Basis of presentation

The accompanying condensed consolidated financial statements include the accounts of The Allstate Corporation (the “Corporation”) and its wholly owned subsidiaries, primarily Allstate Insurance Company (“AIC”), a property and casualty insurance company with various property and casualty and life and investment subsidiaries, including Allstate Life Insurance Company (“ALIC”) (collectively referred to as the “Company” or “Allstate”). These condensed consolidated financial statements have been prepared in conformity with accounting principles generally accepted in the United States of America (“GAAP”).

The condensed consolidated financial statements and notes as of March 31, 2018 and for the three month periods ended March 31, 2018 and 2017 are unaudited. The condensed consolidated financial statements reflect all adjustments (consisting only of normal recurring accruals) which are, in the opinion of management, necessary for the fair presentation of the financial position, results of operations and cash flows for the interim periods. These condensed consolidated financial statements and notes should be read in conjunction with the consolidated financial statements and notes thereto included in the Company’s annual report on Form 10-K for the year ended December 31, 2017 . The results of operations for the interim periods should not be considered indicative of results to be expected for the full year. All significant intercompany accounts and transactions have been eliminated.

Adopted accounting standards

Recognition and Measurement of Financial Assets and Financial Liabilities

Effective January 1, 2018, the Company adopted new Financial Accounting Standards Board (“FASB”) guidance requiring equity investments, including equity securities and limited partnership interests not accounted for under the equity method of accounting or that do not result in consolidation to be measured at fair value with changes in fair value recognized in net income. The guidance clarifies that an entity should evaluate the realizability of deferred tax assets related to available-for-sale fixed income securities in combination with the entity’s other deferred tax assets. The Company’s adoption of the new FASB guidance included adoption of the relevant elements of Technical Corrections and Improvements to Financial Instruments, issued in February 2018.

Upon adoption of the new guidance on January 1, 2018, $1.16 billion of pre-tax unrealized net capital gains for equity securities were reclassified from AOCI to retained income. The after-tax change in accounting for equity securities did not affect the Company’s total shareholders’ equity and the unrealized net capital

gains reclassified to retained income will never be recognized in net income.

Upon adoption of the new guidance on January 1, 2018, the carrying value of cost method limited partnership interests increased $224 million , pre-tax to fair value. The after-tax cumulative-effect increase in retained income of $177 million increased the Company’s shareholders’ equity but will never be recognized in net income thereby negatively impacting calculations of returns on equity.

Revenue from Contracts with Customers

Effective January 1, 2018, the Company adopted new FASB guidance which revises the criteria for revenue recognition. Insurance contracts are excluded from the scope of the new guidance. The Company’s principal activities impacted by the new guidance are those related to the issuance of protection plans for consumer products and automobiles and service contracts that provide roadside assistance. Under the guidance, the transaction price is attributed to underlying performance obligations in the contract and revenue is recognized as the entity satisfies performance obligations and transfers control of a good or service to the customer. Incremental costs of obtaining a contract may be capitalized to the extent the entity expects to recover those costs.

Adoption of the guidance on January 1, 2018 under the modified retrospective approach resulted in the recognition of an immaterial after-tax net cumulative effect increase to the beginning balance of retained income. In addition to the net cumulative effect, the Company also recorded in the statement of financial position an increase of approximately $160 million pre-tax in unearned premiums with a corresponding $160 million pre-tax increase in DAC for protection plans sold directly to retailers for which SquareTrade is deemed to be the principal in the transaction. These impacts offset fully and did not impact retained income at the date of adoption.

Presentation of Net Periodic Pension and Postretirement Benefits Costs

Effective January 1, 2018, the Company adopted new FASB guidance requiring identification, on the statement of operations or in disclosures, the line items in which the components of net periodic pension and postretirement benefits costs are presented. The new guidance permits only the service cost component to be eligible for capitalization where applicable. The adoption had no impact on the Company’s results of operations or financial position.

Goodwill Impairment

In January 2017, the FASB issued guidance to simplify the accounting for goodwill impairment which removes the second step of the goodwill impairment

test that requires a hypothetical purchase price allocation. Under the new guidance, goodwill impairment will be measured and recognized as the amount by which a reporting unit’s carrying value, including goodwill, exceeds its fair value, not to exceed the carrying amount of goodwill allocated to the reporting unit. The revised guidance does not affect a reporting entity’s ability to first assess qualitative factors by reporting unit to determine whether to perform the quantitative goodwill impairment test. The guidance is to be applied on a prospective basis, with the effects, if any, recognized in net income in the period of adoption. The Company elected to early adopt the new guidance as of January 1, 2018. The adoption had no impact on the Company’s results of operations or financial position.

Changes to significant accounting policies

Investments

Changes were made to the Company’s Significant Accounting Policies upon adoption of new FASB guidance related to the recognition and measurement of financial assets. Equity securities primarily include common stocks, exchange traded and mutual funds, non-redeemable preferred stocks and real estate investment trust equity investments. Equity securities are carried at fair value. Equity securities without readily determinable or estimable fair values are measured using the measurement alternative which is cost less impairment, if any, and adjustments resulting from observable price changes in orderly transactions for the identical or similar investment of the same issuer. The periodic change in fair value of equity securities is recognized within realized capital gains and losses on the Condensed Consolidated Statements of Operations effective January 1, 2018.

Investments in limited partnership interests include interests in private equity funds, real estate funds and other funds. Where the Company’s interest is so minor that it exercises virtually no influence over operating and financial policies, investments in limited partnership interests purchased prior to January 1, 2018 are accounted for at fair value primarily utilizing the net asset value as a practical expedient (“NAV”) to determine fair value. All other investments in limited partnership interests, including those purchased subsequent to January 1, 2018, are accounted for in accordance with the equity method of accounting (“EMA”).

Investment income from limited partnership interests carried at fair value is recognized based upon the changes in fair value of the investee’s equity primarily determined using NAV. Income from EMA limited partnership interests is recognized based on the Company’s share of the partnerships’ earnings. Income from EMA limited partnership interests is generally recognized on a three month delay due to the availability of the related financial statements.

Recognition of Revenue

Revenues related to protection plans, other contracts (primarily finance and insurance products) and roadside assistance are deferred and earned over

the term of the contract in a manner that recognizes revenue as obligations under the contracts are performed. Revenues from these products are classified as premiums as the products are backed by insurance. Protection plans and finance and insurance premiums are recognized using a cost-based incurrence method. Roadside assistance premiums are recognized evenly over the term of the contract as performance obligations are fulfilled .

Tax Reform

On December 22, 2017, Public Law 115-97, known as the Tax Cuts and Jobs Act of 2017 (“Tax Legislation”) became effective, permanently reducing the U.S. corporate income tax rate from 35% to 21% beginning January 1, 2018. As a result, the corporate tax rate is not comparable between periods.

Pending accounting standards

Accounting for Leases

In February 2016, the FASB issued guidance revising the accounting for leases. Under the new guidance, lessees will be required to recognize a right-of-use asset and lease liability for all leases other than those that meet the definition of a short-term lease. The lease liability will be equal to the present value of lease payments. A right-of-use asset will be based on the lease liability adjusted for qualifying initial direct costs. Recognition of the lease liability and right-of-use asset will result in an increase in total assets and liabilities in the Condensed Consolidated Statement of Financial Position. The expense of operating leases under the new guidance will be recognized in the income statement on a straight-line basis by adjusting the amortization of the right-of-use asset to produce a straight-line expense when combined with the interest expense on the lease liability. For finance leases, the expense components are computed separately and produce greater up-front expense compared to operating leases as interest expense on the lease liability is higher in early years and the right-of-use asset is amortized on a straight-line basis. Lease classification will be based on criteria similar to those currently applied. The accounting model for lessors will be similar to the current model with modifications to reflect definition changes for components such as initial direct costs. Lessors will continue to classify leases as operating, direct financing, or sales-type. The guidance is effective for reporting periods beginning after December 15, 2018, using a modified retrospective approach applied at the beginning of the earliest period presented. The FASB has exposed for comment an optional simplified transition approach that would allow application of the transition provisions at the effective date instead of the earliest date presented. The Company is in the process of evaluating the impact of adoption, which is not expected to be material to the Company’s results of operations or financial position.

Measurement of Credit Losses on Financial Instruments

In June 2016, the FASB issued guidance which revises the credit loss recognition criteria for certain

financial assets measured at amortized cost, including reinsurance recoverables. The new guidance replaces the existing incurred loss recognition model with an expected loss recognition model. The objective of the expected credit loss model is for the reporting entity to recognize its estimate of expected credit losses for affected financial assets in a valuation allowance deducted from the amortized cost basis of the related financial assets that results in presenting the net carrying value of the financial assets at the amount expected to be collected. The reporting entity must consider all relevant information available when estimating expected credit losses, including details about past events, current conditions, and reasonable and supportable forecasts over the life of an asset. Financial assets may be evaluated individually or on a pooled basis when they share similar risk characteristics. The measurement of credit losses for available-for-sale debt securities measured at fair value is not affected except that credit losses recognized are limited to the amount by which fair value is below amortized cost and the carrying value adjustment is recognized through a valuation allowance and not as a direct write-down. The guidance is effective for reporting periods beginning after December 15, 2019, and for most affected instruments must be adopted using a modified retrospective approach, with a cumulative effect adjustment recorded to beginning retained income. The Company is in the process of evaluating the impact of adoption.

Accounting for Hedging Activities

In August 2017, the FASB issued amendments intended to better align hedge accounting with an organization’s risk management activities. The

amendments expand hedge accounting for nonfinancial and financial risk components and revise the measurement methodologies to better align with an organization’s risk management activities. Separate presentation of hedge ineffectiveness is eliminated to provide greater transparency of the full impact of hedging by requiring presentation of the results of the hedged item and hedging instrument in a single financial statement line item. In addition, the amendments reduce complexity by simplifying the manner in which assessments of hedge effectiveness may be performed. The guidance is effective for reporting periods beginning after December 15, 2018. The presentation and disclosure guidance is effective on a prospective basis. The impact of adoption is not expected to be material to the Company’s results of operations or financial position.

Other revenue presentation

Concurrent with the adoption of new FASB guidance on revenue from contracts with customers and the Company’s objective of providing more information related to revenues for our Services Businesses, the Company revised the presentation of total revenue to include other revenue. Previously, components of other revenue were presented within operating costs and expenses and primarily represent fees collected from policyholders relating to premium installment payments, commissions on sales of non-proprietary products, fee-based services and other revenue transactions. Other revenue is recognized when performance obligations are fulfilled. Prior periods have been reclassified to conform to current separate presentation of other revenue.

Basic earnings per common share is computed using the weighted average number of common shares outstanding, including vested unissued participating restricted stock units. Diluted earnings per common share is computed using the weighted average number

of common and dilutive potential common shares outstanding. For the Company, dilutive potential common shares consist of outstanding stock options and unvested non-participating restricted stock units and contingently issuable performance stock awards.

The effect of dilutive potential common shares does not include the effect of options with an anti-dilutive effect on earnings per common share because their exercise prices exceed the average market price of Allstate common shares during the period or for which the unrecognized compensation cost would have an anti-dilutive effect.

Options to purchase 1.0 million and 2.8 million Allstate common shares, with exercise prices ranging from $86.61 to $102.84 and $67.81 to $81.86 , were outstanding for the three-month periods ended March 31, 2018 and 2017 , respectively, but were not included in the computation of diluted earnings per common share in those periods.

On January 3, 2017, the Company acquired SquareTrade Holding Company, Inc. (“SquareTrade”), a consumer product protection plan provider that distributes through many of America’s major retailers and Europe’s mobile operators, for $1.4 billion in cash. SquareTrade is a provider of consumer electronics and appliance protection plans covering products including TVs, smartphones and computers. This acquisition broadens Allstate’s unique product offerings to better meet consumers’ needs.

In connection with the acquisition, the Company recorded goodwill of $1.10 billion , commissions paid to retailers (reported in deferred policy acquisition costs) of $66 million , other intangible assets (reported in other assets) of $555 million , contractual liability

insurance policy premium expenses (reported in other assets) of $205 million , unearned premiums of $389 million and net deferred income tax liability of $138 million . These amounts reflect re-measurement adjustments to the fair value of the opening balance sheet assets and liabilities.

Of the $555 million assigned to other intangible assets, $465 million is attributable to acquired customer relationships. The $555 million assigned to other intangible assets also included $69 million assigned to the SquareTrade trade name which is considered to have an indefinite useful life. The amortization expense of intangible assets for the three months ended March 31, 2018 and 2017 was $21 million and $23 million , respectively.