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Exhibit 12. Statement re: Computation of Ratios

BancWest Corporation and Subsidiaries
Computation of Consolidated Ratios of Earnings to Fixed Charges

|                                                                      |                                          |   |                    |         |                   |   |                        |         |      |   |         |         |   |   |         |         |  
|--------------------------------------------------------------------- | ---------------------------------------- | - | ------------------ | ------- | ----------------- | - | ---------------------- | ------- | ---- | - | ------- | ------- | - | - | ------- | ------- | -
|                                                                      |                                          |   | Three Months Ended |         | Nine Months Ended
|                                                                      |                                          |   | September 30,      |         | September 30,    
|                                                                      |                                          |   |                    |         |                  
|                                                                      |                                          |   | 2003               |         | 2002              |   | 2003                   |         | 2002
|                                                                      |                                          |   |                    |         |                   |   |                        |         |     
|                                                                      |                                          |   |                    |         |                   |   | (dollars in thousands) |         |      |   |        
|Income
before income taxes and cumulative effect of accounting change |                                          | $ | 183,880            |         |                   | $ | 161,709                |         |      | $ | 523,853 |         |   | $ | 428,309 |        
|                                                                      |                                          |   |                    |         |                   |   |                        |         |      |   |         |         |   |   |         |        
|Fixed
charges(1):                                                     |                                          |   |                    |         |                   |   |                        |         |      |   |         |         |   |   |         |        
|                                                                      | Interest expense                         |   |                    | 92,908  |                   |   |                        | 123,814 |      |   |         | 293,184 |   |   |         | 354,414 |  
|                                                                      | Rental expense                           |   |                    | 3,973   |                   |   |                        | 5,775   |      |   |         | 14,424  |   |   |         | 16,245  |  
|                                                                      |                                          |   |                    |         |                   |   |                        |         |      |   |         |         |   |   |         |        
|                                                                      |                                          |   | 96,881             |         |                   |   | 129,589                |         |      |   | 307,608 |         |   |   | 370,659 |        
|Less interest on deposits                                             |                                          |   | 39,835             |         |                   |   | 76,477                 |         |      |   | 140,706 |         |   |   | 218,884 |        
|                                                                      |                                          |   |                    |         |                   |   |                        |         |      |   |         |         |   |   |         |        
|                                                                      | Net fixed charges                        |   |                    | 57,046  |                   |   |                        | 53,112  |      |   |         | 166,902 |   |   |         | 151,775 |  
|                                                                      |                                          |   |                    |         |                   |   |                        |         |      |   |         |         |   |   |         |        
|                                                                      | Earnings, excluding interest on deposits |   | $                  | 240,926 |                   |   | $                      | 214,821 |      |   | $       | 690,755 |   |   | $       | 580,084 |  
|                                                                      |                                          |   |                    |         |                   |   |                        |         |      |   |         |         |   |   |         |        
|                                                                      | Earnings, including interest on deposits |   | $                  | 280,761 |                   |   | $                      | 291,298 |      |   | $       | 831,461 |   |   | $       | 798,968 |  
|                                                                      |                                          |   |                    |         |                   |   |                        |         |      |   |         |         |   |   |         |        
|Ratio of earnings to fixed charges:                                   |                                          |   |                    |         |                   |   |                        |         |      |   |         |         |   |   |         |        
|                                                                      | Excluding interest on deposits           |   |                    | 4.22    | x                 |   |                        | 4.04    | x    |   |         | 4.14    | x |   |         | 3.82    | x
|                                                                      | Including interest on deposits           |   |                    | 2.90    | x                 |   |                        | 2.25    | x    |   |         | 2.70    | x |   |         | 2.16    | x



|(1) |  | For purposes of computing the consolidated ratios of earnings to fixed
charges, earnings represent income before income taxes plus fixed charges.
Fixed charges, excluding interest on deposits, include interest (other
than on deposits), whether expensed or capitalized, and that portion of
rental expense (generally one third) deemed representative of the interest
factor. Fixed charges, including interest on deposits, consists of the
foregoing items plus interest on deposits.
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