Payment Date: 04/25/00
------------------------------------------------------------
BA MORTGAGE SECURITIES, INC.
Mortgage Pass-Through Certificates, Series 1998-6
BANK OF AMERICA, FSB, MASTER SERVICER
------------------------------------------------------------
<TABLE>
<CAPTION>
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
----------------------------------------------------------------------------------------------------------------------------------
<S> <C> <C> <C> <C> <C> <C> <C> <C> <C>
Senior A-1 87,502,791.79 6.250000% 1,239,799.75 455,743.71 1,695,543.46 0.00 0.00
A-2 143,742,224.32 6.250000% 1,718,947.93 748,657.42 2,467,605.35 0.00 0.00
A-3 3,780,005.00 7.000000% 0.00 22,050.03 22,050.03 0.00 0.00
A-4 38,457,652.00 6.250000% 0.00 200,300.27 200,300.27 0.00 0.00
A-5 9,871,494.00 6.750000% 0.00 55,527.15 55,527.15 0.00 0.00
A-6 2,381,997.00 0.000000% 0.00 0.00 0.00 0.00 0.00
A-7 4,560,673.00 6.500000% 0.00 24,703.65 24,703.65 0.00 0.00
A-8 16,380,814.29 6.250000% 240,221.48 85,316.74 325,538.22 0.00 0.00
A-9 8,475,366.63 6.500000% 101,353.06 45,908.24 147,261.29 0.00 0.00
A-10 339,015.07 0.000000% 4,054.13 0.00 4,054.13 0.00 0.00
A-11 3,780,006.00 6.500000% 0.00 20,475.03 20,475.03 0.00 0.00
A-12 4,839,027.00 7.000000% 0.00 28,227.66 28,227.66 0.00 0.00
A-13 179,224.00 0.000000% 0.00 0.00 0.00 0.00 0.00
A-14 2,244,655.00 6.250000% 0.00 11,690.91 11,690.91 0.00 0.00
A-15 3,093,004.00 6.500000% 0.00 16,753.77 16,753.77 0.00 0.00
A-16 2,328,283.00 7.000000% 0.00 13,581.65 13,581.65 0.00 0.00
A-17 179,099.00 0.000000% 0.00 0.00 0.00 0.00 0.00
A-18 1,893,933.00 6.928750% 0.00 10,935.49 10,935.49 0.00 0.00
A-19 350,729.00 5.784750% 0.00 1,690.73 1,690.73 0.00 0.00
Residual R 0.00 6.250000% 0.00 0.00 0.00 0.00 0.00
----------------------------------------------------------------------------------------------------------------------------------
Subordinate M 7,704,142.68 6.250000% 7,242.10 40,125.74 47,367.84 0.00 0.00
B-1 3,358,217.10 6.250000% 3,156.81 17,490.71 20,647.53 0.00 0.00
B-2 1,580,337.11 6.250000% 1,485.56 8,230.92 9,716.48 0.00 0.00
B-3 1,185,252.34 6.250000% 1,114.17 6,173.19 7,287.36 0.00 0.00
B-4 987,710.45 6.250000% 928.47 5,144.33 6,072.80 0.00 0.00
B-5 987,712.99 6.250000% 928.48 5,144.34 6,072.81 0.00 0.00
----------------------------------------------------------------------------------------------------------------------------------
----------------------------------------------------------------------------------------------------------------------------------
Totals - - 350,183,365.77 - 3,319,231.93 1,823,871.68 5,143,103.61 - -
----------------------------------------------------------------------------------------------------------------------------------
Class Information
--------------------------------------------------------------------------------
Ending Cert. Unpaid
Type Class Code Name Notional Bal. Interest
--------------------------------------------------------------------------------
Senior A-1 86,262,992.04 0.00
A-2 142,023,276.39 0.00
A-3 3,780,005.00 0.00
A-4 38,457,652.00 0.00
A-5 9,871,494.00 0.00
A-6 2,381,997.00 0.00
A-7 4,560,673.00 0.00
A-8 16,140,592.81 0.00
A-9 8,374,013.57 0.00
A-10 334,960.94 0.00
A-11 3,780,006.00 0.00
A-12 4,839,027.00 0.00
A-13 179,224.00 0.00
A-14 2,244,655.00 0.00
A-15 3,093,004.00 0.00
A-16 2,328,283.00 0.00
A-17 179,099.00 0.00
A-18 1,893,933.00 0.00
A-19 350,729.00 0.00
Residual R 0.00 0.00
--------------------------------------------------------------------------------
Subordinate M 7,696,900.59 0.00
B-1 3,355,060.29 0.00
B-2 1,578,851.55 0.00
B-3 1,184,138.17 0.00
B-4 986,781.98 0.00
B-5 986,784.51 0.00
--------------------------------------------------------------------------------
--------------------------------------------------------------------------------
Totals - - 346,864,133.84 -
--------------------------------------------------------------------------------
</TABLE>
<PAGE>
Payment Date: 04/25/00
------------------------------------------------------------
BA MORTGAGE SECURITIES, INC.
Mortgage Pass-Through Certificates, Series 1998-6
BANK OF AMERICA, FSB, MASTER SERVICER
------------------------------------------------------------
<TABLE>
<CAPTION>
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.
------------------------------------------------------------------------------------------------------------------------
<S> <C> <C> <C> <C> <C> <C> <C> <C>
------------------------------------------------------------------------------------------------------------------------
Senior A-1 87,502,791.79 6.250000% 055240KN4 11.659218 4.285866 811.226985
A-2 143,742,224.32 6.250000% 055240KP9 10.120112 4.407636 836.146051
A-3 3,780,005.00 7.000000% 055240KQ7 0.000000 5.833333 1,000.000000
A-4 38,457,652.00 6.250000% 055240KR5 0.000000 5.208333 1,000.000000
A-5 9,871,494.00 6.750000% 055240KS3 0.000000 5.625000 1,000.000000
A-6 2,381,997.00 0.000000% 055240KT1 0.000000 0.000000 1,000.000000
A-7 4,560,673.00 6.500000% 055240KU8 0.000000 5.416667 1,000.000000
A-8 16,380,814.29 6.250000% 055240KV6 11.993084 4.259448 805.820909
A-9 8,475,366.63 6.500000% 055240KW4 10.120112 4.583942 836.146051
A-10 339,015.07 0.000000% 055240KX2 10.120112 0.000000 836.146040
A-11 3,780,006.00 6.500000% 055240KY0 0.000000 5.416667 1,000.000000
A-12 4,839,027.00 7.000000% 055240KZ7 0.000000 5.833333 1,000.000000
A-13 179,224.00 0.000000% 055240LA1 0.000000 0.000000 1,000.000000
A-14 2,244,655.00 6.250000% 055240LB9 0.000000 5.208333 1,000.000000
A-15 3,093,004.00 6.500000% 055240LC7 0.000000 5.416667 1,000.000000
A-16 2,328,283.00 7.000000% 055240LD5 0.000000 5.833333 1,000.000000
A-17 179,099.00 0.000000% 055240LE3 0.000000 0.000000 1,000.000000
A-18 1,893,933.00 6.928750% 055240LF0 0.000000 5.773958 1,000.000000
A-19 350,729.00 5.784750% 055240LG8 0.000000 4.820625 1,000.000000
Residual R 0.00 6.250000% 055240LL7 0.000000 0.000000 0.000000
------------------------------------------------------------------------------------------------------------------------
Subordinate M 7,704,142.68 6.250000% 055240LH6 0.927082 5.136615 985.303035
B-1 3,358,217.10 6.250000% 055240LJ2 0.927082 5.136615 985.303035
B-2 1,580,337.11 6.250000% 055240LK9 0.927082 5.136615 985.303034
B-3 1,185,252.34 6.250000% 055240LM5 0.927082 5.136615 985.303035
B-4 987,710.45 6.250000% 055240LN3 0.927082 5.136615 985.303040
B-5 987,712.99 6.250000% 055240LP8 0.927082 5.136615 985.303037
------------------------------------------------------------------------------------------------------------------------
------------------------------------------------------------------------------------------------------------------------
Totals - - 350,183,365.77 - - - - -
------------------------------------------------------------------------------------------------------------------------
------------------------------------------------------------------------------------------------------------------------
</TABLE>
<PAGE>
------------------------------------------------------------
BA MORTGAGE SECURITIES, INC.
Mortgage Pass-Through Certificates, Series 1998-6
BANK OF AMERICA, FSB, MASTER SERVICER
------------------------------------------------------------
--------------------------------------------------------------------------------
COLLATERAL INFORMATION
--------------------------------------------------------------------------------
Total
-----
Prin balance 346,864,140.90 346,864,140.90
Loan count 1055 1055
Avg loan rate 7.242795% 7.24
Prepay amount 2,990,050.34 2,990,050.34
--------------------------------------------------------------------------------
FEES AND ADVANCES
--------------------------------------------------------------------------------
Total
-----
Master serv fees 284,271.44 284,271.44
Sub servicer fees 0.00 0.00
Trustee fees 1,313.19 1,313.19
Agg advances N/A N/A
Adv this period 0.00 0.00
--------------------------------------------------------------------------------
LOSSES & INSURANCE COVERAGES
--------------------------------------------------------------------------------
Total
-----
Realized losses 0.00 0.00
Cumulative losses 0.00 0.00
Coverage Amounts Total
---------------- -----
Bankruptcy 100,000.00 100,000.00
Fraud 4,006,005.38 4,006,005.38
Special Hazard 4,167,856.78 4,167,856.78
Aggregate Certificate Information
-----------------------------------------------------------------------------
Class Aggregate Aggregate Aggregate
Type Percentage Prepay Pct. End Cert. Bal.
-----------------------------------------------------------------------------
Senior 95.491166% 100.000000% 334,379,993.09
-----------------------------------------------------------------------------
Junior 4.508834% 0.000000% 15,788,517.09
-----------------------------------------------------------------------------
--------------------------------------------------------------------------------
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
--------------------------------------------------------------------------------
<PAGE>
--------------------------------------------------------------------------------
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
<PAGE>
--------------------------------------------------------------------------------
OTHER INFORMATION
--------------------------------------------------------------------------------
Amount/Withdrawal Total/Ending Bal.
----------------- -----------------
Available remittance amount 5,143,103.61 5,143,103.61
Principal remittance amount 3,319,231.93 3,319,231.93
Interest remittance amount 1,823,871.68 1,823,871.68
