-07                              4.24              4.26
- -----------------------------------------------------------
2001-08                              5.68              5.61
- -----------------------------------------------------------
2001-09                             14.40             13.05
- -----------------------------------------------------------
2001-10                             14.54             13.34
- -----------------------------------------------------------
2001-11                              6.40              6.19
- -----------------------------------------------------------
2001-12                              0.10              0.05
- -----------------------------------------------------------
2002-02                              0.05              0.10
- -----------------------------------------------------------
2002-04                              0.29              0.26
- -----------------------------------------------------------
2002-05                              0.14              0.18
- -----------------------------------------------------------
2002-06                              0.43              0.35
- -----------------------------------------------------------
2002-07                              0.96              1.18
- -----------------------------------------------------------
2002-08                              3.76              3.99
- -----------------------------------------------------------
2002-09                             11.31             12.48
- -----------------------------------------------------------
2002-10                             16.75             17.04
- -----------------------------------------------------------
2002-11                             14.54             13.88
- -----------------------------------------------------------
2002-12                              0.96              0.85
- -----------------------------------------------------------
Total:                             100.00            100.00
- -----------------------------------------------------------

Minimum: 1999-12-01
Maximum: 2002-12-01
Weighted Average: 2002-02-27



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

8. Gross Margin (%)

- --------------------------------------------------------------
                                   Number of         Scheduled
                                    Mortgage         Principal
Gross Margin (%)                     Loans(%)       Balance(%)
- --------------------------------------------------------------
3.000 - 3.999                           0.24              0.21
- --------------------------------------------------------------
4.000 - 4.999                           3.71              4.26
- --------------------------------------------------------------
5.000 - 5.999                          23.25             27.15
- --------------------------------------------------------------
6.000 - 6.999                          46.65             45.77
- --------------------------------------------------------------
7.000 - 7.999                          23.50             20.84
- --------------------------------------------------------------
8.000 - 8.999                           2.50              1.69
- --------------------------------------------------------------
9.000 - 9.999                           0.14              0.09
- --------------------------------------------------------------
Total:                                100.00            100.00
- --------------------------------------------------------------

Minimum: 3.7500
Maximum: 9.6500
Weighted Average: 6.2790


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

9. Original Loan-to-Value Ratio (%)

- -----------------------------------------------------------
Original                         Number of       Scheduled
Loan-to-Value                    Mortgage        Principal
Ratio (%)                        Loans(%)        Balance(%)
- -----------------------------------------------------------
15.001 - 20.000                      0.05              0.01
- -----------------------------------------------------------
20.001 - 25.000                      0.10              0.13
- -----------------------------------------------------------
25.001 - 30.000                      0.10              0.06
- -----------------------------------------------------------
30.001 - 35.000                      0.29              0.19
- -----------------------------------------------------------
35.001 - 40.000                      0.34              0.21
- -----------------------------------------------------------
40.001 - 45.000                      0.34              0.19
- -----------------------------------------------------------
45.001 - 50.000                      1.06              1.01
- -----------------------------------------------------------
50.001 - 55.000                      1.20              1.06
- -----------------------------------------------------------
55.001 - 60.000                      2.26              2.44
- -----------------------------------------------------------
60.001 - 65.000                      5.15              3.96
- -----------------------------------------------------------
65.001 - 70.000                      7.22              6.56
- -----------------------------------------------------------
70.001 - 75.000                     10.93             10.95
- -----------------------------------------------------------
75.001 - 80.000                     27.44             27.60
- -----------------------------------------------------------
80.001 - 85.000                     21.43             22.05
- -----------------------------------------------------------
85.001 - 90.000                     21.43             22.89
- -----------------------------------------------------------
90.001 - 95.000                      0.67              0.68
- -----------------------------------------------------------
Total:                             100.00            100.00
- -----------------------------------------------------------

Minimum: 17.59
Maximum: 95.00
Weighted Average by Original Balance: 79.7812
Weighted Average by Current Balance: 79.7809


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

10. Occupancy Type

- --------------------------------------------------------------
                                   Number of        Scheduled
                                    Mortgage        Principal
Occupancy Type                      Loans(%)        Balance(%)
- --------------------------------------------------------------
Primary Home                           93.98             95.44
- --------------------------------------------------------------
Second Home                             0.63              0.92
- --------------------------------------------------------------
Investor                                5.39              3.64
- --------------------------------------------------------------
Total:                                100.00            100.00
- --------------------------------------------------------------



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

11. Origination Program

- -----------------------------------------------------------
                                Number of         Scheduled
                                 Mortgage         Principal
Origination Program              Loans(%)        Balance(%)
- -----------------------------------------------------------
Full Documentation                  81.13             79.16
- -----------------------------------------------------------
Limited Documentation                3.71              4.72
- -----------------------------------------------------------
Stated Documentation                15.17             16.12
- -----------------------------------------------------------
Total:                             100.00            100.00
- -----------------------------------------------------------



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

12. Mortgage Loan Purpose

- --------------------------------------------------------------
                                   Number of        Scheduled
                                   Mortgage         Principal
Mortgage Loan Purpose               Loans(%)        Balance(%)
- --------------------------------------------------------------
Purchase                               42.13             40.34
- --------------------------------------------------------------
Refinance (cash-out)                   47.18             48.25
- --------------------------------------------------------------
Refinance (no cash-out)                10.69             11.41
- --------------------------------------------------------------
Total:                                100.00            100.00
- --------------------------------------------------------------



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

13. Property Type

- --------------------------------------------------------------
                                   Number of        Scheduled
                                    Mortgage        Principal
Property Type                       Loans(%)        Balance(%)
- --------------------------------------------------------------
Single Family Residence                 0.05              0.05
- --------------------------------------------------------------
Single Family Attached                  1.73              1.21
- --------------------------------------------------------------
Single Family Detached                 78.38             78.35
- --------------------------------------------------------------
Townhouses                              0.53              0.54
- --------------------------------------------------------------
Low-Rise Condo                          5.10              4.33
- --------------------------------------------------------------
High-Rise Condo                         0.29              0.18
- --------------------------------------------------------------
2-4 Family                              5.34              5.10
- --------------------------------------------------------------
PUD                                     6.21              8.85
- --------------------------------------------------------------
Manufactured Housing                    2.36              1.39
- --------------------------------------------------------------
Total:                                100.00            100.00
- --------------------------------------------------------------



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

14. Loan Types

- ----------------------------------------------------------
                                 Number of      Scheduled
                                 Mortgage        Principal
Loan Types                       Loans(%)       Balance(%)
- ----------------------------------------------------------
One Year CMT                        0.58              1.07
- ----------------------------------------------------------
2/28 LIBOR                         48.87             46.96
- ----------------------------------------------------------
3/27 LIBOR                         49.11             50.23
- ----------------------------------------------------------
Six Month LIBOR                     1.35              1.67
- ----------------------------------------------------------
3/27 One Year CMT                   0.10              0.07
- ----------------------------------------------------------
Total:                            100.00            100.00
- ----------------------------------------------------------



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


15. Remaining Amortization Term (Months)

- ----------------------------------------------------------
Remaining                        Number of       Scheduled
Amortization                     Mortgage        Principal
Term (Months)                    Loans(%)        Balance(%)
- -----------------------------------------------------------
337 - 348                            0.58              0.76
- -----------------------------------------------------------
349 - 360                           99.42             99.24
- -----------------------------------------------------------
Total:                             100.00            100.00
- -----------------------------------------------------------

Minimum: 341
Maximum: 360
Weighted Average: 358.23854159


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

16. State Distribution of Mortgage Premises

- ----------------------------------------------------------
                                 Number of      Scheduled
State Distribution               Mortgage       Principal
of Mortgage Premises             Loans(%)       Balance(%)
- ----------------------------------------------------------
Alaska                              0.39              0.34
- ----------------------------------------------------------
Arizona                             2.94              2.39
- ----------------------------------------------------------
Arkansas                            0.63              0.40
- ----------------------------------------------------------
California                         19.55             28.35
- ----------------------------------------------------------
Colorado                            4.77              5.57
- ----------------------------------------------------------
Connecticut                         1.11              1.16
- ----------------------------------------------------------
Delaware                            0.34              0.31
- ----------------------------------------------------------
Florida                             3.90              3.22
- ----------------------------------------------------------
Georgia                             2.02              2.12
- ----------------------------------------------------------
Hawaii                              1.06              2.09
- ----------------------------------------------------------
Idaho                               1.06              0.62
- ----------------------------------------------------------
Illinois                            6.16              6.57
- ----------------------------------------------------------
Indiana                             2.55              1.40
- ----------------------------------------------------------
Iowa                                0.58              0.38
- ----------------------------------------------------------
Kansas                              0.82              0.71
- ----------------------------------------------------------
Kentucky                            1.30              0.86
- ----------------------------------------------------------
Louisiana                           0.87              0.64
- ----------------------------------------------------------
Maine                               0.10              0.03
- ----------------------------------------------------------
Maryland                            1.06              1.23
- ----------------------------------------------------------
Massachusetts                       0.67              0.83
- ----------------------------------------------------------
Michigan                            5.06              3.45
- ----------------------------------------------------------
Minnesota                           2.17              1.85
- ----------------------------------------------------------
Mississippi                         0.34              0.24
- ----------------------------------------------------------
Missouri                            2.65              1.77
- ----------------------------------------------------------
Montana                             0.10              0.10
- ----------------------------------------------------------
Nebraska                            0.05              0.02
- ----------------------------------------------------------
Nevada                              1.16              0.99
- ----------------------------------------------------------
New Hampshire                       0.10              0.07
- ----------------------------------------------------------
New Jersey                          0.82              0.86
- ----------------------------------------------------------
New Mexico                          0.82              0.77
- ----------------------------------------------------------
New York                            0.91              1.31
- ----------------------------------------------------------
North Carolina                      2.89              2.02
- ----------------------------------------------------------
North Dakota                        0.10              0.07
- ----------------------------------------------------------
Ohio                                5.58              3.63
- ----------------------------------------------------------
Oklahoma                            1.11              0.85
- ----------------------------------------------------------
Oregon                              2.99              3.07
- ----------------------------------------------------------
Pennsylvania                        2.36              1.93
- ----------------------------------------------------------
Rhode Island                        0.24              0.21
- ----------------------------------------------------------
South Carolina                      0.39              0.32
- ----------------------------------------------------------
Tennessee                           1.16              1.00
- ----------------------------------------------------------
Texas                               5.54              4.69
- ----------------------------------------------------------
Utah                                2.26              2.02
- ----------------------------------------------------------
Vermont                             0.05              0.04
- ----------------------------------------------------------
Virginia                            2.65              3.40
- ----------------------------------------------------------
Washington                          4.72              4.95
- ----------------------------------------------------------
West Virginia                       0.24              0.11
- ----------------------------------------------------------
Wisconsin                           1.69              0.98
- ----------------------------------------------------------
Wyoming                             0.05              0.06
- ----------------------------------------------------------
Total:                             100.00           100.00
- ----------------------------------------------------------


<PAGE>

Item 6.  Resignations of Registrant's Directors.  Not Applicable.

Item 7.  Financial Statements and Exhibits
         (a)  Financial statements of businesses acquired.  Not Applicable.
         (b)  Pro forma financial information.  Not Applicable.
         (c)  Exhibits

          Exhibit 1.  Underwriting Agreement dated November 17, 1999, among
Saxon Asset Securities Company, Saxon Mortgage Inc. and Morgan Stanley & Co.
Incorporated.

          Exhibit 2.  Trust Agreement dated November 1, 1999, among Saxon Asset
Securities Company, Saxon Mortgage, Inc., as Master Servicer, and Chase Bank of
Texas, National Association, as Trustee.

Item 8.  Change in Fiscal Year.  Not Applicable.

Item 9.  Sales of Equity Securities Pursuant to Regulation S.  Not Applicable.
<PAGE>

SIGNATURES

     Pursuant to the requirements of the Securities Exchange Act of 1934, the
registrant has duly caused this report to be signed on its behalf by the
undersigned thereunto duly authorized.

                                        SAXON ASSET SECURITIES COMPANY


                                        By:  /s/ Bradley D. Adams
                                            ----------------------------------
                                            Bradley D. Adams, Vice President


December 6, 1999
<PAGE>

                               INDEX TO EXHIBITS

1         Underwriting Agreement dated November 17, 1999, among Saxon Asset
          Securities Company, Saxon Mortgage Inc. and Morgan Stanley & Co.
          Incorporated.

2         Trust Agreement dated November 1, 1999, among Saxon Asset Securities
          Company, Saxon Mortgage, Inc., as Master Servicer, and Chase Bank of
          Texas, National Association, as Trustee.

<PAGE>

                         Saxon Asset Securities Company
                    Mortgage Loan Asset Backed Certificates,
                                 Series 1999-4

                             UNDERWRITING AGREEMENT
                             ----------------------

                                                       Dated:  November 17, 1999

To:  Saxon Asset Securities Company (the "Company")

     Saxon Mortgage Inc. ("SMI")

Re:  Standard Terms to Underwriting Agreement (June 1997 Edition)

Series
Designation:  Mortgage Loan Asset Backed Certificates, Series 1999-4, Class
- -----------   AV-1, Class MV-1, Class MV-2 and Class BV-1 Certificates are
              referred to herein as the "Underwritten Certificates."


          Underwriting Agreement: Subject to the terms and conditions set forth
and incorporated by reference herein, the Company hereby agrees to issue and
sell to Morgan Stanley & Co. Incorporated (the "Underwriter"), and the
Underwriter hereby agrees to purchase from the Company, on or about November 22,
1999, the Underwritten Certificates at the purchase price and on the terms set
forth below; provided, however, that the obligations of the Underwriters are
             --------  -------
subject to: (i) receipt by the Company of (a) the ratings specified in the table
below by Moody's Investors Service, Inc. ("Moody's") and Standard & Poors Rating
Services, a division of the McGraw-Hill Companies, Inc.. ("S&P" and together
with Moody's, the "Rating Agencies") with respect to each of the Classes of
Certificates; (ii) receipt of a Prospectus Supplement in form and substance
satisfactory to the Underwriter; and (iii) the Sales Agreement dated as of
November 17, 1999 by and between the Company and Saxon Mortgage, Inc. ("SMI")
and the Trust Agreement (as defined below) each being in form and substance
satisfactory to the Underwriter.

          The Certificates will be issued pursuant to a Trust Agreement,dated as
of November 1, 1999 (the "Trust Agreement"), by and among the Company, SMI, as
Master Servicer (the "Master Servicer"), and Chase Bank of Texas, National
Association, as Trustee (the "Trustee"). The Certificates will represent in the
aggregate the entire beneficial ownership interest in the assets of the Trust
created under the Trust Agreement (the "Trust"), which will consist primarily of
a pool of conventional, one- to four-family, mortgage loans (the "Mortgage
Loans") with original terms to stated maturity of not more than 30 years which
have the characteristics described in the Prospectus Supplement.
<PAGE>

          The Company and SMI specifically covenant to make available on the
Closing Date for sale, transfer and assignment to the Trust, Mortgage Loans
having the characteristics described in the Prospectus Supplement; provided,
                                                                   --------
however, that there may be immaterial variances from the description of the
- -------
Mortgage Loans in the Prospectus Supplement and the actual Mortgage Loans
delivered on the Closing Date.  Upon delivery of the Mortgage Loans to the
Company, the Company will deliver such Mortgage Loans to the Trust.

          Registration Statement:  References in the Agreement (as defined
below) to the Registration Statement shall be deemed to include registration
statement no. 333-87351.

          Aggregate Scheduled Principal Balance of Initial Mortgage Loans:
Approximately $250,489,795.16 (as of the Statistical Cut-off Date) of Variable
Rate Mortgage Loans.  In addition, approximately $119,510,204.84 will be
deposited into the Pre-Funding Account.

          Statistical Cut-Off Date:  As of the close of business November 1,
1999.

                                       2
<PAGE>

            Terms of the Certificates:

<TABLE>
<CAPTION>
- ----------------------------------------------------------------------------------------------------------------
                            Initial                           Proposed
Series 1999-4              Principal      Pass-Through       Ratings by     CUSIP Number        Sale of the
Designation                  Amount           Rate        Moody's and S&P                      Certificates

- ----------------------------------------------------------------------------------------------------------------
<S>                       <C>           <C>               <C>               <C>           <C>
Class AV-1                $303,437,000       %(2)(3)          Aaa/AAA       805564 EU 1             (1)
- ----------------------------------------------------------------------------------------------------------------
Class MV-1                $ 27,568,000       %(2)(3)          Aa2/AA        805564 EV 9             (1)
- ----------------------------------------------------------------------------------------------------------------
Class MV-2                $ 20,340,000       %(2)(3)           A2/A         805564 EW 7             (1)
- ----------------------------------------------------------------------------------------------------------------
Class BV-1                $ 10,000,000       %(2)(3)         Baa2/BBB       805564 EX 5             (1)
- ----------------------------------------------------------------------------------------------------------------
Class R                       N/A           N/A                 (4)             N/A                 (5)
- ----------------------------------------------------------------------------------------------------------------
</TABLE>
- -------------------------
(1)  The Underwritten Certificates will be purchased by the Underwriter from the
     Company and will be offered by the Underwriter to the public from time to
     time in negotiated transactions or otherwise at varying prices to be
     determined at the time of sale.

(2)  On each Distribution Date, the Variable Rate Pass-Through Rates per annum
     will equal the least of:  (i) One Month LIBOR plus the related spread; (ii)
     the weighted average of, the maximum lifetime Mortgage Interest Rates on
     the Mortgage Loans, less the Servicing Fee Rate and Master Servicing Fee
     Rate; and (iii) the Available Funds Cap (as further described in the
     Prospectus Supplement).

(3)  The Applicable Spread for these Classes are subject to adjustment on or
     after the Step-Up Date, as further described in the Prospectus Supplement.

(4)  No ratings have been requested by the Underwriter for the Class R
     Certificates.

(5)  The Class R Certificates will be sold to the Company in a privately
     negotiated transaction.

          Underwritten Certificates Ratings:  It is agreed that as a further
condition of the Underwriter's obligation to purchase the Underwritten
Certificates, the ratings indicated above by the Rating Agencies on the
Underwritten Certificates shall not have been rescinded and there shall not have
occurred any downgrading, or public notification of a possible downgrading or
public notice of a possible change, without indication of direction, in the
ratings accorded the Underwritten Certificates.

          Mortgage Loans: Mortgage Loans having the approximate characteristics
described in the Prospectus Supplement with the final schedule attached as
Schedule I to the Trust Agreement.

          Principal and Interest Distribution Dates:  Each Distribution Date
shall be the 25th day of each month, or if such day is not a business day, the
next succeeding business day, commencing in December 1999.

          REMIC Election:  One or more elections will be made to treat the
Mortgage Loans and related assets of the Trust as a real estate mortgage
investment conduit (the "REMIC").  The Underwritten Certificates will be
designated as "regular interests" in the REMIC.  The Class R Certificates will
be designated as the "residual interest" in the REMIC.

                                       3
<PAGE>

          Purchase Price: The Underwriter hereby agrees to purchase each
Class of Underwritten Certificates from the Company at the applicable purchase
price set forth below. Each such purchase price is expressed as a percentage of
the initial principal amount of the Mortgage Loan pool.


                                               Purchase Price
                                               --------------
                Class AV-1                             99.75%
                Class MV-1                             99.75%
                Class MV-2                             99.75%
                Class BV-1                             99.75%

          Closing Date and Location:  10:00 a.m.  Eastern Time on or about
November 22, 1999, at the offices of McGuire, Woods, Battle & Boothe LLP, One
James Center, 901 E. Cary Street, Richmond, VA 23219.  The Company will deliver
the Underwritten Certificates in book-entry form only through the same day funds
settlement system of the relevant Depositories, and the Class R Certificates in
certificated, fully registered form on or about November 22, 1999.

          Due Diligence:  At any time prior to the Closing Date, the Underwriter
has the right to inspect the Mortgage Loan files, the related mortgaged
properties and the loan origination procedures to ensure conformity with the
Prospectus and the Prospectus Supplement.

          Controlling Agreement:  This Underwriting Agreement, together with the
Standard Terms to Underwriting Agreement (June 1997 Edition) (together, the
"Agreement"), completely sets forth the agreements between the Company and SMI
and the Underwriter and fully supersedes all prior agreements, both written and
oral, relating to the issuance of the Underwritten Certificates and all matters
set forth herein.  Capitalized terms used herein and not otherwise defined
herein shall have the meanings assigned to such terms in the Agreement.
Notwithstanding the foregoing, the Standard Terms are hereby amended for
purposes of the Agreement such that there shall be added to the final sentence
of Section 1(ii) thereof the words ", the Trustee, DTC," immediately following
the phrase "any Credit Enhancer" therein.

          Information Provided by the Underwriter:  It is understood and agreed
that the information set forth under the heading "Underwriting" in the
Prospectus Supplement is the only information furnished by the Underwriter to
the Company for inclusion in the Registration Statement and the Final
Prospectus.

          Collateral Term Sheets, Structural Term Sheets and Computational
Materials:  The Underwriter hereby represents and warrants that (i) a hard copy
of the information provided by the Underwriter to the Company in electronic form
and attached hereto as Exhibit A, if any, constitutes all "Collateral Term
Sheets" or "Structural Term Sheets" (that are required to be filed with the
Commission within two business days of first use under the terms of the Public
Securities Association letter) disseminated by the Underwriter to investors in
connection with the Underwritten Certificates and (ii) a hard copy of the
information provided by the Underwriter to the Company and attached hereto as
Exhibit B, if any, constitutes all

                                       4
<PAGE>

"Computational Materials" disseminated by the Underwriter in connection with the
Underwritten Certificates.

          Trustee:  Chase Bank of Texas, National Association will act as
Trustee of the Trust.

          Blue Sky Qualifications:  The Underwriter specifies, and the parties
intend to qualify the Underwritten Certificates in, no jurisdictions pursuant to
the Agreement.

          State Law Tax Opinion:  At Closing, the Underwriter shall have
received from Locke, Liddell & Sapp LLP an opinion dated the Closing Date and
satisfactory in form and substance to the Underwriter, as to the tax treatment
of the Certificates under Texas law.

          Applicable Law:  THE AGREEMENT SHALL BE GOVERNED BY AND CONSTRUED IN
ACCORDANCE WITH THE LAWS OF THE STATE OF NEW YORK WITHOUT REGARD TO PRINCIPLES
OF CONFLICTS OF LAWS.

          Notices:  All communications hereunder, if sent to the Underwriter,
will be mailed, delivered or telegraphed and confirmed to Morgan Stanley & Co.
Incorporated, 1585 Broadway, New York, New York 10036, Attention:  Jessica
Bellamy.

                             *    *    *    *    *

                                       5
<PAGE>

          The Underwriter agrees, subject to the terms and provisions of the
Agreement, a copy of which is attached, and which is incorporated by reference
herein in its entirety and made a part hereof to the same extent as if such
provisions had been set forth in full herein, to purchase the Underwritten
Certificates.

                              MORGAN STANLEY & CO. INCORPORATED
                              on behalf of the Underwriters

                              By:/s/  Valerie H. Kay
                                 ------------------------------------
                                 Name: Valerie H. Kay
                                 Title: Vice President

Accepted and Acknowledged
 As of the Date First Above
 Written:

SAXON ASSET SECURITIES COMPANY

By:  /s/  Bradley D. Adams
   ---------------------------------
  Name:   Bradley D. Adams
  Title:  Senior Vice President

SAXON MORTGAGE, INC.

By:  /s/  Bradley D. Adams
   ---------------------------------
  Name:   Bradley D. Adams
  Title:  Senior Vice President



                                       6

<PAGE>

                      SAXON ASSET SECURITIES TRUST 1999-4

                    MORTGAGE LOAN ASSET BACKED CERTIFICATES



                                 SERIES 1999-4



                                TRUST AGREEMENT


                         dated as of November 1, 1999


                                     among


                        SAXON ASSET SECURITIES COMPANY,

                                 as Depositor


                             SAXON MORTGAGE, INC.,

                              as Master Servicer


                                      and


                  CHASE BANK OF TEXAS, NATIONAL ASSOCIATION,

                                  as Trustee
<PAGE>

                               TABLE OF CONTENTS


<TABLE>
<S>                                                                               <C>
Article I Definitions.........................................................      1

 Section 1.01.  Standard Terms; Section References............................      1
 Section 1.02.  Defined Terms.................................................      3

Article II Formation of Trust; Conveyance of Mortgage Loans...................     12

 Section 2.01.  Conveyance of Mortgage Loans..................................     12
 Section 2.02.  Purchase of Subsequent Mortgage Loans.........................     12
 Section 2.03.  Pre-Funding Account and Capitalized Interest Account..........     14

Article III REMITTING TO CERTIFICATEHOLDERS...................................     15

 Section 3.01.  Certificate Distributions.....................................     15
 Section 3.02.  Reports to the Depositor and the Trustee:.....................     16
 Section 3.03.  Reports by Master Servicer....................................     17

Article IV The Certificates...................................................     18

 Section 4.01.  The Certificates..............................................     18
 Section 4.02.  Denominations.................................................     18

Article V Miscellaneous Provisions............................................     19

 Section 5.01.  Request for Opinions..........................................     19
 Section 5.02.  Form of Certificates; Schedules and Exhibits; Governing Law...     19
 Section 5.03.  REMIC Administration..........................................     19
 Section 5.04.  Optional Termination..........................................     19
 Section 5.05.  Master Servicer; Certificate Registrar and Paying Agent.......     20
</TABLE>

<PAGE>

Schedule I:    The Mortgage Loans
Schedule II:   Sales Agreement and Servicing Agreement
Schedule III:  Form of Subsequent Sales Agreement
Exhibit AV     1:    Form of Class AV-1 Certificate
Exhibit MV:    1:    Form of Class MV-1 Certificate
               2:    Form of Class MV-2 Certificate
Exhibit BV:    1:    Form of Class BV-1 Certificate
Exhibit R:           Form of Class R Certificate
Exhibit I:           Reportable Exceptions
Exhibit J:           Form of Remittance Agency Agreement
Exhibit K:           Form of Security Release Certification
<PAGE>

                                TRUST AGREEMENT

     THIS TRUST AGREEMENT dated as of November 1, 1999 (this "Agreement"), among
SAXON ASSET SECURITIES COMPANY, a Virginia corporation (the "Depositor"), SAXON
MORTGAGE, INC., a Virginia corporation, as Master Servicer (the "Master
Servicer"), and CHASE BANK OF TEXAS, NATIONAL ASSOCIATION, a national banking
association, as Trustee, under this Agreement and the Standard Terms to Trust
Agreement (July 1998 Edition) (the "Standard Terms"), all the provisions of
which, unless otherwise specified herein, are incorporated herein and shall be a
part of this Agreement as if set forth herein in full (this Agreement with the
Standard Terms so incorporated, the "Trust Agreement").

                            PRELIMINARY STATEMENT

    The Board of Directors of the Depositor has duly authorized the formation of
a trust (the "Trust") to issue a series of asset backed certificates with an
aggregate initial Certificate Principal Balance of $370,000,000 to be known as
the Saxon Asset Securities Trust 1999-4, Mortgage Loan Asset Backed
Certificates, Series 1999-4 (the "Certificates"). The Certificates in the
aggregate evidence the entire beneficial ownership in the Trust. The
Certificates consist of the following: the Class AV-1, Class MV-1, Class MV-2,
Class BV-1 and Class R Certificates.

    In accordance with Section 10.01 of the Standard Terms, the Trustee will
make elections to treat certain assets of the Trust as a real estate mortgage
investment conduit for federal income tax purposes.

    NOW, THEREFORE, in consideration of the mutual promises, covenants,
representations and warranties hereinafter set forth, the Depositor, the Master
Servicer and the Trustee agree as follows:

                                   Article I

                                  Definitions

     Section 1.01.  Standard Terms; Section References

     (a)  The Standard Terms prescribe the duties, responsibilities and
obligations of the Depositor, the Master Servicer and the Trustee with respect
to the Certificates. The Depositor, the Master Servicer, and the Trustee agree
to observe and perform such duties, responsibilities and obligations to the
extent they are not inconsistent with the provisions of this Agreement and
acknowledge that, except to the extent inconsistent with the provisions of this
Agreement, the Standard Terms as of the Closing Date, as modified by Sections
1.01 and 1.02 hereof, are and shall be a part of this Agreement to the same
extent as if set forth herein in full.

     (b)  Unless otherwise specified herein, all references in this Agreement to
sections shall mean sections contained in this Agreement.

     (c)  Upon the occurrence of a Trigger Event, the Trustee shall advise the
Certificateholders of that fact and, if requested to do so by the holders of
Certificates representing a majority of the Voting Rights, the Trustee shall
terminate Meritech as the Servicer.

     (d)  The definition of "Guide" in the Standard Terms is amended to read as
          follows:

          "Unless otherwise provided in the Trust Agreement, the SMI
          Underwriting Manual and Shipping Manual, as supplemented and amended
          from time to time through the Closing Date."

     (e)  The definition of "Trustee Mortgage Loan File" in the Standard Terms
is amended to:

          (i)  add the following immediately after the words "original Mortgage
               Note" in subparagraph (a):

               "or lost note affidavits in lieu thereof, provided the total
               original principal balances of such Mortgage Loans evidenced by
               such affidavits do not exceed
<PAGE>

                in the aggregate 5% of the total original principal balances of
                the Mortgage Loans on the Mortgage Loan Schedule,"

          (ii)  add the following immediately after the words "buydown
                agreement" in subparagraph (a) and immediately after the words
                "or riders thereto" in subparagraph (b):

                "in each case as has been identified on the Mortgage Loan
                Schedule"

          (iii) add the following immediately after the words "endorsements from
                the originator" in subparagraph (a) and immediately after the
                words "related Servicer, Trustee or Custodian, as applicable,"
                in subparagraph (c):

                "(provided, however, that SMI may direct such originator to
                endorse the Mortgage Note directly to the Custodian pursuant to
                the Guide)" and

          (iv)  add the following immediately after the words "assignment of the
                Security Instrument" in subparagraph (c) and (d):

                ",regardless of the date of such assignment or the date of the
                acknowledgment thereon,"

     (f)  Section 2.02(a) of the Standard Terms is amended by adding a new
          paragraph at the end thereof, to read as follows:

                In order to facilitate sales and deliveries of Mortgage Loans
          pursuant to the Trust Agreement, the Trustee may execute and deliver
          one or more remittance agency agreements in substantially the form of
          Exhibit J hereto, or such other similar form as may be attached to the
          Trust Agreement (each, a "Remittance Agency Agreement"), and in such
          event the Trustee: (i) shall perform the duties of Remittance Agent
          (as that term is defined in the related Remittance Agency Agreement);
          and (ii) may accept as conclusive evidence of the release of the
          related security interests one or more security release certifications
          in substantially the form attached as Exhibit K hereto, or such other
          similar form as may be attached to the Trust Agreement (each, a
          "Security Release Certification")."

     (g)  Section 2.02(b)(iv) of the Standard Terms is amended to read as
follows:

          "(iv) such documents have been reviewed by it, or by a Custodian on
                its behalf, relate to such Mortgage Loan and are not torn or
                mutilated; and"

     (h)  Section 2.02 of the Standard Terms is amended by adding a new
paragraph (g) immediately following paragraph (f) thereof to read as follows:

          "(g)  During the Custodian's review, the Custodian will report the
          exceptions set forth on Exhibit I hereto and shall be under no duty or
          obligation to report any other exceptions to a Mortgage File. Exhibit
          I may be replaced from time to time with the consent of the Depositor,
          the Trustee and the Master Servicer."

     (i)  Section 2.02(b)(v)(D) of the Standard Terms is amended to add the
following immediately after the words "Instrument from the Seller":

          ", or from the originator of the related Mortgage Loan to the
          Custodian as the case may be,"

     (j)  Section 3.06 of the Standard Terms is amended by adding a new
paragraph at the end to read as follows:

          "The Master Servicer or Servicer may provide an electronic
     transmission for release of documents in a form which complies in all
     respects to the requirements of FNMA or GNMA or in a form mutually
     acceptable to the Custodian and either the Master Servicer or Servicer, and
     is
                                       2
<PAGE>

     agreed to in advance of initial transmission by both the Master Servicer or
     Servicer, as applicable, and the Custodian, containing information readable
     without intervention by the Custodian's data processing operations computer
     hardware and software staff, and arranged in a record layout to be
     specified by the Custodian. The Master Servicer and Servicer agree to
     maintain and control access to electronic signature information and assume
     liability for any unauthorized use thereof. The Master Servicer and
     Servicer also agree to maintain accurate records of electronic transactions
     related to the Mortgage Files. For purposes of this Agreement the term
     "electronic signature" is defined as an "electronic identifier intended by
     the person using it to have the same force and effect as the use of a
     manual signature."

     (k)  Section 8.05 of the Standard Terms is amended to add the following
immediately after the words "or the duties of the Custodian under any custodial
agreement" in the third sentence thereof:

          "(including, but not limited to, the execution and delivery of
          documents in connection with a foreclosure sale, trustee's sale, or
          deed in lieu of foreclosure of a Mortgage Loan, including, but not
          limited to, any deed of reconveyance, any substitution of trustee
          documents or any other documents to release, satisfy, cancel or
          discharge any Security Instrument or Mortgage Loan)"

     Section 1.02.  Defined Terms.

     Capitalized terms used but not defined in this Agreement shall have the
respective meanings assigned to them in Section 1.01 of the Standard Terms. In
addition, the following provisions shall govern the defined terms set forth
below for the Trust Agreement. If a term defined in the Standard Terms is also
defined herein, the definition herein shall control.

     "Accrual Period": With respect to the Certificates and any Distribution
Date, the period commencing on the immediately preceding Distribution Date (or
in the case of the first Distribution Date, the Closing Date) and ending on the
day immediately preceding the current Distribution Date. All calculations of
interest on the Certificates will be made on the basis of the actual number of
days elapsed in the related Accrual Period and in a year of 360 days.

     "Assumed Principal Balance": As of any Distribution Date, the sum of (i)
the Scheduled Principal Balance of the Mortgage Loans as of such Distribution
Date plus (ii) the aggregate amount on deposit in the Pre-Funding Account (less
all amounts representing investment earnings thereon).

     "Assumed Investment Rate": 3.00%.

     "Available Funds Cap": As of any Distribution Date, the weighted average of
the Net Rates on the Mortgage Loans (weighted on the basis of the principal
balances thereof as of the first day of the month preceding the month of such
Distribution Date).

     "Book-Entry Certificates": The Class AV-1, Class MV-1, Class MV-2 and Class
BV-1 Certificates except to the extent provided in Section 5.03 of the Standard
Terms.

     "Capitalized Interest Account": The account created and maintained with the
Paying Agent by the Trust pursuant to Section 2.03.

     "Capitalized Interest Requirement": With respect to each Distribution Date
to and including the Distribution Date immediately following the end of the
Funding Period, the excess of (i) the Current Interest for each Class of
Certificates for such Distribution Date over (ii) one month's interest on the
aggregate Scheduled Principal Balance of the Mortgage Loans calculated at the
weighted average Net Rate for the related Master Servicer Remittance Date.

     "Certificate": Any of the Class AV-1, Class MV-1, Class MV-2, Class BV-1
and Class R Certificates.

     "Certificate Principal Balance": As to any Class of Certificates and any
date of determination, such Class' initial Certificate Principal Balance as
reduced by (i) amounts representing principal previously distributed to such
Class, (ii) the amount of Realized Losses previously allocated to such class and
(iii) amounts representing prepayments from the Pre-Funding Account distributed
to such Class. Any amounts distributed to a Class of Subordinated Certificates
in respect of any Unpaid Realized Loss Amount will not further reduce the
Certificate Principal Balance of such Class.

                                       3
<PAGE>

          "Certificate Registrar": Chase Bank of Texas, National Association, a
national banking association, and its successors and assigns in such capacity.

          "Class": Any of Class AV-1, Class MV-1, Class MV-2, Class BV-1 and
Class R.

     "Class AV-1 Certificate": Any Certificate designated as a "Class AV-1
Certificate" on the face thereof, in the form of Exhibit AV-1 hereto
representing the right to distributions as set forth herein.

     "Class AV-1 Certificate Principal Balance": The Certificate Principal
Balance of the Class AV-1 Certificates.

     "Class AV-1 Certificates Carryover": If on any Distribution Date the Class
AV-1 Pass-Through Rate is based upon the Available Funds Cap, the excess of (i)
the amount of interest the Class AV-1 Certificates would be entitled to receive
on such Distribution Date had the Class AV-1 Pass-Through Rate not been
calculated based on the Available Funds Cap (but not more than the weighted
average of the Maximum Lifetime Mortgage Interest Rates on the Mortgage Loans
less the Servicing Fee Rate and the Master Servicing Fee Rate) over (ii) the
amount of interest such Certificates received on such Distribution Date based on
the Available Funds Cap, together with the unpaid portion of any such excess
from prior Distribution Dates (and interest accrued thereon at the then
applicable Pass-Through Rate, without giving effect to the Available Funds Cap).

     "Class AV-1 Current Interest": With respect to any Distribution Date, the
interest accrued on the Class AV-1 Certificate Principal Balance immediately
prior to such Distribution Date during the related Accrual Period at the Class
AV-1 Pass-Through Rate plus any amount previously distributed with respect to
interest for Class AV-1 that is recovered during the related Accrual Period as a
voidable preference by a trustee in bankruptcy pursuant to a final,
nonappealable order; provided, however, Class AV-1 Current Interest shall not
include any Class AV-1 Certificates Carryover.

     "Class AV-1 Interest Carry Forward Amount": With respect to any
Distribution Date, the sum of (i) the excess of (A) Class AV-1 Current Interest
with respect to prior Distribution Dates (excluding any Class AV-1 Certificates
Carryover) over (B) the amount actually distributed to Class AV-1 with respect
to interest (other than in respect of Class AV-1 Certificate Carryover) on such
prior Distribution Dates and (ii) interest on such excess at the Class AV-1
Pass-Through Rate for the related Accrual Period.

     "Class AV-1 Pass-Through Rate": With respect to any Distribution Date, the
lesser of (x) One Month LIBOR plus, in the case of any Distribution Date prior
to the Initial Optional Termination Date, 0.350% per annum, or in the case of
any Distribution Date that occurs on or after the Initial Optional Termination
Date, plus 0.700% per annum and (y) the Available Funds Cap for such
Distribution Date.

     "Class AV-1 Principal Distribution Amount": With respect to any
Distribution Date before the Stepdown Date or as to which a Trigger Event has
occurred, 100% of the Principal Distribution Amount for such Distribution Date
and with respect to any Distribution Date on or after the Stepdown Date and as
to which a Trigger Event has not occurred, the excess of (i) the Class AV-1
Certificate Principal Balance immediately prior to such Distribution Date over
(ii) the lesser of (A) 55.12% of the Assumed Principal Balance of on the
preceding Due Date and (B) the excess of (I) the Assumed Principal Balance on
the preceding Due Date over (II) $1,850,000.

     "Class MV-1 Applied Realized Loss Amount": As to any Distribution Date, the
sum of the Realized Losses which have been applied in reduction of the
Certificate Principal Balance of the Class.

     "Class MV-2 Applied Realized Loss Amount": As to any Distribution Date, the
sum of the Realized Losses which have been applied in reduction of the
Certificate Principal Balance of the Class.

                                       4
<PAGE>

M V-1 Certificates pursuant to Section 3.01(e)(iii) hereof.

     "Class MV-1 Certificate": Any Certificate designated as a "Class MV-1
Certificate" on the face thereof, in the form of Exhibit MV-1 hereto
representing the right to distributions as set forth herein.

     "Class MV-1 Certificate Principal Balance": The Certificate Principal
Balance of the Class MV-1 Certificates.

     "Class MV-1 Certificates Carryover": If on any Distribution Date the Class
MV-1 Pass-Through Rate is based upon the Available Funds Cap, the excess of (i)
the amount of interest the Class MV-1 Certificates would be entitled to receive
on such Distribution Date had the Class MV-1 Pass-Through Rate not been
calculated based on the Available Funds Cap (but not more than the weighted
average of the Mortgage Interest Rates on the Mortgage Loans less the Servicing
Fee Rate and the Master Servicing Fee Rate) over (ii) the amount of interest
such Certificates received on such Distribution Date based on the Available
Funds Cap, together with the unpaid portion of any such excess from prior
Distribution Dates (and interest accrued thereon at the then applicable Pass-
Through Rate, without giving effect to the Available Funds Cap).

     "Class MV-1 Current Interest": With respect to any Distribution Date, the
interest accrued on the Class MV-1 Certificate Principal Balance immediately
prior to such Distribution Date during the related Accrual Period at the Class
MV-1 Pass-Through Rate plus any amount previously distributed with respect to
interest for Class MV-1 that is recovered during the related Accrual Period as a
voidable preference by a trustee in bankruptcy pursuant to a final,
nonappealable order; provided, however, Class MV-1 Current Interest shall not
include any Class MV-1 Certificates Carryover.

     "Class MV-1 Interest Carry Forward Amount": With respect to any
Distribution Date, the sum of (i) the excess of (A) Class MV-1 Current Interest
with respect to prior Distribution Dates (excluding any Class MV-1 Certificates
Carryover) over (B) the amount actually distributed to Class MV-1 with respect
to interest (other than in respect of Class MV-1 Certificate Carryover) on such
prior Distribution Dates and (ii) interest on such excess at the Class MV-1
Pass-Through Rate for the related Accrual Period.

     "Class MV-1 Pass-Through Rate": With respect to any Distribution Date, the
lesser of (x) One Month LIBOR plus, in the case of any Distribution Date prior
to the Initial Optional Termination Date, 0.630% per annum, or in the case of
any Distribution Date that occurs on or after the Initial Optional Termination
Date, plus 0.945% per annum and (y) the Available Funds Cap for such
Distribution Date.

     "Class MV-1 Principal Distribution Amount": With respect to any
Distribution Date on and after the Stepdown Date and as long as a Trigger Event
is not in effect (subject to the proviso set forth in Section 3.01(b) hereof),
the excess of (i) the sum of (A) the Class AV-1 Certificate Principal Balance
after giving effect to distributions on such Distribution Date and (B) the Class
MV-1 Certificate Principal Balance immediately prior to such Distribution Date
over (ii) the lesser of (A) 70.02% of the Assumed Principal Balance on the
preceding Due Date and (B) the excess of (I) the Assumed Principal Balance on
the preceding Due Date over (II) $1,850,000.

     "Class MV-1 Unpaid Realized Loss Amount": As to any Distribution Date, the
excess of (i) the Class MV-1 Applied Realized Loss Amount over (ii) the sum of
all amounts distributed to the Class MV-1 Certificates on all previous
Distribution Dates pursuant to Section 3.01(c)(iii) hereof.

MV-2 Certificates pursuant to Section 3.01(e)(ii) hereof.

     "Class MV-2 Certificate": Any Certificate designated as a "Class MV-2
Certificate" on the face thereof, in the form of Exhibit MV-2 hereto
representing the right to distributions as set forth herein.

     "Class MV-2 Certificate Principal Balance": The Certificate Principal
Balance of the Class MV-2 Certificates.

     "Class MV-2 Certificates Carryover": If on any Distribution Date the Class
MV-2 Pass-Through Rate is based upon the Available Funds Cap, the excess of (i)
the amount of interest the Class MV-2 Certificates would be entitled to receive
on such Distribution Date had the Class MV-2 Pass-Through Rate not been
calculated based on the Available Funds Cap (but not more than the weighted
average of the Mortgage Interest Rates on the Mortgage Loans less the Servicing
Fee Rate and the Master Servicing Fee Rate) over (ii) the amount of interest
such Certificates received on such Distribution Date based on the Available
Funds Cap, together with the unpaid portion of any such excess from prior
Distribution Dates (and interest accrued thereon at the then applicable Pass-
Through Rate, without giving effect to the Available Funds Cap).

     "Class MV-2 Current Interest": With respect to any Distribution Date, the
interest accrued on the Class MV-2 Certificate Principal Balance immediately
prior to such Distribution Date during the related Accrual Period at the Class
MV-2 Pass-Through Rate plus any amount previously distributed with respect to
interest for Class MV-2 that is recovered during the related Accrual Period as a
voidable preference by a trustee in bankruptcy pursuant to a final,
nonappealable order; provided, however, Class MV-2 Current Interest shall not
include any Class MV-2 Certificates Carryover.

     "Class MV-2 Interest Carry Forward Amount": With respect to each
Distribution Date, the sum of (i) the excess of (A) Class MV-2 Current Interest
with respect to prior Distribution Dates (excluding any Class MV-2 Certificates
Carryover) over (B) the amount actually distributed to Class MV-2 with respect
to interest (other than in respect of Class MV-2 Certificate Carryover) on such
prior Distribution Dates and (ii) interest on such excess at the Class MV-2
Pass-Through Rate for the related Accrual Period.

     "Class MV-2 Pass-Through Rate": With respect to any Distribution Date, the
lesser of (x) One Month LIBOR plus, in the case of any Distribution Date prior
to the Initial Optional Termination Date, 1.200% per annum, or in the case of
any Distribution Date that occurs on or after the Initial Optional Termination
Date, plus 1.800% per annum and (y) the Available Funds Cap for such
Distribution Date.

     "Class MV-2 Principal Distribution Amount": With respect to any
Distribution Date on and after the Stepdown Date and as long as a Trigger Event
is not in effect (subject to the proviso set forth in Section 3.01(b) hereof),
the excess of (i) the sum of (A) the Class AV-1 Certificate Principal Balance,
(B) the Class MV-2 Certificate Principal Balance, in each case after giving
effect to distributions on such Distribute Date, and (C) the Class MV-2
Certificate Principal Amount immediately prior to such Distribution Date over
(ii) the lesser of (A) 81.02% of the Assumed Principal Balance on the preceding
Due Date and (B) the excess of (I) the Assumed Principal Balance on the
preceding Due Date over (II) $1,850,000.

     "Class MV-2 Unpaid Realized Loss Amount": As to any Distribution Date, the
excess of (i) the Class MV-2 Applied Realized Loss Amount over (ii) the sum of
all amounts distributed to the Class MV-2 Certificates on all previous
Distribution Dates pursuant to Section 3.01(c)(v) hereof.

                                       5
<PAGE>

     "Class BV-1 Applied Realized Loss Amount: As to any Distribution Date, the
sum of the Realized Losses which have been applied in reduction of the
Certificate Principal Balance of the Class BV-1 Certificates pursuant to Section
3.01(e)(i) hereof.

     "Class BV-1 Certificate": Any Certificate designated as a "Class BV-1
Certificate" on the face thereof, in the form of Exhibit BV-1 hereto
representing the right to distributions as set forth herein.

     "Class BV-1 Certificate Principal Balance": The Certificate Principal
Balance of the Class BV-1 Certificates.

     "Class BV-1 Certificates Carryover": If on any Distribution Date the Class
BV-1 Pass-Through Rate is based upon the Available Funds Cap, the excess of (i)
the amount of interest the Class BV-1 Certificates would be entitled to receive
on such Distribution Date had the Class BV-1 Pass-Through Rate not been
calculated based on the Available Funds Cap (but not more than the weighted
average of the Mortgage Interest Rates on the Mortgage Loans less the Servicing
Fee Rate and the Master Servicing Fee Rate) over (ii) the amount of interest
such Certificates received on such Distribution Date based on the Available
Funds Cap, together with the unpaid portion of any such excess from prior
Distribution Dates (and interest accrued thereon at the then applicable Pass-
Through Rate, without giving effect to the Available Funds Cap).

     "Class BV-1 Current Interest": With respect to any Distribution Date, the
interest accrued on the Class BV-1 Certificate Principal Balance immediately
prior to such Distribution Date during the related Accrual Period at the Class
BV-1 Pass-Through Rate plus any amount previously distributed with respect to
interest for Class BV-1 that is recovered during the related Accrual Period as a
voidable preference by a trustee in bankruptcy pursuant to a final,
nonappealable order; provided, however, Class BV-1 Current Interest shall not
include any Class BV-1 Certificates Carryover.

     "Class BV-1 Interest Carry Forward Amount": With respect to each
Distribution Date, the sum of (i) the excess of (A) Class BV-1 Current Interest
with respect to prior Distribution Dates (excluding any Class BV-1 Certificates
Carryover) over (B) the amount actually distributed to Class BV-1 with respect
to interest (other than in respect of Class BV-1 Certificate Carryover) on such
prior Distribution Dates and (ii) interest on such excess at the Class BV-1
Pass-Through Rate for the related Accrual Period.

     "Class BV-1 Pass-Through Rate": With respect to any Distribution Date, the
lesser of (x) One Month LIBOR plus, in the case of any Distribution Date prior
to the Initial Optional Termination Date, 3.000% per annum, or in the case of
any Distribution Date that occurs on or after the Initial Optional Termination
Date, plus 4.500% per annum and (y) the Available Funds Cap for such
Distribution Date.

     "Class BV-1 Principal Distribution Amount": With respect to any
Distribution Date on and after the Stepdown Date and as long as a Trigger Event
is not in effect (subject to the proviso set forth in Section 3.01(b) hereof),
the excess of (i) the sum of (A) the Class AV-1 Certificate Principal Balance,
(B) the Class MV-1 Certificate Principal Balance, (C) the Class MV-2 Certificate
Principal Balance, in each case after giving effect to distributions on such
Distribute Date, and (D) the Class BV-1 Certificate Principal Balance
immediately prior to such Distribution Date over (ii) the lesser of (A) 91.10%
of the Assumed Principal Balance on the preceding Due Date and (B) the excess of
(I) the Assumed Principal Balance on the preceding Due Date over (II)
$1,850,000.

     "Class BV-1 Unpaid Realized Loss Amount": As to any Distribution Date, the
excess of (i) the Class BV-1 Applied Realized Loss Amount over (ii) the sum of
all amounts distributed to the Class BV-1 Certificates on all previous
Distribution Dates pursuant to Section

                                       6
<PAGE>

3.01(c)(vii) hereof.

     "Class R Certificate": Any of the Certificates designated as a "Class R
Certificate" on the face thereof, in the form of Exhibit R hereto and evidencing
an interest designated as the "residual interest" in the REMIC established
hereunder for purposes of the REMIC Provisions.

     "Closing Date": November 22, 1999.

     "Current Interest": As to any Class, the definition therefor having the
corresponding designation as such Class.

     "Custodian": Chase Bank of Texas, National Association, a national banking
association, and its successors and assigns in such capacity.

     "Cut-Off Date": As of the close of business on November 1, 1999.

     "Delinquent": A Mortgage Loan is "Delinquent" if any payment due thereon is
not made by the close of business on the last day of the Prepayment Period
immediately following the day such payment is scheduled to be due. A Mortgage
Loan is "30 days Delinquent" if such payment has not been received by the close
of business on the last day of the Prepayment Period of the month immediately
succeeding the month in which such payment was due. Similarly for "60 days
Delinquent," "90 days Delinquent" and so on.

     "Delinquency Percentage": For each Distribution Date, the Scheduled
Principal Balance of the Mortgage Loans that, as of such Distribution Date, are
60 or more days Delinquent as a percentage of the Scheduled Principal Balance of
the Mortgage Loans.

     "Designated Class": There is no designated Class for purposes of Section
9.02 of the Standard Terms.

     "Distribution Amount": As to each Distribution Date and Class of
Certificates, the aggregate amount to be distributed to such Class on such date
pursuant to Section 3.01 hereof.

     "Distribution Date": The 25th day of each month, or the next Business Day
if such 25th day is not a Business Day, commencing December 27, 1999.

     "Extra Principal Distribution Amount": With respect to any Distribution
Date, to the extent of Interest Funds pursuant to Section 3.01(a)(v), an amount
equal to the excess of (i) the sum of (A) the aggregate Certificate Principal
Balance of the Certificates and (B) prior to the Stepdown Date, 4.45% of the
Assumed Principal Balance as of the Cut-Off Date and (C) on and after the
Stepdown Date, the greater of (x) 8.90% of the Assumed Principal Balance and (y)
0.50% of the Assumed Principal Balance as of the Cut-Off Date over (ii) the
Assumed Principal Balance on the preceding due date.

     "Funding Period": The period commencing on the Closing Date and ending on
the earliest to occur of (i) the date on which the amount on deposit in the Pre-
Funding Account (exclusive of any investment earnings) is less than $100,000,
(ii) the date on which an Event of Default occurs and (iii) February 18, 2000.

     "Initial Capitalized Interest Amount": $1,877,646.

     "Initial Optional Termination Date": The Distribution Date immediately
following the Due Period with respect to which the aggregate Scheduled Principal
Balances of the Mortgage Loans have declined to less than 10% of the sum of (i)
the aggregate Scheduled Principal Balances as of the Cut-Off Date of the
Mortgage Loans acquired by the Trust on the Closing Date and (ii) amounts
deposited into the Pre-Funding Account on the Closing Date.

     "Interest Carry Forward Amount": As to any Class, the definition therefor
having the corresponding designation as such Class.

     "Interest Determination Date": With respect to the first Accrual Period for
the Certificates, November 18, 1999, and with respect to any subsequent Accrual
Period for the Certificates, the second London Business Day preceding such
Accrual Period.

    "Interest Funds": With respect to any Master Servicer Remittance Date, to
the extent actually deposited in the Master Servicer Custodial Account, the sum,
without duplication, of (i) all scheduled interest collected during the related
Due Period less the Servicing Fee and the Master Servicing Fee, (ii) all
Advances relating to interest, (iii) all Month End Interest and (iv)

                                       7
<PAGE>

Liquidation Proceeds (to the extent such Liquidation Proceeds relate to
interest) less all Non-Recoverable Advances relating to interest and expenses
pursuant to Section 6.03 of the Standard Terms.

     "London Business Day": A day on which banks are open for dealing in foreign
currency and exchange in London and New York City.

     "Master Servicer": Saxon Mortgage, Inc., a Virginia corporation, and its
successors and assigns in such capacity.

     "Master Servicer Remittance Date": The Business Day preceding each
Distribution Date.

     "Master Servicer Reporting Date": The opening of business on the third
Business Day preceding each Distribution Date.

     "Master Servicing Fee": With respect to each Master Servicer Remittance
Date, an amount payable (or allocable) to the Master Servicer equal to the
product of one-twelfth of the Master Servicing Fee Rate and the aggregate
Scheduled Principal Balance on the first day of the Due Period preceding such
Master Servicer Remittance Date.

     "Master Servicing Fee Rate": 0.05% per annum.

     "Meritech": Meritech Mortgage Services, Inc., a Texas corporation.

     "Moody's": Moody's Investors Service, Inc., and its successors (99 Church
Street, New York, New York 10007).

     "Mortgage Loans": The mortgage loans listed on Schedule I.

     "Net Rate": As to each Mortgage Loan and Distribution Date, the related
Mortgage Interest Rate less the sum of the Servicing Fee Rate and the Master
Servicing Fee Rate.

     "Notice Address": For purposes of Section 11.05 of the Standard Terms, the
addresses of the Depositor, the Master Servicer and the Trustee, are as follows:

     (i)    If to the Depositor:

               Saxon Asset Securities Company
               4880 Cox Road
               Glen Allen, Virginia 23060

     (ii)   If to the Master Servicer:
               Saxon Mortgage, Inc.
               4880 Cox Road
               Glen Allen, Virginia 23060

     (iii)  If to the Trustee:
               Chase Bank of Texas, National Association
               600 Travis, 10th Floor
               Houston, Texas 77002
               Attention:  Capital Markets Fiduciary Services - Saxon 1999-4

     "One Month LIBOR": As of any Interest Determination Date, the rate for one-
month U.S. dollar deposits which appears in the Telerate Page 3750, as of 11:00
a.m., London time, on such Interest Determination Date. If such rate does not
appear on Telerate Page 3750, the rate for that day will be determined on the
basis of the rates at which deposits in United States dollars are offered by the
Reference Banks at approximately 11:00 a.m., London time, on that day to prime
banks in the London interbank market for a period equal to the relevant Accrual
Period (commencing on the first day of such Accrual Period). The Master Servicer
will request the principal London office of each of the Reference Banks to
provide a quotation of its rate. If at least two such quotations are provided,
the rate for that day will be the arithmetic mean of the quotations. If fewer
than two quotations are provided as requested, the rate for that day will be the
arithmetic mean of the rates quoted by major banks in New York City, selected by
the Master Servicer, at approximately 11:00 a.m., New York City time, on that
day for loans in United States dollars to leading European banks

                                       8
<PAGE>

for a period equal to the relevant Accrual Period (commencing on the first day
of such Accrual Period). The Master Servicer shall review Telerate Page 3750 at
the required time, make the required requests to the principal offices of the
Reference Banks and selections of major banks in New York City and shall
determine the rate which constitutes One Month LIBOR for each Interest
Determination Date.

    "Original Pre-Funded Amount":  $119,510,205.

    "Overcollateralization Amount": With respect to any Distribution Date, the
excess of (i) the Assumed Principal Balance on that Distribution date over (ii)
the aggregate Certificate Principal Balance of the Certificates after giving
effect to principal distributions on such Distribution Date.

     "Overfunded Interest Amount": With respect to each Subsequent Sales Date,
the excess of (i) interest accruing from the related Subsequent Cut-Off Date to
the Distribution Date immediately following the last date on which the Funding
Period may then end on the aggregate Scheduled Principal Balances of the
Subsequent Mortgage Loans acquired by the Trust on such Subsequent Sales Date,
calculated at a rate equal to the weighted average of the Class AV-1 Pass-
Through Rate, the Class MV-1 Pass-Through Rate, the Class MV-2 Pass-Through Rate
and the Class BV-1 Pass-Through Rate over (ii) interest accruing from such
Subsequent Cut-Off Date to such Distribution Date on the aggregate Scheduled
Principal Balances of the Subsequent Mortgage Loans acquired by the Trust on
such Subsequent Sales Date, calculated at the Assumed Investment Rate.

     "Paying Agent": Chase Bank of Texas, National Association, a national
banking association, and its successors and assigns in such capacity.

     "Pre-Funding Account": The account created and maintained with the Paying
Agent by the Trust pursuant to Section 2.03.

     "Pre-Funding Account Earnings": With respect to each Distribution Date to
and including the date immediately preceding the Distribution Date immediately
following the end of the Funding Period, the actual investment earnings during
the related Prepayment Period on the Pre-Funded Amount as calculated by the
Master Servicer (based on information supplied by the Trustee) pursuant to
Section 2.03(c) hereof.

    "Pre-Funded Amount": With respect to any Master Servicer Reporting Date, the
amount remaining on deposit in the Pre-Funding Account (exclusive of any Pre-
Funding Account Earnings).

     "Principal Distribution Amount": With respect to any Distribution Date, the
excess of (A) the sum of (i) the Principal Funds and (ii) the Extra Principal
Distribution Amount, in each case, for such Distribution Date over (B) the
Released Principal Amount. On the Distribution Date in February 2000, the
Principal Distribution Amount will be increased by amounts remaining in the Pre-
Funding Account.

    "Principal Funds": With respect to any Master Servicer Remittance Date, to
the extent actually deposited in the Master Servicer Custodial Account, the sum,
without duplication, of (i) all scheduled principal collected by the Servicers
during the related Due Period or advanced on or before such Master Servicer
Remittance Date, (ii) prepayments collected by the Servicers in the related
Prepayment Period, (iii) the Scheduled Principal Balance of each Mortgage Loan
repurchased by the Depositor, (iv) any Substitution Shortfall, (v) all
Liquidation Proceeds collected by the Servicer during the related Due Period (to
the extent such Liquidation Proceeds related to principal) and (vi) with respect
to the Distribution Date immediately following the end of the Funding Period,
the related Pre-Funded Amount less all non-recoverable Advances relating to
principal reimbursed during the related Due Period.

     "Private Certificate": Any of the Class R Certificates.

     "Private Subordinated Certificate": Any of the Class R Certificates.

     "Public Subordinated Certificate": Any of the Class MV-1, Class MV-2 and
Class BV-1 Certificates.

     "Rating Agency": Each of Moody's and S&P (or, if any such agency or a
successor is no longer in existence, such other nationally recognized
statistical rating agency, or other comparable Person, designated by the
Depositor, notice of which designation shall be given to the Trustee).

     "Realized Loss Percentage": For each Distribution Date, Realized Losses
since the Cut-Off Date with respect to the Mortgage Loans as a percentage of the
Scheduled Principal Balance as of the Cut-Off Date.

                                       9
<PAGE>

     "Reference Banks": Leading banks selected by the Master Servicer and
engaged in transactions in U.S. dollar deposits in the London interbank market.

     "Regular Certificates": Any of the Certificates, which represent the
"Regular Interests" in the REMIC for purposes of the REMIC Provisions.

     "Released Principal Amount": With respect to any Distribution Date (i) if a
Subordinated Trigger Event exists, zero and (ii) if a Subordinated Trigger Event
does not exist, the amount by which the Overcollateralization Amount (assuming
for this purpose that all Principal Funds are distributed as principal on the
Certificates) exceeds the Required Overcollateralization Amount.

     "Remittance Date":  With respect to each Servicing Agreement, the date so
specified therein which date shall in no case be later than the 21st of each
month, or if the 21st of any month does not fall on a Business Day, then the
Business Day immediately preceding the 21st.

     "Required Overcollateralization Amount": With respect to any Distribution
Date (i) prior to the Stepdown Date, 4.45% of the Assumed Principal Balance as
of the Cut-Off Date and (ii) on and after the Stepdown Date, the greater of (x)
the lesser of (I) 4.45% of the Assumed Principal Amount with respect to the Cut-
Off Date and (II) 8.90% of the Assumed Principal Amount on such Distribution
Date and (y) 0.50% of the Assumed Principal Balance as of the Cut-Off Date.

     "Residual Certificates": The Class R Certificates, which represent the
"residual interest" in the REMIC for purposes of the REMIC Provisions.

     "Sales Agreement": The Sales Agreement dated November 17, 1999, between the
Depositor and SMI regarding the sale of the Mortgage Loans.

     "Servicer": Meritech and its permitted successors and assigns.

     "Servicing Agreement": The Servicing Agreement listed on Schedule II hereto
which shall be deemed to be a "Servicing Agreement" for purposes of the Standard
Terms.

     "Servicing Fee": With respect to each Mortgage Loan and each Remittance
Date, the product of (x) one-twelfth of the Servicing Fee Rate and (y) the
aggregate Scheduled Principal Balance of such Mortgage Loan as of the opening of
business on the first day of the Due Period preceding such Remittance Date.

    "Servicing Fee Rate": With respect to each Mortgage Loan, the fixed per
annum rate payable to the Servicer as set out on Schedule I to this Agreement.

     "Servicing Fee Rate": With respect to each Mortgage Loan, the Servicing
Rate specified on Schedule I.

     "S&P": Standard & Poor's Rating Service and its successors (26 Broadway,
12/th/ Floor. New York, New York 10004).

     "State": New York.

     "Stepdown Date": The earlier to occur of (i) the later to occur of (A) the
Distribution Date in December 2002 and (B) the first Distribution Date on which
the Class AV-1 Certificate Principal Balance immediately prior to such
Distribution Date (less the Principal Funds for such Distribution Date) is less
than or equal to 55.12% of the Scheduled Principal Balances and (ii) the
Distribution Date on which the Class AV-1 Certificate Principal Balance has been
reduced to zero.

     "Subordinated Certificates": The Class MV-1, Class MV-2 and Class BV-1
Certificates.

     "Subordinated Trigger Event": Any Distribution Date after the Stepdown Date
on which:

     (a)  Realized Losses since the Cut-Off Date (or, in the case of Subsequent
Mortgage Loans, the Subsequent Cut-off Date) with respect to the Mortgage Loans
as a percentage of the Scheduled Principal Balance as of the Cut-Off Date (or,
in the case of Subsequent Mortgage Loans, the Subsequent Cut-off Date) exceed
the percentage set out below with respect to such Distribution Date:

                                      10
<PAGE>

Distribution Date (inclusive)
- -----------------------------

October 2001 - September 2002       2.00%
October 2002 - September 2003       3.30
October 2003 - September 2004       4.00
October 2004 - September 2005       4.30
October 2005 - September 2006       4.50
October 2006 and thereafter         4.75
and

     (b)  the Scheduled Principal Balance of the Mortgage Loans that, as of such
Distribution Date, are 60 or more days Delinquent as a percentage of the
Scheduled Principal Balance of the Mortgage Loans exceeds the percentage set out
below with respect to such Distribution Date:

Distribution Date (inclusive)
- -----------------------------

October 2001 - September 2002       6.00%
October 2002 - September 2003       6.00
October 2003 - September 2004       9.00
October 2004 - September 2005       9.00
October 2005 - September 2006      12.00
October 2006 and thereafter        12.00

     "Subsequent Cut-Off Date": The time and date specified in a Subsequent
Sales Agreement with respect to those Subsequent Mortgage Loans which are
transferred and assigned to the Trust pursuant to the related Subsequent Sales
Agreement.

    "Subsequent Mortgage Loans": The Mortgage Loans sold to the Trust pursuant
to Section 2.02 hereof, which shall be listed on the Schedule of Mortgage Loans
attached to the related Subsequent Sales Agreement.

     "Subsequent Sales Agreement": Each Subsequent Sales Agreement dated as of a
Subsequent Sales Date executed by the Master Servicer, the Seller and Saxon
Mortgage substantially in the form of Schedule III hereto, by which Subsequent
Mortgage Loans are sold and assigned to the Trust.

     "Subsequent Sales Date": The date specified in each Subsequent Sales
Agreement which shall be a date no later than the end of the Prepayment Period
preceding the first Distribution Date after the end of the Funding Period.

     "Tax Matters Person": Chase Bank of Texas, National Association, a national
banking association, and its successors and assigns in such capacity.

     "Telerate Page 3750" the display page currently so designated on the Dow
Jones Telerate Service (or such other page as may replace that page on that
service for the purpose of displaying comparable rates or prices).

    "Trigger Event": With respect to any Distribution Date after the Stepdown
Date, a Trigger Event exists if the product, expressed as a percentage of 2.75
times the quotient of (i) the aggregate Scheduled Principal Balances of all 60
or more days Delinquent Mortgage Loans and (ii) the Scheduled Principal Balances
as of the preceding Master Servicer Remittance Date equals or exceeds 45.00%.

     "Trust Estate": As defined in Section 2.01 hereof.

     "Trustee": Chase Bank of Texas, National Association, a national banking
association, its successor in interest or any successor trustee appointed in
accordance with the Trust Agreement.

     "Trustee Fee": The fee payable monthly to the Trustee by the Master
Servicer.

     "Underwriter": Morgan Stanley & Co. Incorporated.

     "Underwriting Agreement": The Underwriting Agreement dated November 17,
1999, between the Depositor and SMI and the Underwriter.

                                      11
<PAGE>

                                  Article II
               Formation of Trust; Conveyance of Mortgage Loans

     Section 2.01. Conveyance of Mortgage Loans. To provide for the distribution
of the principal of and interest on the Certificates in accordance with their
terms, the distribution of all other sums distributable under the Trust
Agreement with respect to the Certificates and the performance of the covenants
contained in the Trust Agreement, the Depositor hereby bargains, sells, conveys,
assigns and transfers to the Trustee, in trust, without recourse and for the
exclusive benefit of the Certificateholders as their interests may appear, all
the Depositor's right, title and interest in and to any and all benefits
accruing to the Depositor from: (i) the Mortgage Loans (except for any
prepayment penalties payable at any time with respect thereto), which the
Depositor is causing to be delivered to the Trustee (or the Custodian) herewith
(and all Qualified Substitute Mortgage Loans (except for any prepayment
penalties payable at any time with respect thereto) substituted therefor as
provided by Section 2.03 of the Standard Terms and pursuant to the terms of the
Sales Agreement), together in each case with the related Trustee Mortgage Loan
Files and the Depositor's interest in any Collateral that secured a Mortgage
Loan but that is acquired by foreclosure or deed-in-lieu of foreclosure after
the Closing Date, and all Monthly Payments due after the Cut-Off Date and all
curtailments or other principal prepayments received with respect to the
Mortgage Loans paid by the Borrower after the Cut-Off Date (except for any
prepayments received after the Cut-Off Date but reflected in the aggregate
Scheduled Principal Balance of the Mortgage Loans as of the Cut-Off Date) and
proceeds of the conversion, voluntary or involuntary, of the foregoing; (ii) the
Subsequent Mortgage Loans; (iii) the Servicing Agreement; (iv) the Sales
Agreement, except that the Depositor does not assign to the Trustee any of its
rights under Sections 9 and 12 of the Sales Agreement; (v) the Asset Proceeds
Account, the Pre-Funding Account, the Capitalized Interest Account and the
Distribution Account, whether in the form of cash, instruments, securities or
other properties; and (vi) all proceeds of any of the foregoing (including, but
not limited to, all proceeds of any mortgage insurance, hazard insurance, or
title insurance policy relating to the Mortgage Loans, cash proceeds, accounts,
accounts receivable, notes, drafts, acceptances, chattel paper, checks, deposit
accounts, rights to payment of any and every kind, and other forms of
obligations and receivables, which at any time constitute all or part or are
included in the proceeds of any of the foregoing) to pay the Certificates as
specified herein (items (i) through (vi) above, collectively, the "Trust
Estate").

     The Trustee acknowledges the sales, assignments and pledges created by the
foregoing paragraphs, accepts the trust hereunder in accordance with the
provisions hereof and agrees to perform the duties set forth herein or required
by the Standard Terms to the end that the interests of the Certificateholders
may be adequately and effectively protected in accordance with the terms and
conditions of this Agreement.

     By its execution of this Agreement, the Trustee acknowledges and declares
that it holds and will hold or has agreed to hold all documents delivered to it
from time to time with respect to the Mortgage Loans and all assets included in
the Trust Estate in trust for the exclusive use and benefit of all present and
future Certificateholders.

     Section 2.02.  Purchase of Subsequent Mortgage Loans.

     (a)  Subject to the satisfaction of the conditions set forth in paragraph
(b) below (based on the Master Servicer's review of such conditions) in
consideration of the delivery on a Subsequent Sales Date to or upon the order of
the Depositor of all or a portion of the Pre-Funded Amount, as the case may be,
the Depositor shall on such Subsequent Sales Date sell, transfer, assign, set
over and otherwise convey without recourse, to the Trust, and the Trustee shall
purchase on behalf of the Trust, all the Depositor's right, title and interest
in and to the Subsequent Mortgage Loans, together with the related Trustee
Mortgage Loan Files, covered by the Subsequent Sales Agreement delivered on such
date.

     (b)  The obligation of the Trust to acquire Subsequent Mortgage Loans is
subject to the satisfaction of each of the following conditions on or prior to
the related Subsequent Sales Date:

          (i)  the Depositor shall have delivered to the Trustee with a copy to
               the Master Servicer a duly executed written Subsequent Sales
               Agreement in substantially the form of Schedule III hereto, which
               shall include a Schedule of Subsequent Mortgage Loans, and
               specifying the amount to be withdrawn from the Pre-Funded
               Account;

         (ii)  the remaining term to maturity of each Subsequent Mortgage Loan
               may not exceed 30 years;

                                      12
<PAGE>

          (iii)  no Subsequent Mortgage Loan will have been selected in a manner
                 adverse to the interests of Certificateholders;

          (iv)   the Trustee shall have received a letter from each Rating
                 Agency confirming that the addition of the Subsequent Mortgage
                 Loans will not result in the reduction, qualification or
                 withdrawal of the then current ratings of the Certificates;

          (v)    no more than 2.00% of the Subsequent Mortgage Loan may be
                 Delinquent as of the related Cut-Off Date and none of these
                 Delinquent Mortgage Loans shall have missed their first
                 payment;

          (vi)   no Subsequent Mortgage Loan may have a Loan-to-Value Ratio
                 greater than 100.00%;

          (vii)  each Subsequent Mortgage Loan will be underwritten in
                 accordance with the Depositor's underwriting guidelines;

          (viii) after giving effect to the acquisition of the Subsequent
                 Mortgage Loans, the Mortgage Loans (which shall all be first
                 lien, ARM Loans):

                 (A)  will have a weighted average Mortgage Interest Rate of not
                      less than 9.75% and a weighted average margin of at least
                      6.10%;

                 (B)  the Mortgage Loans with a Loan to Value Ratio greater than
                      80% will not exceed 48.0% of the aggregate Scheduled
                      Principal Balances of the Mortgage Loans and the weighted
                      average Loan to Value Ratio of the Mortgage Loans will not
                      exceed 80.0%;

                 (C)  the weighted average remaining amortization term of the
                      Mortgage Loans shall not be less than 352 months;

                 (D)  may not exceed any of the following restrictions:

<TABLE>
<CAPTION>
                              Categories of                                          Restriction (Based on
                             Mortgage Loans                                      Scheduled Principal Balances)
                             --------------                                      ----------------------------
<S>                                                                              <C>
Mortgage Loans secured by investment properties                                             4.50%

Mortgage Loans Secured by manufactured homes
                                                                                            1.60%
</TABLE>


                 (E)  no more than 2.00% of the Mortgage Loans (by Scheduled
                      Principal Balance) shall have balances in excess of
                      $600,000;

                 (F)  no more than 27.00%, 15.00% and 5.00% of the Mortgage
                      Loans (by Scheduled Principal Balance) shall be classified
                      by Saxon Mortgage, Inc. as "B", "C" and "D", respectively;

                 (G)  not less than 75% of the Mortgage Loans (by Scheduled
                      Principal Balance ) shall be secured by single family
                      (attached and detached ) residences; and

                 (H)  not less than 94% of the Mortgage Loans shall be secured
                      by owner occupied dwellings.
                                    .
                 For purposes of making all calculations required by clause
                 (viii) the Scheduled Principal Balances of the Initial Mortgage
                 Loans at the Loans as of their respective Subsequent Cut-Off
                 Cut-Off Date and of the Subsequent Mortgage Dates shall be
                 used.

                                      13
<PAGE>

          (ix)   the Depositor shall have provided the Master Servicer
                 and the Trustee any information reasonably requested by
                 any of them with respect to the Subsequent Mortgage
                 Loans then to be sold to the Trust;

          (x)    the Depositor shall have delivered to the Master
                 Servicer for deposit in the Master Servicer Custodial
                 Account all principal and interest due in respect of
                 such Subsequent Mortgage Loans after the related
                 Subsequent Cut-Off Date;

          (xi)   the Depositor shall have delivered to the Trustee, the
                 Underwriter and the Rating Agencies a letter from an
                 independent accountant stating whether or not the
                 characteristics of the Subsequent Mortgage Loans conform
                 to the characteristics of the Mortgage Loans listed on
                 Schedule I;

          (xii)  as of each Subsequent Sales Date, neither the Depositor
                 nor Saxon Mortgage shall be insolvent, nor will either
                 of them be made insolvent by such transfer;

          (xiii) the Funding Period shall not have ended; and

          (xiv)  the Depositor and Saxon Mortgage, Inc. each shall have
                 delivered to the Master Servicer and the Trustee an
                 Officer's certificate confirming the satisfaction of
                 each condition precedent specified in this paragraph (b)
                 and in the related Subsequent Sales Agreement and
                 opinions of counsel with respect to corporate,
                 bankruptcy and tax matters relating to the transfer of
                 Subsequent Mortgage Loans in the forms substantially
                 similar to those delivered on the Closing Date.

     (c)  Pursuant to Section 2.03(b) hereof, the Trustee shall remit on
each Subsequent Sales Date to or upon the order of the Depositor from the Pre-
Funding Account the amount specified by the Master Servicer only upon the
Trustee's receipt of: (i) a fully executed Subsequent Sales Agreement; (ii) the
two Officer's certificates required by Section 2.02(b)(xiv) hereof; (iii) an
Opinion or Opinions of Counsel from each of the Depositor and Saxon Mortgage,
Inc. required by Section 2.02(b)(xiv); (iv) a letter from each Rating Agency as
required by Section 2.02 (b)(iv); (v) a letter from an independent accountant as
required by Section 2.02(b)(xi); and (vi) the written instruction from the
Master Servicer setting forth the amounts to be paid as required by Section
2.03(b) hereof. The Trustee may rely and shall be protected in relying on all
such Officer's certificates as evidencing full compliance with all conditions
precedent specified in Section 2.02(b), without any further duty of inquiry with
respect thereto.


     (d)  On each Subsequent Sales Date and on the Master Servicer Reporting
Date immediately following the end of the Funding Period, the Master Servicer
shall determine: (i) the amount and correct disposition of the Pre-Funded Amount
and the amount remaining in the Capitalized Interest Account and (ii) any other
necessary matters in connection with the administration of the Pre-Funding
Account and the Capitalized Interest Account. With respect to each Subsequent
Sales Date, the Master Servicer shall determine the Overfunded Interest Amount.
If any amounts are released as a result of an error in calculation to the
Holders or the Depositor from the Pre-Funding Account or from the Capitalized
Interest Account, the Depositor shall immediately repay such amounts to the
Master Servicer.

     Section 2.03.  Pre-Funding Account and Capitalized Interest Account.

     (a)  The Trustee shall establish and maintain the Pre-Funding Account and
the Capitalized Interest Account, each to be held in trust for the benefit of
the Certificateholders. Each of the Pre-Funding Account and the Capitalized
Interest Account shall be an Eligible Account. On the Closing Date, the
Depositor will cause to be deposited in the Pre-Funding Account the Original
Pre-Funded Amount and in the Capitalized Interest Account the Initial
Capitalized Interest Amount.

     (b)  On any Subsequent Sales Date, the Master Servicer shall instruct the
Trustee, with a copy to the Depositor, (i) to withdraw from the Pre-Funded
Amount in the Pre-Funding Account an amount equal to 100% of the aggregate
Scheduled Principal Balances of the Subsequent Mortgage Loans as of the
applicable Subsequent Cut-Off Date sold to the Trust on such Subsequent Sales
Date and (ii) to pay such amounts to or upon the order of the Depositor upon
satisfaction of the conditions set forth in Section 2.02(c) hereof with respect
thereto. In no event shall the Trustee withdraw from the Pre-Funding Account an
amount in excess of the Original Pre-Funded Amount.

                                      14
<PAGE>

     (c)  On each Master Servicer Remittance Date to and including the
Master Servicer Remittance Date immediately following the end of the Funding
Period, the Master Servicer shall instruct the Paying Agent to transfer: (i) to
the Capitalized Interest Account from the Pre-Funding Account, the Pre-Funding
Account Earnings; and (ii) to the Asset Proceeds Account from the Capitalized
Interest Account, the Capitalized Interest Requirement.

     (d)  On each Subsequent Sales Date the Master Servicer shall instruct the
Trustee to distribute the Overfunded Interest Amount, if any, to the Depositor.
At the end of the Funding Period, all amounts, if any, remaining in the
Capitalized Interest Account shall be transferred to the Depositor and the
Capitalized Interest Account shall be closed.

     (e)  On the Master Servicer Remittance Date immediately following the end
of the Funding Period, the Master Servicer shall instruct the Trustee to
transfer the Pre-Funded Amount to the Asset Proceeds Account for distribution to
the Holders of the Certificates in accordance with Section 3.01(b) hereof.

     (f)  The Pre-Funding Account and the Capitalized Interest Account shall not
be assets of the REMIC created pursuant to this Agreement.

                                  Article III
                        REMITTING TO CERTIFICATEHOLDERS


     Section 3.01.  Certificate Distributions.

     (a)  On each Distribution Date, the Trustee shall make the following
allocations from the Asset Proceeds Account of an amount equal to the Interest
Funds in the following order of priority, and each such allocation shall be made
only after all preceding allocations shall have been made until such amount
shall have been fully allocated for such Distribution Date:

          (i)   to the Class AV-1 Certificates, the Class AV-1 Current Interest
                and any Interest Carry Forward Amount for the Class AV-1
                Certificates;

          (ii)  to the Class MV-1 Certificates, the Class MV-1 Current Interest;

          (iii) to the Class MV-2 Certificates, the Class MV-2 Current Interest;

          (iv)  to the Class BV-1 Certificates, the Class BV-1 Current Interest;
                and any remainder pursuant to Section 3.01(c) hereof.

          (v)   any remainder pursuant to Section 3.01(c) hereof.

     (b)  On each Distribution Date, the Trustee shall make the following
allocations from the Asset Proceeds Account of an amount equal to the Principal
Distribution Amount in the following order of priority, and each such allocation
shall be made only after all preceding allocations shall have been made until
such amount shall have been fully allocated for such Distribution Date:

          (i)   to the Class AV-1 Certificates, the Class AV-1 Principal
                Distribution Amount;

          (ii)  to the Class MV-1 Certificates, the Class MV-1 Principal
                Distribution Amount;

          (iii) to the Class MV-2 Certificates, the Class MV-2 Principal
                Distribution Amount;

          (iv)  if a Subordinated Trigger Event exists on such Distribution
                Date, sequentially, to the Class MV-1 and Class MV-2
                Certificates, in that order, the Class BV-1 Principal
                Distribution Amount;

          (v)   to the Class BV-1 Certificates, the Class BV-1 Principal
                Distribution Amount (provided that a Subordinated Trigger Event
                does not exist on such Distribution Date); and

          (vi)  to the Class R Certificates;

provided, however, that, before the Stepdown Date or if a Trigger Event is in
effect on any Distribution Date: (a) the Class AV-1 Principal Distribution
Amount shall equal the Principal Distribution Amount; (b) after the Certificate

                                      15
<PAGE>

Principal Balance of the Class AV-1 Certificates has been reduced to zero, the
Class MV-1 Principal Distribution Amount shall equal the Principal Distribution
Amount for such Distribution Date; (c) after the Certificate Principal Balance
of the Class MV-1 Certificates has been reduced to zero, the Class MV-2
Principal Distribution Amount shall equal the Principal Distribution Amount for
such Distribution Date; and (d) after the Certificate Principal Balance of the
Class MV-2 Certificates has been reduced to zero, the Class BV-1 Principal
Distribution Amount shall equal the Principal Distribution Amount for such
Distribution Date.

     (c)  On each Distribution Date, the Trustee shall make the following
allocations from the Asset Proceeds Account of the remainder pursuant to Section
3.01(a)(v) hereof, and each such allocation shall be made only after all
preceding allocations shall have been made until such remainder has been fully
allocated :

          (i)    the Extra Principal Distribution Amount;

          (ii)   to the Class MV-1 Certificates, the Class MV-1 Interest Carry
                 Forward Amount;

          (iii)  to the Class MV-1 Certificates, the Class MV-1 Unpaid Realized
                 Loss Amount;

          (iv)   to the Class MV-2 Certificates, the Class MV-2 Interest Carry
                 Forward Amount;

          (v)    to the Class MV-2 Certificates, the Class MV-2 Unpaid Realized
                 Loss Amount;

          (vi)   to the Class BV-1 Certificates, the Class BV-1 Interest Carry
                 Forward Amount;

          (vii)  to the Class BV-1 Certificates, the Class BV-1 Unpaid Realized
                 Loss Amount;

          (viii) on any Distribution Date on or before the last Distribution
                 Date with respect to the Class AV-1 Certificates, to the Class
                 AV-1 Certificates, the Class AV-1 Certificates Carryover;

          (ix)   on any Distribution Date on or before the last Distribution
                 Date with respect to the Class MV-1 Certificates, to the Class
                 MV-1 Certificates, the Class MV-1 Certificates Carryover;

          (x)    on any Distribution Date on or before the last Distribution
                 Date with respect to the Class MV-2 Certificates, to the Class
                 MV-2 Certificates, the Class MV-2 Certificates Carryover;

          (xi)   on any Distribution Date on or before the last Distribution
                 Date with respect to the Class BV-1 Certificates, to the Class
                 BV-1 Certificates, the Class BV-1 Certificates Carryover;

          (xii)  the remainder pursuant to Section 3.01(d) hereof.

     (d)  On each Distribution Date, the Trustee shall allocate the amount
remaining in the Asset Proceeds Account pursuant to Section 3.01(c)(xi) hereof
to the Class R Certificates.

     (e)  On each Distribution Date, the Trustee shall allocate any excess of
the Certificate Principal Balance over the Scheduled Principal Balances to
reduce the Certificate Principal Balances of the Subordinated Certificates in
the following order of priority:

          (i)    to the Class BV-1 Certificates until the Class BV-1 Certificate
                 Principal Balance is reduced to zero;

          (ii)   to the Class MV-2 Certificates until the Class MV-2 Certificate
                 Principal Balance is reduced to zero; and

          (iii)  to the Class MV-1 Certificates until the Class MV-1 Certificate
                 Principal Balance is reduced to zero.

     Section 3.02.  Reports to the Depositor and the Trustee:

     On or before the Business Day preceding each Distribution Date, based on
information provided by the Servicer, the Master Servicer shall notify the
Depositor and the Trustee of the following information with respect to the next
Distribution Date (which notification may be given by facsimile, or by telephone
promptly confirmed in writing):

     (a)  the aggregate amount then on deposit in the Asset Proceeds Account and
the source thereof (identified as interest, scheduled principal or unscheduled
principal);

                                      16
<PAGE>

     (b)  the amount of any Realized Losses, Applied Realized Loss Amounts and
Unpaid Realized Loss Amounts;

     (c)  the application of the amounts described in clauses (a) and (b) on
such Distribution Date in accordance with Section 3.01 hereof;

     (d)  whether a Trigger Event or a Subordinated Trigger Event has occurred;
and

     (e)  for each Distribution Date during the Funding Period, (i) the Pre-
Funded Amount previously used to acquire Subsequent Mortgage Loans; (ii) the
Pre-Funding Account Earnings transferred to the Asset Proceeds Account; (iii)
the Capitalized Interest Requirement transferred to the Asset Proceeds Account;
and (iv) the Pre-Funded Amount; and for the Distribution Date following the end
of the Funding Period, the Pre-Funded Amount distributed as a part of a
Principal Distribution Amount.

     Section 3.03.  Reports by Master Servicer.

     (a)  On or before the Business Day preceding each Distribution Date, based
on information provided by the Servicer, the Master Servicer shall report or
cause to be reported in writing to the Depositor (in hard copy), each Holder of
a Certificate, the Underwriter and the Trustee and their designees (designated
in writing to the Master Servicer) and the Rating Agencies:

          (i)    with respect to each Class of Certificates (other than Class R)
     (based on a Certificate in the original principal amount of $1,000):

                 (a)  the amount of the distributions on such Distribution Date;

                 (b)  the amount of such distribution allocable to interest;

                 (c)  the amount of such distributions allocable to principal,
          separately identifying the aggregate amount of any prepayments,
          Substitution Shortfalls, repurchase amounts pursuant to Section 2.03
          of the Standard Terms or other recoveries of principal included
          therein, any Extra Principal Distribution Amount and any Class MV-1,
          Class MV-2, and Class BV-1 Applied Realized Loss Amount with respect
          to, and any Class MV-1, Class MV-2, and Class BV-1 Unpaid Realized
          Loss Amount at, such Distribution Date;

                 (d)  the principal balance after giving effect to any
          distribution allocable to principal; and

                 (e)  any Class AV-1, Class MV-1, Class MV-2, and Class BV-1
          Interest Carry Forward Amount or any Class AV-1, Class MV-1,
          Class MV-2, and Class BV-1 Certificates Carryover ;

          (ii)   the Net Rate;

          (iii)  the Realized Losses for the period and since the Cut-Off Date;

          (iv)   the largest Mortgage Loan balance outstanding;

          (v)    the Servicing Fees and Master Servicing Fees;

          (vi)   One-Month LIBOR on the most recent Interest Determination Date;

          (vii)  the Pass-Through Rates for the Certificates for the current
     Accrual Period and, if the Pass-Through Rates for any Class of the
     Certificates for the current Accrual Period is based on the Net Rate, the
     Pass-Through Rates for the Certificates with respect to which the Net Rate
     applies; and

          (viii) for each Distribution Date during the Funding Period, the
     Pre-Funded Amount.

     (b)  On each Distribution Date, based on information provided by the
Servicer, the Master Servicer will distribute to the Depositor, each Holder, the
Underwriter, the Rating Agencies and the Trustee, together with the information
described in subsection (a) preceding, the following information in hard copy:

                                    17
<PAGE>

          (i)   the number and aggregate principal balances of Mortgage Loans
     (a) 30-59 days Delinquent, (b) 60-89 days Delinquent and (c) 90 or more
     days Delinquent, as of the close of business as of the end of the related
     prepayment period;

          (ii)  the percentage that each of the Scheduled Principal Balances set
     forth pursuant to clauses (a), (b) and (c) of paragraph (i) above represent
     with respect to all Mortgage Loans;

          (iii) the number and Scheduled Principal Balance of all Mortgage Loans
     in foreclosure proceedings as of the close of business as of the end of the
     related Prepayment Period and in the immediately preceding Prepayment
     Period;

          (iv)  the number of Mortgagors and the Scheduled Principal Balances of
     Mortgage Loans involved in bankruptcy proceedings as of the close of
     business as of the end of the related Prepayment Period;

          (v)   the aggregate number and aggregate book value of any REO
     Property as of the close of business as of the end of the related
     Prepayment Period; and

          (vi)  the number and amount by principal balance of 60+ Day Delinquent
     Loans, by Servicer and as of the end of the related Prepayment Period.

          (c)  All allocations made by the Trustee shall be based on information
     the Trustee receives from the Master Servicer which the Trustee shall be
     protected in relying on.

                                   Article IV
                                The Certificates

     Section 4.01.  The Certificates.

     The Certificates shall be designated generally as the Mortgage Loan Asset
Backed Certificates, Series 1999-4. The aggregate principal amount of
Certificates that may be executed and delivered under this Agreement is limited
to $370,000,000, except for Certificates executed and delivered upon
registration of transfer of, or in exchange for, or in lieu of, other
Certificates pursuant to Sections 5.04 or 5.06 of the Standard Terms. The
following table sets forth the Classes of Certificates and the initial
Certificate Principal Balance for each such Class:

<TABLE>
<CAPTION>
                                             Initial Certificate
              Class                            Principal Balance

               <S>                           <C>
               AV-1                                 $303,437,000
               MV-1                                 $ 27,568,000
               MV-2                                 $ 20,340,000
               BV-1                                 $ 18,655,000
                R                                         (1)
</TABLE>

___________________

/(1)/ The Class R Certificates have no stated principal balance or Pass-Through
 Rate and are not entitled to any scheduled distributions of principal or
 interest.

     Section 4.02.  Denominations.

     The Book-Entry Certificates shall be registered as one or more certificates
in the name of the Clearing Agency or its nominee. Beneficial interests in the
Book-Entry Certificates shall be held by the Beneficial Owners thereof through
the book-entry facilities of the Clearing Agency as described herein, in minimum
denominations of $1,000 and integral multiples of $1,000 in excess thereof. The
Class R Certificates shall be issued in certificated, fully-registered form in
minimum Percentage Interests of 25% and integral multiples of 1% in excess
thereof, except that two Class R Certificates may be issued in different
denominations.

                                      18
<PAGE>

                                   Article V
                           Miscellaneous Provisions

     Section 5.01.  Request for Opinions.

     (a)  The Depositor and the Master Servicer hereby request and authorize
McGuire, Woods, Battle & Boothe LLP, as their counsel in this transaction, to
issue on behalf of the Depositor and the Master Servicer such legal opinions to
the Trustee and each Rating Agency as may be (i) required by any and all
documents, certificates or agreements executed in connection with the Trust or
(ii) requested by the Trustee, any Rating Agency or their respective counsels.

     (b)  The Trustee hereby requests and authorizes its counsel to issue on
behalf of the Trustee such legal opinions to the Depositor, the Master Servicer,
and each Rating Agency as may be required by any and all documents, certificates
or agreements executed in connection with the establishment of the Trust and the
issuance of the Certificates.

     Section 5.02.  Form of Certificates; Schedules and Exhibits; Governing Law.

     (a)  The Certificates shall be substantially in the respective forms set
forth in the Exhibits hereto. All Certificates shall be dated the date of their
execution.

     (b)  Each of the Schedules and Exhibits attached hereto or referenced
herein is incorporated herein by reference as contemplated by the Standard
Terms.

     (c)  In accordance with Section 11.04 of the Standard Terms, this Agreement
shall be construed in accordance with and governed by the laws of the State,
without regard to any conflicts of laws principles thereof.

     (d)  Notwithstanding Section 5.05(a) of the Standard Terms, Class R
Certificates shall only be transferable to an affiliate of the Depositor or a
Qualified Institutional Buyer.

     Section 5.03.  REMIC Administration.

     (a)  REMIC. (i) The beneficial ownership of the REMIC shall be evidenced
as set in Section 4.01 hereof; Class AV-1, Class MV-1, Class MV-2, and Class
BV-1 Certificates are Regular Interests in the REMIC. The Class R Certificates
are the residual interest in the REMIC.

          (ii)   The assets of the REMIC are the Mortgage Loans and the Asset
     Proceeds Account.

          (iii)  On each Distribution Date, amounts in the Asset Proceeds
     Account will be distributed as provided in Section 3.01 hereof.

     (b)  General.

          (i)    The Closing Date is designated as the "start up" day of the
                 REMIC.

          (ii)   The Trustee shall make an election to treat the REMIC as a
                 REMIC under the Code.

     (c)  The "latest possible maturity date" for purposes of the REMIC
regulations and the REMIC established hereby is December 25, 2031.

     Section 5.04.  Optional Termination.

     (a)  On any Master Servicer Remittance Date on or after the Initial
Optional Termination Date, the Master Servicer may determine to purchase and may
cause the purchase from the Trust of all (but not fewer than all) Mortgage Loans
and all property theretofore acquired in respect of any Mortgage Loan by
foreclosure, deed in lieu of foreclosure, or otherwise then remaining in the
Trust Estate at a price equal to 100% of the aggregate Scheduled Principal
Balances of the Mortgage Loans (including any REO Property) as of the day of
purchase minus amounts remitted from the Master Servicer Custodial Account to
the Asset Proceeds Account representing collections of principal on the Mortgage
Loans during the current Remittance Period, plus one month's interest on such
amount, plus in all cases all accrued and unpaid Servicing Fees and Master
Servicing Fees plus the aggregate amount of any unreimbursed Advances and any
Advances which the Servicer or the Master Servicer has theretofore failed to
remit; but in any event such purchase amount shall be sufficient to retire all
Certificates in full. In connection with such purchase, the Master Servicer
shall remit to the Trustee all amounts then on deposit in the Master Servicer
Custodial Account for deposit to the Asset Proceeds Account, which deposit shall
be deemed to have occurred immediately preceding such purchase.

                                      19
<PAGE>

     (b)  The Master Servicer shall direct the Trustee to adopt and the Trustee
shall adopt, as to the REMIC established hereunder, a plan of complete
liquidation as contemplated by Section 860F(a)(4) of the Code and as prepared by
the Master Servicer, and shall provide to the Trustee an Opinion of Counsel
experienced in federal income tax matters acceptable to the Trustee to the
effect that such purchase and liquidation constitutes, as to such REMIC, a
Qualified Liquidation. In addition, the Master Servicer shall provide to the
Trustee an Opinion of Counsel acceptable to the Trustee to the effect that such
purchase and liquidation does not constitute a preference payment pursuant to
the United States Bankruptcy Code.

     (c)  Promptly following any purchase described in this Section 5.04, the
Trustee will release the Trustee Mortgage Loan File to the Master Servicer or
otherwise upon its order.

     Section 5.05.  Master Servicer; Certificate Registrar and Paying Agent

     (a)  Saxon Mortgage, Inc. is hereby appointed as Master Servicer hereunder.

     (b)  Chase Bank of Texas, National Association is hereby appointed as
Certificate Registrar and Paying Agent.

                                      20
<PAGE>

     IN WITNESS WHEREOF, the Depositor, the Master Servicer and the Trustee have
caused this Agreement to be duly executed by their respective officers thereunto
duly authorized and their respective signatures duly attested all as of
November 1, 1999.

                                       SAXON ASSET SECURITIES COMPANY



                                       By:  /s/ Bradley D. Adams
                                            -------------------------------
                                           Bradley D. Adams, Vice President



                                       SAXON MORTGAGE, INC.

                                           as Master Servicer



                                       By:  /s/ Michael L. Sawyer
                                            -------------------------------
                                           Michael L. Sawyer, President



                                       CHASE BANK OF TEXAS, NATIONAL ASSOCIATION

                                           as Trustee



                                       By:  /s/ Lila R. Garlin
                                            -------------------------------
                                           Lila R. Garlin, Vice President
<PAGE>

COMMONWEALTH OF VIRGINIA    )

                            ) ss.:

COUNTY OF HENRICO           )


     The foregoing instrument was acknowledged before me November 17, 1999, by
Bradley D. Adams, a Vice President of Saxon Asset Securities Company, a Virginia
corporation, on behalf of the corporation.

                          /s/ Joyce T. Collins
                        --------------------------------------------
                        Notary Public


My Commission expires:    9/30/2002
                        --------------
<PAGE>

COMMONWEALTH OF VIRGINIA    )

                            ) ss.:

COUNTY OF HENRICO           )


       The foregoing instrument was acknowledged before me on November 17, 1999,
by Michael L. Sawyer, President of Saxon Mortgage, Inc., a Virginia corporation,
on behalf of the corporation.

                             /s/ Joyce T. Collins
                            ----------------------------
                            Notary Public


My Commission expires:    9/30/2002
                        --------------
<PAGE>

CITY OF RICHMOND            )

                            ) ss.:

COMMONWEALTH OF VIRGINIA    )


       The foregoing instrument was acknowledged before me November 22, 1999, by
Lila R. Garlin, a Vice President of Chase Bank of Texas, National Association, a
national banking association, on behalf of the bank.


                              /s/ Patsy K. Childress
                            -----------------------------
                            Notary Public


My Commission expires:   2/28/2003
                       ----------------
<PAGE>

                                   Schedule I

                                 Mortgage Loans
                                 --------------
<PAGE>

                                  Schedule II

                                Sales Agreement
                                ---------------
<PAGE>

                                  Schedule III

                       Form of Subsequent Sales Agreement
                       ----------------------------------


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