The 409A Valuation Explained: A Guide for Founders

If you are granting stock options to employees, at some point someone on your team, your lawyer, or your accountant will ask about your 409A. For first-time founders, this can feel like unfamiliar territory. Before diving into paperwork or providers, it helps to understand what is a 409a valuation and why the IRS cares about it in the first place.

The Basic Definition

A 409A valuation is an independent, third-party assessment of the fair market value (FMV) of a private company's common stock. It gets its name from Section 409A of the U.S. Internal Revenue Code, which governs how companies must value and price deferred compensation, including stock options.

In plain terms: it is the official number that tells you what your common shares are worth today, separate from what your preferred shares sold for in your last funding round. That number becomes the strike price for any stock options you grant.

Why the IRS Requires It

Section 409A was introduced after a wave of executive compensation abuses in the early 2000s, where companies manipulated option pricing to benefit insiders. The rule now requires that stock options be priced at or above fair market value at the time of grant. If a company issues options below FMV without a defensible valuation, the IRS can treat this as deferred compensation, triggering immediate taxation, an additional 20 percent penalty tax, and interest charges for the option holder.

In short, a proper valuation protects both the company and the employees receiving equity.

Who Actually Needs One

Any private company issuing stock options to U.S. taxpayers generally needs a 409A valuation. This applies to: