⬤ GAAP | Stock-Based Compensation
ASC 718 Explained: A Practical Guide to Expensing Stock Compensation Under U.S. GAAP
Everything U.S. private and public companies need to know about measuring, recognizing, and disclosing share-based payments with worked examples, comparison tables, and the valuation models that drive the numbers.
FASB · TOPIC 718
Stock-Based Compensation Expense
Report
READY
What Is ASC 718?
ASC 718 is the U.S. GAAP standard that tells companies how to put a dollar value on the equity they grant to employees and certain non-employees and then how to spread that expense across the income statement over the period the recipient earns it.
The Financial Accounting Standards Board (FASB) issues U.S. accounting guidance through the Accounting Standards Codification, a topical library where every standard sits under a numbered topic. Topic 718 is the one that deals with compensation paid in stock rather than cash stock options, restricted stock units (RSUs), restricted stock awards, employee stock purchase plans, performance shares, and similar equity instruments.
Plain-English Definition
ASC 718 requires a company to recognize the grant-date fair value of every share-based award as compensation expense, recognized over the period the recipient must work (or perform) to earn it. It applies to public companies, private companies, and even certain non-employee grants.
Before this standard existed (under its predecessor FAS 123R, codified into ASC 718 in 2009), companies could simply disclose stock compensation in a footnote without hitting the income statement. The result was financial statements that looked far healthier than reality especially in tech, where equity is often the single largest form of pay. ASC 718 closed that loophole by demanding that the cost of equity sit on the income statement alongside salaries and wages.
Who falls under ASC 718?
- Public companies – mandatory from the day the standard was issued; SEC filings depend on it.
- Private companies with audited GAAP financials – required the moment an audit, lender covenant, or institutional investor asks for GAAP-compliant statements.
- Pre-revenue startups – technically required, though most defer formal expensing until they raise priced rounds, prepare for an audit, or approach an IPO.
- Companies granting equity to non-employees – consultants, advisors, and contractors; ASC 2018-07 conformed these grants to the employee model.
Why ASC 718 Matters to Founders, CFOs, and Investors
ASC 718 isn’t just an accounting hurdle it shapes how investors read a company, how auditors sign off, and how owners report taxes. Five reasons it sits at the top of the finance team’s checklist:
True Cost Visibility
Equity is real compensation. Without ASC 718, a company that pays its team partly in stock looks artificially profitable. The standard forces the cost into the open.
Audit & IPO Readiness
Auditors will not issue a clean opinion on GAAP financials without proper ASC 718 expensing. The same is true for any S-1 or registration statement.
Investor Diligence
Series A and later investors expect stock-based compensation as a line item. Missing or sloppy 718 records often trigger valuation cuts or hold-back clauses.
Tax Coordination
ASC 718 interacts with ASC 740 (income taxes) on deferred tax assets, excess tax benefits, and the windfall/shortfall mechanics that flow through the P&L.
Comparability
Standardized rules let analysts compare two companies on equal footing critical when stock comp can range from 5% to 40% of total operating expense.
Regulatory Defense
Mis-stated stock comp is a frequent SEC restatement trigger. Getting ASC 718 right is the cheapest insurance against an enforcement action.
The Six Subtopics That Make Up ASC 718
ASC 718 isn’t just an accounting hurdle it shapes how investors read a company, how auditors sign off, and how owners report taxes. Five reasons it sits at the top of the finance team’s checklist:
ASC 718-10
Overall
Equity is real compensation. Without ASC 718, a company that pays its team partly in stock looks artificially profitable. The standard forces the cost into the open.
ASC 718-20
Awards Classified as Equity
Auditors will not issue a clean opinion on GAAP financials without proper ASC 718 expensing. The same is true for any S-1 or registration statement.
ASC 718-30
Awards Classified as Liabilities
Series A and later investors expect stock-based compensation as a line item. Missing or sloppy 718 records often trigger valuation cuts or hold-back clauses.
ASC 718-40
Employee Stock Ownership Plans
ASC 718 interacts with ASC 740 (income taxes) on deferred tax assets, excess tax benefits, and the windfall/shortfall mechanics that flow through the P&L.
ASC 718-50
Employee Share Purchase Plans
Standardized rules let analysts compare two companies on equal footing critical when stock comp can range from 5% to 40% of total operating expense.
ASC 718-740
Income Taxes
Mis-stated stock comp is a frequent SEC restatement trigger. Getting ASC 718 right is the cheapest insurance against an enforcement action.
How ASC 718 Works - A Three-Stage Process
Whether you grant 100 options or 100,000 RSUs, the workflow is the same. Three stages, in this exact order, every time.
Establish Fair Value
For private companies, this starts with a Section 409A valuation of the common stock. The grant-date fair value of the award is then derived using an option-pricing model (Black-Scholes or Lattice).
Recognize the Expense
Total grant-date fair value is allocated across the requisite service period usually the vesting schedule using either the straight-line or graded (FIN 28) attribution method.
Disclose & Reconcile
Expense flows through the P&L; outstanding awards, weighted-average exercise prices, and key assumptions appear in financial-statement footnotes each period.
Recognizing the Expense: Straight-Line vs. Graded Attribution
ASC 718 permits two attribution methods for service-only awards. The choice affects when expense hits the income statement, even though total expense is identical over the life of the awar
The Setup - Hypothetical Numbers
Assume a Tech start up grants 120,000 stock options to a new VP of Engineering on January 1. The award vests in equal annual tranches over four years. The grant-date fair value per option, calculated using Black-Scholes, is $3.00, so the total compensation cost to be recognized is $360,000.
Even Recognition Across the Service Period
Under the straight-line method, the total $360,000 of compensation cost is divided evenly across the four-year service period – $90,000 per year – regardless of how the underlying tranches vest.
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Annual Stock-Comp Expense · Straight-Line
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Method A
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|---|---|---|---|---|---|---|---|---|---|
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Period
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Year 1
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Year 2
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Year 3
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Year 4
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Year 5
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Expense recognized
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$90,000
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$90,000
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$90,000
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$90,000
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$360,000
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% of total cost
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25%
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25%
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25%
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25%
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100%
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Front-Loaded Recognition by Tranche
Under the graded method, each annual tranche is treated as a separate award with its own service period. The first-year tranche vests in one year, the second-year tranche in two, and so on. The result is heavier expense early and lighter expense later.
Step 1: Identify Each Tranche
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Tranche Breakdown · 120,000 options · 4-Year Vest
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Step 1
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Tranche
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Options
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Vesting Period
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Tranche Fair Value
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Tranche 1
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30,000
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1 year
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$90,000
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Tranche 2
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30,000
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2 year
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$90,000
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Tranche 3
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30,000
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3 year
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$90,000
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Tranche 4
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30,000
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4 year
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$90,000
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Total
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120,000
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360,000
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Step 2: Spread Each Tranche Across Its Own Service Period
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Annual Expense by Tranche · Graded Attribution
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Step 2
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Tranche
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Year 1
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Year 2
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Year 3
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Year 4
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Total
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Tranche 1 (1-yr)
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$90,000
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-
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-
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-
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$90,000
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Tranche 2 (2-yr)
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$45,000
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$45,000
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-
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-
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$90,000
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Tranche 3 (3-yr)
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$30,000
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$30,000
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$30,000
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-
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$90,000
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Tranche 4 (4-yr)
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$22,500
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$22,500
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$22,500
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$22,500
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$90,000
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Annual Expense
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$187,500
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$97,500
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$52,500
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$22,500
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$360,000
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Side-by-Side Comparison
Same award, same total cost, two very different P&L shapes:
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Straight-Line vs. Graded · Same $360,000 Award
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Comparison
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Year
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Straight-Line
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Graded (FIN 28)
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Difference
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Year 1
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$90,000
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$187,500
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+$97,500
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Year 2
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$90,000
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$97,500
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+$7,500
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Year 3
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$90,000
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$52,500
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−$37,500
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Year 4
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$90,000
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$22,500
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−$67,500
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Cumulative
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$360,000
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$360,000
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$0
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How the Grant-Date Fair Value Is Calculated
ASC 718 doesn’t prescribe a single formula. It tells you to use an option-pricing model appropriate to the award. In practice, that means one of two models: Black-Scholes or a Lattice (binomial) tree.
The Six Inputs Every Model Needs
Both methods rely on the same family of inputs – the difference is how each handles variability and early exercise.
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Standard Inputs to an ASC 718 Option-Pricing Model
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Inputs
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Inputs
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Symbol
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What IT Captures
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Typical Source
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Stock price
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S
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Fair market value of the underlying share at the grant date
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Most recent 409A valuation
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Exercise (strike) price
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K
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The price the holder pays to acquire each share
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Set at FMV on the grant date
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Expected term
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t
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How long the option is likely to remain outstanding before exercise
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SAB 107/110 simplified method, or historical data
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Volatility
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σ
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Expected variability of the stock price over the term
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Historical volatility of comparable public peers
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Risk-free rate
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r
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Yield on a zero-coupon U.S. Treasury over the expected term
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U.S. Department of the Treasury
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Dividend yield
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q
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Expected dividend payments during the term
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Usually 0% for early-stage private companies
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Black-Scholes vs. Lattice - Which Model Fits?
Closed-Form Solution
Black-Scholes-Merton
- Single formula, single output - fast and easy to audit
- Assumes constant volatility and a single exercise event at expiration
- Cannot handle market conditions or performance hurdles natively
- Best suited to plain-vanilla, service-only options on liquid stock
- Industry default for the majority of private-company option grants
Path-Dependent Model
Lattice / Binomial
- Builds a tree of possible stock prices over time - flexible and dynamic
- Allows volatility, dividends, and interest rates to vary by period
- Models early-exercise behavior, market conditions, and performance targets
- Preferred for executive awards with complex vesting features
- Higher computational cost; requires more documentation in the valuation memo
What a Real Calculation Looks Like
Below is a sample Black-Scholes output for the Nimbus Robotics grant introduced earlier. The model takes the six standard inputs and produces a single per-option fair value.
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Black-Scholes Worksheet · Nimbus Robotics 4-Year Option
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Example
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Assumption
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Value
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Basis
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Stock price (S)
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$8.00
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409A FMV of common stock
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Strike price (K)
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$8.00
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Granted at FMV per IRC §409A
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Expected term (t)
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4 years
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SAB 107 simplified method
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Volatility (σ)
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40%
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Median of 8 public peer companies
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Risk-free rate (r)
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4.05%
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U.S. Treasury 6-year zero-coupon yield
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Dividend yield (q)
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0.00%
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No dividends expected during term
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Fair value per option
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$3
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Black-Scholes-Merton output
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Total grant-date fair value
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$360,000
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120,000 options × $3
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Tax Treatment: ISOs vs. NSOs at a Glance
ASC 718 governs the books, but the IRS governs the taxes. The two systems run in parallel, and the type of option you grant changes both sides of the equation.
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Incentive Stock Options vs. Non-Qualified Stock Options
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TAX Compare
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Attribute
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Incentive Stock Options (ISOs)
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Non-Qualified Stock Options (NSOs)
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Eligible recipients
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Employees only
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Employees, contractors, advisors, non-employee directors
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Strike price (K)
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None
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None (if FMV strike)
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Tax at exercise
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No regular tax; potential AMT preference item
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Ordinary income on spread (FMV − strike)
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Tax at sale
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Long-term cap gains if 2-year/1-year holding tests met
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Capital gain on appreciation above exercise-date FMV
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Employer deduction
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None (unless disqualifying disposition)
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Equal to ordinary income recognized by holder
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$100K annual limit
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Yes — capped at $100K vesting per year
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No statutory cap
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ASC 718 expense impact
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Identical (book treatment is the same for ISO & NSO)
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Identical (book treatment is the same for ISO & NSO)
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Key takeaway: ASC 718 doesn’t distinguish between ISOs and NSOs – book expense is the same for both. The divergence is on the tax side, where NSO exercises generate a deductible expense and ISO exercises generally don’t. ASC 718-740 governs how those tax differences flow into deferred taxes and additional paid-in capital.
The ASC 718 Footnote Checklists
Expensing the award is only half the job. ASC 718 also requires extensive footnote disclosure so that readers understand the assumptions baked into the number.
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What Belongs in the Stock-Based Compensation Footnote
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Checklist
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Disclosure Category
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What to Include
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Frequency
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Plan description
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Type of awards, eligible recipients, total shares authorized and available
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Annual
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Option activity rollforward
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Outstanding, granted, exercised, forfeited, expired — with weighted-average exercise prices
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Annual
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Valuation assumptions
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Volatility, expected term, risk-free rate, dividend yield for each grant year
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Annual
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Total compensation cost
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Recognized in the period and unrecognized cost remaining
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Annual + interim
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Cash-flow effects
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Tax benefits realized from option exercises and RSU vestings
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Annual
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Modifications
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Any award terms changed during the period and the incremental expense impact
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Annual
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Liability awards
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Fair value at period end and remeasurement impact
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Each reporting period
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Common ASC 718 Mistakes We See in Practice
Across audit support and ASC 718 cleanup engagements, the same handful of issues come up again and again. If you spot any of these on your books, it’s worth a closer look.
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Top Compliance Issues & Practical Fixes
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Red Flags
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Mistake
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Why It’s a Problem
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How to Fix It
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Stale 409A valuation
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Strike below FMV creates §409A penalties and triggers ASC 718 remeasurement
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Refresh the 409A every 12 months or after a material event, whichever is sooner
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Missing modification accounting
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Repricing, accelerating, or extending an award without recording incremental expense
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Apply the Type I–IV modification framework on the modification date
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Wrong attribution for graded awards
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Straight-lining a performance-based award understates early-period expense
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Use graded (FIN 28) for performance awards; document the policy election
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Forgetting non-employee grants
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Consultant and advisor grants are scoped into ASC 718 since ASU 2018-07
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Include non-employee awards in the same fair-value framework as employees
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Inconsistent forfeiture policy
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Switching between estimate and actual forfeitures without disclosure
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Pick one method, document it, apply consistently across all awards
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Skipping ESPP look-back valuation
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ESPPs with look-back or discount features are compensatory and must be valued
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Run a Black-Scholes valuation each offering period; expense the discount
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ASC 718 FAQs
Quick answers to the questions we hear most often from founders, CFOs, and audit teams preparing for ASC 718 reviews.
Yes. ASC 718 applies to any U.S. entity that prepares GAAP financial statements and issues share-based payments, regardless of whether the company is public or private. Private companies typically face the standard at the point they begin producing audited financials or raise institutional capital.
No. A 409A valuation establishes the fair market value of common stock for IRS tax purposes and sets the strike price of options. ASC 718 is a financial reporting standard that governs how the resulting compensation expense is measured and recorded under U.S. GAAP. The two work together but answer different questions.
The straight-line method spreads total grant-date fair value evenly across the requisite service period. The graded method treats each vesting tranche as a separate award, which front-loads expense recognition. For service-only awards, ASC 718 permits either method; for performance-based awards, the graded method is generally required.
Companies elect either to estimate forfeitures at the grant date and true up later, or to account for forfeitures as they occur. The election is an accounting policy choice and must be applied consistently. Most early-stage private companies elect the actual-forfeiture method for simplicity.
Black-Scholes is appropriate for plain-vanilla options with no early-exercise behavior or path-dependent features. A Lattice (binomial) model is preferred when the award has performance conditions, market conditions, or material expected early-exercise patterns. The choice should be documented and applied consistently.
Yes. RSUs are scoped into ASC 718 and follow the same grant-date fair value framework. For RSUs, the fair value is simply the stock price at grant (less the present value of any forgone dividends), so no option-pricing model is needed. Attribution still uses straight-line or graded methods.
Get Started
Get ASC 718 right the first time before your audit, your raise, or your IPO clock starts.
Countsure’s valuation and accounting team builds defensible ASC 718 workpapers, Black-Scholes and Lattice valuations, footnote disclosures, and 409A studies in one coordinated engagement. We work with founders, CFOs, and audit firms across the U.S.
