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…
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