Accounting Policies (Policies)

3 Months Ended

Sep. 30, 2012

Accounting Principles

Accounting Principles

In the opinion of management, the accompanying balance sheets and related interim statements of income, comprehensive income, cash flows, and stockholders’ equity include all adjustments, consisting only of normal recurring items, necessary for their fair presentation in conformity with accounting principles generally accepted in the United States of America (“U.S. GAAP”). Interim results are not necessarily indicative of results for a full year. The information included in this Form 10-Q should be read in conjunction with information included in the Microsoft Corporation 2012 Form 10-K filed on July 26, 2012 with the U.S. Securities and Exchange Commission.

Principles of Consolidation

Principles of Consolidation

The financial statements include the accounts of Microsoft Corporation and its subsidiaries. Intercompany transactions and balances have been eliminated. Equity investments through which we exercise significant influence over but do not control the investee and are not the primary beneficiary of the investee’s activities are accounted for using the equity method. Investments through which we are not able to exercise significant influence over the investee and which do not have readily determinable fair values are accounted for under the cost method.

Estimates and Assumptions

Estimates and Assumptions

Preparing financial statements requires management to make estimates and assumptions that affect the reported amounts of assets, liabilities, revenue, and expenses. Examples of estimates include: loss contingencies; product warranties; the fair value of, and/or potential goodwill impairment for, our reporting units; product life cycles; useful lives of our tangible and intangible assets; allowances for doubtful accounts; allowances for product returns; and stock-based compensation forfeiture rates. Examples of assumptions include: the elements comprising a software arrangement, including the distinction between upgrades or enhancements and new products; when technological feasibility is achieved for our products; the potential outcome of future tax consequences of events that have been recognized in our financial statements or tax returns; and determining when investment impairments are other-than-temporary. Actual results and outcomes may differ from management’s estimates and assumptions.

Recasting of Certain Prior Period Information

Recasting of Certain Prior Period Information

We have recast certain prior period amounts to conform to the current period presentation, including the reclassification of accumulated other comprehensive income from retained earnings to a separate component of stockholders’ equity, the reclassification of cost of revenue from operating expenses to a separate line and the addition of a gross profit line in the income statements, and the recasting of segment information for immaterial movements of business activities between segments and changes in cost allocations, with no impact on consolidated net income or cash flows.

Recently Adopted Accounting Guidance

Recently Adopted Accounting Guidance

In September 2011, the Financial Accounting Standards Board (“FASB”) issued guidance on testing goodwill for impairment. The new guidance provides an entity the option to first perform a qualitative assessment to determine whether it is more likely than not that the fair value of a reporting unit is less than its carrying amount. If an entity determines that this is the case, it is required to perform the currently prescribed two-step goodwill impairment test to identify potential goodwill impairment and measure the amount of goodwill impairment loss to be recognized for that reporting unit (if any). If an entity determines that the fair value of a reporting unit is greater than its carrying amount, the two-step goodwill impairment test is not required. We adopted this new guidance beginning July 1, 2012. Adoption of this new guidance did not have a material impact on our financial statements.

In June 2011, the FASB issued guidance on presentation of comprehensive income. The new guidance eliminated the option to report other comprehensive income and its components in the statement of changes in stockholders’ equity. Instead, an entity is required to present either a continuous statement of net income and other comprehensive income or in two separate but consecutive statements. The new guidance also required entities to present reclassification adjustments out of accumulated other comprehensive income by component in both the statement in which net income is presented and the statement in which other comprehensive income is presented. This guidance was amended in December 2011 when the FASB issued guidance which indefinitely defers presentation of reclassification adjustments. We adopted this new amended guidance beginning July 1, 2012. Adoption of this new amended guidance resulted only in changes to presentation of our financial statements.

Recent Accounting Guidance Not Yet Adopted

Recent Accounting Guidance Not Yet Adopted

In December 2011, the FASB issued guidance enhancing disclosure requirements about the nature of an entity’s right to offset and related arrangements associated with its financial instruments and derivative instruments. The new guidance requires the disclosure of the gross amounts subject to rights of set-off, amounts offset in accordance with the accounting standards followed, and the related net exposure. The new guidance will be effective for us beginning July 1, 2013. Other than requiring additional disclosures, we do not anticipate material impacts on our financial statements upon adoption.

Fair Value Measurements (Policy)

We account for certain assets and liabilities at fair value. The hierarchy below lists three levels of fair value based on the extent to which inputs used in measuring fair value are observable in the market. We categorize each of our fair value measurements in one of these three levels based on the lowest level input that is significant to the fair value measurement in its entirety. These levels are:

• Level 1—inputs are based upon unadjusted quoted prices for identical instruments traded in active markets. Our Level 1 non-derivative investments primarily include U.S. treasuries, domestic and international equities, and actively traded mutual funds. Our Level 1 derivative assets and liabilities include those actively traded on exchanges.

• Level 2—inputs are based upon quoted prices for similar instruments in active markets, quoted prices for identical or similar instruments in markets that are not active, and model-based valuation techniques (e.g. the Black-Scholes model) for which all significant inputs are observable in the market or can be corroborated by observable market data for substantially the full term of the assets or liabilities. Where applicable, these models project future cash flows and discount the future amounts to a present value using market-based observable inputs including interest rate curves, foreign exchange rates, and forward and spot prices for currencies and commodities. Our Level 2 non-derivative investments consist primarily of corporate notes and bonds, mortgage-backed securities, agency securities, certificates of deposit, and commercial paper. Our Level 2 derivative assets and liabilities primarily include certain over-the-counter option and swap contracts.

• Level 3—inputs are generally unobservable and typically reflect management’s estimates of assumptions that market participants would use in pricing the asset or liability. The fair values are therefore determined using model-based techniques, including option pricing models and discounted cash flow models. Our Level 3 non-derivative assets primarily comprise investments in certain corporate bonds and goodwill when it is recorded at fair value due to an impairment charge. We value the Level 3 corporate bonds using internally developed valuation models, inputs to which include interest rate curves, credit spreads, stock prices, and volatilities. Our Level 3 derivative assets and liabilities primarily comprise derivatives for foreign equities. In certain cases, market-based observable inputs are not available and we use management judgment to develop assumptions to determine fair value for these derivatives. Unobservable inputs used in all of these models are significant to the fair values of the assets and liabilities.

We measure certain assets, including our cost and equity method investments, at fair value on a nonrecurring basis when they are deemed to be other-than-temporarily impaired. The fair values of these investments are determined based on valuation techniques using the best information available, and may include quoted market prices, market comparables, and discounted cash flow projections. An impairment charge is recorded when the cost of the investment exceeds its fair value and this condition is determined to be other-than-temporary.

Segment Reporting Policy

Reconciling amounts in the tables above and below include adjustments to conform our internal accounting policies to U.S. GAAP and corporate-level activity not specifically attributed to a segment. Significant internal accounting policies that differ from U.S. GAAP relate to revenue recognition, income statement classification, and depreciation.