AFL 10-Q Quarter ended March 31, 2010

Table of Contents

UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

FORM 10-Q

(Mark One)

[ X ]  QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934

For the quarterly period ended March 31, 2010

or

[    ]  TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934

For the transition period from to

Commission File Number:    001-07434

Aflac Incorporated

(Exact name of registrant as specified in its charter)

706.323.3431

(Registrant’s telephone number, including area code)

(Former name, former address and former fiscal year, if changed since last report)

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. þ Yes ¨ No

Indicate by check mark whether the registrant has submitted electronically and posted on its corporate Web site, if any, every Interactive Data File required to be submitted and posted pursuant to Rule 405 of Regulation S-T (§232.405 of this chapter) during the preceding 12 months (or for such shorter period that the registrant was required to submit and post such files). þ Yes ¨ No

Indicate by check mark whether the registrant is a large accelerated filer, an accelerated filer, a non-accelerated filer, or a smaller reporting company. See the definitions of “large accelerated filer,” “accelerated filer” and “smaller reporting company” in Rule 12b-2 of the Exchange Act.

Indicate by check mark whether the registrant is a shell company (as defined in Rule 12b-2 of the Exchange Act). ¨ Yes þ No

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

Table of Contents

Aflac Incorporated and Subsidiaries

Quarterly Report on Form 10-Q

For the Quarter Ended March 31, 2010

Table of Contents

Items other than those listed above are omitted because they are not required or are not applicable.

i

Table of Contents

Review by Independent Registered Public Accounting Firm

The March 31, 2010, and 2009, consolidated financial statements included in this filing have been reviewed by KPMG LLP, an independent registered public accounting firm, in accordance with established professional standards and procedures for such a review.

The report of KPMG LLP commenting upon its review is included on the following page.

1

Table of Contents

Report of Independent Registered Public Accounting Firm

The Shareholders and Board of Directors of Aflac Incorporated:

We have reviewed the consolidated balance sheet of Aflac Incorporated and subsidiaries as of March 31, 2010, and the related consolidated statements of earnings, shareholders’ equity, cash flows and comprehensive income for the three-month periods ended March 31, 2010 and 2009. These consolidated financial statements are the responsibility of the Company’s management.

We conducted our reviews in accordance with the standards of the Public Company Accounting Oversight Board (United States). A review of interim financial information consists principally of applying analytical procedures and making inquiries of persons responsible for financial and accounting matters. It is substantially less in scope than an audit conducted in accordance with the standards of the Public Company Accounting Oversight Board (United States), the objective of which is the expression of an opinion regarding the financial statements taken as a whole. Accordingly, we do not express such an opinion.

Based on our reviews, we are not aware of any material modifications that should be made to the consolidated financial statements referred to above for them to be in conformity with U.S. generally accepted accounting principles.

We have previously audited, in accordance with the standards of the Public Company Accounting Oversight Board (United States), the accompanying consolidated balance sheet of Aflac Incorporated and subsidiaries as of December 31, 2009, and the related consolidated statements of earnings, shareholders’ equity, cash flows and comprehensive income for the year then ended (not presented herein); and in our report dated February 26, 2010, we expressed an unqualified opinion on those consolidated financial statements. In our opinion, the information set forth in the accompanying consolidated balance sheet as of December 31, 2009, is fairly stated, in all material respects, in relation to the consolidated balance sheet from which it has been derived.

Atlanta, Georgia

May 7, 2010

2

Table of Contents

Aflac Incorporated and Subsidiaries

Consolidated Statements of Earnings

See the accompanying Notes to the Consolidated Financial Statements.

3

Table of Contents

Aflac Incorporated and Subsidiaries

See the accompanying Notes to the Consolidated Financial Statements.

(continued)

4

Table of Contents

Aflac Incorporated and Subsidiaries

Consolidated Balance Sheets (continued)

See the accompanying Notes to the Consolidated Financial Statements.

5

Table of Contents

Aflac Incorporated and Subsidiaries

Consolidated Statements of Shareholders’ Equity

See the accompanying Notes to the Consolidated Financial Statements.

6

Table of Contents

Aflac Incorporated and Subsidiaries

See the accompanying Notes to the Consolidated Financial Statements.

(continued)

7

Table of Contents

Aflac Incorporated and Subsidiaries

Consolidated Statements of Cash Flows (continued)

See the accompanying Notes to the Consolidated Financial Statements.

8

Table of Contents

Aflac Incorporated and Subsidiaries

See the accompanying Notes to the Consolidated Financial Statements.

9

Table of Contents

Aflac Incorporated and Subsidiaries

Notes to the Consolidated Financial Statements

(Interim period data – Unaudited)

1. SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES

Description of Business

Aflac Incorporated (the Parent Company) and its subsidiaries (collectively, the Company) primarily sell supplemental health and life insurance in the United States and Japan. The Company’s insurance business is marketed and administered through American Family Life Assurance Company of Columbus (Aflac), which operates in the United States (Aflac U.S.) and as a branch in Japan (Aflac Japan). Most of Aflac’s policies are individually underwritten and marketed through independent agents. Aflac U.S. markets and administers group products through Continental American Insurance Company (CAIC). Our insurance operations in the United States and our branch in Japan service the two markets for our insurance business. Aflac Japan’s revenues, including realized gains and losses on its investment portfolio, accounted for 74% of the Company’s total revenues in both the three-month periods ended March 31, 2010, and 2009. The percentage of the Company’s total assets attributable to Aflac Japan was 85% at both March 31, 2010, and December 31, 2009.

Basis of Presentation

We prepare our financial statements in accordance with U.S. generally accepted accounting principles (GAAP). These principles are established primarily by the Financial Accounting Standards Board (FASB). In these Notes to the Consolidated Financial Statements, references to GAAP issued by the FASB are derived from the FASB Accounting Standards Codification ^TM (ASC). The preparation of financial statements in conformity with GAAP requires us to make estimates when recording transactions resulting from business operations based on currently available information. The most significant items on our balance sheet that involve a greater degree of accounting estimates and actuarial determinations subject to changes in the future are the valuation of investments, deferred policy acquisition costs, liabilities for future policy benefits and unpaid policy claims, and income taxes. These accounting estimates and actuarial determinations are sensitive to market conditions, investment yields, mortality, morbidity, commission and other acquisition expenses, and terminations by policyholders. As additional information becomes available, or actual amounts are determinable, the recorded estimates will be revised and reflected in operating results. Although some variability is inherent in these estimates, we believe the amounts provided are adequate.

The consolidated financial statements include the accounts of the Parent Company, its subsidiaries and those entities required to be consolidated under applicable accounting standards. All material intercompany accounts and transactions have been eliminated.

In the opinion of management, the accompanying unaudited consolidated financial statements of the Company contain all adjustments, consisting of normal recurring accruals, which are necessary to fairly present the consolidated balance sheets as of March 31, 2010, and December 31, 2009, and the consolidated statements of earnings, shareholders’ equity, cash flows and comprehensive income for the three-month periods ended March 31, 2010, and 2009. Results of operations for interim periods are not necessarily indicative of results for the entire year. As a result, these financial statements should be read in conjunction with the financial statements and notes thereto included in our annual report to shareholders for the year ended December 31, 2009.

Significant Accounting Policies

As a result of accounting guidance adopted subsequent to December 31, 2009, we have updated our accounting policy for investments and derivatives and hedging. All other categories of significant accounting policies remain unchanged from our annual report to shareholders for the year ended December 31, 2009.

10

Table of Contents

Investments: Our debt securities consist of fixed-maturity securities, which are classified as either held to maturity or available for sale. Securities classified as held to maturity are securities that we have the ability and intent to hold to maturity or redemption and are carried at amortized cost. All other fixed-maturity debt securities, our perpetual securities and our equity securities are classified as available for sale and are carried at fair value. If the fair value is higher than the amortized cost for debt and perpetual securities, or the purchase cost for equity securities, the excess is an unrealized gain, and if lower than cost, the difference is an unrealized loss.

The net unrealized gains and losses on securities available for sale, plus the unamortized unrealized gains and losses on debt securities transferred to the held-to-maturity portfolio, less related deferred income taxes, are recorded through other comprehensive income and included in accumulated other comprehensive income.

Amortized cost of debt and perpetual securities is based on our purchase price adjusted for accrual of discount, or amortization of premium and recognition of impairment charges, if any. The amortized cost of debt and perpetual securities we purchase at a discount or premium will equal the face or par value at maturity or the call date, if applicable. Interest is reported as income when earned and is adjusted for amortization of any premium or discount.

We have investments in variable interest entities (VIEs) and qualified special purpose entities (QSPEs). In periods prior to 2010, VIEs were evaluated for consolidation based on the variable interest created by a VIE, and QSPEs were exempt from consolidation. Our investments in VIEs and QSPEs were accounted for as fixed-maturity or perpetual securities. The majority of our investments in VIEs and QSPEs were held in our available-for-sale portfolio.

Subsequent to the adoption of updated accounting guidance on VIEs and QSPEs in 2010, our accounting treatment for these investments changed. The concept of QSPEs was eliminated, and therefore, the former QSPEs are treated as normal VIEs and are evaluated for consolidation. We adopted the new criteria for evaluating VIEs for consolidation, which, instead of focusing on a quantitative approach, focuses on identifying which enterprise has the power to direct the activities of a variable interest entity that most significantly impact the entity’s economic performance and (1) the obligation to absorb losses of the entity or (2) the right to receive benefits from the entity. As a result of the application of this new guidance, we are the primary beneficiary of certain VIEs. While the VIEs generally operate within a defined set of documents, there are certain powers that are retained by us that are considered significant in our conclusion that we are the primary beneficiary. These powers vary by structure but generally include the initial selection of the underlying collateral or, for collateralized debt obligations (CDOs), the reference credits to include in the structure; the ability to obtain the underlying collateral in the event of default; and the ability to appoint or dismiss key parties in the structure. In particular, our powers surrounding the underlying collateral were the most significant powers since those most significantly impact the economics of the VIE. We have no obligation to provide any continuing financial support to any of the entities in which we are the primary beneficiary. Our maximum loss is limited to our original investment. We and any of our creditors have no ability to obtain the underlying collateral, and we have no control over the instruments in the VIEs, unless there is an event of default.

For those entities where we are the primary beneficiary, the assets consolidated are fixed-maturity securities, perpetual securities and derivative instruments. The calculation method of the yields on these investments did not change as a result of adoption of the new accounting guidance.

For the collateralized mortgage obligations (CMOs) held in our fixed-maturity securities portfolio, we recognize income using a constant effective yield, which is based on anticipated prepayments and the estimated economic life of the securities. When estimates of prepayments change, the effective yield is recalculated to reflect actual payments to date and anticipated future payments. The net investment in CMO securities is adjusted to the amount that would have existed had the new effective yield been applied at the time of acquisition. This adjustment is reflected in net investment income.

We use the specific identification method to determine the gain or loss from securities transactions and report the realized gain or loss in the consolidated statements of earnings.

11

Table of Contents

Our credit analysts/research personnel routinely monitor and evaluate the difference between the amortized cost and fair value of our investments. Additionally, credit analysis and/or credit rating issues related to specific investments may trigger more intensive monitoring to determine if a decline in fair value is other than temporary. For investments with a fair value below amortized cost, the process includes evaluating, among other factors, the length of time and the extent to which amortized cost exceeds fair value, the financial condition, operations, credit and liquidity posture, and future prospects of the issuer as well as our intent or need to dispose of the security prior to a recovery of its fair value to amortized cost. This process is not exact and requires consideration of risks such as credit risk, which to a certain extent can be controlled, and interest rate risk, which cannot be controlled. Therefore, if an investment’s amortized cost exceeds its fair value solely due to changes in interest rates, impairment may not be appropriate.

In periods prior to 2009, if, after monitoring and analyses, management believed that a decline in fair value was other than temporary, we adjusted the amortized cost of the security to fair value and reported a realized loss in the consolidated statements of earnings. Subsequent to the adoption of updated accounting guidance on impairments in 2009, our accounting policy changed. If, after monitoring and analyses, management believes that fair value will not recover to amortized cost prior to the disposal of the security, we recognize an other-than-temporary impairment of the security. Once a security is considered to be other-than-temporarily impaired, the impairment loss is separated into two separate components: the portion of the impairment related to credit and the portion of the impairment related to factors other than credit. We automatically recognize a charge to earnings for the credit-related portion of other-than-temporary impairments. Impairments related to factors other than credit are charged to earnings in the event we intend to sell the security prior to the recovery of its amortized cost or if it is more likely than not that we would be required to dispose of the security prior to recovery of its amortized cost; otherwise, non-credit-related other-than-temporary impairments are charged to other comprehensive income.

We lend fixed-maturity securities to financial institutions in short-term security lending transactions. These securities continue to be carried as investment assets on our balance sheet during the terms of the loans and are not reported as sales. We receive cash or other securities as collateral for such loans. For loans involving unrestricted cash collateral, the collateral is reported as an asset with a corresponding liability for the return of the collateral. For loans collateralized by securities, the collateral is not reported as an asset or liability.

For further information regarding our investments, see Note 3.

Derivatives and Hedging: We do not use derivatives for trading purposes, nor do we engage in leveraged derivative transactions.

Freestanding derivative instruments are reported in the consolidated statements of financial position at fair value and are reported in other assets and other liabilities, with changes in value reported in earnings. These freestanding derivatives are interest rate swaps, credit default swaps (CDSs) and/or foreign currency swaps. Interest rate and foreign currency swaps are used within VIEs to hedge the risk arising from interest rate and currency exchange risk, while the CDSs are used to increase the yield and improve the diversification of the portfolio.

From time to time, we purchase certain investments that contain an embedded derivative. We assess whether this embedded derivative is clearly and closely related to the asset that serves as its host contract. If we deem that the embedded derivative’s terms are not clearly and closely related to the host contract, and a separate instrument with the same terms would qualify as a derivative instrument, the derivative is separated from that contract, held at fair value and reported with the host instrument in the consolidated statements of financial position, with changes in fair value reported in earnings.

For those relationships where we seek hedge accounting, we document all relationships between hedging instruments and hedged items, as well as our risk-management objectives for undertaking various hedge transactions. This process includes linking derivatives and nonderivatives that are designated as hedges to specific assets or liabilities on the balance sheet. We also assess, both at inception and on an ongoing basis, whether the derivatives and nonderivatives used in hedging activities are highly effective in offsetting changes in fair values or cash flows of the hedged items. The assessment of hedge effectiveness determines the accounting treatment of noncash changes in fair value.

12

Table of Contents

We have designated certain interest rate swaps as a hedge of the variability of the interest cash flows associated with our variable rate Uridashi notes. Changes in the fair value of these and any of our other derivatives that are designated and qualify as cash flow hedges are recorded in other comprehensive income as long as they are deemed effective. Any hedge ineffectiveness is recorded immediately in current period earnings as net realized investment gains and losses. Periodic derivative net coupon settlements are recorded in the line item of the consolidated statements of operations in which the cash flows of the hedged item are recorded. We include the fair value of these derivatives in either other assets or other liabilities on the balance sheet.

We have designated our yen-denominated Samurai and Uridashi notes and yen-denominated loans (see Note 6) as nonderivative hedges of the foreign currency exposure to our investment in Aflac Japan. At the beginning of each quarter, we make our net investment hedge designation. If the total of our designated yen-denominated liabilities is equal to or less than our net investment in Aflac Japan, the hedge is deemed to be effective and the related exchange effect is reported in the unrealized foreign currency component of other comprehensive income. Should these designated yen-denominated liabilities exceed our investment in Aflac Japan, the foreign exchange effect on the portion of the liabilities that exceeds our investment in Aflac Japan would be recognized in net earnings (other income). Until their expiration in April 2009, we designated our cross-currency swaps as a hedge of the foreign currency exposure of our investment in Aflac Japan. We included the fair value of the cross-currency swaps in either other assets or other liabilities on the balance sheet. We reported the changes in fair value of the foreign currency portion of our cross-currency swaps in other comprehensive income. Changes in the fair value of the interest rate component were reflected in other income in the consolidated statements of earnings.

Reclassifications: Certain reclassifications have been made to prior-year amounts to conform to current-year reporting classifications. These reclassifications had no impact on net earnings or total shareholders’ equity.

New Accounting Pronouncements

Recently Adopted Accounting Pronouncements

Fair value measurements and disclosures: In January 2010, the FASB issued amended accounting guidance on fair value disclosures. This guidance requires new disclosures about transfers in and out of fair value hierarchy Levels 1 and 2. We adopted this guidance as of January 1, 2010. The adoption did not have an impact on our financial position or results of operations.

Accounting for variable interest entities and transfers of financial assets : In June 2009, the FASB issued amended guidance on accounting for VIEs and transfers of financial assets. As discussed above, this guidance defines new criteria for determining the primary beneficiary of a VIE; increases the frequency of required reassessments to determine whether a company is the primary beneficiary of a VIE; eliminates the exemption for the consolidation of QSPEs; establishes conditions for reporting a transfer of a portion of a financial asset as a sale; modifies the financial asset derecognition criteria; and requires additional disclosures. We adopted the provisions of this guidance on January 1, 2010 prospectively. As a result, we were required to consolidate certain of the VIEs with which we are currently involved. We were not required to deconsolidate any VIEs on January 1, 2010.

Upon the initial consolidation of the VIEs on January 1, 2010, the assets, liabilities, and noncontrolling interests of the VIEs were recorded at their carrying values, which is the amounts at which the assets, liabilities, and noncontrolling interests would have been carried in the consolidated financial statements when we first met the conditions to be the primary beneficiary. For any of the VIEs that were required to be consolidated, we also considered whether any of the derivatives in these structures qualified on January 1, 2010, as a cash flow hedge of the changes in cash flows attributable to foreign currency and/or interest rate risk. Certain of the swaps did not qualify for hedge accounting since the swap had a fair value on January 1, 2010. Other swaps did not qualify for hedge accounting since they increased, rather than reduced, cash flow risk. See Note 4 for further discussion.

The impact of consolidating these VIEs as of January 1, 2010, includes three components. The first component is the valuation differences associated with the underlying securities and derivatives included in the VIE structures. Prior to the consolidation of these VIEs, we utilized a pricing model to value our beneficial interests and did not separately consider the fair value of the financial instruments included within the structures. The cumulative impact of these valuation adjustments was recorded in accumulated other comprehensive income or retained earnings depending on whether the valuation adjustment was associated with the underlying debt securities and whether the derivative qualified as a cash flow hedge.

13

Table of Contents

Another portion of the impact of consolidation was related to the currency translation adjustments that were previously recognized for our beneficial interests in the VIEs that were yen-denominated. Since some of the underlying assets in the VIEs are dollar-denominated, the previously recognized currency translation adjustment was reversed.

The final portion primarily relates to the fair value of CDSs included in the CDOs that had been designated as held to maturity. Under U.S. GAAP, these credit default swaps were recorded at fair value as a cumulative effect adjustment through retained earnings. The CDSs are not eligible for hedge accounting.

The following table summarizes the cumulative after-tax consolidation impact of adopting this new accounting guidance on January 1, 2010:

For additional information concerning our investments in VIEs and derivatives, see Notes 3 and 4, respectively.

Accounting Pronouncements Pending Adoption

Fair value measurements and disclosures: In January 2010, the FASB issued amended accounting guidance on fair value disclosures. This guidance requires the activity in fair value hierarchy Level 3 for purchases, sales, issuances, and settlements to be reported on a gross, rather than net, basis. This guidance is effective for interim and annual periods beginning after December 15, 2010. We are in the process of assessing the impact of the adoption of this guidance on our financial position and results of operations.

Accounting for embedded credit derivatives : In March 2010, the FASB issued accounting guidance on embedded credit derivatives. This guidance clarifies the type of embedded credit derivative that is exempt from embedded derivative bifurcation requirements. This guidance is effective for interim periods beginning after June 15, 2010. We are in the process of assessing the impact of the adoption of this guidance on our financial position and results of operations.

Recent accounting guidance not discussed above is not applicable or did not have an impact to our business.

For additional information on new accounting pronouncements and their impact, if any, on our financial position or results of operations, see Note 1 of the Notes to the Consolidated Financial Statements in our annual report to shareholders for the year ended December 31, 2009.

14

Table of Contents

2. BUSINESS SEGMENT INFORMATION

The Company consists of two reportable insurance business segments: Aflac Japan and Aflac U.S., both of which sell supplemental health and life insurance.

Operating business segments that are not individually reportable are included in the “Other business segments” category. We do not allocate corporate overhead expenses to business segments. We evaluate and manage our business segments using a financial performance measure called pretax operating earnings. Our definition of operating earnings excludes the following items from net earnings on an after-tax basis: realized investment gains/losses, the impact from ASC 815 (“Derivatives and Hedging”), and nonrecurring items. We then exclude income taxes related to operations to arrive at pretax operating earnings. Information regarding operations by segment as follows:

15

Table of Contents

16

Table of Contents

3. INVESTMENTS

Investment Holdings

The amortized cost for our investments in debt and perpetual securities, the cost for equity securities and the fair values of these investments are shown in the following tables.

17

Table of Contents

18

Table of Contents

19

Table of Contents

The methods of determining the fair values of our investments in debt securities, perpetual securities and equity securities are described in Note 5.

As discussed in Note 1, we adopted new accounting guidance for VIEs on January 1, 2010, that resulted in the consolidation of most of our investments in CDOs. As a result, these investments are no longer reported as a single investment. In addition, in conjunction with this change in accounting for VIEs, certain VIEs, totaling $309 million at amortized cost as of January 1, 2010, are no longer classified as held to maturity. The underlying collateral for these VIEs is classified as available for sale as of January 1, 2010.

During the first three months of 2010, we did not reclassify any investments from the held-to-maturity portfolio to the available-for-sale portfolio. During the first three months of 2009, we reclassified six investments from the held-to-maturity portfolio to the available-for-sale portfolio as a result of a significant decline in the issuers’ credit worthiness. At the time of transfer, the securities had an aggregate amortized cost of $497 million and an aggregate unrealized loss of $200 million.

20

Table of Contents

Contractual and Economic Maturities

21