UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

FORM 10-Q

Commission File Number: 1-6887

BANK OF HAWAII CORPORATION

(Exact name of registrant as specified in its charter)

1-888-643-3888

(Registrant’s telephone number, including area code)

Indicate by check mark whether the registrant (1) has filed all reports required to be filed by Section 13 or 15(d) of the Securities Exchange Act of 1934 during the preceding 12 months (or for such shorter period that the registrant was required to file such reports), and (2) has been subject to such filing requirements for the past 90 days.

Yes x    No o

Indicate by check mark whether the registrant is a large accelerated filer, an accelerated filer, or a non-accelerated filer. See definition of “accelerated filer and large accelerated filer” in Rule 12b-2 of the Exchange Act. (Check one):

Large accelerated filer x             Accelerated filer o             Non-accelerated filer o

Indicate by check mark whether the registrant is a shell company (as defined in Rule 12b-2 of the Exchange Act).

Yes o    No x

Indicate the number of shares outstanding of each of the issuer’s classes of common stock, as of the latest practicable date.

As of October 19, 2007, there were 48,999,283 shares of common stock outstanding.

Bank of Hawaii Corporation

Form 10-Q

Index

Bank of Hawaii Corporation and Subsidiaries

Consolidated Statements of Income (Unaudited)

The accompanying notes are an integral part of the Consolidated Financial Statements (Unaudited).

3

Bank of Hawaii Corporation and Subsidiaries

Consolidated Statements of Condition (Unaudited)

The accompanying notes are an integral part of the Consolidated Financial Statements (Unaudited).

4

Bank of Hawaii Corporation and Subsidiaries

Consolidated Statements of Shareholders’ Equity (Unaudited)

The accompanying notes are an integral part of the Consolidated Financial Statements (Unaudited).

5

Bank of Hawaii Corporation and Subsidiaries

Consolidated Statements of Cash Flows

The accompanying notes are an integral part of the Consolidated Financial Statements (Unaudited).

6

Bank of Hawaii Corporation and Subsidiaries

Notes to Consolidated Financial Statements

(Unaudited)

Note 1. Summary of Significant Accounting Policies

Basis of Presentation

Bank of Hawaii Corporation (the “Parent”) is a bank holding company headquartered in Honolulu, Hawaii. Bank of Hawaii Corporation and its Subsidiaries (the “Company”) provide a broad range of financial products and services to customers in Hawaii and the Pacific Islands (Guam, nearby islands, and American Samoa). The Parent’s principal subsidiary is Bank of Hawaii (the “Bank”). All significant intercompany accounts and transactions have been eliminated in consolidation.

The accompanying unaudited consolidated financial statements of the Company have been prepared in accordance with U.S. generally accepted accounting principles (“GAAP”) for interim financial information and with the instructions to Form 10-Q and Rule 10-01 of Regulation S-X. Accordingly, they do not include all of the information and footnotes required by GAAP for complete financial statements. In the opinion of management, the consolidated financial statements reflect normal recurring adjustments necessary for a fair presentation of the results for the interim periods.

Certain prior period amounts have been reclassified to conform to current period classifications.

These statements should be read in conjunction with the audited consolidated financial statements and related notes included in the Company’s Annual Report on Form 10-K for the year ended December 31, 2006. Operating results for the nine months ended September 30, 2007 are not necessarily indicative of the results that may be expected for the year ending December 31, 2007.

Mortgage Servicing Rights

Effective January 1, 2007, the Company adopted the provisions of Statement of Financial Accounting Standards (“SFAS”) No. 156, “Accounting for Servicing of Financial Assets, an amendment of FASB Statement No. 140.”  SFAS No. 156 requires all separately recognized servicing assets and liabilities to be initially measured at fair value, if practicable. In adopting the provisions of SFAS No. 156, the Company recorded an increase in the value of mortgage servicing rights of $8.0 million and a net of tax increase to retained earnings of $5.1 million. Also, as permitted by SFAS No. 156, the Company reclassified investment securities with a carrying value of $164.2 million (“Designated Securities”) from the available-for-sale portfolio to the trading portfolio. Concurrently, the Company reclassified unrealized losses of $5.3 million, net of tax, previously recorded as a component of accumulated other comprehensive loss, to retained earnings. The Designated Securities are recorded at fair value on the Company’s statement of condition, with realized and unrealized gains and losses recorded as the change in fair value of Designated Securities in mortgage banking income. The change in fair value of Designated Securities is intended to offset changes in valuation assumptions affecting the recorded value of the Company’s mortgage servicing rights. The net after-tax cumulative-effect adjustment to adopt the provisions of SFAS No. 156 was to reduce retained earnings by $0.2 million as of January 1, 2007. The fair value measurement provisions of SFAS No. 156 were adopted for subsequent re-measurements of the Company’s mortgage servicing rights.

7

Leveraged Leases

Effective January 1, 2007, the Company adopted the provisions of Financial Accounting Standards Board (“FASB”) Staff Position (“FSP”) No. 13-2, “Accounting for a Change or Projected Change in the Timing of Cash Flows Relating to Income Taxes Generated by a Leveraged Lease Transaction,” which amends SFAS No. 13, “Accounting for Leases.”  The timing of cash flows relating to income taxes generated by a leveraged lease is an important assumption that affects the periodic income recognized by the lessor for that lease transaction. Under the provisions of FSP No. 13-2, a change or projected change in the timing of cash flows relating to income taxes generated by a leveraged lease transaction requires a recalculation of the total and periodic income related to the leveraged lease transaction. During the years 1998 through 2002, the Company entered into one leveraged lease transaction known as a Lease In-Lease Out (“LILO”) transaction and five leveraged lease transactions known as Sale In-Lease Out (“SILO”) transactions. As of January 1, 2007, these LILO and SILO transactions were in various stages of review by the Internal Revenue Service (the “IRS”). Management expected that the outcome of these reviews would change the projected timing of cash flows from these leveraged leases. As a result, in adopting the provisions of FSP No. 13-2 on January 1, 2007, the Company recorded an after-tax cumulative-effect adjustment to reduce retained earnings by $27.1 million. This adjustment represented a $42.7 million reduction in the carrying value of lease financing balances and a $15.6 million reduction in deferred income taxes payable. The provisions of FSP No. 13-2 also provide that subsequent changes in the timing of projected cash flows that results in a change in the net investment of a leveraged lease is to be recorded as a gain or loss in the Company’s results of operations in the period in which the assumption is changed.

During the second quarter of 2007, the Company reached an agreement with the IRS as to the terms of settlement of the issues related to the Company’s LILO transaction. See Note 4 for further discussion on the matter. There has been no change in the status of the IRS review of the Company’s SILO transactions.

Income Taxes

Effective January 1, 2007, the Company adopted the provisions of FASB Interpretation No. (“FIN”) 48, “Accounting for Uncertainty in Income Taxes, an interpretation of FASB Statement No. 109.”  FIN 48 established a recognition threshold and measurement attributes for income tax positions recognized in the Company’s financial statements in accordance with SFAS No. 109, “Accounting for Income Taxes.”  In evaluating a tax position for recognition, FIN 48 requires that the Company judgmentally evaluate whether it is more-likely-than-not that a tax position will be sustained upon examination, including resolution of related appeals or litigation processes, based on the technical merits of the position. If the tax position meets the more-likely-than-not recognition threshold, the tax position is measured and recognized in the Company’s financial statements as the largest amount of tax benefit that, in management’s judgment, is greater than 50% likely of being realized upon ultimate settlement. Effective January 1, 2007, the Company also adopted the provisions of FSP No. FIN 48-1, “Definition of Settlement in FASB Interpretation No. 48,” which provides guidance on how an enterprise should determine whether a tax position is effectively settled for the purpose of recognizing a liability for previously unrecognized tax benefits in the statement of condition. In adopting the provisions of FIN 48 and FSP No. FIN 48-1 on January 1, 2007, the Company recorded an after-tax cumulative-effect adjustment to reduce retained earnings by $7.2 million.

See Note 4 for further discussion on the Company’s FIN 48 tax positions as of January 1, 2007 and September 30, 2007.

8

Future Application of Accounting Pronouncements

In September 2006, the FASB issued SFAS No. 157, “Fair Value Measurements,” which is effective for the Company on January 1, 2008. SFAS No. 157 established a framework for measuring fair value, while expanding fair value measurement disclosures. SFAS No. 157 established a fair value hierarchy that distinguishes between independent observable inputs and unobservable inputs based on the best information available. SFAS No. 157 expands disclosures about the use of fair value to measure assets and liabilities, the effect of these measurements on earnings for the period, and the inputs used to measure fair value. Management is currently evaluating the effect that the provisions of SFAS No. 157 will have on the Company’s statements of income and condition.

In February 2007, the FASB issued SFAS No. 159, “The Fair Value Option for Financial Assets and Financial Liabilities, including an amendment of FASB Statement No. 115,” which is effective for the Company on January 1, 2008. SFAS No. 159 provides entities with an option to report selected financial assets and financial liabilities, on an instrument by instrument basis, at fair value, with the objective of reducing both the complexity in accounting for financial instruments and the volatility in earnings caused by measuring related assets and liabilities differently. Management is currently evaluating the effect that the provisions of SFAS No. 159 will have on the Company’s statements of income and condition.

Note 2. Mortgage Banking

The Company’s portfolio of residential mortgage loans serviced for third parties was $2.5 billion as of September 30, 2007 and 2006. The Company’s mortgage servicing activities includes collecting principal, interest, and escrow payments from borrowers; making tax and insurance payments on behalf of the borrowers; monitoring delinquencies and executing foreclosure proceedings; and accounting for and remitting principal and interest payments to investors. The Company’s residential mortgage loan servicing portfolio is comprised primarily of fixed rate loans concentrated in Hawaii.

Mortgage servicing rights are recognized as assets when mortgage loans are sold and the rights to service those loans are retained. As of December 31, 2006, the Company recorded its mortgage servicing rights at their relative fair values on the date the loans were sold and were carried at the lower of the initial recorded value, adjusted for amortization, or fair value. As of January 1, 2007, the Company adopted the provisions of SFAS No. 156 which requires all separately recognized servicing assets to be initially measured at fair value, if practicable. As of January 1, 2007, the Company identified its entire balance of mortgage servicing rights as one class of servicing assets for this measurement. The table below reconciles the balance of the Company’s mortgage servicing rights as of December 31, 2006 and January 1, 2007.

9

The changes in the fair value of the Company’s mortgage servicing rights for the three and nine months ended September 30, 2007 were as follows:

1 Principally represents changes in discount rates and loan repayment rate assumptions, mostly due to changes in interest rates.

2 Principally represents changes due to the realization of expected cash flows over time.

The Company estimates the fair value of its mortgage servicing rights by using a discounted cash flow model to calculate the present value of estimated future net servicing income. The model uses factors such as loan repayment rates, costs to service, ancillary income, impound account balances, and interest rate assumptions in its calculations. Risks inherent in the valuation of mortgage servicing rights include changes in interest rates, higher than expected loan repayment rates, and the delayed receipt of cash flows, among other factors. The key assumptions used in estimating the fair value of the Company’s mortgage servicing rights as of September 30, 2007 were as follows:

1 Represents annualized loan repayment rate assumption.

For the three and nine months ended September 30, 2007 and 2006, the Company’s mortgage banking income was comprised of the following:

Mortgage Banking Income (Unaudited)