Financial Reporting
ASC 718 for Startups: How to Expense Stock Options (and Why It Starts With Your 409A)
ASC 718 makes startups expense stock options as a non-cash cost. Here's how grant-date fair value works, and why your 409A is the input it starts from.
By 409.AI Team - 2026-07-13
# ASC 718 for Startups: How to Expense Stock Options (and Why It Starts With Your 409A)
Most founders meet ASC 718 the same way: an auditor asks for the "stock comp expense schedule," and nobody on the team knows what that is. The options were granted years ago. Nobody paid cash. So why is there an expense at all?
That question sits at the center of ASC 718, the U.S. GAAP standard for stock-based compensation. It's also where a lot of otherwise well-run startups trip up right before a fundraise or an audit. The good news is that the mechanics are learnable, the numbers are usually small in the early years, and most of the hard work is already done the moment you get a defensible [409A valuation](https://409.ai/articles/what-is-a-409a-valuation-a-comprehensive-guide).
Here's how ASC 718 actually works, why it's separate from the tax rules you may already know, and how your 409A feeds directly into the expense you'll report.
What ASC 718 requires
The core idea is short. When your company gives someone equity as compensation, whether stock options, restricted stock, or RSUs, the Financial Accounting Standards Board (FASB) treats that grant as a real cost of doing business. You recognize the grant-date fair value of the award as compensation expense, spread over the period the recipient has to work to earn it. That's the whole standard in one sentence, codified by FASB under Topic 718.
Two words in that sentence do most of the work.
"Grant-date fair value" means you measure the award once, at the moment you grant it, and that number sticks. If your stock triples next year, the expense doesn't change. You locked it in on the grant date.
"Over the period the recipient has to work" is the vesting, or requisite service period. A four-year vest with a one-year cliff means you spread the expense across roughly four years, matching the cost to the service the employee provides.
Note what's missing: cash. ASC 718 expense is non-cash. It reduces your reported net income on the income statement, but no money leaves the building. That's exactly why founders find it confusing, and exactly why investors and auditors care. Equity is a real form of pay, and GAAP insists the P&L show it.
Fair value: where the 409A comes in
For restricted stock, fair value is close to the stock price itself. Options are harder, because an option isn't stock. It's the right to buy stock later at a fixed strike. To turn that right into a dollar figure, ASC 718 requires an option-pricing model, and for most private companies that means Black-Scholes-Merton.
Black-Scholes takes a handful of inputs:
- The **price of the underlying stock** on the grant date
- The **exercise (strike) price**
- The **expected term** (how long until options are exercised)
- **Expected volatility** of the stock
- The **risk-free interest rate**
- **Expected dividends** (usually zero for startups)
The first input is the one you already have. The price of the underlying common stock is your 409A fair market value. This is the direct handoff between the two standards: your 409A produces the FMV, and that FMV becomes the stock-price input in the model that produces your ASC 718 expense. If you want the mechanics of how that FMV is derived in the first place, our walkthrough of [how 409A valuations are calculated](https://409.ai/articles/how-are-409a-valuations-calculated) covers the methods.
It's worth being precise about a distinction that trips people up. A 409A gives you fair market value, a tax concept. ASC 718 uses fair value, an accounting concept. They're related but not identical, and we've written a whole piece on [why 409A value and fair market value aren't the same thing](https://409.ai/articles/409a-valuation-vs-fair-market-value). For the stock-price input into Black-Scholes, though, the 409A FMV is what most private companies use, and FASB has blessed a version of exactly that (more on the practical expedient below).
A worked example
Say you grant an engineer 10,000 options with a strike price of $1.00 per share, which matches your current 409A FMV of $1.00. You run Black-Scholes and it spits out a fair value of $0.45 per option.
Total compensation expense for that grant is 10,000 × $0.45 = $4,500.
The options vest over four years. Using straight-line recognition, you book roughly $4,500 ÷ 4 = $1,125 of stock comp expense each year. In the financial statements, that shows up as an operating expense with an offsetting increase to additional paid-in capital in equity. No cash moves.
Multiply that across a 10-person team and early-stage grants, and total annual stock comp expense often lands somewhere in the low tens of thousands of dollars. Small, but not zero, and auditors expect to see it computed correctly.
(These figures are illustrative. Your actual per-option fair value depends on your specific inputs, especially volatility and expected term.)
Recognizing the expense over time
Once you have the total, ASC 718 governs how you spread it. For awards that vest gradually, companies generally pick one of two attribution methods and apply it consistently: straight-line, which recognizes an even amount each period, or graded (accelerated), which front-loads expense because each vesting tranche is treated as its own mini-award.
Straight-line is simpler and by far the more common choice for startups. There's one guardrail: at any reporting date, cumulative expense recognized must be at least equal to the grant-date fair value of the portion that has actually vested. In plain terms, you can smooth the expense, but you can't fall behind what's already vested.
Then there's forfeiture. People leave before they vest, and those unvested options never become a real cost. ASU 2016-09 lets you make an entity-wide accounting policy election: either estimate expected forfeitures upfront and true up to actual experience over time, or simply recognize forfeitures as they happen and reverse expense when someone leaves. Many early startups elect to account for forfeitures as they occur because it's less bookkeeping when headcount and turnover are still small.
The private-company shortcuts you should know
FASB built in relief for private companies, and using it saves real money and effort.
First, expected term. Estimating how long employees will hold options before exercising is genuinely hard without years of exercise history. Nonpublic companies can elect to use the "simplified method," a standardized formula, rather than building an estimate from data they don't have yet.
Second, and more important for the 409A connection: ASU 2021-07 gives nonpublic entities a practical expedient for determining the current price of the underlying share. Instead of a separate fair value measurement, you can use a value produced by a "reasonable application of a reasonable valuation method." FASB pointed directly at the Treasury regulations under Section 409A, noting that a valuation performed in accordance with those regulations, such as a Section 409A valuation, is an example of a way to meet the expedient (see [FASB ASU 2021-07](https://storage.fasb.org/ASU_2021-07.pdf)). Translation: a properly performed 409A can serve as the stock-price input for your ASC 718 expense. One valuation, two jobs.
That's a big part of why a defensible 409A is worth more than its compliance value alone. It's covered further in our guide to [what startups must know about 409A valuations](https://409.ai/articles/409a-valuation-for-startups-what-you-must-know), and it's a strong reason not to cut corners on the appraisal.
What changed for 2026: profits interests
If your company is an LLC and grants profits interests instead of options, there's a recent update worth flagging. ASU 2024-01 clarifies when a profits interest award falls within the scope of ASC 718 rather than the general compensation guidance in ASC 710.
The distinction turns on how the award is structured. If the payout is tied to the growth in the overall market value of the entity (behaving like equity upside), ASC 718 generally applies, and you'll value it with an option-pricing model. If it's tied to accounting profits or metrics unrelated to enterprise value, ASC 710 may apply instead. The ASU adds four illustrative examples to help you place a given award (see [Withum's summary of ASU 2024-01](https://www.withum.com/resources/asu-2024-01-scope-application-of-profits-interest-and-similar-awards/)).
Timing matters here. For private companies, ASU 2024-01 is effective for fiscal years beginning after December 15, 2025, so calendar-year companies apply it starting in 2026. If profits interests are part of your equity plan, this is the year to make sure they're scoped and measured correctly.
Why ASC 718 is not the same as your option taxes
A frequent mix-up: founders assume the ASC 718 expense somehow changes what employees owe in tax, or vice versa. It doesn't. They run on separate tracks.
ASC 718 is financial reporting. It affects your GAAP income statement and what investors and auditors see.
The tax treatment of an option, by contrast, depends on whether it's an incentive stock option or a nonqualified option, when it's exercised, and how long the shares are held. That's a completely different rulebook, which we break down in [ISO vs. NSO: how each is taxed](https://409.ai/articles/iso-vs-nso-how-stock-options-are-taxed). Section 409A adds its own tax layer by requiring options to be struck at or above FMV in the first place, which is why the 409A exists at all. The [tax implications of 409A valuations](https://409.ai/articles/409a-valuation-tax-implications) sit on that side of the line, not the accounting side.
Keeping the two straight saves you from a common error: trying to "fix" a tax question by changing an accounting policy, or worrying that a large non-cash ASC 718 expense creates a tax bill. It doesn't.
When ASC 718 starts to matter for you
Plenty of pre-seed companies technically incur ASC 718 expense and never formally book it, because they don't yet produce GAAP financial statements. That changes fast. The trigger is usually an audit, and audits usually arrive with a priced round, a bank facility, or an acquirer's diligence.
Investors and buyers look closely here. During diligence they check whether option grants were valued against a real 409A, whether the expense was recognized consistently, and whether modifications (repricings, extended exercise windows, accelerated vesting) were accounted for. A clean, well-documented stock comp schedule signals a company that keeps its house in order. A missing or improvised one invites more questions than it's worth. Since a new 409A is also triggered by these same events, it helps to understand [how often you actually need a 409A](https://409.ai/articles/409a-valuation-frequency-how-often-should-you-get-one), because each fresh valuation sets the fair-value input for the grants you make after it.
The practical takeaway is narrow and worth acting on. Get your 409A done properly, keep the report, and treat it as the shared foundation for both your strike prices and your ASC 718 expense. When the auditor asks for the stock comp schedule, you won't be starting from zero. You'll be starting from a number you can defend, produced by a valuation you already have. If you need that valuation done by experts and reviewed for both purposes, that's what [409.ai's ASC 718 reports](https://409.ai/products/asc-718) are built for.