Payment Date: 06/25/00
------------------------------------------------------------
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 85,796,260.39 6.250000% 446,078.59 446,855.52 892,934.11 0.00 0.00
A-2 141,376,165.93 6.250000% 618,475.58 736,334.20 1,354,809.78 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 16,050,159.69 6.250000% 86,431.42 83,594.58 170,026.01 0.00 0.00
A-9 8,335,858.47 6.500000% 36,466.72 45,152.57 81,619.29 0.00 0.00
A-10 333,434.73 0.000000% 1,458.67 0.00 1,458.67 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 7.410000% 0.00 11,695.04 11,695.04 0.00 0.00
A-19 350,729.00 3.186000% 0.00 931.19 931.19 0.00 0.00
Residual R 0.00 6.250000% 0.00 0.00 0.00 0.00 0.00
----------------------------------------------------------------------------------------------------------------------------------
Subordinate M 7,689,593.41 6.250000% 7,367.19 40,049.97 47,417.16 0.00 0.00
B-1 3,351,875.11 6.250000% 3,211.34 17,457.68 20,669.02 0.00 0.00
B-2 1,577,352.64 6.250000% 1,511.22 8,215.38 9,726.60 0.00 0.00
B-3 1,183,013.99 6.250000% 1,133.41 6,161.53 7,294.94 0.00 0.00
B-4 985,845.16 6.250000% 944.51 5,134.61 6,079.12 0.00 0.00
B-5 985,847.69 6.250000% 944.51 5,134.62 6,079.14 0.00 0.00
----------------------------------------------------------------------------------------------------------------------------------
----------------------------------------------------------------------------------------------------------------------------------
Totals - - 345,605,188.22 - 1,204,023.17 1,800,027.01 3,004,050.18 - -
----------------------------------------------------------------------------------------------------------------------------------
Class Information
--------------------------------------------------------------------------------
Ending Cert. Unpaid
Type Class Code Name Notional Bal. Interest
--------------------------------------------------------------------------------
Senior A-1 85,350,181.80 0.00
A-2 140,757,690.35 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 15,963,728.26 0.00
A-9 8,299,391.76 0.00
A-10 331,976.06 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 7,682,226.22 0.00
B-1 3,348,663.77 0.00
B-2 1,575,841.43 0.00
B-3 1,181,880.58 0.00
B-4 984,900.65 0.00
B-5 984,903.18 0.00
--------------------------------------------------------------------------------
--------------------------------------------------------------------------------
Totals - - 344,401,165.04 -
--------------------------------------------------------------------------------
</TABLE>
<PAGE>
Payment Date: 06/25/00
------------------------------------------------------------
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 85,796,260.39 6.250000% 055240KN4 4.194974 4.202280 802.642814
A-2 141,376,165.93 6.250000% 055240KP9 3.641205 4.335085 828.695055
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 16,050,159.69 6.250000% 055240KV6 4.315099 4.173469 796.990927
A-9 8,335,858.47 6.500000% 055240KW4 3.641205 4.508488 828.695056
A-10 333,434.73 0.000000% 055240KX2 3.641205 0.000000 828.695045
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 7.410000% 055240LF0 0.000000 6.175000 1,000.000000
A-19 350,729.00 3.186000% 055240LG8 0.000000 2.655000 1,000.000000
Residual R 0.00 6.250000% 055240LL7 0.000000 0.000000 0.000000
------------------------------------------------------------------------------------------------------------------------
Subordinate M 7,689,593.41 6.250000% 055240LH6 0.943096 5.126915 983.424526
B-1 3,351,875.11 6.250000% 055240LJ2 0.943096 5.126915 983.424526
B-2 1,577,352.64 6.250000% 055240LK9 0.943096 5.126915 983.424525
B-3 1,183,013.99 6.250000% 055240LM5 0.943096 5.126915 983.424526
B-4 985,845.16 6.250000% 055240LN3 0.943096 5.126915 983.424531
B-5 985,847.69 6.250000% 055240LP8 0.943096 5.126915 983.424528
------------------------------------------------------------------------------------------------------------------------
------------------------------------------------------------------------------------------------------------------------
Totals - - 345,605,188.22 - - - - -
------------------------------------------------------------------------------------------------------------------------
------------------------------------------------------------------------------------------------------------------------
</TABLE>
<PAGE>
------------------------------------------------------------
BA MORTGAGE SECURITIES, INC.
Mortgage Pass-Through Certificates, Series 1998-6
BANK OF AMERICA, FSB, MASTER SERVICER
------------------------------------------------------------
--------------------------------------------------------------------------------
COLLATERAL INFORMATION
--------------------------------------------------------------------------------
Total
-----
Prin balance 344,401,171.68 344,401,171.68
Loan count 1044 1044
Avg loan rate 7.241747% 7.24
Prepay amount 872,903.72 872,903.72
--------------------------------------------------------------------------------
FEES AND ADVANCES
--------------------------------------------------------------------------------
Total
-----
Master serv fees 283,026.47 283,026.47
Sub servicer fees 0.00 0.00
Trustee fees 1,296.02 1,296.02
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 4,159,968.04 4,159,968.04
Aggregate Certificate Information
-----------------------------------------------------------------------------
Class Aggregate Aggregate Aggregate
Type Percentage Prepay Pct. End Cert. Bal.
-----------------------------------------------------------------------------
Senior 95.440142% 100.000000% 329,831,660.21
-----------------------------------------------------------------------------
Junior 4.559858% 0.000000% 15,758,415.82
-----------------------------------------------------------------------------
--------------------------------------------------------------------------------
DELINQUENCY INFORMATION
--------------------------------------------------------------------------------
Period Loan Count Ending Stated Balance
------ ---------- ---------------------
30 to 59 days 2 740,691.34
60 to 89 days 0 0.00
90 or more 0 0.00
Foreclosure 0 0.00
Totals: 2 740,691.34
--------------------------------------------------------------------------------
<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 3,004,050.18 3,004,050.18
Principal remittance amount 1,204,023.17 1,204,023.17
Interest remittance amount 1,800,027.01 1,800,027.01
