Equity · Tax and compliance

ASC 718: how stock compensation becomes an expense with no cash

Grant-date fair value, the requisite service period, the forfeiture policy election, and why share-based compensation hits the income statement without touching the bank balance.

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In short

What is ASC 718?

ASC 718 is the FASB codification topic governing share-based compensation. It requires a company to measure equity-classified awards at their grant-date fair value and recognise that amount as compensation cost over the period the recipient has to work to earn them. The offsetting credit is to equity, so no cash leaves the business.

FASB ASC Topic 718 · Compensation—Stock Compensation

The problem ASC 718 exists to solve

A company that pays someone in options has paid them. The recipient works for a period and receives something with economic value in exchange. If the financial statements ignored that because no cash moved, two companies doing identical work with identical headcount would report different operating costs purely because one paid in equity.

ASC 718 closes that gap. Share-based payment is compensation, so it goes through the income statement as compensation cost. The credit side goes to equity rather than to cash, which is why share-based compensation shows up as an add-back in the operating section of a cash flow statement prepared using the indirect method.

Grant-date fair value

The measurement date for an equity-classified award is the grant date, and FASB describes the grant date as the date at which the grantor and the grantee reach a mutual understanding of the key terms and conditions of the award. That definition matters in practice: an award the board discussed but never approved, or one where the recipient has not been told the strike price, may not have a grant date yet.

Fair value is not the intrinsic value of the option. An option to buy a share at its current fair market value has zero intrinsic value on day one and considerable fair value, because it carries the right to buy at a fixed price for years. Companies measure that with an option-pricing model — commonly Black-Scholes-Merton, sometimes a lattice model for awards whose terms make a closed-form solution inappropriate.

Inputs to an equity-classified option fair value, and where each comes from
InputWhat it representsWhere a private company gets it
Price of the underlying shareWhat one share is worth at the grant dateThe board’s fair market value determination, typically supported by a 409A valuation
Exercise priceWhat the holder must pay to buy a shareThe grant terms
Expected termHow long the option is expected to remain outstanding before exercise or expiryEstimated from plan terms and behaviour; nonpublic entities have a practical expedient available
Expected volatilityHow much the share price is expected to moveUsually derived from a peer group of comparable public companies
Risk-free rateThe return on a riskless instrument over the expected termGovernment securities yields for a matching term
Expected dividendsDistributions expected over the term, which reduce option valueUsually nil for a company that does not pay dividends

Structural summary of the inputs an option-pricing model requires under Topic 718. The output depends entirely on the inputs; no figure is asserted here.

Two of these inputs are where private-company accounting gets awkward. There is no observable share price, so the fair market value determination that supports the strike price also feeds the expense — which is one reason 409A valuations and ASC 718 expense are usually done by the same people. And there is no observable volatility, so it is inferred from public comparables chosen by the preparer.

FASB has added practical expedients for nonpublic entities in this area, including one in ASU 2021-07 addressing how a nonpublic entity determines the current price input for equity-classified awards. Whether a particular expedient is available and elected is an accounting policy question for the company’s auditors.

The expensing period

Grant-date fair value is computed once, then recognised as cost over the requisite service period — the period the recipient must work to earn the award. For a standard option vesting monthly over four years with a one-year cliff, that is four years of expense from a single measurement.

This is why share-based compensation expense in any given year is not a measure of grants made that year. It is the accumulation of every unvested award still running, from grants made across several previous years. A company that granted heavily two years ago and stopped granting entirely will still report substantial expense today.

Forfeitures

Most equity grants in a startup are never earned in full. People leave, and unvested awards lapse. Under Topic 718 the effect of forfeitures is taken into account by recognising compensation cost only for instruments for which the requisite service has been rendered; no cost is ultimately recognised for instruments forfeited because a service or performance condition was not satisfied.

ASU 2016-09 gave companies a choice about how to get there. An entity may make an entity-wide accounting policy election either to estimate the number of awards expected to vest and true that estimate up to actual experience, or to account for forfeitures as they occur. Whichever is chosen has to be disclosed as an accounting policy and applied consistently.

The two permitted approaches to forfeitures under ASU 2016-09
Estimate forfeituresAccount for forfeitures as they occur
How expense is recognisedReduced up front by an expected forfeiture rate, then trued upRecognised in full, then reversed when an award is actually forfeited
Smoothness of the expense lineSmoother, if the estimate is goodLumpier — reversals land in the period the departure happens
Estimation burdenRequires a supportable forfeiture rate and periodic true-upNone; driven by actual events
SuitsLarger populations where historical turnover is a usable predictorSmall headcounts where one departure would swamp any estimate
DisclosureDisclosed as an accounting policyDisclosed as an accounting policy

Both are permitted for awards with service conditions under FASB ASU 2016-09. The election is entity-wide, not per grant.

Market conditions behave differently and are a frequent source of error. Where an award’s vesting depends on a market condition, the condition is reflected in the grant-date fair value itself, and failing to meet it does not reverse expense that has already been recognised for a recipient who provided the required service.

Book expense is not the tax deduction

ASC 718 is accounting. The corporate tax deduction for the same award is a separate calculation under the Internal Revenue Code, and the two deliberately do not track each other. For incentive stock options, section 421(a)(2) denies the employer a deduction under section 162 with respect to a qualifying transfer of the shares. If the holder makes a disqualifying disposition, section 421(b) allows the employer deduction but places it in the taxable year in which the disposition occurred.

So a company can recognise years of ASC 718 expense for an ISO grant and never take a tax deduction for it, or take one abruptly in a later year because someone sold early. ASU 2016-09 also changed where the difference lands, requiring excess tax benefits and deficiencies to be recognised in the income statement rather than in additional paid-in capital. The result is a book-tax difference that is normal, expected, and needs to be tracked rather than reconciled away.

What this means operationally

ASC 718 expense is computed from grant-level data: grant date, recipient, share count, exercise price, vesting schedule, and the fair market value determination in force at grant. If the equity records are approximate, so is the expense — and it is an audited number. The commonest cause of an ASC 718 problem at audit is not a modelling error but a cap table where grant dates and board approval dates disagree.

Awards to contractors and advisers are in scope too. ASU 2018-07 aligned the accounting for most nonemployee share-based payment awards with the employee model, requiring grant-date fair value measurement, which removed the old remeasurement treatment that made adviser grants unpredictable to report.

Frequently asked questions

What is ASC 718 in simple terms?
It is the US GAAP standard for share-based compensation. Equity-classified awards are measured once at their grant-date fair value, and that amount is recognised as compensation cost across the period the recipient has to work to earn the award. The offsetting entry is to equity, so the expense is non-cash.
Is stock-based compensation a real expense?
Under US GAAP it is compensation cost and reduces reported operating income. It does not reduce cash, which is why it is added back on the cash flow statement. The economic cost falls on existing shareholders through dilution rather than on the company’s bank balance.
Over what period is stock compensation expense recognised?
Over the requisite service period, which is normally the vesting period of the award. A grant vesting over four years produces expense across four years from a single grant-date measurement, so the expense reported in one year reflects grants made over several previous years.
How are forfeitures handled under ASC 718?
Compensation cost is ultimately recognised only for awards whose service or performance condition is satisfied. ASU 2016-09 permits an entity-wide accounting policy election to either estimate expected forfeitures and true them up, or to account for forfeitures as they occur. The choice is disclosed as an accounting policy.
Does ASC 718 apply to options granted to contractors?
Generally yes. ASU 2018-07 brought most nonemployee share-based payment awards into Topic 718 and requires them to be measured at grant-date fair value, aligning them with the employee model.
Does the ASC 718 expense equal the company’s tax deduction?
No, and it is not meant to. For incentive stock options section 421(a)(2) denies the employer a deduction on a qualifying transfer, while section 421(b) allows one in the year of a disqualifying disposition. Book expense and tax deduction are computed on different bases and land in different periods.

Sources

External links open in a new tab.

  1. FASB Accounting Standards Codification, Topic 718, Compensation—Stock CompensationFinancial Accounting Standards BoardThe codification itself is accessed through FASB’s Codification service; the topic number is cited here for reference.Checked 11 Aug 2026
  2. ASU 2016-09, Compensation—Stock Compensation (Topic 718): Improvements to Employee Share-Based Payment AccountingFinancial Accounting Standards BoardIntroduced the entity-wide forfeiture accounting policy election and moved excess tax benefits into the income statement.Checked 11 Aug 2026
  3. ASU 2018-07, Compensation—Stock Compensation (Topic 718): Improvements to Nonemployee Share-Based Payment AccountingFinancial Accounting Standards BoardRequires most nonemployee awards to be measured at grant-date fair value.Checked 11 Aug 2026
  4. 26 U.S. Code §421 — General rulesCornell Legal Information InstituteSubsection (a)(2) denies the employer a §162 deduction on a qualifying transfer; subsection (b) times the deduction on a disqualifying disposition.Checked 11 Aug 2026

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Glide · Equity

ASC 718: how stock compensation becomes an expense with no cash

Grant-date fair value, the requisite service period, the forfeiture policy election, and why share-based compensation hits the income statement without touching the bank balance.

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