ASC 718 Stock Comp Expensing: What It Is, How It Works

ASC 718 (Compensation, Stock Compensation) is the US GAAP standard that governs how a company recognizes the cost of equity it grants to employees, directors, and (under current guidance) most nonemployees: stock options, restricted stock, RSUs, and similar awards. The core rule is simple to state and harder to execute: an equity award has a real cost to the company, measured at its fair value on the grant date, and that cost must be recognized as compensation expense over the period the recipient works to earn it, not expensed all at once and not ignored because no cash changes hands.

IFRS 2 (Share-based Payment) is the equivalent international standard. The two are closely aligned on the core expense model (grant-date fair value, service-period attribution) but diverge on specific mechanics, most notably forfeiture and modification treatment, covered below.

Who this applies to

Any company granting stock-based compensation under US GAAP needs an ASC 718 expense, public or private. There is no private-company exemption from the standard itself (private companies do get a small number of accounting-policy elections, such as the practical expedient for estimating the expected term of "plain vanilla" options, and some private companies qualify for delayed effective dates on new standards, but the core recognition requirement applies to every GAAP filer once it grants equity compensation). A company reporting under IFRS applies IFRS 2 instead of ASC 718; a company that reports under both (e.g., preparing US GAAP financials while a non-US parent needs IFRS 2 figures) needs the expense computed under both frameworks, which can diverge on forfeitures and modifications even when the grant-date inputs are identical.

The expense model

1. Measure: grant-date fair value

The starting point is the fair value of the award on the date it's granted, which depends on the award type:

• Options and option-like awards (ISOs, NQSOs, SARs, and option-type awards under other regimes) are valued with an option-pricing model, almost always the Black-Scholes closed form for standard service- and performance-vesting options. Black-Scholes takes six inputs: the current stock price, the exercise price, expected term, risk-free rate, expected volatility, and expected dividend yield. For awards that include a market condition (a vesting trigger tied to stock price or total shareholder return, which Black-Scholes cannot price), a lattice or Monte Carlo model is used instead, because a closed-form model can't capture a path-dependent payoff condition.
• Full-value awards (restricted stock, RSUs, and similar grants with no exercise price) are simpler: fair value is the stock's fair market value (FMV) on the grant date, less any amount the recipient pays for the shares. There's no option-pricing model involved because there's no option, just a value transfer.
• Expected term, an input to Black-Scholes, is often estimated with the SEC's SAB Topic 14 simplified method for "plain vanilla" options: the midpoint between the vesting period and the contractual term, a reasonable proxy when a company lacks enough exercise history to estimate expected term empirically.

For a private company, the stock price input is the common-stock fair market value from the company's most recent IRC §409A valuation (or equivalent appraisal), because private stock has no public trading price to reference directly. The link between a 409A valuation and an ASC 718 expense is direct: the FMV a 409A establishes is the stock-price input the Black-Scholes calculation uses.

2. Attribute: when the expense is recognized

Once an award's total fair value is known, that cost is spread over the requisite service period, the period the recipient must work (or satisfy another vesting condition) to earn it. Two standard attribution methods:

• Straight-line attribution: the simplest and most common choice for awards with only a service condition. The total fair value is recognized evenly over the vesting period, regardless of the vesting schedule's shape (e.g., a 1-year cliff followed by monthly vesting still recognizes expense evenly across the full period). ASC 718-10-35-8 sets a floor on this method: cumulative recognized expense at any date must be at least the grant-date fair value of the portion already vested at that date. A front-loaded vesting schedule (e.g., a large first-year cliff) can make the pure straight-line amount run behind that floor, which requires a catch-up in the period the cliff vests.
• Graded (FIN 28 / ASC 718-10-35-8) attribution: each vesting tranche is treated as its own sub-award and amortized straight-line from grant date to its own vest date. Because earlier tranches amortize over a shorter window, this front-loads recognition compared to straight-line, recognizing more expense earlier in the vesting period for the same total award. Whether a company uses straight-line or graded attribution, and how many tranches a graded schedule uses, is a documented accounting-policy choice, not something the standard mandates.

3. Forfeitures

When an award doesn't vest, either because the holder leaves before a service condition is met, or because a performance or other vesting condition fails, previously recognized expense may need to reverse. The treatment depends on why the award failed to vest, and GAAP and IFRS diverge in a few specific places:

• Service condition not met (the holder leaves before vesting): the unvested portion's expense reverses pro-rata; expense already recognized for the vested portion stays. Same treatment under both frameworks.
• Performance condition fails: cumulative expense recognized to date reverses to zero under both frameworks, because a failed performance condition means the award never should have been considered probable at the level it was measured.
• Performance condition partially achieved (a scaling payout, e.g., 0 to 200% of target): cumulative expense is trued up to the actual achievement level.
• Market condition fails (a stock-price or TSR target isn't hit): expense does not reverse, under either framework. A market condition's outcome is already priced into the grant-date fair value by the option-pricing model, so a miss doesn't change what the award was worth to grant; it's the market's risk, not an accounting estimate that turned out wrong (ASC 718-10-30-14; IFRS 2 ¶21).
• Non-vesting condition failed by the holder's own choice: GAAP has no separate category for this and treats it as an ordinary service failure (pro-rata reversal). IFRS 2 ¶28A instead requires immediate full acceleration of the remaining unrecognized expense, a genuine GAAP/IFRS divergence on the same underlying fact pattern.
• Entity cancels the award (with no replacement award granted): both frameworks accelerate rather than reverse, recognizing the remaining unrecognized cost immediately, because the award holder didn't fail to earn anything; the company chose to take the award away.

Separately, a company estimates a forfeiture rate (an expected percentage of unvested awards that will never vest due to turnover) and can apply it to reduce grant-date fair value before attribution, true-ing it up to actuals as awards actually forfeit or vest.

4. Modifications

A modification is any change to an existing award's terms (extending the exercise window, accelerating vesting, repricing the exercise price, changing a performance target, and similar). US GAAP classifies modifications into a small number of types (commonly referenced as Type I through Type IV: probability-to-improbable, probability-to-probable, and so on) that each drive different incremental-cost math; IFRS 2 asks a related but distinct question, whether the modification is "beneficial" to the holder. Both frameworks compute an incremental fair value, the difference between the award's fair value immediately before and immediately after the modification, and recognize that incremental cost (plus, for some modification types, a cumulative catch-up) going forward. A probability change on a performance condition (e.g., a target going from improbable to probable) is a change in estimate, not a modification, and is accounted for differently; getting that distinction wrong is one of the more common ASC 718 errors in practice.

5. Period close and disclosures

Expense recognition isn't a one-time calculation; it's a recurring, per-period process run every reporting period (typically quarterly) for as long as unvested awards exist: incorporate the period's actual forfeitures and any modifications, true up estimates, and post the period's compensation expense (and associated deferred tax asset movement) as a journal entry.

ASC 718-10-50-2 and IFRS 2 ¶44 to ¶52 then require a specific set of footnote disclosures, commonly presented together in a single stock-based-compensation note in the financial statements (often labeled "Note 10" or similar, though the actual numbering varies by company). At minimum, US GAAP disclosure requires:

• A description of the share-based payment arrangement(s).
• An activity rollforward of options outstanding (granted, exercised, forfeited, expired, outstanding and exercisable at period end), each with weighted-average exercise price, plus the weighted-average remaining contractual term.
• The weighted-average grant-date fair value of awards granted in the period.
• Total intrinsic value of options exercised, outstanding, and exercisable, and the total fair value of awards that vested in the period.
• The valuation assumptions used (aggregated by grant year).
• Total compensation cost recognized, including any amount classified as a liability.
• The tax effect of stock compensation: the related deferred tax asset movement and the realized tax benefit.
• Cash received from option exercises, and cash used to settle equity instruments.
• Unrecognized compensation cost remaining, the weighted-average period over which it will be recognized, and aggregated modification incremental cost.

IFRS 2 requires a closely related but not identical set: a description of each arrangement type, assumptions by grant year, an options rollforward with weighted-average exercise price, the weighted-average share price at exercise, an outstanding-by-exercise-price-range breakdown, and (for companies with any cash-settled or liability-classified awards) the equity-settled versus cash-settled expense split and the total equity-settled expense recognized.

GAAP vs IFRS 2: the practical differences

The two standards share the same core model (grant-date fair value, service-period attribution), which is why companies reporting under both frameworks rarely need two different valuations. Where they diverge in practice:

• Forfeitures: the non-vesting-condition-by-choice treatment differs (see above); IFRS also historically required forfeiture-rate estimation (no accounting-policy election to use actual forfeitures as incurred, the way GAAP permits), though this gap has narrowed under current guidance.
• Modifications: GAAP's Type I to IV classification versus IFRS's beneficial/non-beneficial framing ask related but not identical questions, and can occasionally produce different answers for the same modification.
• Disclosure: the required footnote tables differ in structure and in a few specific required figures (e.g., IFRS's equity-settled/cash-settled split under ¶45(d)).

A spreadsheet can start this. It struggles to keep up with it

A single straight-line schedule for a handful of options is easy to model in a spreadsheet. What is hard to maintain by hand, across dozens or hundreds of grants, several vesting schedules, a rolling set of leavers, the occasional repricing or acceleration, and a quarterly close cadence, is: picking the right fair-value method per award type, applying the ASC 718-10-35-8 vested floor correctly when vesting is front-loaded, applying the right forfeiture treatment per event type and per framework, classifying modifications correctly and distinguishing them from changes in estimate, and keeping the footnote disclosure numbers (rollforwards, intrinsic value, DTA, cash received) tied out to the same underlying grant data every quarter without re-keying figures. Software that computes the expense directly from the same cap table and vesting data the company already maintains, rather than a parallel spreadsheet someone rebuilds every quarter, is the practical answer at any real scale. See how Value8 handles ASC 718 expensing for how that works in Value8's Ledger product.

This is general information about ASC 718 / IFRS 2 and common accounting practice, not accounting or audit advice. Confirm specifics with your accountant or auditor.