Payment Date: 05/25/00
------------------------------------------------------------
BANK OF AMERICA MORTGAGE SECURITIES, INC.
MORTGAGE PASS-THROUGH CERTIFICATES, Series 1999-4
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 A1 116,436,291.55 6.500000% 958,692.82 630,696.58 1,589,389.40 0.00 0.00
A2 183,853,004.31 6.500000% 1,262,457.27 995,870.44 2,258,327.71 0.00 0.00
A3 11,465,570.18 6.500000% 135,571.34 62,105.17 197,676.51 0.00 0.00
A4 6,457,000.00 6.500000% 0.00 34,975.42 34,975.42 0.00 0.00
A5 5,000,000.00 6.500000% 0.00 27,083.33 27,083.33 0.00 0.00
A6 19,715,000.00 6.500000% 0.00 106,789.58 106,789.58 0.00 0.00
A7 45,000,000.00 6.500000% 0.00 243,750.00 243,750.00 0.00 0.00
A8 10,000,000.00 6.250000% 0.00 52,083.33 52,083.33 0.00 0.00
A9 2,571,000.00 6.750000% 0.00 14,461.88 14,461.88 0.00 0.00
A10 2,350,000.00 6.750000% 0.00 13,218.75 13,218.75 0.00 0.00
A11 1,295,000.00 6.750000% 0.00 7,284.38 7,284.38 0.00 0.00
A12 1,377,000.00 6.750000% 0.00 7,745.63 7,745.63 0.00 0.00
A13 2,407,000.00 6.750000% 0.00 13,539.38 13,539.38 0.00 0.00
APO 538,615.96 0.000000% 625.95 0.00 625.95 0.00 0.00
Residual AR 0.00 6.500000% 0.00 0.00 0.00 0.00 0.00
----------------------------------------------------------------------------------------------------------------------------------
Subordinate B1 9,576,363.73 6.500000% 8,753.47 51,871.97 60,625.44 0.00 0.00
B2 3,341,236.46 6.500000% 3,054.12 18,098.36 21,152.49 0.00 0.00
B3 1,559,771.52 6.500000% 1,425.74 8,448.76 9,874.50 0.00 0.00
B4 1,559,771.52 6.500000% 1,425.74 8,448.76 9,874.50 0.00 0.00
B5 891,722.17 6.500000% 815.10 4,830.16 5,645.26 0.00 0.00
B6 891,244.64 6.500000% 814.66 4,827.58 5,642.23 0.00 0.00
----------------------------------------------------------------------------------------------------------------------------------
----------------------------------------------------------------------------------------------------------------------------------
Totals - - 426,285,592.05 - 2,373,636.20 2,306,129.45 4,679,765.65 - -
----------------------------------------------------------------------------------------------------------------------------------
Class Information
--------------------------------------------------------------------------------
Ending Cert. Unpaid
Type Class Code Name Notional Bal. Interest
--------------------------------------------------------------------------------
Senior A1 115,477,598.73 0.00
A2 182,590,547.05 0.00
A3 11,329,998.84 0.00
A4 6,457,000.00 0.00
A5 5,000,000.00 0.00
A6 19,715,000.00 0.00
A7 45,000,000.00 0.00
A8 10,000,000.00 0.00
A9 2,571,000.00 0.00
A10 2,350,000.00 0.00
A11 1,295,000.00 0.00
A12 1,377,000.00 0.00
A13 2,407,000.00 0.00
APO 537,990.01 0.00
Residual AR 0.00 0.00
--------------------------------------------------------------------------------
Subordinate B1 9,567,610.27 0.00
B2 3,338,182.33 0.00
B3 1,558,345.78 0.00
B4 1,558,345.78 0.00
B5 890,907.07 0.00
B6 890,429.98 0.00
--------------------------------------------------------------------------------
--------------------------------------------------------------------------------
Totals - - 423,911,955.85 -
--------------------------------------------------------------------------------
</TABLE>
<PAGE>
Payment Date: 05/25/00
------------------------------------------------------------
BANK OF AMERICA MORTGAGE SECURITIES, INC.
MORTGAGE PASS-THROUGH CERTIFICATES, Series 1999-4
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 A1 116,436,291.55 6.500000% 060506CT7 7.608673 5.005528 916.488879
A2 183,853,004.31 6.500000% 060506CU4 6.426452 5.069410 929.464675
A3 11,465,570.18 6.500000% 060506CV2 10.576637 4.845153 883.913157
A4 6,457,000.00 6.500000% 060506CW0 0.000000 5.416667 1,000.000000
A5 5,000,000.00 6.500000% 060506CX8 0.000000 5.416667 1,000.000000
A6 19,715,000.00 6.500000% 060506CY6 0.000000 5.416667 1,000.000000
A7 45,000,000.00 6.500000% 060506CZ3 0.000000 5.416667 1,000.000000
A8 10,000,000.00 6.250000% 060506DA7 0.000000 5.208333 1,000.000000
A9 2,571,000.00 6.750000% 060506DB5 0.000000 5.625000 1,000.000000
A10 2,350,000.00 6.750000% 060506DC3 0.000000 5.625000 1,000.000000
A11 1,295,000.00 6.750000% 060506DD1 0.000000 5.625000 1,000.000000
A12 1,377,000.00 6.750000% 060506DE9 0.000000 5.625000 1,000.000000
A13 2,407,000.00 6.750000% 060506DF6 0.000000 5.625000 1,000.000000
APO 538,615.96 0.000000% 060506DG4 1.093970 0.000000 940.242814
Residual AR 0.00 6.500000% 060506DH2 0.000000 0.000000 0.000000
------------------------------------------------------------------------------------------------------------------------
Subordinate B1 9,576,363.73 6.500000% 060506DJ8 0.904657 5.360890 988.798085
B2 3,341,236.46 6.500000% 060506DK5 0.904657 5.360890 988.798085
B3 1,559,771.52 6.500000% 060506DL3 0.904657 5.360890 988.798085
B4 1,559,771.52 6.500000% 060506DM1 0.904657 5.360890 988.798085
B5 891,722.17 6.500000% 060506DN9 0.904657 5.360890 988.798085
B6 891,244.64 6.500000% 060506DP4 0.904657 5.360890 988.798085
------------------------------------------------------------------------------------------------------------------------
------------------------------------------------------------------------------------------------------------------------
Totals - - 426,285,592.05 - - - - -
------------------------------------------------------------------------------------------------------------------------
------------------------------------------------------------------------------------------------------------------------
</TABLE>
<PAGE>
------------------------------------------------------------
BANK OF AMERICA MORTGAGE SECURITIES, INC.
MORTGAGE PASS-THROUGH CERTIFICATES, Series 1999-4
Bank of America, FSB, Master Servicer
------------------------------------------------------------
--------------------------------------------------------------------------------
COLLATERAL INFORMATION
--------------------------------------------------------------------------------
Total
-----
Prin balance 423,911,955.44 423,911,955.44
Loan count 1192 1192
Avg loan rate 7.064325% 7.06
Prepay amount 1,983,937.66 1,983,937.66
--------------------------------------------------------------------------------
FEES AND ADVANCES
--------------------------------------------------------------------------------
Total
-----
Master serv fees 198,377.07 198,377.07
Sub servicer fees 0.00 0.00
Trustee fees 1,420.95 1,420.95
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 0.00 0.00
Fraud 4,500,148.00 4,500,148.00
Special Hazard 4,262,855.92 4,262,855.92
Aggregate Certificate Information
-----------------------------------------------------------------------------
Class Aggregate Aggregate Aggregate
Type Percentage Prepay Pct. End Cert. Bal.
-----------------------------------------------------------------------------
Senior 95.823340% 100.000000% 408,465,482.00
-----------------------------------------------------------------------------
Junior 4.176660% 0.000000% 17,803,821.22
-----------------------------------------------------------------------------
--------------------------------------------------------------------------------
DELINQUENCY INFORMATION
--------------------------------------------------------------------------------
Period Loan Count Ending Stated Balance
------ ---------- ---------------------
30 to 59 days 2 874,763.98
60 to 89 days 0 0.00
90 or more 0 0.00
Foreclosure 0 0.00
Totals: 2 874,763.98
--------------------------------------------------------------------------------
<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 4,679,765.65 4,679,765.65
Principal remittance amount 2,373,636.20 2,373,636.20
Interest remittance amount 2,306,129.45 2,306,129.45
