Summary of Significant Accounting Policies (Policies)	12 Months Ended
Mar. 31, 2016
Notes to Financial Statements
Company	*THE COMPANY* 8x8, Inc. ("8x8" or the "Company") was incorporated in California in February 1987 and was reincorporated in Delaware in December 1996. The Company is a provider of cloud-based, enterprise-class software solutions that transform the way businesses communicate and collaborate globally. The Company's comprehensive software platform brings together the power of cloud, mobile, collaboration, video and data science technologies to enhance the way employees communicate with each other, and how they connect and interact with their customers. The Company's integrated, "pure-cloud" offering combines global voice, conferencing, messaging and video with integrated workflows and big data analytics on a single platform to enable increased team productivity, better customer engagement and real-time insights into business performance. Since fiscal 2004, substantially all of our revenue has been generated from the sale, license and provision of communications services. Prior to fiscal 2003, our focus was on our Voice over Internet Protocol semiconductor business.
Fiscal Period	The Company's fiscal year ends on March 31 of each calendar year. Each reference to a fiscal year in these notes to the consolidated financial statements refers to the fiscal year ended March 31 of the calendar year indicated (for example, fiscal 2016 refers to the fiscal year ended March 31, 2016).
Reclassification	Certain amounts previously reported within the Company's consolidated balance sheets and statements of cash flows have been reclassified to conform to the current period presentation. The reclassifications had no impact on the Company's previously reported net income (loss), cash flows, or basic or diluted net income per share amounts.
Principles of Consolidation	*PRINCIPLES OF CONSOLIDATION* The consolidated financial statements include the accounts of 8x8 and its subsidiaries. All material intercompany accounts and transactions have been eliminated.
Use of Estimates	*USE OF ESTIMATES* The preparation of the consolidated financial statements in conformity with accounting principles generally accepted in the United States requires management to make estimates and assumptions that affect the reported amounts of assets, liabilities and equity and disclosure of contingent assets and liabilities at the date of the consolidated financial statements and the reported amounts of revenues and expenses during the reporting period. On an on-going basis, the Company evaluates its estimates, including, but not limited to, those related to bad debts, returns reserve for expected cancellations, valuation of inventories, income and sales tax, and litigation and other contingencies. The Company bases its estimates on historical experience and on various other assumptions that are believed to be reasonable under the circumstances, the results of which form the basis for making judgments about the carrying value of assets and liabilities, and equity that are not readily apparent from other sources. Actual results could differ from those estimates under different assumptions or conditions.
Service Revenue	Service Revenue The Company recognizes service revenue when persuasive evidence of an arrangement exists, delivery has occurred or services have been rendered, price is fixed or determinable and collectability is reasonably assured. The Company defers recognition of service revenues in instances when cash receipts are received before services are delivered and recognizes deferred revenues ratably as services are provided. Under the terms of the Company's typical subscription agreement, new customers can terminate their service within 30 days of order placement and receive a full refund of fees previously paid. The Company has determined that it has sufficient history of subscriber conduct to make a reasonable estimate of cancellations within the 30-day trial period. Therefore, the Company recognizes new subscriber revenue that is fixed or determinable and that are not contingent on future performance or future deliverables in the month in which the new order was shipped, net of an allowance for expected cancellations.
Product Revenue	Product Revenue The Company recognizes revenue from product sales for which there are no related services to be rendered upon shipment to customers provided that persuasive evidence of an arrangement exists, the price is fixed or determinable, title has transferred, collection of resulting receivables is reasonably assured, there are no customer acceptance requirements, and there are no remaining significant obligations. Gross outbound shipping and handling charges are recorded as revenue, and the related costs are included in cost of goods sold. Reserves for returns and allowances for customer sales are recorded at the time of shipment. In accordance with the Financial Accounting Standards Board ("FASB") Accounting Standards Codification ("ASC") 605, Revenue Recognition, the Company records shipments to distributors, retailers, channel partners, and resellers, where the right of return exists, as deferred revenue. The Company defers recognition of revenue on product sales to distributors, retailers, channel partners, and resellers until the products have been sold to the end customer. The Company records revenue net of any sales and service related taxes and mandatory government charges that are billed to its customers. The Company believes this approach results in consolidated financial statements that are more easily understood by users. Under the terms of the Company's typical subscription agreement, new customers can terminate their service within 30 days of order placement and receive a full refund of fees previously paid. The Company has determined that it has sufficient history of subscriber conduct to make a reasonable estimate of cancellations within the 30-day trial period. Therefore, the Company recognizes new subscriber revenue that is fixed or determinable and that are not contingent on future performance or future deliverables in the month in which the new order was shipped, net of an allowance for expected cancellations.
Revenue Recognition for Multiple Element Arrangements	Multiple Element Arrangements ASC 605-25, Revenue Recognition - Multiple Element Arrangements, requires that revenue arrangements with multiple deliverables be divided into separate units of accounting if the deliverables in the arrangement meet specific criteria. The provisioning of the 8x8 cloud service with the accompanying 8x8 IP telephone constitutes a revenue arrangement with multiple deliverables. For arrangements with multiple deliverables, the Company allocates the arrangement consideration to all units of accounting based on their relative selling prices. In such circumstances, the accounting principles establish a hierarchy to determine the relative selling price to be used for allocating arrangement consideration to units of accounting as follows: (i) vendor-specific objective evidence of fair value ("VSOE"), (ii) third-party evidence of selling price ("TPE"), and (iii) best estimate of the selling price ("BESP"). VSOE generally exists only when the Company sells the deliverable separately, on more than a limited basis, at prices within a relatively narrow range. When VSOE cannot be established, the Company attempts to establish the selling price of deliverables based on relevant TPE. TPE is determined based on manufacturer's prices for similar deliverables when sold separately, when possible. When the Company is unable to establish selling price using VSOE or TPE, it uses a BESP for the allocation of arrangement consideration. The objective of BESP is to determine the price at which the Company would transact a sale if the product or service was sold on a stand-alone basis. BESP is generally used for offerings that are not typically sold on a stand-alone basis or for new or highly customized offerings. The Company determines BESP for a product or service by considering multiple factors including, but not limited to: the price list established by its management which is typically based on general pricing practices and targeted gross margin of products and services sold; and analysis of pricing history of new arrangements, including multiple element and stand-alone transactions. In accordance with the guidance of ASC 605-25, when the Company enters into revenue arrangements with multiple deliverables the Company allocates arrangement consideration, including activation fees, among the 8x8 IP telephones and subscriber services based on their relative selling prices. Arrangement consideration allocated to the IP telephones that is fixed or determinable and that is not contingent on future performance or future deliverables is recognized as product revenues during the period of the sale less the allowance for estimated returns during the 30-day trial period. Arrangement consideration allocated to subscriber services that is fixed or determinable and that is not contingent on future performance or future deliverables is recognized ratably as service revenues as the related services are provided, which is generally over the initial contract term.
Deferred Cost of Goods Sold	*DEFERRED COST OF GOODS SOLD* Deferred cost of goods sold represents the cost of products sold for which the end customer or distributor has a right of return. The cost of the products sold is recognized contemporaneously with the recognition of revenue, when the subscriber has accepted the service.
Cash, Cash Equivalents and Investments	*CASH, CASH EQUIVALENTS AND INVESTMENTS* The Company considers all highly liquid investments with an original maturity of three months or less to be cash equivalents. Management determines the appropriate categorization of its investments at the time of purchase and reevaluates the classification at each reporting date. The cost of the Company's investments is determined based upon specific identification. The Company's investments are comprised of mutual funds, commercial paper, corporate debt, municipal securities, asset backed securities, mortgage backed securities, agency bonds, international government securities, certificates of deposit and money market funds. At March 31, 2016 and 2015, all investments were classified as available-for-sale and reported at fair value, based either upon quoted prices in active markets, quoted prices in less active markets, or quoted market prices for similar investments, with unrealized gains and losses, net of related tax, if any, included in other comprehensive income (loss) and disclosed as a separate component of consolidated stockholders' equity. Realized gains and losses on sales of all such investments are reported within the caption of other income, net in the consolidated statements of operations and computed using the specific identification method. The Company classifies its investments as current based on the nature of the investments and their availability for use in current operations. The Company's investments in marketable securities are monitored on a periodic basis for impairment. In the event that the carrying value of an investment exceeds its fair value and the decline in value is determined to be other-than-temporary, an impairment charge is recorded and a new cost basis for the investment is established. These available-for-sale investments are primarily held in the custody of a major financial institution.
ACCOUNTS RECEIVABLE ALLOWANCE	*ACCOUNTS RECEIVABLE ALLOWANCE* The Company estimates the amount of uncollectible accounts receivable at the end of each reporting period based on the aging of the receivable balance, current and historical customer trends, and communications with its customers. Amounts are written off only after considerable collection efforts have been made and the amounts are determined to be uncollectible.
INVENTORY	*INVENTORY* Inventory is stated at the lower of standard cost, which approximates actual cost using the first-in, first-out method, or market. Any write-down of inventory to the lower of cost or market at the close of a fiscal period creates a new cost basis that subsequently would not be marked up based on changes in underlying facts and circumstances. On an on-going basis, the Company evaluates inventory for obsolescence and slow-moving items. This evaluation includes analysis of sales levels, sales projections, and purchases by item, as well as raw material usage related to the Company's manufacturing facilities. If the Company's review indicates a reduction in utility below carrying value, it reduces inventory to a new cost basis. If future demand or market conditions are different than the Company's current estimates, an inventory adjustment may be required, and would be reflected in cost of goods sold in the period the revision is made.
Property and Equipment	*PROPERTY AND EQUIPMENT* Property and equipment are stated at cost less accumulated depreciation and amortization. Depreciation and amortization are computed using the straight-line method. Estimated useful lives of three years are used for equipment and software and five years for furniture and fixtures. Amortization of leasehold improvements is computed using the shorter of the remaining facility lease term or the estimated useful life of the improvements. Maintenance, repairs and ordinary replacements are charged to expense. Expenditures for improvements that extend the physical or economic life of the property are capitalized. Gains or losses on the disposition of property and equipment are recorded in the Consolidated Statements of Operations. Construction in progress primarily relates to costs to acquire or internally develop software for internal use not fully completed as of March 31, 2016.
Accounting for Long-Lived Assets	*ACCOUNTING FOR LONG-LIVED ASSETS* The Company reviews the recoverability of its long-lived assets, such as property and equipment, definite lived intangibles or capitalized software, when events or changes in circumstances occur that indicate that the carrying value of the asset or asset group may not be recoverable. Examples of such events could include a significant disposal of a portion of such assets, an adverse change in the market involving the business employing the related asset or a significant change in the operation or use of an asset. The assessment of possible impairment is based on the Company's ability to recover the carrying value of the asset or asset group from the expected future pre-tax cash flows (undiscounted and without interest charges) of the related operations. If these cash flows are less than the carrying value of such asset, an impairment loss is recognized for the difference between estimated fair value and carrying value. The measurement of impairment requires management to estimate future cash flows and the fair value of long-lived assets. See Note 5 for further discussion on impairment charges incurred as of March 31, 2016.
Goodwill and Other Intangible Assets	*GOODWILL AND OTHER INTANGIBLE ASSETS* Goodwill and intangible assets with indefinite useful lives are not amortized. Goodwill represents the excess fair value of consideration transferred over the fair value of net assets acquired in business combinations. The carrying value of goodwill and indefinite lived intangible assets are not amortized, but are tested annually for impairment and more often if there is an indicator of impairment. The Company has determined that it has two reporting units, and allocates goodwill to the reporting units for the purposes of the annual test for impairment. The Company's annual goodwill impairment test is performed on January 1 each year. No goodwill impairment charges were recorded in the periods presented. Intangible assets with finite useful lives are amortized on a straight-line basis over the periods benefited. Amortization expense for the customer relationship intangible asset is included in sales and marketing expenses. Amortization expense for technology is included in cost of service revenue.
Warranty Expense	*WARRANTY EXPENSE* The Company accrues for estimated product warranty cost upon revenue recognition. Accruals for product warranties are calculated based on the Company's historical warranty experience adjusted for any specific requirements.
Research, Development and Software Costs	*RESEARCH, DEVELOPMENT AND SOFTWARE COSTS* The Company accounts for software to be sold or otherwise marketed in accordance with ASC 985-20, Costs of Software to be Sold, Leased or Marketed (ASC 985-20) which requires capitalization of certain software development costs subsequent to the establishment of technological feasibility. The Company defines establishment of technological feasibility as the completion of a working model. Software development costs for software to be sold or otherwise marketed incurred prior to the establishment of technological feasibility are included in research and development and are expensed as incurred. Software development costs incurred subsequent to the establishment of technological feasibility through the period of general market availability of the product are capitalized, if material. In fiscal 2016 and 2015, the Company capitalized approximately $0 of software development costs in accordance with ASC 985-20. At March 31, 2016 and 2015, total capitalized software development costs included in other long-term assets was approximately $0 and $1.0 million, respectively, and accumulated amortization costs related to capitalized software was approximately $0 million and $0.5 million, respectively. The Company accounts for computer software developed or obtained for internal use in accordance with ASC 350-40, Internal Use Software (ASC 350-40), which requires capitalization of certain software development costs incurred during the application development stage. In fiscal 2016, the Company capitalized $3.4 million in accordance with ASC 350-40, of which $0.8 million is classified as property and equipment and $2.1 million is classified as other long-term assets. In fiscal 2015, the Company capitalized $1.5 million in accordance with ASC 350-40, of which $0.8 million is classified as property and equipment and $0.7 million is classified as other long-term assets. At March 31, 2016, total capitalized software development costs included in property and equipment and other long-term assets was approximately $1.2 and $2.5 million, respectively, and accumulated amortization costs related to capitalized software was approximately $0.2 million and $0, respectively.
Advertising Costs	*ADVERTISING COSTS* Advertising costs are expensed as incurred and were $8.5 million, $6.8 million and $7.3 million for the years ended March 31, 2016, 2015 and 2014, respectively.
Foreign Currency Translation	*FOREIGN CURRENCY TRANSLATION* The Company has determined that the functional currencies of all its foreign subsidiaries are the subsidiary's local currency. The Company believes this most appropriately reflects the current economic facts and circumstances of the Company's subsidiaries operations. The assets and liabilities of the subsidiaries are translated at the applicable exchange rate as of the end of the balance sheet period and revenue and expenses are translated at an average rate over the period presented. Resulting currency translation adjustments are recorded as a component of accumulated other comprehensive income or loss within the stockholder's equity in the consolidated balance sheets.
Business Segments	*BUSINESS SEGMENTS* The Company has two reportable segments, Americas and Europe. The Company's chief operating decision makers, the Chief Executive Officer, Chief Financial Officer, and Chief Technology Officer, evaluate performance of the Company and makes decisions regarding allocation of resources based on geographical results (see Note 12).
Subscriber Acquisition Costs	*SUBSCRIBER ACQUISITION COSTS* Subscriber acquisition costs are expensed as incurred and include the advertising, marketing, promotions, commissions, rebates and equipment subsidy costs associated with the Company's efforts to acquire new subscribers.
Income Taxes	*INCOME TAXES* Income taxes are accounted for using the asset and liability approach. Under the asset and liability approach, a current tax liability or asset is recognized for the estimated taxes payable or refundable on tax returns for the current year. A deferred tax liability or asset is recognized for the estimated future tax effects attributed to temporary differences and carryforwards. If necessary, the deferred tax assets are reduced by the amount of benefits that, based on available evidence, is more likely than not expected to be realized.
Concentrations	*CONCENTRATIONS* Financial instruments that potentially subject the Company to significant concentrations of credit risk consist principally of cash and cash equivalents, investments and trade accounts receivable. The Company has cash equivalents and investment policies that limit the amount of credit exposure to any one financial institution and restrict placement of these funds to financial institutions evaluated as highly credit- worthy. The Company has not experienced any material losses relating to its investment instruments. The Company sells its products to business customers and distributors. The Company performs ongoing credit evaluations of its customers' financial condition and generally does not require collateral from its customers. At March 31, 2016 and 2015, no customer accounted for more than 10% of accounts receivable. The Company purchases all of its hardware products from suppliers that manufacturers the hardware directly. The inability of any supplier to fulfill supply requirements of the Company could materially impact future operating results, financial position or cash flows. If any of these suppliers fail to perform on their obligations to the Company, such failure to fulfill supply requirements of the Company could materially impact future operating results, financial position and cash flows. The Company also relies primarily on third party network service providers to provide telephone numbers and PSTN call termination and origination services for its customers. If these service providers failed to perform their obligations to the Company, such failure could materially impact future operating results, financial position and cash flows.
Fair Values of Financial Instruments	*FAIR VALUE OF FINANCIAL INSTRUMENTS* The Company defines fair value as the price that would be received to sell an asset or paid to transfer a liability in an orderly transaction between market participants at the measurement date. When determining the fair value measurements for assets and liabilities required or permitted to be recorded at fair value, the Company considers the principal market or the most advantageous market in which it would transact. The accounting guidance for fair value measurement requires the Company to maximize the use of observable inputs and minimize the use of unobservable inputs when measuring fair value. Observable inputs are inputs that reflect the assumptions market participants would use in valuing the asset or liability and are developed based on market data obtained from sources independent of the Company. Unobservable inputs are inputs that reflect the Company's assumptions about the factors that market participants would use in valuing the asset or liability developed based on the best information available in the circumstances. The standard establishes a fair value hierarchy based on the level of independent, objective evidence surrounding the inputs used to measure fair value by requiring that the most observable inputs be used when available. A financial instrument's categorization within the fair value hierarchy is based upon the lowest level of input that is significant to the fair value measurement. The fair value hierarchy is as follows: Level 1 applies to assets or liabilities for which there are quoted prices in active markets for identical assets or liabilities that the Company has the ability to access at the measurement date. Level 2 applies to assets or liabilities for which there are inputs other than quoted prices included in Level 1 that are observable for the asset or liability, either directly or indirectly, such as quoted prices for similar assets or liabilities in active markets; quoted prices for identical assets or liabilities in markets with insufficient volume or infrequent transactions (less active markets). Level 3 applies to assets or liabilities for which fair value is derived from valuation techniques in which one or more significant inputs are unobservable, including the Company's own assumptions. The estimated fair value of financial instruments is determined by the Company using available market information and valuation methodologies considered to be appropriate. The carrying amounts of the Company's cash and cash equivalents, accounts receivable and accounts payable approximate their fair values due to their short maturities. The Company's investments are carried at fair value.
Accounting for Stock-Based Compensation	*ACCOUNTING FOR STOCK-BASED COMPENSATION* The Company accounts for its employee stock options, stock purchase rights, restricted stock units and restricted performance stock units granted under the 1996 Stock Plan, 1996 Director Option Plan, the 2006 Stock Plan, the 2003 Contactual Plan, the 2012 Equity Incentive Plan, the 2013 New Employee Inducement Incentive Plan and stock purchase rights under the 1996 Employee Stock Purchase Plan (collectively "Equity Compensation Plans") under the provisions of ASC 718 - Stock Compensation. Under the provisions of ASC 718, stock-based compensation cost is measured at the grant date, based on the estimated fair value of the award, and is recognized as an expense over the employee's requisite service period (generally the vesting period of the equity grant), net of estimated forfeitures. To value option grants, stock purchase rights and restricted stock units under the Equity Compensation Plans for stock-based compensation the Company used the Black-Scholes option valuation model. Fair value determined using the Black-Scholes option valuation model varies based on assumptions used for the expected stock prices volatility, expected life, risk-free interest rates and future dividend payments. For fiscal years 2016, 2015 and 2014, the Company used the historical volatility of its stock over a period equal to the expected life of the options. The expected life assumptions represent the weighted-average period stock-based awards are expecting to remain outstanding. These expected life assumptions were established through the review of historical exercise behavior of stock-based award grants with similar vesting periods. The risk-free interest is based on the closing market bid yields on actively traded U.S. treasury securities in the over-the-counter market for the expected term equal to the expected term of the option. The dividend yield assumption is based on the Company's history and expectation of future dividend payout. Compensation expense for stock-based payment awards is recognized using the straight-line single-option method and includes the impact of estimated forfeitures. The Company issued restricted performance stock units (PSUs) to a group of executives with vesting that is contingent on both market performance and continued service during the fiscal year ended March 31, 2016: These PSUs vest (1) 50% on September 22, 2017 and (2) 50% on September 27, 2018, in each case subject to performance of the Company's common stock relative to the Russell 2000 Index during the period from grant date through such vesting date. A 2x multiplier will be applied to the total shareholder returns (TSR) for each 1% of positive or negative relative TSR, and the number of shares earned will increase or decrease by 2% of the target numbers. In the event 8x8's common stock performance is below negative 30%, relative to the benchmark, no shares will be issued. The Company issued restricted (PSUs) to a group of executives with vesting that is contingent on both market performance and continued service. For the market-based restricted performance stock units issued during the fiscal year ended March 31, 2015: the number of shares of the Company's stock to be received at vesting if applicable service requirements are also met will range from 0% to 100% of the target amount based total shareholder return ("TSR"), which compares the performance of the price per share of the Company's common stock with the NASDAQ Composite Index ("Index") for the three performance periods ending March 31, 2016, March 31, 2017 and March 31, 2018, for the fiscal year ended March 31, 2015; and for the three performance periods ending March 31, 2015, March 31, 2016 and March 31, 2017 for the fiscal year ended March 31, 2014, in the following manner: where in each such measurement period, (1) if the performance return on the price per share of the Company's common stock exceeds the performance return on the NASDAQ Composite Index, (which shall be determined by subtracting the percentage return on the NASDAQ Composite Index from the percentage return on the price per share of the Common Stock), then all of the TSR Performance Shares for such measurement period will be deemed earned and will vest; (2) if the performance return on the price per share of Common Stock is more than 50% lower than the performance return on the NASDAQ Composite Index, then none of the TSR Performance Shares for such measurement period will be deemed earned and will vest; and (3) if the performance return on the price per share of Common Stock is between 0% and 50% lower than the performance return on the NASDAQ Composite Index, then the number of TSR Performance Shares deemed earned and vesting for such measurement period will be reduced by 2% for each 1% by which the performance return on the NASDAQ Composite Index exceeds the performance return on the Common Stock, (4) if the performance return on the price per share of Common Stock is between 0% and 50% higher than the performance return on the NASDAQ Composite Index, then the number of TSR Performance Shares deemed earned and vesting for such measurement period will increase by 2% for each 1% by which the performance return on the Common Stock exceeds the performance return on the NASDAQ Composite Index, and the number of shares of the Company's stock to be received at vesting will range from 0% or 100% of the target amount based on four tranches, with each tranche vesting at the later of (a) the satisfaction of the applicable service-based vesting requirement for that tranche, and (b) on the first date that the average stock price of the Company's common stock for a consecutive 30 trading day period exceeds 150% of the grant date stock price. The minimum service vesting requirement for each tranche is as follows: Tranche 1: One year following the date of the grant Tranche 2: Two years following the date of the grant Tranche 3: Three years following the date of the grant Tranche 4: Four years following the date of the grant Market-based restricted performance stock units are valued using a Monte Carlo simulation model on the date of grant. Fair value determined using the Monte Carlo simulation model varies based on the assumptions used for the expected stock price volatility, the correlation coefficient between the Company and the NASDAQ Composite Index, risk-free interest rates, and future dividend payments. In October 2013, the board of directors approved the modification of unvested stock options to purchase 74,479 shares of common stock and unvested stock purchase rights totaling 37,000 shares of common stock held by the Company's president upon his resignation. The options held by the Company's president upon his resignation, taken as a whole, had a weighted average exercise price of $4.05 per share and range from $2.72 to $5.87 per share, and a weighted average remaining vesting term of 0.5 years. Approximately $1.1 million of the $7.6 million of stock-based compensation charge in fiscal year 2014 applied to the options held by the former president of the Company and was recorded in general and administrative expenses.
Comprehensive Income (Loss)	*COMPREHENSIVE (LOSS) INCOME* Comprehensive income (loss), as defined, includes all changes in equity (net assets) during a period from non-owner sources. The difference between net income (loss) and comprehensive (loss) income is due to foreign currency translation adjustments and unrealized gains or losses on investments classified as available-for-sale.
Net Income (Loss) Per Share	*NET INCOME (LOSS) PER SHARE* Basic net income (loss) per share is computed by dividing net income (loss) available to common stockholders (numerator) by the weighted average number of vested, unrestricted common shares outstanding during the period (denominator). Diluted net income per share is computed on the basis of the weighted average number of shares of common stock plus the effect of dilutive potential common shares outstanding during the period using the treasury stock method. Dilutive potential common shares include outstanding stock options and employee restricted purchase rights.
Deferred Rent	*DEFERRED RENT* In April 2012, the Company entered into an 87-month lease agreement for its new headquarters. Under the terms of the lease agreement: the Company received a three month rent holiday from rental payments; base rent is $130,821 for the 15 months after the rent holiday; and rent expense increases 3% each year thereafter. In the second quarter of fiscal 2013, the Company received a $1.7 million allowance for reimbursement for the cost of tenant improvements that the Company included in cash flows from operating activities. In accordance with the guidance in ASC 840-20, Leases, the Company accounts for its headquarters facility operating lease as follows: Rent Holidays. The Company recognizes the related rent expense on a straight-line basis at the earlier of the first rent payment or the date of possession of the leased property. The difference between the amounts charged to expense and the rent paid is recorded as deferred lease incentives and amortized over the lease term. Rent Escalations. The Company recognizes escalating rent provisions on a straight-line basis over the lease term. The difference between the amounts charged to expense and the rent paid is recorded as deferred lease incentives and amortized over the lease term. Tenant Improvement Allowance. The tenant improvement allowance is deferred and amortized on a straight-line basis over the life of the lease as a reduction to rent expense. In January 2016, the Company entered into a 48-month lease for additional office space near the Company's US headquarters. In April 2016, the lease was amended for actual move in date. Base rent begins at $105,628 and increases 3% each year thereafter. Future minimum annual lease payments under this lease is included in "Leases" in Note 7. At March 31, 2016, total deferred rent included in other accrued liabilities and non-current liabilities was $0.3 million and $1.0 million, respectively. At March 31, 2015, total deferred rent included in other accrued liabilities and non-current liabilities was $0.3 million and $1.3 million, respectively.
Recent Accounting Pronouncements	*RECENT ACCOUNTING PRONOUNCEMENTS* In April 2014, the Financial Accounting Standards Board (FASB) issued Accounting Standards Update (ASU) 2014-08, Presentation of Financial Statements (Topic 205) and Property, Plant, and Equipment (Topic 360): Reporting Discontinued Operations and Disclosures of Disposals of Components of an Entity. This ASU changes the requirements for reporting discontinued operations in FASB ASU 205-20, such that a disposal of a component of an entity or a group of components of an entity is required to be reported in discontinued operations if the disposal represents a strategic shift that has (or will have) a major effect on an entity's operations and financial results. This ASU requires an entity to present, for each comparative period, the assets and liabilities of a disposal group that includes a discontinued operation separately in the asset and liability sections, respectively, of the statement of financial position, as well as additional disclosures about discontinued operations. Additionally, the ASU requires disclosures about a disposal of an individually significant component of an entity that does not qualify for discontinued operations presentation in the financial statements and expands the disclosures about an entity's significant continuing involvement with a discontinued operation. The accounting update is effective for annual periods beginning on or after December 15, 2014. We adopted this pronouncement for our fiscal year beginning April 1, 2015, and there was no effect on our consolidated financial statements. In July 2015, the FASB issued ASU 2015-11, Simplifying the Measurement of Inventory, (Topic 330), which amends the guidelines for the measurement of inventory. Under the amendments, an entity should measure inventory valued using a first-in, first-out or average cost method at the lower of cost and net realizable value. Net realizable value is defined as the estimated selling price in the ordinary course of business, less reasonably predictable costs of completion, disposal, and transportation. This amendment is effective for fiscal years beginning after December 15, 2016, including interim periods within those fiscal years. Early adoption is permitted. The Company is currently assessing the impact of this pronouncement to its consolidated financial statements. In May 2014, the FASB issued ASU No. 2014-09, Revenue from Contracts with Customers, which requires an entity to recognize the amount of revenue to which it expects to be entitled for the transfer of promised goods or services to customers. The ASU will replace most existing revenue recognition guidance in U.S. GAAP when it becomes effective. The new standard will become effective for the Company on April 1, 2018. The standard permits the use of either the retrospective or cumulative effect transition method. The Company has not yet selected a transition method. The Company is currently assessing the impact of this pronouncement to its consolidated financial statements. In September 2015, the FASB issued ASU 2015-16, Business Combinations (Topic 805): Simplifying the Accounting for Measurement-Period Adjustments. Topic 805 requires an acquirer to retrospectively adjust provisional amounts recognized in a business combination during the measurement period. To simplify the accounting for adjustments made to provisional amounts, the amendment requires that the acquirer recognize adjustments to provisional amounts that are identified during the measurement period in the reporting period in which the adjustment amount is determined. The acquirer is required to also record, in the same period's financial statements, the effect on earnings of changes in depreciation, amortization, or other income effects, if any, as a result of the change to the provisional amounts, calculated as if the accounting had been completed at the acquisition date. In addition, an entity is required to present separately on the face of the income statement or disclose in the notes to the financial statements the portion of the amount recorded in current-period earnings by line item that would have been recorded in previous reporting periods if the adjustment to the provisional amounts had been recognized as of the acquisition date. The amendments are effective for fiscal years beginning after December 15, 2015, including interim periods within those fiscal years. The amendments should be applied prospectively to adjustments to provisional amounts that occur after the effective date with earlier application permitted for financial statements that have not been issued. The Company is currently assessing the impact of this pronouncement to its consolidated financial statements. In November 2015, the FASB issued ASU No. 2015-17, Balance Sheet Classification of Deferred Taxes, (Topic 740), which amends the current requirement for organizations to present deferred tax assets and liabilities as current and noncurrent in a classified balance sheet. Under the amendment, an entity will be required to classify all deferred tax assets and liabilities as noncurrent. This amendment is effective for fiscal years beginning after December 15, 2016, including interim periods within those fiscal years. Early adoption is permitted. The Company is currently assessing the impact of this pronouncement to its consolidated financial statements. In February 2016, the FASB issued 2016-02, Leases (Topic 842). Topic 842 requires companies to generally recognize on the balance sheet operating and financing lease liabilities and corresponding right-of-use assets. The update also requires qualitative and quantitative disclosures designed to assess the amount, timing, and uncertainty of cash flows arising from leases. The update requires the use of a modified retrospective transition approach, which includes a number of optional practical expedients that entities may elect to apply. This amendment is effective for fiscal years beginning after December 15, 2018, including interim periods within those fiscal years. Early adoption is permitted. The Company is currently assessing the impact of this pronouncement to its consolidated financial statements. In March 2016, the FASB issued ASU 2016-09, Compensation - Stock Compensation (Topic 718): Improvements to Employee Share-Based Payment Accounting ("ASU 2016-09"), which is intended to simplify several aspects of the accounting for share-based payment transactions, including the income tax consequences, classification of awards as either equity or liabilities, and classification on the statement of cash flows. The amendment is effective for annual periods beginning after December 15, 2016, including interim periods within those fiscal years. Early application is permitted. The Company is currently assessing the impact of this pronouncement to its consolidated financial statements.
Indemnifications	Indemnifications In the normal course of business, the Company may agree to indemnify other parties, including customers, lessors and parties to other transactions with the Company, with respect to certain matters such as breaches of representations or covenants or intellectual property infringement or other claims made by third parties. These agreements may limit the time within which an indemnification claim can be made and the amount of the claim. In addition, the Company has entered into indemnification agreements with its officers and directors. It is not possible to determine the maximum potential amount of the Company's exposure under these indemnification agreements due to the limited history of prior indemnification claims and the unique facts and circumstances involved in each particular agreement. Historically, payments made by the Company under these agreements have not had a material impact on the Company's operating results, financial position or cash flows. Under some of these agreements, however, the Company's potential indemnification liability might not have a contractual limit.

Summary of Significant Accounting Policies (Policies)

12 Months Ended

Mar. 31, 2016

THE COMPANY

8x8, Inc. ("8x8" or the "Company") was incorporated in California in February 1987 and was reincorporated in Delaware in December 1996.

The Company is a provider of cloud-based, enterprise-class software solutions that transform the way businesses communicate and collaborate globally. The Company's comprehensive software platform brings together the power of cloud, mobile, collaboration, video and data science technologies to enhance the way employees communicate with each other, and how they connect and interact with their customers. The Company's integrated, "pure-cloud" offering combines global voice, conferencing, messaging and video with integrated workflows and big data analytics on a single platform to enable increased team productivity, better customer engagement and real-time insights into business performance. Since fiscal 2004, substantially all of our revenue has been generated from the sale, license and provision of communications services. Prior to fiscal 2003, our focus was on our Voice over Internet Protocol semiconductor business.

Fiscal Period

The Company's fiscal year ends on March 31 of each calendar year. Each reference to a fiscal year in these notes to the consolidated financial statements refers to the fiscal year ended March 31 of the calendar year indicated (for example, fiscal 2016 refers to the fiscal year ended March 31, 2016).

Reclassification

Certain amounts previously reported within the Company's consolidated balance sheets and statements of cash flows have been reclassified to conform to the current period presentation. The reclassifications had no impact on the Company's previously reported net income (loss), cash flows, or basic or diluted net income per share amounts.

Principles of Consolidation

PRINCIPLES OF CONSOLIDATION

The consolidated financial statements include the accounts of 8x8 and its subsidiaries. All material intercompany accounts and transactions have been eliminated.

Use of Estimates

USE OF ESTIMATES

The preparation of the consolidated financial statements in conformity with accounting principles generally accepted in the United States requires management to make estimates and assumptions that affect the reported amounts of assets, liabilities and equity and disclosure of contingent assets and liabilities at the date of the consolidated financial statements and the reported amounts of revenues and expenses during the reporting period. On an on-going basis, the Company evaluates its estimates, including, but not limited to, those related to bad debts, returns reserve for expected cancellations, valuation of inventories, income and sales tax, and litigation and other contingencies. The Company bases its estimates on historical experience and on various other assumptions that are believed to be reasonable under the circumstances, the results of which form the basis for making judgments about the carrying value of assets and liabilities, and equity that are not readily apparent from other sources. Actual results could differ from those estimates under different assumptions or conditions.

Service Revenue

Service Revenue

The Company recognizes service revenue when persuasive evidence of an arrangement exists, delivery has occurred or services have been rendered, price is fixed or determinable and collectability is reasonably assured. The Company defers recognition of service revenues in instances when cash receipts are received before services are delivered and recognizes deferred revenues ratably as services are provided.

Under the terms of the Company's typical subscription agreement, new customers can terminate their service within 30 days of order placement and receive a full refund of fees previously paid. The Company has determined that it has sufficient history of subscriber conduct to make a reasonable estimate of cancellations within the 30-day trial period. Therefore, the Company recognizes new subscriber revenue that is fixed or determinable and that are not contingent on future performance or future deliverables in the month in which the new order was shipped, net of an allowance for expected cancellations.

Product Revenue

Product Revenue

The Company recognizes revenue from product sales for which there are no related services to be rendered upon shipment to customers provided that persuasive evidence of an arrangement exists, the price is fixed or determinable, title has transferred, collection of resulting receivables is reasonably assured, there are no customer acceptance requirements, and there are no remaining significant obligations. Gross outbound shipping and handling charges are recorded as revenue, and the related costs are included in cost of goods sold. Reserves for returns and allowances for customer sales are recorded at the time of shipment. In accordance with the Financial Accounting Standards Board ("FASB") Accounting Standards Codification ("ASC") 605, Revenue Recognition, the Company records shipments to distributors, retailers, channel partners, and resellers, where the right of return exists, as deferred revenue. The Company defers recognition of revenue on product sales to distributors, retailers, channel partners, and resellers until the products have been sold to the end customer.

The Company records revenue net of any sales and service related taxes and mandatory government charges that are billed to its customers. The Company believes this approach results in consolidated financial statements that are more easily understood by users.

Revenue Recognition for Multiple Element Arrangements

Multiple Element Arrangements

ASC 605-25, Revenue Recognition - Multiple Element Arrangements, requires that revenue arrangements with multiple deliverables be divided into separate units of accounting if the deliverables in the arrangement meet specific criteria. The provisioning of the 8x8 cloud service with the accompanying 8x8 IP telephone constitutes a revenue arrangement with multiple deliverables. For arrangements with multiple deliverables, the Company allocates the arrangement consideration to all units of accounting based on their relative selling prices. In such circumstances, the accounting principles establish a hierarchy to determine the relative selling price to be used for allocating arrangement consideration to units of accounting as follows: (i) vendor-specific objective evidence of fair value ("VSOE"), (ii) third-party evidence of selling price ("TPE"), and (iii) best estimate of the selling price ("BESP").

VSOE generally exists only when the Company sells the deliverable separately, on more than a limited basis, at prices within a relatively narrow range. When VSOE cannot be established, the Company attempts to establish the selling price of deliverables based on relevant TPE. TPE is determined based on manufacturer's prices for similar deliverables when sold separately, when possible. When the Company is unable to establish selling price using VSOE or TPE, it uses a BESP for the allocation of arrangement consideration. The objective of BESP is to determine the price at which the Company would transact a sale if the product or service was sold on a stand-alone basis. BESP is generally used for offerings that are not typically sold on a stand-alone basis or for new or highly customized offerings. The Company determines BESP for a product or service by considering multiple factors including, but not limited to:

the price list established by its management which is typically based on general pricing practices and targeted gross margin of products and services sold; and
analysis of pricing history of new arrangements, including multiple element and stand-alone transactions.

In accordance with the guidance of ASC 605-25, when the Company enters into revenue arrangements with multiple deliverables the Company allocates arrangement consideration, including activation fees, among the 8x8 IP telephones and subscriber services based on their relative selling prices. Arrangement consideration allocated to the IP telephones that is fixed or determinable and that is not contingent on future performance or future deliverables is recognized as product revenues during the period of the sale less the allowance for estimated returns during the 30-day trial period. Arrangement consideration allocated to subscriber services that is fixed or determinable and that is not contingent on future performance or future deliverables is recognized ratably as service revenues as the related services are provided, which is generally over the initial contract term.

Deferred Cost of Goods Sold

DEFERRED COST OF GOODS SOLD

Deferred cost of goods sold represents the cost of products sold for which the end customer or distributor has a right of return. The cost of the products sold is recognized contemporaneously with the recognition of revenue, when the subscriber has accepted the service.

Cash, Cash Equivalents and Investments

CASH, CASH EQUIVALENTS AND INVESTMENTS

The Company considers all highly liquid investments with an original maturity of three months or less to be cash equivalents. Management determines the appropriate categorization of its investments at the time of purchase and reevaluates the classification at each reporting date. The cost of the Company's investments is determined based upon specific identification.

The Company's investments are comprised of mutual funds, commercial paper, corporate debt, municipal securities, asset backed securities, mortgage backed securities, agency bonds, international government securities, certificates of deposit and money market funds. At March 31, 2016 and 2015, all investments were classified as available-for-sale and reported at fair value, based either upon quoted prices in active markets, quoted prices in less active markets, or quoted market prices for similar investments, with unrealized gains and losses, net of related tax, if any, included in other comprehensive income (loss) and disclosed as a separate component of consolidated stockholders' equity. Realized gains and losses on sales of all such investments are reported within the caption of other income, net in the consolidated statements of operations and computed using the specific identification method. The Company classifies its investments as current based on the nature of the investments and their availability for use in current operations. The Company's investments in marketable securities are monitored on a periodic basis for impairment. In the event that the carrying value of an investment exceeds its fair value and the decline in value is determined to be other-than-temporary, an impairment charge is recorded and a new cost basis for the investment is established. These available-for-sale investments are primarily held in the custody of a major financial institution.

ACCOUNTS RECEIVABLE ALLOWANCE

ACCOUNTS RECEIVABLE ALLOWANCE

The Company estimates the amount of uncollectible accounts receivable at the end of each reporting period based on the aging of the receivable balance, current and historical customer trends, and communications with its customers. Amounts are written off only after considerable collection efforts have been made and the amounts are determined to be uncollectible.

INVENTORY

INVENTORY

Inventory is stated at the lower of standard cost, which approximates actual cost using the first-in, first-out method, or market. Any write-down of inventory to the lower of cost or market at the close of a fiscal period creates a new cost basis that subsequently would not be marked up based on changes in underlying facts and circumstances. On an on-going basis, the Company evaluates inventory for obsolescence and slow-moving items. This evaluation includes analysis of sales levels, sales projections, and purchases by item, as well as raw material usage related to the Company's manufacturing facilities. If the Company's review indicates a reduction in utility below carrying value, it reduces inventory to a new cost basis. If future demand or market conditions are different than the Company's current estimates, an inventory adjustment may be required, and would be reflected in cost of goods sold in the period the revision is made.

Property and Equipment

PROPERTY AND EQUIPMENT

Property and equipment are stated at cost less accumulated depreciation and amortization. Depreciation and amortization are computed using the straight-line method. Estimated useful lives of three years are used for equipment and software and five years for furniture and fixtures. Amortization of leasehold improvements is computed using the shorter of the remaining facility lease term or the estimated useful life of the improvements.

Maintenance, repairs and ordinary replacements are charged to expense. Expenditures for improvements that extend the physical or economic life of the property are capitalized. Gains or losses on the disposition of property and equipment are recorded in the Consolidated Statements of Operations.

Construction in progress primarily relates to costs to acquire or internally develop software for internal use not fully completed as of March 31, 2016.

Accounting for Long-Lived Assets

ACCOUNTING FOR LONG-LIVED ASSETS

The Company reviews the recoverability of its long-lived assets, such as property and equipment, definite lived intangibles or capitalized software, when events or changes in circumstances occur that indicate that the carrying value of the asset or asset group may not be recoverable. Examples of such events could include a significant disposal of a portion of such assets, an adverse change in the market involving the business employing the related asset or a significant change in the operation or use of an asset. The assessment of possible impairment is based on the Company's ability to recover the carrying value of the asset or asset group from the expected future pre-tax cash flows (undiscounted and without interest charges) of the related operations. If these cash flows are less than the carrying value of such asset, an impairment loss is recognized for the difference between estimated fair value and carrying value. The measurement of impairment requires management to estimate future cash flows and the fair value of long-lived assets. See Note 5 for further discussion on impairment charges incurred as of March 31, 2016.

Goodwill and Other Intangible Assets

GOODWILL AND OTHER INTANGIBLE ASSETS

Goodwill and intangible assets with indefinite useful lives are not amortized. Goodwill represents the excess fair value of consideration transferred over the fair value of net assets acquired in business combinations. The carrying value of goodwill and indefinite lived intangible assets are not amortized, but are tested annually for impairment and more often if there is an indicator of impairment. The Company has determined that it has two reporting units, and allocates goodwill to the reporting units for the purposes of the annual test for impairment.

The Company's annual goodwill impairment test is performed on January 1 each year. No goodwill impairment charges were recorded in the periods presented.

Intangible assets with finite useful lives are amortized on a straight-line basis over the periods benefited. Amortization expense for the customer relationship intangible asset is included in sales and marketing expenses. Amortization expense for technology is included in cost of service revenue.

Warranty Expense

WARRANTY EXPENSE

The Company accrues for estimated product warranty cost upon revenue recognition. Accruals for product warranties are calculated based on the Company's historical warranty experience adjusted for any specific requirements.

Research, Development and Software Costs

RESEARCH, DEVELOPMENT AND SOFTWARE COSTS

The Company accounts for software to be sold or otherwise marketed in accordance with ASC 985-20, Costs of Software to be Sold, Leased or Marketed (ASC 985-20) which requires capitalization of certain software development costs subsequent to the establishment of technological feasibility. The Company defines establishment of technological feasibility as the completion of a working model. Software development costs for software to be sold or otherwise marketed incurred prior to the establishment of technological feasibility are included in research and development and are expensed as incurred. Software development costs incurred subsequent to the establishment of technological feasibility through the period of general market availability of the product are capitalized, if material.

In fiscal 2016 and 2015, the Company capitalized approximately $0 of software development costs in accordance with ASC 985-20. At March 31, 2016 and 2015, total capitalized software development costs included in other long-term assets was approximately $0 and $1.0 million, respectively, and accumulated amortization costs related to capitalized software was approximately $0 million and $0.5 million, respectively.

The Company accounts for computer software developed or obtained for internal use in accordance with ASC 350-40, Internal Use Software (ASC 350-40), which requires capitalization of certain software development costs incurred during the application development stage. In fiscal 2016, the Company capitalized $3.4 million in accordance with ASC 350-40, of which $0.8 million is classified as property and equipment and $2.1 million is classified as other long-term assets. In fiscal 2015, the Company capitalized $1.5 million in accordance with ASC 350-40, of which $0.8 million is classified as property and equipment and $0.7 million is classified as other long-term assets. At March 31, 2016, total capitalized software development costs included in property and equipment and other long-term assets was approximately $1.2 and $2.5 million, respectively, and accumulated amortization costs related to capitalized software was approximately $0.2 million and $0, respectively.

Advertising Costs

ADVERTISING COSTS

Advertising costs are expensed as incurred and were $8.5 million, $6.8 million and $7.3 million for the years ended March 31, 2016, 2015 and 2014, respectively.

Foreign Currency Translation

FOREIGN CURRENCY TRANSLATION

The Company has determined that the functional currencies of all its foreign subsidiaries are the subsidiary's local currency. The Company believes this most appropriately reflects the current economic facts and circumstances of the Company's subsidiaries operations. The assets and liabilities of the subsidiaries are translated at the applicable exchange rate as of the end of the balance sheet period and revenue and expenses are translated at an average rate over the period presented. Resulting currency translation adjustments are recorded as a component of accumulated other comprehensive income or loss within the stockholder's equity in the consolidated balance sheets.

Business Segments

BUSINESS SEGMENTS

The Company has two reportable segments, Americas and Europe. The Company's chief operating decision makers, the Chief Executive Officer, Chief Financial Officer, and Chief Technology Officer, evaluate performance of the Company and makes decisions regarding allocation of resources based on geographical results (see Note 12).

Subscriber Acquisition Costs

SUBSCRIBER ACQUISITION COSTS

Subscriber acquisition costs are expensed as incurred and include the advertising, marketing, promotions, commissions, rebates and equipment subsidy costs associated with the Company's efforts to acquire new subscribers.

Income Taxes

INCOME TAXES

Income taxes are accounted for using the asset and liability approach. Under the asset and liability approach, a current tax liability or asset is recognized for the estimated taxes payable or refundable on tax returns for the current year. A deferred tax liability or asset is recognized for the estimated future tax effects attributed to temporary differences and carryforwards. If necessary, the deferred tax assets are reduced by the amount of benefits that, based on available evidence, is more likely than not expected to be realized.

Concentrations

CONCENTRATIONS

Financial instruments that potentially subject the Company to significant concentrations of credit risk consist principally of cash and cash equivalents, investments and trade accounts receivable. The Company has cash equivalents and investment policies that limit the amount of credit exposure to any one financial institution and restrict placement of these funds to financial institutions evaluated as highly credit- worthy. The Company has not experienced any material losses relating to its investment instruments.

The Company sells its products to business customers and distributors. The Company performs ongoing credit evaluations of its customers' financial condition and generally does not require collateral from its customers. At March 31, 2016 and 2015, no customer accounted for more than 10% of accounts receivable.

The Company purchases all of its hardware products from suppliers that manufacturers the hardware directly. The inability of any supplier to fulfill supply requirements of the Company could materially impact future operating results, financial position or cash flows. If any of these suppliers fail to perform on their obligations to the Company, such failure to fulfill supply requirements of the Company could materially impact future operating results, financial position and cash flows.

The Company also relies primarily on third party network service providers to provide telephone numbers and PSTN call termination and origination services for its customers. If these service providers failed to perform their obligations to the Company, such failure could materially impact future operating results, financial position and cash flows.

Fair Values of Financial Instruments

FAIR VALUE OF FINANCIAL INSTRUMENTS

The Company defines fair value as the price that would be received to sell an asset or paid to transfer a liability in an orderly transaction between market participants at the measurement date. When determining the fair value measurements for assets and liabilities required or permitted to be recorded at fair value, the Company considers the principal market or the most advantageous market in which it would transact.

The accounting guidance for fair value measurement requires the Company to maximize the use of observable inputs and minimize the use of unobservable inputs when measuring fair value. Observable inputs are inputs that reflect the assumptions market participants would use in valuing the asset or liability and are developed based on market data obtained from sources independent of the Company. Unobservable inputs are inputs that reflect the Company's assumptions about the factors that market participants would use in valuing the asset or liability developed based on the best information available in the circumstances.

The standard establishes a fair value hierarchy based on the level of independent, objective evidence surrounding the inputs used to measure fair value by requiring that the most observable inputs be used when available. A financial instrument's categorization within the fair value hierarchy is based upon the lowest level of input that is significant to the fair value measurement. The fair value hierarchy is as follows:

Level 1 applies to assets or liabilities for which there are quoted prices in active markets for identical assets or liabilities that the Company has the ability to access at the measurement date.
Level 2 applies to assets or liabilities for which there are inputs other than quoted prices included in Level 1 that are observable for the asset or liability, either directly or indirectly, such as quoted prices for similar assets or liabilities in active markets; quoted prices for identical assets or liabilities in markets with insufficient volume or infrequent transactions (less active markets).
Level 3 applies to assets or liabilities for which fair value is derived from valuation techniques in which one or more significant inputs are unobservable, including the Company's own assumptions.

The estimated fair value of financial instruments is determined by the Company using available market information and valuation methodologies considered to be appropriate. The carrying amounts of the Company's cash and cash equivalents, accounts receivable and accounts payable approximate their fair values due to their short maturities. The Company's investments are carried at fair value.

Accounting for Stock-Based Compensation

ACCOUNTING FOR STOCK-BASED COMPENSATION

The Company accounts for its employee stock options, stock purchase rights, restricted stock units and restricted performance stock units granted under the 1996 Stock Plan, 1996 Director Option Plan, the 2006 Stock Plan, the 2003 Contactual Plan, the 2012 Equity Incentive Plan, the 2013 New Employee Inducement Incentive Plan and stock purchase rights under the 1996 Employee Stock Purchase Plan (collectively "Equity Compensation Plans") under the provisions of ASC 718 - Stock Compensation. Under the provisions of ASC 718, stock-based compensation cost is measured at the grant date, based on the estimated fair value of the award, and is recognized as an expense over the employee's requisite service period (generally the vesting period of the equity grant), net of estimated forfeitures.

To value option grants, stock purchase rights and restricted stock units under the Equity Compensation Plans for stock-based compensation the Company used the Black-Scholes option valuation model. Fair value determined using the Black-Scholes option valuation model varies based on assumptions used for the expected stock prices volatility, expected life, risk-free interest rates and future dividend payments. For fiscal years 2016, 2015 and 2014, the Company used the historical volatility of its stock over a period equal to the expected life of the options. The expected life assumptions represent the weighted-average period stock-based awards are expecting to remain outstanding. These expected life assumptions were established through the review of historical exercise behavior of stock-based award grants with similar vesting periods. The risk-free interest is based on the closing market bid yields on actively traded U.S. treasury securities in the over-the-counter market for the expected term equal to the expected term of the option. The dividend yield assumption is based on the Company's history and expectation of future dividend payout. Compensation expense for stock-based payment awards is recognized using the straight-line single-option method and includes the impact of estimated forfeitures.

The Company issued restricted performance stock units (PSUs) to a group of executives with vesting that is contingent on both market performance and continued service during the fiscal year ended March 31, 2016:

These PSUs vest (1) 50% on September 22, 2017 and (2) 50% on September 27, 2018, in each case subject to performance of the Company's common stock relative to the Russell 2000 Index during the period from grant date through such vesting date. A 2x multiplier will be applied to the total shareholder returns (TSR) for each 1% of positive or negative relative TSR, and the number of shares earned will increase or decrease by 2% of the target numbers. In the event 8x8's common stock performance is below negative 30%, relative to the benchmark, no shares will be issued.

The Company issued restricted (PSUs) to a group of executives with vesting that is contingent on both market performance and continued service. For the market-based restricted performance stock units issued during the fiscal year ended March 31, 2015:

the number of shares of the Company's stock to be received at vesting if applicable service requirements are also met will range from 0% to 100% of the target amount based total shareholder return ("TSR"), which compares the performance of the price per share of the Company's common stock with the NASDAQ Composite Index ("Index") for the three performance periods ending March 31, 2016, March 31, 2017 and March 31, 2018, for the fiscal year ended March 31, 2015; and for the three performance periods ending March 31, 2015, March 31, 2016 and March 31, 2017 for the fiscal year ended March 31, 2014, in the following manner: where in each such measurement period, (1) if the performance return on the price per share of the Company's common stock exceeds the performance return on the NASDAQ Composite Index, (which shall be determined by subtracting the percentage return on the NASDAQ Composite Index from the percentage return on the price per share of the Common Stock), then all of the TSR Performance Shares for such measurement period will be deemed earned and will vest; (2) if the performance return on the price per share of Common Stock is more than 50% lower than the performance return on the NASDAQ Composite Index, then none of the TSR Performance Shares for such measurement period will be deemed earned and will vest; and (3) if the performance return on the price per share of Common Stock is between 0% and 50% lower than the performance return on the NASDAQ Composite Index, then the number of TSR Performance Shares deemed earned and vesting for such measurement period will be reduced by 2% for each 1% by which the performance return on the NASDAQ Composite Index exceeds the performance return on the Common Stock, (4) if the performance return on the price per share of Common Stock is between 0% and 50% higher than the performance return on the NASDAQ Composite Index, then the number of TSR Performance Shares deemed earned and vesting for such measurement period will increase by 2% for each 1% by which the performance return on the Common Stock exceeds the performance return on the NASDAQ Composite Index, and
the number of shares of the Company's stock to be received at vesting will range from 0% or 100% of the target amount based on four tranches, with each tranche vesting at the later of (a) the satisfaction of the applicable service-based vesting requirement for that tranche, and (b) on the first date that the average stock price of the Company's common stock for a consecutive 30 trading day period exceeds 150% of the grant date stock price. The minimum service vesting requirement for each tranche is as follows:

Tranche 1: One year following the date of the grant

Tranche 2: Two years following the date of the grant

Tranche 3: Three years following the date of the grant

Tranche 4: Four years following the date of the grant

Market-based restricted performance stock units are valued using a Monte Carlo simulation model on the date of grant. Fair value determined using the Monte Carlo simulation model varies based on the assumptions used for the expected stock price volatility, the correlation coefficient between the Company and the NASDAQ Composite Index, risk-free interest rates, and future dividend payments.

In October 2013, the board of directors approved the modification of unvested stock options to purchase 74,479 shares of common stock and unvested stock purchase rights totaling 37,000 shares of common stock held by the Company's president upon his resignation. The options held by the Company's president upon his resignation, taken as a whole, had a weighted average exercise price of $4.05 per share and range from $2.72 to $5.87 per share, and a weighted average remaining vesting term of 0.5 years. Approximately $1.1 million of the $7.6 million of stock-based compensation charge in fiscal year 2014 applied to the options held by the former president of the Company and was recorded in general and administrative expenses.

Comprehensive Income (Loss)

COMPREHENSIVE (LOSS) INCOME

Comprehensive income (loss), as defined, includes all changes in equity (net assets) during a period from non-owner sources. The difference between net income (loss) and comprehensive (loss) income is due to foreign currency translation adjustments and unrealized gains or losses on investments classified as available-for-sale.

Net Income (Loss) Per Share

NET INCOME (LOSS) PER SHARE

Basic net income (loss) per share is computed by dividing net income (loss) available to common stockholders (numerator) by the weighted average number of vested, unrestricted common shares outstanding during the period (denominator). Diluted net income per share is computed on the basis of the weighted average number of shares of common stock plus the effect of dilutive potential common shares outstanding during the period using the treasury stock method. Dilutive potential common shares include outstanding stock options and employee restricted purchase rights.

Deferred Rent

DEFERRED RENT

In April 2012, the Company entered into an 87-month lease agreement for its new headquarters. Under the terms of the lease agreement:

the Company received a three month rent holiday from rental payments;
base rent is $130,821 for the 15 months after the rent holiday; and
rent expense increases 3% each year thereafter.

In the second quarter of fiscal 2013, the Company received a $1.7 million allowance for reimbursement for the cost of tenant improvements that the Company included in cash flows from operating activities. In accordance with the guidance in ASC 840-20, Leases, the Company accounts for its headquarters facility operating lease as follows:

Rent Holidays. The Company recognizes the related rent expense on a straight-line basis at the earlier of the first rent payment or the date of possession of the leased property. The difference between the amounts charged to expense and the rent paid is recorded as deferred lease incentives and amortized over the lease term.

Rent Escalations. The Company recognizes escalating rent provisions on a straight-line basis over the lease term. The difference between the amounts charged to expense and the rent paid is recorded as deferred lease incentives and amortized over the lease term.

Tenant Improvement Allowance. The tenant improvement allowance is deferred and amortized on a straight-line basis over the life of the lease as a reduction to rent expense.

In January 2016, the Company entered into a 48-month lease for additional office space near the Company's US headquarters. In April 2016, the lease was amended for actual move in date. Base rent begins at $105,628 and increases 3% each year thereafter. Future minimum annual lease payments under this lease is included in "Leases" in Note 7.

At March 31, 2016, total deferred rent included in other accrued liabilities and non-current liabilities was $0.3 million and $1.0 million, respectively. At March 31, 2015, total deferred rent included in other accrued liabilities and non-current liabilities was $0.3 million and $1.3 million, respectively.

Recent Accounting Pronouncements

RECENT ACCOUNTING PRONOUNCEMENTS

In April 2014, the Financial Accounting Standards Board (FASB) issued Accounting Standards Update (ASU) 2014-08, Presentation of Financial Statements (Topic 205) and Property, Plant, and Equipment (Topic 360): Reporting Discontinued Operations and Disclosures of Disposals of Components of an Entity. This ASU changes the requirements for reporting discontinued operations in FASB ASU 205-20, such that a disposal of a component of an entity or a group of components of an entity is required to be reported in discontinued operations if the disposal represents a strategic shift that has (or will have) a major effect on an entity's operations and financial results. This ASU requires an entity to present, for each comparative period, the assets and liabilities of a disposal group that includes a discontinued operation separately in the asset and liability sections, respectively, of the statement of financial position, as well as additional disclosures about discontinued operations. Additionally, the ASU requires disclosures about a disposal of an individually significant component of an entity that does not qualify for discontinued operations presentation in the financial statements and expands the disclosures about an entity's significant continuing involvement with a discontinued operation. The accounting update is effective for annual periods beginning on or after December 15, 2014. We adopted this pronouncement for our fiscal year beginning April 1, 2015, and there was no effect on our consolidated financial statements.

In July 2015, the FASB issued ASU 2015-11, Simplifying the Measurement of Inventory, (Topic 330), which amends the guidelines for the measurement of inventory. Under the amendments, an entity should measure inventory valued using a first-in, first-out or average cost method at the lower of cost and net realizable value. Net realizable value is defined as the estimated selling price in the ordinary course of business, less reasonably predictable costs of completion, disposal, and transportation. This amendment is effective for fiscal years beginning after December 15, 2016, including interim periods within those fiscal years. Early adoption is permitted. The Company is currently assessing the impact of this pronouncement to its consolidated financial statements.

In May 2014, the FASB issued ASU No. 2014-09, Revenue from Contracts with Customers, which requires an entity to recognize the amount of revenue to which it expects to be entitled for the transfer of promised goods or services to customers. The ASU will replace most existing revenue recognition guidance in U.S. GAAP when it becomes effective. The new standard will become effective for the Company on April 1, 2018. The standard permits the use of either the retrospective or cumulative effect transition method. The Company has not yet selected a transition method. The Company is currently assessing the impact of this pronouncement to its consolidated financial statements.

In September 2015, the FASB issued ASU 2015-16, Business Combinations (Topic 805): Simplifying the Accounting for Measurement-Period Adjustments. Topic 805 requires an acquirer to retrospectively adjust provisional amounts recognized in a business combination during the measurement period. To simplify the accounting for adjustments made to provisional amounts, the amendment requires that the acquirer recognize adjustments to provisional amounts that are identified during the measurement period in the reporting period in which the adjustment amount is determined. The acquirer is required to also record, in the same period's financial statements, the effect on earnings of changes in depreciation, amortization, or other income effects, if any, as a result of the change to the provisional amounts, calculated as if the accounting had been completed at the acquisition date. In addition, an entity is required to present separately on the face of the income statement or disclose in the notes to the financial statements the portion of the amount recorded in current-period earnings by line item that would have been recorded in previous reporting periods if the adjustment to the provisional amounts had been recognized as of the acquisition date.

The amendments are effective for fiscal years beginning after December 15, 2015, including interim periods within those fiscal years. The amendments should be applied prospectively to adjustments to provisional amounts that occur after the effective date with earlier application permitted for financial statements that have not been issued. The Company is currently assessing the impact of this pronouncement to its consolidated financial statements.

In November 2015, the FASB issued ASU No. 2015-17, Balance Sheet Classification of Deferred Taxes, (Topic 740), which amends the current requirement for organizations to present deferred tax assets and liabilities as current and noncurrent in a classified balance sheet. Under the amendment, an entity will be required to classify all deferred tax assets and liabilities as noncurrent.

This amendment is effective for fiscal years beginning after December 15, 2016, including interim periods within those fiscal years. Early adoption is permitted. The Company is currently assessing the impact of this pronouncement to its consolidated financial statements.

In February 2016, the FASB issued 2016-02, Leases (Topic 842). Topic 842 requires companies to generally recognize on the balance sheet operating and financing lease liabilities and corresponding right-of-use assets. The update also requires qualitative and quantitative disclosures designed to assess the amount, timing, and uncertainty of cash flows arising from leases. The update requires the use of a modified retrospective transition approach, which includes a number of optional practical expedients that entities may elect to apply.

This amendment is effective for fiscal years beginning after December 15, 2018, including interim periods within those fiscal years. Early adoption is permitted. The Company is currently assessing the impact of this pronouncement to its consolidated financial statements.

In March 2016, the FASB issued ASU 2016-09, Compensation - Stock Compensation (Topic 718): Improvements to Employee Share-Based Payment Accounting ("ASU 2016-09"), which is intended to simplify several aspects of the accounting for share-based payment transactions, including the income tax consequences, classification of awards as either equity or liabilities, and classification on the statement of cash flows.

The amendment is effective for annual periods beginning after December 15, 2016, including interim periods within those fiscal years. Early application is permitted. The Company is currently assessing the impact of this pronouncement to its consolidated financial statements.

Indemnifications

Indemnifications

In the normal course of business, the Company may agree to indemnify other parties, including customers, lessors and parties to other transactions with the Company, with respect to certain matters such as breaches of representations or covenants or intellectual property infringement or other claims made by third parties. These agreements may limit the time within which an indemnification claim can be made and the amount of the claim. In addition, the Company has entered into indemnification agreements with its officers and directors.

It is not possible to determine the maximum potential amount of the Company's exposure under these indemnification agreements due to the limited history of prior indemnification claims and the unique facts and circumstances involved in each particular agreement. Historically, payments made by the Company under these agreements have not had a material impact on the Company's operating results, financial position or cash flows. Under some of these agreements, however, the Company's potential indemnification liability might not have a contractual limit.