Payment Date: 05/25/99


          ------------------------------------------------------------
                          BA MORTGAGE SECURITIES, INC.
               Mortgage Pass-Through Certificates, Series 1999-1
                     BANK OF AMERICA, FSB, MASTER SERVICER
          ------------------------------------------------------------



Class Information                                Current Payment Information

- ----------------------------------------------------------------------------------------------------------------------------------
                                 Beginning       Pass Thru     Principal       Interest      Total           Principal  Interest
Type       Class Code   Name     Cert. Bal.      Rate          Dist. Amt.      Dist. Amt.    Dist.           Losses     Shortfalls
- ----------------------------------------------------------------------------------------------------------------------------------
                                                                                             
Senior                  A-1       163,310,057.33    6.500000%       829,599.84    884,596.14    1,714,195.99       0.00       0.00
                        A-2        65,223,676.99    6.000000%       331,289.17    326,118.38      657,407.55       0.00       0.00
                        A-3        98,417,368.67    6.500000%       424,361.68    533,094.08      957,455.76       0.00       0.00
                        A-4         1,485,699.14    6.250000%       115,647.63      7,738.02      123,385.64       0.00       0.00
                        A-5        25,000,000.00    6.250000%             0.00    130,208.33      130,208.33       0.00       0.00
                        A-6        19,208,030.25    5.402500%        82,822.29     86,476.15      169,298.44       0.00       0.00
                        A-7        19,208,030.25    3.097500%             0.00     49,580.73       49,580.73       0.00       0.00
                        A-8         7,068,000.00    6.500000%             0.00     38,285.00       38,285.00       0.00       0.00
                        A-9         3,556,666.00    6.400000%             0.00     18,968.89       18,968.89       0.00       0.00
                        A-10       17,755,000.00    6.500000%             0.00     96,172.92       96,172.92       0.00       0.00
                        A-11        4,843,000.00    6.500000%             0.00     26,232.92       26,232.92       0.00       0.00
                        A-12        2,183,000.00    6.500000%             0.00     11,824.58       11,824.58       0.00       0.00
                        A-13        1,136,000.00    6.500000%             0.00      6,153.33        6,153.33       0.00       0.00
                        A-14        1,578,000.00    6.500000%             0.00      8,547.50        8,547.50       0.00       0.00
                        A-15        1,868,444.00    6.500000%             0.00     10,120.74       10,120.74       0.00       0.00
                        A-16        2,000,000.00    6.500000%             0.00     10,833.33       10,833.33       0.00       0.00
                        A-17        1,000,000.00    0.000000%             0.00      6,250.00        6,250.00       0.00       0.00
                        A-18        1,625,000.00    5.902500%             0.00      7,992.97        7,992.97       0.00       0.00
                        A-19          375,000.00    9.089167%             0.00      2,840.36        2,840.36       0.00       0.00
                        A-20       49,233,040.46    6.400000%       205,650.07    262,576.22      468,226.28       0.00       0.00
                        A-21       25,400,966.96    7.000000%        98,951.33    148,172.31      247,123.64       0.00       0.00
                        A-22       11,608,445.00    6.000000%             0.00     58,042.22       58,042.22       0.00       0.00
                        A-23        3,200,334.00    6.250000%             0.00     16,668.41       16,668.41       0.00       0.00
                        A-24       60,000,000.00    6.500000%             0.00    325,000.00      325,000.00       0.00       0.00
                        A-PO        1,214,430.87    0.000000%         1,252.71          0.00        1,252.71       0.00       0.00
Residual                A-R                 0.00    6.500000%             0.00          0.00            0.00       0.00       0.00
                        A-LR                0.00    6.500000%             0.00          0.00            0.00       0.00       0.00
- ----------------------------------------------------------------------------------------------------------------------------------
Subordinate             B-1        12,880,161.13    6.500000%        11,012.96     69,767.54       80,780.50       0.00       0.00
                        B-2         4,493,079.93    6.500000%         3,841.73     24,337.52       28,179.25       0.00       0.00
                        B-3         2,096,771.30    6.500000%         1,792.81     11,357.51       13,150.32       0.00       0.00
                        B-4         2,096,771.30    6.500000%         1,792.81     11,357.51       13,150.32       0.00       0.00
                        B-5         1,198,155.31    6.500000%         1,024.46      6,490.01        7,514.47       0.00       0.00
                        B-6         1,198,262.75    6.500000%         1,024.55      6,490.59        7,515.14       0.00       0.00
- ----------------------------------------------------------------------------------------------------------------------------------
- ----------------------------------------------------------------------------------------------------------------------------------
Totals          -        -        592,253,361.40     -            2,110,064.03  3,202,294.21    5,312,358.24     -          -
- ----------------------------------------------------------------------------------------------------------------------------------
Class Information

- --------------------------------------------------------------------------------
                                             Ending Cert.          Unpaid
Type             Class Code     Name         Notional Bal.         Interest
- --------------------------------------------------------------------------------
Senior                          A-1       162,480,457.48              0.00
                                A-2        64,892,387.83              0.00
                                A-3        97,993,007.00              0.00
                                A-4         1,370,051.51              0.00
                                A-5        25,000,000.00              0.00
                                A-6        19,125,207.96              0.00
                                A-7        19,125,207.96              0.00
                                A-8         7,068,000.00              0.00
                                A-9         3,556,666.00              0.00
                                A-10       17,755,000.00              0.00
                                A-11        4,843,000.00              0.00
                                A-12        2,183,000.00              0.00
                                A-13        1,136,000.00              0.00
                                A-14        1,578,000.00              0.00
                                A-15        1,868,444.00              0.00
                                A-16        2,000,000.00              0.00
                                A-17        1,000,000.00              0.00
                                A-18        1,625,000.00              0.00
                                A-19          375,000.00              0.00
                                A-20       49,027,390.39              0.00
                                A-21       25,302,015.63              0.00
                                A-22       11,608,445.00              0.00
                                A-23        3,200,334.00              0.00
                                A-24       60,000,000.00              0.00
                                A-PO        1,213,178.16              0.00
Residual                        A-R                 0.00              0.00
                                A-LR                0.00              0.00
- --------------------------------------------------------------------------------
Subordinate                     B-1        12,869,148.17              0.00
                                B-2         4,489,238.20              0.00
                                B-3         2,094,978.49              0.00
                                B-4         2,094,978.49              0.00
                                B-5         1,197,130.85              0.00
                                B-6         1,197,238.20              0.00
- --------------------------------------------------------------------------------
- --------------------------------------------------------------------------------
Totals            -              -        590,143,297.37     -
- --------------------------------------------------------------------------------



                             Payment Date: 05/25/99


          ------------------------------------------------------------
                          BA MORTGAGE SECURITIES, INC.
               Mortgage Pass-Through Certificates, Series 1999-1
                     BANK OF AMERICA, FSB, MASTER SERVICER
          ------------------------------------------------------------



Class Information                                Current Payment Information

                                                      Factors per $1,000

- ------------------------------------------------------------------------------------------------------------------------
                                   Beginning     Pass Thru    CUSIP       Principal     Interest    Ending Cert./
Type        Class Code    Name   Cert. Bal.(Face)  Rate       Numbers       Dist.         Dist.     Notional Bal.
- ------------------------------------------------------------------------------------------------------------------------
                                                                            
- ------------------------------------------------------------------------------------------------------------------------
Senior                     A-1   163,310,057.33     6.500000% 060506AA0     4.985456      5.315955    976.421585
                           A-2    65,223,676.99     6.000000% 060506AB8     4.984850      4.907047    976.424450
                           A-3    98,417,368.67     6.500000% 060506AC6     4.243617      5.330941    979.930070
                           A-4     1,485,699.14     6.250000% 060506AD4    60.327400      4.036524    714.685193
                           A-5    25,000,000.00     6.250000% 060506AE4     0.000000      5.208333  1,000.000000
                           A-6    19,208,030.25     5.402500% 060506AF9     4.243617      4.430832    979.930070
                           A-7    19,208,030.25     3.097500% 060506AG7     0.000000      2.540398    979.930070
                           A-8     7,068,000.00     6.500000% 060506AH5     0.000000      5.416667  1,000.000000
                           A-9     3,556,666.00     6.400000% 060506AJ1     0.000000      5.333333  1,000.000000
                           A-10   17,755,000.00     6.500000% 060506AK8     0.000000      5.416667  1,000.000000
                           A-11    4,843,000.00     6.500000% 060506AL6     0.000000      5.416667  1,000.000000
                           A-12    2,183,000.00     6.500000% 060506AM4     0.000000      5.416667  1,000.000000
                           A-13    1,136,000.00     6.500000% 060506AN2     0.000000      5.416667  1,000.000000
                           A-14    1,578,000.00     6.500000% 060506AP7     0.000000      5.416667  1,000.000000
                           A-15    1,868,444.00     6.500000% 060506AQ5     0.000000      5.416667  1,000.000000
                           A-16    2,000,000.00     6.500000% 060506AR3     0.000000      5.416667  1,000.000000
                           A-17    1,000,000.00     0.000000% 060506AS1     0.000000      6.250000  1,000.000000
                           A-18    1,625,000.00     5.902500% 060506AT9     0.000000      4.918750  1,000.000000
                           A-19      375,000.00     9.089167% 060506AU6     0.000000      7.574306  1,000.000000
                           A-20   49,233,040.46     6.400000% 060506AV4     4.113001      5.251524    980.547808
                           A-21   25,400,966.96     7.000000% 060506AW2     3.839788      5.749798    981.839954
                           A-22   11,608,445.00     6.000000% 060506AX0     0.000000      5.000000  1,000.000000
                           A-23    3,200,334.00     6.250000% 060506AY8     0.000000      5.208333  1,000.000000
                           A-24   60,000,000.00     6.500000% 060506AZ5     0.000000      5.416667  1,000.000000
                           A-PO    1,214,430.87     0.000000% 060506BA9     1.029439      0.000000    996.956795
Residual                   A-R             0.00     6.500000% 060506BB7     0.000000      0.000000      0.000000
                           A-LR            0.00     6.500000% 060506BC5     0.000000      0.000000      0.000000
- ------------------------------------------------------------------------------------------------------------------------
Subordinate                B-1    12,880,161.13     6.500000% 060506BD3     0.853597      5.407574    997.467735
                           B-2     4,493,079.93     6.500000% 060506BE1     0.853597      5.407574    997.467735
                           B-3     2,096,771.30     6.500000% 060506BF8     0.853597      5.407574    997.467735
                           B-4     2,096,771.30     6.500000% 060506BG6     0.853597      5.407574    997.467735
                           B-5     1,198,155.31     6.500000% 060506BH4     0.853597      5.407574    997.467735
                           B-6     1,198,262.75     6.500000% 060506BJ0     0.853597      5.407574    997.467735
- ------------------------------------------------------------------------------------------------------------------------
- ------------------------------------------------------------------------------------------------------------------------
Totals       -             -     592,253,361.40       -            -           -             -           -
- ------------------------------------------------------------------------------------------------------------------------
- ------------------------------------------------------------------------------------------------------------------------





          ------------------------------------------------------------
                          BA MORTGAGE SECURITIES, INC.
               Mortgage Pass-Through Certificates, Series 1999-1
                     BANK OF AMERICA, FSB, MASTER SERVICER
          ------------------------------------------------------------

- --------------------------------------------------------------------------------
                             COLLATERAL INFORMATION
- --------------------------------------------------------------------------------
                                                             Total
                                                             -----
Aggregated stated principal balance  590,143,297.13   590,143,297.13
Aggregated loan count                          1762             1762
Aggregated average loan rate              7.078104%             7.08
Aggregated prepayment amount           1,603,549.83     1,603,549.83

- --------------------------------------------------------------------------------
                                FEES AND ADVANCES
- --------------------------------------------------------------------------------
                                                             Total
                                                             -----
Monthly master servicing fees            287,212.54       287,212.54
Monthly sub servicer fees                      0.00             0.00
Monthly trustee fees                       1,727.41         1,727.41


Aggregate advances                              N/A              N/A
Advances this periods                          0.00             0.00

- --------------------------------------------------------------------------------
                          LOSSES & INSURANCE COVERAGES
- --------------------------------------------------------------------------------

                                                             Total
                                                             -----
Net realized losses (this period)              0.00             0.00
Cumulative losses (from Cut-Off)               0.00             0.00

Coverage Amounts                                             Total
- ----------------                                             -----
Bankruptcy                                     0.00             0.00
Fraud                                  6,000,846.00     6,000,846.00
Special Hazard                         5,922,533.61     5,922,533.61


                         Aggregate Certificate Information
   -----------------------------------------------------------------------------
   Class            Aggregate           Aggregate                     Aggregate
   Type            Percentage           Prepay Pct.              End Cert. Bal.
   -----------------------------------------------------------------------------
   Senior           95.957213%           100.000000%            568,290,159.67
   -----------------------------------------------------------------------------
   Junior            4.042787%             0.000000%             23,942,712.40
   -----------------------------------------------------------------------------

- --------------------------------------------------------------------------------
                          DELINQUENCY INFORMATION
- --------------------------------------------------------------------------------
Period                             Loan Count    Ending Stated Balance
- ------                             ----------    ---------------------
30 to 59 days                           0                         0.00
60 to 89 days                           0                         0.00
90 or more                              0                         0.00
Foreclosure                             0                         0.00

Totals:                                 0                         0.00
- --------------------------------------------------------------------------------



- --------------------------------------------------------------------------------
                                REO INFORMATION
- --------------------------------------------------------------------------------
   REO Date        Loan Number     Ending Stated Balance          Book Value
   --------        -----------     ---------------------          ----------
   N/A              #                   0                            N/A
   N/A              #                   0                            N/A
   N/A              #                   0                            N/A
   N/A              #                   0                            N/A
   N/A              #                   0                            N/A
   N/A              #                   0                            N/A
   N/A              #                   0                            N/A
   N/A              #                   0                            N/A
   Totals:                              0                            N/A

Current Total Outstanding Balance:                                      0.00
Current Total Outstanding Number of Loans:                                 0




- --------------------------------------------------------------------------------
                               OTHER INFORMATION
- --------------------------------------------------------------------------------
                                  Amount/Withdrawal     Total/Ending Bal.
                                  -----------------     -----------------
Available remittance amount            5,312,358.24          5,312,358.24
Principal remittance amount            2,110,064.03          2,110,064.03
Interest remittance amount             3,202,294.21          3,202,294.21