BANK OF BOSTON CORPORATION      EXHIBIT 12(a)
         COMPUTATION OF CONSOLIDATED RATIO OF EARNINGS TO FIXED CHARGES
                        (Excluding Interest on Deposits)

The Corporation's ratios of earnings to fixed charges (excluding interest on
deposits) for the six months ended June 30, 1996 and 1995
and for the five years ended December 31, 1995 were as follows:


                                  Six Months Ended June 30,                           Years Ended December 31,
(dollars in millions)
                                                                                                     
                                        1996          1995            1995           1994          1993          1992          1991
                                        ----          ----            ----           ----          ----          ----          ----
Net  income (loss)                  $    295      $    259        $    541      $     435     $     299     $     279     $    (113)
                                                                              
Extraordinary items, net of tax                                                         7                         (73)           (8)
Cumulative effect of changes                                                  
     in accounting principles,                                                
     net of tax                                                                                     (24)
Income tax expense (benefit)             216           225             444            349           215           153           (58)
                                       -----         -----           -----          -----         -----         -----         -----
     Pretax earnings (loss)         $    511      $    484        $    985      $     791      $    490     $     359     $    (179)
                                       =====         =====           =====          =====         =====         =====         =====
 Fixed charges:                                                               
     Portion of rental expense                                                
     (net of sublease                                                         
     rental income) which                                                     
     approximates the                                                         
     interest factor                      15            14              29             27            27            28            30
                                                                              
Interest on borrowed funds               446           500           1,021            998           378           345           362
                                       -----         -----           -----          -----         -----         -----         -----
                                                                                                                           
          Total fixed charges            461           514           1,050          1,025           405           373           392
                                       -----         -----           -----          -----         -----         -----         -----
                                                                                                                           
Earnings (for ratio calculation)    $    972      $    998        $  2,035      $   1,816     $     895     $     732     $     213
                                       =====         =====           =====          =====         =====         =====         =====
                                                                              
                                                                              
Total fixed charges                 $    461      $    514       $   1,050      $   1,025     $     405     $     373     $     392
                                       =====         =====           =====          =====         =====         =====         =====
                                                                              
Ratio of earnings to fixed                                                    
   charges                              2.11          1.94            1.94           1.77          2.21          1.96           .54
                                       =====         =====           =====          =====         =====         =====         =====



For purposes of computing the consolidated ratio of earnings to fixed charges
"earnings" represent income (loss) before extraordinary
items and cumulative effect of changes in accounting principles plus applicable
income taxes and fixed charges.  "Fixed charges" include
gross interest expense (excluding interest on deposits) and the proportion
deemed representative of the interest factor of rent expense, net
of income from subleases. For the year ended December 31, 1991, earnings were
insufficient to cover fixed charges. Additional earnings necessary for the year
ended December 31, 1991 to bring the ratio of earnings to fixed charges to a 
one-to-one basis are $179 million.