If you grant equity to employees, you need a 409A valuation. It's one of the more technical requirements founders face, but getting it wrong creates real tax exposure for your team and compliance risk for your company. Here's what founders need to understand.
What a 409A Valuation Is
A 409A valuation is an independent appraisal of your company's common stock fair market value, named after Section 409A of the US tax code. It's used to set the strike price for employee stock options. The IRS treats 409A compliance as a condition for deferred compensation arrangements, including stock options, to avoid immediate taxation and penalties for employees.
The rule exists because the IRS wants to prevent companies from issuing deeply discounted options as a way of disguising additional compensation. By requiring an independent, defensible appraisal, Section 409A forces companies to price options at something close to the true fair market value of the stock on the grant date.
Why It Matters
If you grant options with a strike price below fair market value, and the valuation isn't defensible, the IRS can treat that discount as taxable income to the employee immediately, plus a 20% penalty. A properly conducted 409A valuation creates a "safe harbor" presumption of reasonableness, shifting the burden of proof to the IRS if the valuation is ever challenged.
This matters more than it might seem at first glance. Employees generally don't find out there's a problem with their options until years later, often at the worst possible moment: during an acquisition, an IPO, or when they try to exercise and sell. By then, the tax consequences can be significant, and the company's HR and legal teams are left scrambling to explain how options were mispriced. Maintaining a current, defensible 409A valuation is one of the simplest ways to avoid that outcome entirely.
How 409A Differs From Your Preferred Stock Valuation
Your 409A valuation values common stock, not the preferred stock price your investors pay in a priced round. Common stock is typically valued lower than preferred stock because it lacks the liquidation preferences, anti-dilution protections, and other rights negotiated into preferred terms — concepts covered in our overview of the essentials of term sheets. This gap, often called the "common/preferred spread," is a normal and expected part of the process, not a red flag.
The size of that spread varies by stage and by the specific rights baked into your preferred terms. Earlier-stage companies with simpler preference stacks tend to have a narrower spread, while later-stage companies with layered liquidation preferences across multiple financing rounds can see a wider gap between common and preferred value. Valuation providers typically use a combination of methodologies — such as an option pricing model or a probability-weighted expected return method — to allocate enterprise value across the different share classes and arrive at a defensible common stock price.
When You Need a New 409A
A new valuation is generally required every 12 months, or sooner after a material event such as a new priced financing round, a significant change in business performance, or a planned acquisition. Most companies time a refresh shortly after closing a round, since the new preferred price becomes a key input. This is one more reason to keep your capitalization table current and accurate — valuation providers will want clean, complete data.
Material events can also include things founders don't always think to flag, such as a major new customer contract, a significant pivot in the product, a large reduction in force, or an unexpected shift in revenue growth. If any of these happen between scheduled refreshes, it's worth checking with your valuation provider or finance advisor on whether the existing 409A is still defensible, rather than assuming you can wait for the 12-month mark.
Who Performs 409A Valuations
Companies typically engage an independent third-party valuation firm rather than performing the analysis internally, since independence strengthens the safe harbor protection. Many cap table platforms, including Carta, offer integrated 409A valuation services alongside equity management tools, which can simplify the process of keeping valuations, grants, and your cap table aligned.
When evaluating providers, founders should ask how the firm's reports have held up to audit or IRS scrutiny, what information they'll need from the company, and how quickly they can turn around a report after a triggering event like a financing close. Turnaround time matters in practice: if you close a round and want to grant new options promptly, a slow valuation provider can hold up your hiring plans.
Common Mistakes Founders Make
The most common mistake is delaying a refresh after a priced round closes, which can leave your company issuing options at an outdated strike price. Another is failing to disclose relevant business changes — new material contracts, management changes, or significant revenue shifts — to the valuation provider, which can undermine the safe harbor protection entirely. If you're raising a round, it's worth factoring a 409A refresh into your post-close checklist alongside updating investor cap tables and board consents, topics we also cover in our guide to startup valuations and the venture capital method.
A related mistake is treating the 409A as a one-time compliance box to check rather than an ongoing part of equity management. Founders sometimes also confuse the 409A valuation with the valuation used in fundraising conversations with investors, which can create confusing internal communications when the two numbers diverge significantly, as they often do by design.
Working This Into Your Fundraising Process
If you're preparing for a seed or Series A raise, loop in your finance lead or outside advisor early so your 409A, cap table, and option pool planning stay synchronized with your financing timeline. Our piece on the CFO's role in a startup discusses when it makes sense to formalize this function.
Building this rhythm early pays off later. Companies that treat 409A refreshes, cap table hygiene, and option pool planning as a connected process tend to move faster through diligence, since investors and auditors can quickly see that equity has been granted and tracked correctly from the start.
If you're preparing for a raise and want a second set of eyes on your strategy, materials, or investor targeting, book a free consult with Quantum Growth Advisors. We work with founders across stages to help them get fundraising-ready and connect with the right investors.