The 409A Valuation: A Founder''s Guide to the Number That Sets Every Employee''s Strike Price, Timed and Managed Correctly
Every startup that issues stock options has to obtain a 409A valuation — an independent appraisal of the fair market value (FMV) of its common stock. The IRS requires this because stock options granted at a strike price below FMV are treated as deferred compensation and taxed as ordinary income at grant, plus a 20% penalty. That outcome is catastrophic for employees. The 409A is the mechanism that prevents it.
Beyond compliance, the 409A is a real operating tool. Founders who understand the mechanics can time it to benefit employees, keep option grants attractive, and avoid pitfalls when raising rounds or running secondaries.
What it is: an independent appraisal by a qualified valuation firm of the fair market value of a company''s common stock as of a specific date.
Why it exists: IRS Section 409A treats stock options as deferred compensation. Options granted at or above the FMV of the underlying stock are exempt. Options granted below FMV are subject to immediate taxation plus a 20% penalty plus interest.
Who has to do it: every C-corp that issues stock options. LLCs and S-corps with profit interests have analogous requirements.
Who does it: an independent valuation firm. Common providers: Carta, Preferred Return, Pulley, Aumni, Aranca. Cost: $2,000–$5,000 for early-stage companies via a Carta-style bundled service; $10,000–$25,000 for a boutique firm for later-stage companies.
The 409A regulations provide three "safe harbor" methods that create a presumption of reasonableness. If the valuation is done under a safe harbor method, the IRS bears the burden of proving it was "grossly unreasonable" to challenge it.
The three safe harbors: 1. Independent appraisal. A qualified valuation done within the last 12 months by an independent, qualified appraiser. This is what almost every venture-backed startup uses. 2. Illiquid startup presumption. For companies less than 10 years old, with no publicly traded securities, and no anticipation of a change in control or IPO within 12 months, a valuation prepared by "someone with significant knowledge, education, or experience in valuing similar businesses" can qualify. Rarely used because independent appraisals are cheap enough. 3. Formula method. A pre-defined valuation formula applied consistently. Almost never used in venture-backed startups.
Practical rule: always use the independent appraisal safe harbor. The other two create audit risk that isn''t worth the cost saving.
Every 409A is presumed valid for 12 months from the effective date. On day 366, the presumption expires. Refresh before then — always. Missing this deadline is malpractice.
Even inside the 12 months, a material event can invalidate the 409A. Material events include:
A new priced round of financing. Every priced equity round requires a fresh 409A (usually 30–60 days after close).
A significant secondary transaction. A tender offer or founder secondary at a price above the current 409A triggers a refresh.
A meaningful change in business trajectory. A major customer loss, a large acquisition offer, a significant strategic pivot — any of these can invalidate the 409A.
A signed term sheet for a change of control (acquisition or IPO).
Grants made after a material event but on a stale 409A are at risk. Auditors and future investors will flag them.
The most common founder misunderstanding: "our preferred stock priced at $10/share, so the 409A must be $10/share." Wrong.
The 409A values common stock, which is different from preferred stock. Common is worth less than preferred because it lacks the liquidation preference, participation rights, and other economics of preferred. Typical common-to-preferred ratios by stage:
These are wide bands and depend on the specifics — the size of the preference stack, participation rights, dividend rights, and other terms. But the pattern is: early-stage common is discounted a lot; late-stage common converges toward preferred.
The scenario: the company is 90 days into a strong quarter and considering opening a new round in 4–6 months. Options granted now, on the current 409A, will be priced significantly lower than options granted after the round closes (when the new 409A will reflect the higher preferred price).
The play: for critical new hires or a broad-based refresh grant, issue options before the new round closes, on the current 409A. This gives employees a lower strike price and more upside.
The constraint: cannot be gamed too aggressively. Granting options the day before a round closes at a price 10x the current 409A will not survive an audit. But granting in the normal course of business, on a valid 409A, when a round is anticipated in the future, is a legitimate and common practice.
Sometimes a 409A refresh comes in lower than the previous one. This happens in three situations:
1. A down round. A new priced round below the last round drops the preferred price, and the common drops with it. 2. Deteriorated business fundamentals. A significant revenue decline or major customer loss can reduce the enterprise value estimate. 3. Multiple compression. The comparable public companies used in the valuation traded lower over the past year, reducing the market multiple applied.
A lower 409A is not a disaster — it actually helps future option grants (lower strike price, more upside for new hires). But it can cause discomfort for recent hires whose strike is now above the current 409A ("underwater" options). Do not repurpose or reprice these options without careful board and legal advice — some repricings trigger 409A issues themselves.
A secondary transaction — where investors buy stock from existing holders (usually early employees or founders) — creates a valuation data point that can affect the 409A.
Rule of thumb: if the tender offer price is meaningfully above the current 409A common price, the tender price becomes evidence of a higher common FMV, and the 409A should refresh upward. The refresh usually happens 30–60 days after the tender closes.
This is why some companies structure tender offers at the current 409A common price rather than at a premium — it avoids triggering a 409A refresh that would raise strike prices for future employees.
1. Missing the 12-month refresh deadline. Grants made on an expired 409A lose safe harbor protection. Immediate compliance risk. 2. Not refreshing after a round. Options granted between round-close and post-round 409A on the stale 409A create audit-time headaches. 3. Choosing the cheapest valuation firm to save $500. A bad 409A doesn''t save money — it creates diligence issues at every future round and at an eventual acquisition. Use a reputable firm. 4. Backdating grants. Grants with an "as of" date earlier than the actual approval date, chosen to catch a lower 409A, are securities fraud. Never. 5. Not budgeting for the 409A in each round close. Add $3–5k to every round close budget for the post-round 409A. It''s not optional.
The 409A is not just a compliance chore. It is the mechanism that keeps employee options tax-safe and correctly priced, and it interacts with every round, every secondary, every material business change.
Refresh every 12 months, always. Refresh after every priced round, always. Use the independent appraisal safe harbor. Time optional refresh grants around anticipated rounds to benefit employees. Do not game the timing beyond what''s defensible. Do not backdate.
Founders who understand and manage the 409A well grant options that create real wealth for employees and that survive diligence at every future milestone. Founders who treat it as a paperwork task discover expensive problems at exactly the wrong moment.
