Payment Date: 05/25/00
------------------------------------------------------------
BA MORTGAGE SECURITIES, INC.
Mortgage Pass-Through Certificates, Series 1998-5
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 IA-1 0.00 6.750000% 0.00 0.00 0.00 0.00 0.00
IA-2 124,744,017.03 6.750000% 656,658.00 701,685.10 1,358,343.10 0.00 0.00
IA-3 2,500,000.00 6.750000% 0.00 14,062.50 14,062.50 0.00 0.00
IA-4 38,062,479.00 6.750000% 0.00 214,101.44 214,101.44 0.00 0.00
IA-5 79,934,752.47 6.750000% 290,877.77 449,632.98 740,510.75 0.00 0.00
IA-6 19,926,842.00 7.200000% 0.00 119,561.05 119,561.05 0.00 0.00
IA-7 1,328,457.00 0.000000% 0.00 0.00 0.00 0.00 0.00
IA-8 44,029,314.00 6.750000% 0.00 247,664.89 247,664.89 0.00 0.00
IA-9 4,700,000.00 6.875000% 0.00 26,927.08 26,927.08 0.00 0.00
IA-10 1,950,000.00 6.750000% 0.00 10,968.75 10,968.75 0.00 0.00
IA-11 1,000,000.00 7.000000% 0.00 5,833.33 5,833.33 0.00 0.00
IA-12 87,038.00 0.000000% 0.00 0.00 0.00 0.00 0.00
I-X-1 7,030,617.15 6.750000% 0.00 39,547.22 39,547.22 0.00 0.00
I-X-2 390,323.40 6.750000% 0.00 2,195.57 2,195.57 0.00 0.00
I-PO 250,175.31 0.000000% 271.59 0.00 271.59 0.00 0.00
Residual R-I 0.00 6.750000% 0.00 0.00 0.00 0.00 0.00
----------------------------------------------------------------------------------------------------------------------------------
Subordinate IM 7,465,157.45 6.750000% 6,887.69 41,991.51 48,879.20 0.00 0.00
IB-1 3,339,675.72 6.750000% 3,081.33 18,785.68 21,867.01 0.00 0.00
IB-2 1,571,611.99 6.750000% 1,450.04 8,840.32 10,290.36 0.00 0.00
IB-3 1,375,160.25 6.750000% 1,268.78 7,735.28 9,004.06 0.00 0.00
IB-4 982,256.76 6.750000% 906.27 5,525.19 6,431.47 0.00 0.00
IB-5 982,259.97 6.750000% 906.28 5,525.21 6,431.49 0.00 0.00
----------------------------------------------------------------------------------------------------------------------------------
----------------------------------------------------------------------------------------------------------------------------------
Totals - - 334,229,196.94 - 962,307.75 1,920,583.11 2,882,890.86 - -
----------------------------------------------------------------------------------------------------------------------------------
Class Information
--------------------------------------------------------------------------------
Ending Cert. Unpaid
Type Class Code Name Notional Bal. Interest
--------------------------------------------------------------------------------
Senior IA-1 0.00 0.00
IA-2 124,087,359.03 0.00
IA-3 2,500,000.00 0.00
IA-4 38,062,479.00 0.00
IA-5 79,643,874.70 0.00
IA-6 19,926,842.00 0.00
IA-7 1,328,457.00 0.00
IA-8 44,029,314.00 0.00
IA-9 4,700,000.00 0.00
IA-10 1,950,000.00 0.00
IA-11 1,000,000.00 0.00
IA-12 87,038.00 0.00
I-X-1 7,014,092.35 0.00
I-X-2 389,893.68 0.00
I-PO 249,903.72 0.00
Residual R-I 0.00 0.00
--------------------------------------------------------------------------------
Subordinate IM 7,458,269.76 0.00
IB-1 3,336,594.39 0.00
IB-2 1,570,161.95 0.00
IB-3 1,373,891.46 0.00
IB-4 981,350.49 0.00
IB-5 981,353.69 0.00
--------------------------------------------------------------------------------
--------------------------------------------------------------------------------
Totals - - 333,266,889.19 -
--------------------------------------------------------------------------------
</TABLE>
<PAGE>
Payment Date: 05/25/00
------------------------------------------------------------
BA MORTGAGE SECURITIES, INC.
Mortgage Pass-Through Certificates, Series 1998-5
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 IA-1 0.00 6.750000% 055240JQ9 0.000000 0.000000 0.000000
IA-2 124,744,017.03 6.750000% 055240JR7 4.780702 5.108515 903.399823
IA-3 2,500,000.00 6.750000% 055240JS5 0.000000 5.625000 1,000.000000
IA-4 38,062,479.00 6.750000% 055240JT3 0.000000 5.625000 1,000.000000
IA-5 79,934,752.47 6.750000% 055240JU0 2.914203 4.504716 797.924227
IA-6 19,926,842.00 7.200000% 055240JV8 0.000000 6.000000 1,000.000000
IA-7 1,328,457.00 0.000000% 055240JW6 0.000000 0.000000 1,000.000000
IA-8 44,029,314.00 6.750000% 055240JX4 0.000000 5.625000 1,000.000000
IA-9 4,700,000.00 6.875000% 055240JY2 0.000000 5.729167 1,000.000000
IA-10 1,950,000.00 6.750000% 055240JZ9 0.000000 5.625000 1,000.000000
IA-11 1,000,000.00 7.000000% 055240KA2 0.000000 5.833333 1,000.000000
IA-12 87,038.00 0.000000% 055240KB0 0.000000 0.000000 1,000.000000
I-X-1 7,030,617.15 6.750000% 055240KC8 0.000000 4.641245 823.170857
I-X-2 390,323.40 6.750000% 055240KD6 0.000000 1.970734 349.966993
I-PO 250,175.31 0.000000% 055240KM6 1.020814 0.000000 939.307566
Residual R-I 0.00 6.750000% 055240KH7 0.000000 0.019651 0.000000
------------------------------------------------------------------------------------------------------------------------
Subordinate IM 7,465,157.45 6.750000% 055240KE4 0.907964 5.535501 983.181166
IB-1 3,339,675.72 6.750000% 055240KF1 0.907964 5.535501 983.181165
IB-2 1,571,611.99 6.750000% 055240KG9 0.907964 5.535501 983.181163
IB-3 1,375,160.25 6.750000% 055240KJ3 0.907964 5.535501 983.181166
IB-4 982,256.76 6.750000% 055240KK0 0.907964 5.535501 983.181168
IB-5 982,259.97 6.750000% 055240KL8 0.907965 5.535508 983.182413
------------------------------------------------------------------------------------------------------------------------
------------------------------------------------------------------------------------------------------------------------
Totals - - 334,229,196.94 - - - - -
------------------------------------------------------------------------------------------------------------------------
------------------------------------------------------------------------------------------------------------------------
</TABLE>
<PAGE>
------------------------------------------------------------
BA MORTGAGE SECURITIES, INC.
Mortgage Pass-Through Certificates, Series 1998-5
BANK OF AMERICA, FSB, MASTER SERVICER
------------------------------------------------------------
--------------------------------------------------------------------------------
COLLATERAL INFORMATION
--------------------------------------------------------------------------------
Total
-----
Prin balance 12,552,849.02 318,518,557.61 2,195,482.95 333,266,889.58
Loan count 35 1001 6 1042
Avg loan rate 6.865623% 7.398367% 8.198691% 7.38
Prepay amount 1,676.17 651,782.79 460.96 653,919.92
--------------------------------------------------------------------------------
FEES AND ADVANCES
--------------------------------------------------------------------------------
Total
-----
Master serv fees 2,570.95 129,415.45 449.67 132,436.06
Sub servicer fees 0.00 0.00 0.00 0.00
Trustee fees 47.13 1,197.99 8.24 1,253.36
Agg advances N/A N/A N/A N/A
Adv this period 0.00 0.00 0.00 0.00
--------------------------------------------------------------------------------
LOSSES & INSURANCE COVERAGES
--------------------------------------------------------------------------------
Total
-----
Realized losses 0.00 0.00 0.00 0.00
Cumulative losses 0.00 0.00 0.00 0.00
Coverage Amounts Total
---------------- -----
Bankruptcy 0.00 0.00 0.00 0.00
Fraud 0.00 0.00 0.00 0.00
Special Hazard 3,342,291.97 3,342,291.97 3,342,291.97 10,026,875.92
Aggregate Certificate Information
-----------------------------------------------------------------------------
Class Aggregate Aggregate Aggregate
Type Percentage Prepay Pct. End Cert. Bal.
-----------------------------------------------------------------------------
Senior 95.301936% 100.000000% 318,513,074.81
-----------------------------------------------------------------------------
Junior 4.698064% 0.000000% 15,701,621.74
-----------------------------------------------------------------------------
--------------------------------------------------------------------------------
DELINQUENCY INFORMATION
--------------------------------------------------------------------------------
Period Loan Count Ending Stated Balance
------ ---------- ---------------------
30 to 59 days 2 491,981.54
60 to 89 days 2 565,553.92
90 or more 1 311,335.66
Foreclosure 0 0.00
Totals: 5 1,368,871.12
--------------------------------------------------------------------------------
<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 2,882,890.86 2,882,890.86
Principal remittance amount 962,307.75 962,307.75
Interest remittance amount 1,920,583.11 1,920,583.11
