A 409A valuation is an independent appraisal of a private company’s common stock that the IRS requires before you can grant incentive stock options or any equity at a defensible exercise price. Without one, every option grant is a tax landmine — for the company and the employee.
If you’re a founder or CFO trying to figure out whether you need one, when, and what it’ll cost, the practical answers are below. The legal mechanics matter, but they’re not what’s actually keeping you up at night; the timing and cost decisions are.
When you need a 409A
You need a fresh 409A in any of these situations:
- Before issuing your first stock option grant. Full stop. Don’t grant options until you have one.
- At least once every 12 months, even if nothing has changed.
- After a “material event” — a priced equity round, a significant secondary, an acquisition offer, a major pivot, a financial milestone (large customer, regulatory clearance, layoff). Anything that meaningfully changes the company’s value.
- Before granting options in a stale window. If your last 409A is older than 12 months or pre-dates a material event, the IRS won’t recognise it as safe harbour and the strike price is open to challenge.
The safe-harbour clock isn’t strictly 12 months — the rule is “no material event since”. But the practical default most startups use is annual, with refreshes after each priced round.
What it costs
US market prices for an independent 409A valuation in 2025–2026, by company stage:
| Stage | Typical price (one-time) | Provider type |
|---|---|---|
| Pre-seed / pre-revenue | $1,000 – $2,500 | Bundled service via cap-table platform (Carta, Pulley, AngelList, etc.) |
| Seed → Series A | $2,000 – $4,000 | Bundled or specialist appraiser |
| Series B–C | $4,000 – $8,000 | Specialist independent appraiser |
| Series D+ / pre-IPO | $8,000 – $25,000+ | Big-four or specialist appraiser, more methodology required |
Most early-stage companies get their 409A as part of an equity management platform bundle. It’s cheap because the platform already has your cap table data and a templated process. Once you’re past Series B, you’ll usually want a real independent appraiser — the methodology gets more complex (option-pricing models, multiple scenarios, hybrid valuation approaches) and the IRS scrutiny goes up. Stripe’s well-publicised 2023 internal tender at a $50B FMV (down from a $95B peak) is a high-profile reminder that 409A common-stock FMV is independent of preferred-stock pricing.
How to actually get one
The flow:
- Pick a provider. Cap-table-bundled (Carta, Pulley, AngelList) for early stage; specialists like Aranca, Andersen, or Mercer for later stage. Tie the engagement to your broader startup valuation methods approach. The qualifications that matter for safe harbour are: independence (not your CFO, not your investor), credentials (CFA, ASA, or equivalent), and willingness to defend the report under IRS audit.
- Provide the data they ask for. Cap table, financials (3 years historical + projections), recent term sheets, board materials, key customer/contract information, and a memo on any material events since the last valuation.
- Wait 1–3 weeks. Most early-stage 409As complete in 5–10 business days; complex late-stage ones take 3–4 weeks.
- Review the draft. Check the assumptions and projections. Push back on anything that looks wrong before it’s finalised — it’s much easier to revise a draft than challenge a final report later.
- Get the strike price. The valuation produces a per-share fair-market value for common stock. You grant options at or above that price.
The safe-harbour rules that matter
Section 409A of the Internal Revenue Code, enacted in 2004, treats option grants priced below fair market value as deferred compensation. That triggers immediate income tax to the optionee, a 20% federal penalty, and (in California) an additional 20% state penalty — all on income they haven’t actually received yet. Disastrous for the employee, embarrassing for the company.
The IRS provides three safe harbours that shift the burden of proof to them if the valuation is later challenged. In practice, only one matters for venture-backed companies:
Independent appraisal safe harbour. A qualified independent appraiser produces a valuation that’s no more than 12 months old and isn’t undermined by a subsequent material event. This is what every cap-table platform delivers.
The other two safe harbours (illiquid-startup founder method, formula-based) exist but are rarely worth the trouble — they impose conditions that don’t fit most VC-backed companies (less than 10 years old, no public-trading expectation, etc.).
If you skip the independent appraisal and price options at the cap-table-platform’s “fair market value” without a formal report, you’re not in safe harbour. You may still be fine. But you’ve moved the burden of proof to yourself.
What’s actually in the report
A 409A report typically runs 25–50 pages. You don’t need to read all of it, but you should at least skim:
- Executive summary — the bottom-line FMV per share. This is your strike price floor.
- Methodology section — which approaches were used (income, market, asset, OPM, PWERM) and weights. For most early-stage companies it’s a hybrid OPM + market comparables.
- Comparable companies list — make sure they actually look like you. A B2B SaaS company being benchmarked against consumer marketplaces is a red flag.
- Discount for lack of marketability (DLOM) — typically 20–35% for venture-backed private common stock. Lower DLOMs (under 15%) post-Series-C are normal as IPO probability rises.
- Material events disclosed — anything from your data room that the appraiser leaned on. If you forgot to mention something material (a hot acquisition discussion, a major customer loss), the report’s safe-harbour status is weakened.
Common mistakes founders make
- Granting options before getting a 409A. Every option granted before your first 409A is a 409A violation waiting for the IRS to find it. Use a board resolution to defer the grant date until the valuation is final.
- Using a stale valuation after a priced round. Closing a Series A and continuing to grant options at the pre-round strike price is a textbook material event violation. Get a refresh.
- Treating the 409A as a target, not a floor. Some founders push the appraiser for the lowest possible FMV to give employees more upside. That’s fine if the methodology supports it. It’s a problem if you’re cherry-picking. The IRS audit standard is “reasonable application of a reasonable methodology” — not “lowest defensible number”.
- Confusing 409A FMV with the priced-round price. The Series A price is for preferred stock with rights. The 409A is for common with no rights. The common-stock FMV is almost always lower than the priced-round share price — typically 20–40% lower at seed/Series A, narrowing as the company matures and IPO probability rises.
- Skipping the report on a tight timeline. “We’ll grant options first and get the 409A next month” is the most common mistake. Don’t.
Frequently asked questions
Do I need a 409A if I’m only granting RSUs?
Probably yes. RSUs are not strictly subject to 409A pricing rules (the deferred-compensation analysis differs), but the FMV established by a 409A still drives the tax accounting at vesting and the price for any company-bought-back shares. Most companies that grant RSUs get a 409A anyway.
Does a SAFE or convertible note trigger a refresh?
Generally no — until the SAFE/note converts. SAFEs and notes don’t establish a price for common stock. The conversion event itself, however, is a material event for the next 409A.
Can I do my own 409A?
Technically yes — the “illiquid-startup founder” safe harbour allows a qualified internal valuation under specific conditions (company under 10 years old, no public-trading expectation, the valuer has 5+ years of relevant experience). In practice almost no one uses this — the cost of an external 409A is too low and the audit risk too high to justify rolling your own.
What if the IRS challenges the valuation?
If you have a qualifying independent appraisal in safe harbour, the IRS has to prove the valuation was “grossly unreasonable” — a high bar. If you don’t have safe harbour, you have to prove the valuation was reasonable, which is much harder and more expensive. The cost of a real 409A is dwarfed by the cost of defending one in audit.
Does a 409A affect founder common stock?
The 409A FMV is the price floor for option grants and the basis for tax accounting on stock buybacks. It doesn’t directly affect founder common stock that’s already issued — but if a founder is granted additional common stock after the company is operational, the 409A FMV applies to that grant. Founder shares held long enough may also qualify for the QSBS Section 1202 federal tax exclusion, an entirely separate analysis from 409A FMV.
The bottom line
A 409A valuation is cheap insurance against a category of tax mistake that’s hard to unwind once it happens. Get one before your first option grant, refresh it annually or after any priced round, and use a qualified independent appraiser so you stay in safe harbour. The actual mechanics — methodology, comparables, DLOM — matter less than the discipline of just having a current report on file.
Once you have a current 409A, the strike price decision is simple: that’s the floor. Any option granted at or above that number is defensible. Anything below is a problem you don’t want.