<TABLE> <S> <C>
<PAGE>
<ARTICLE> 9
<LEGEND>
THIS SCHEDULE CONTAINS SUMMARY FINANCIAL INFORMATION EXTRACTED FROM THE ALLFIRST
FINANCIAL INC. SEPTEMBER 30, 2000 FINANCIAL STATEMENTS AND IS QUALIFIED IN ITS
ENTIRETY BY REFERENCE TO SUCH FINANCIAL STATEMENTS.
</LEGEND>
<CIK> 0000036510
<NAME> ALLFIRST FINANCIAL INC.
<S> <C>
<PERIOD-TYPE> 9-MOS
<FISCAL-YEAR-END> DEC-31-2000
<PERIOD-END> SEP-30-2000
<CASH> 844,096
<INT-BEARING-DEPOSITS> 1,273
<FED-FUNDS-SOLD> 217,900
<TRADING-ASSETS> 4,531
<INVESTMENTS-HELD-FOR-SALE> 4,291,197
<INVESTMENTS-CARRYING> 0
<INVESTMENTS-MARKET> 0
<LOANS> 10,980,760
<ALLOWANCE> 157,351
<TOTAL-ASSETS> 18,180,703
<DEPOSITS> 12,539,621
<SHORT-TERM> 1,726,578
<LIABILITIES-OTHER> 853,839
<LONG-TERM> 1,195,857
8,526
0
<COMMON> 85,395
<OTHER-SE> 1,772,952
<TOTAL-LIABILITIES-AND-EQUITY> 18,190,703
<INTEREST-LOAN> 641,811
<INTEREST-INVEST> 191,948
<INTEREST-OTHER> 4,396
<INTEREST-TOTAL> 838,155
<INTEREST-DEPOSIT> 305,543
<INTEREST-EXPENSE> 465,391
<INTEREST-INCOME-NET> 372,764
<LOAN-LOSSES> 23,077
<SECURITIES-GAINS> 146
<EXPENSE-OTHER> 386,192
<INCOME-PRETAX> 211,375
<INCOME-PRE-EXTRAORDINARY> 211,375
<EXTRAORDINARY> 0
<CHANGES> 0
<NET-INCOME> 138,981
<EPS-BASIC> 0
<EPS-DILUTED> 0
<YIELD-ACTUAL> 3.36
<LOANS-NON> 59,334
<LOANS-PAST> 40,141
<LOANS-TROUBLED> 0
<LOANS-PROBLEM> 95,166
<ALLOWANCE-OPEN> 157,351
<CHARGE-OFFS> 30,819
<RECOVERIES> 7,742
<ALLOWANCE-CLOSE> 157,351
<ALLOWANCE-DOMESTIC> 90,136
<ALLOWANCE-FOREIGN> 7,011
<ALLOWANCE-UNALLOCATED> 60,204
</TABLE>