<TABLE> <S> <C>

<PAGE>

<ARTICLE> 7
<LEGEND>
THIS SCHEDULE CONTAINS SUMMARY FINANCIAL INFORMATION EXTRACTED FORM JOHN HANCOCK
FINANCIAL SERVICES,INC. CONSOLIDATED BALANCE SHEETS, CONSOLIDATED STATEMENTS OF
INCOME, AND CONSOLIDATED STATEMENTS OF CHANGES IN POLICYHOLDERS' EQUITY AND IS
QUALIFIED IN ITS ENTIRETY BY REFERENCE TO THE ANNUAL REPORT FILED ON FORM 10-K
FOR THE FISCAL YEAR ENDED DECEMBER 31, 1999 AS OF, OR FOR THE YEAR ENDED
DECEMBER 31, 1999 OF JOHN HANCOCK FINANCIAL SERVICES, INC.
</LEGEND>
<MULTIPLIER> 1,000,000
<CURRENCY> U.S.

<S>                             <C>
<PERIOD-TYPE>                   YEAR
<FISCAL-YEAR-END>                          DEC-31-1999
<PERIOD-START>                             JAN-01-1999
<PERIOD-END>                               DEC-31-1999
<EXCHANGE-RATE>                                      1
<DEBT-HELD-FOR-SALE>                            17,070
<DEBT-CARRYING-VALUE>                           13,800
<DEBT-MARKET-VALUE>                             13,448
<EQUITIES>                                       1,316
<MORTGAGE>                                      10,736
<REAL-ESTATE>                                      549
<TOTAL-INVEST>                                  46,888
<CASH>                                           1,818
<RECOVER-REINSURE>                               1,873
<DEFERRED-ACQUISITION>                           3,235
<TOTAL-ASSETS>                                  84,456
<POLICY-LOSSES>                                 31,106
<UNEARNED-PREMIUMS>                                490
<POLICY-OTHER>                                     359
<POLICY-HOLDER-FUNDS>                           15,562
<NOTES-PAYABLE>                                    991
<PREFERRED-MANDATORY>                                0
<PREFERRED>                                          0
<COMMON>                                             0
<OTHER-SE>                                       4,791
<TOTAL-LIABILITY-AND-EQUITY>                    84,456
<PREMIUMS>                                       2,718
<INVESTMENT-INCOME>                              3,574
<INVESTMENT-GAINS>                                 175
<OTHER-INCOME>                                   1,391
<BENEFITS>                                       5,418
<UNDERWRITING-AMORTIZATION>                        167
<UNDERWRITING-OTHER>                             1,412
<INCOME-PRETAX>                                    358
<INCOME-TAX>                                       102
<INCOME-CONTINUING>                                257
<DISCONTINUED>                                       0
<EXTRAORDINARY>                                     94
<CHANGES>                                           10
<NET-INCOME>                                       153
<EPS-BASIC>                                          0
<EPS-DILUTED>                                        0
<RESERVE-OPEN>                                       0
<PROVISION-CURRENT>                                  0
<PROVISION-PRIOR>                                    0
<PAYMENTS-CURRENT>                                   0
<PAYMENTS-PRIOR>                                     0
<RESERVE-CLOSE>                                      0
<CUMULATIVE-DEFICIENCY>                              0


</TABLE>