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