When Does Your 409A Valuation Expire? Triggering Events and Safe Harbor Timing

The 12-Month Safe Harbor Rule

Under Treasury Regulation 1.409A-1(b)(5)(iv)(B)(2), a 409A valuation remains valid for up to 12 months from the valuation date, provided no material event has occurred that would significantly affect the company's value. This is the so-called "safe harbor" period. During this window, the IRS presumes the valuation is reasonable, and the burden of proof falls on the government to demonstrate otherwise.

The 12-month clock starts on the valuation date, not the report delivery date. If your appraiser values the company as of January 15, 2026, but delivers the report on February 28, 2026, the valuation expires on January 15, 2027. Any stock options granted after that date using the old fair market value will not qualify for safe harbor protection.

This distinction matters because many startups confuse the report date with the valuation date. We recommend tracking both dates in your equity management system and setting calendar reminders at least 60 days before expiration to begin the renewal process.

Material Events That Trigger a New Valuation

Even within the 12-month window, certain events render the existing valuation stale. The IRS has not published an exhaustive list, but guidance from the regulations, IRS audit practice, and professional standards identifies several clear triggers.

Closing a priced equity round is the most obvious trigger. If your last 409A was done at a $20M pre-money valuation and you just closed a Series A at $50M pre-money, the old 409A no longer reflects fair market value. You need a new valuation before granting any additional options.

Other common triggers include: signing a term sheet for a funding round (even before closing), a significant change in revenue trajectory (positive or negative), launching a major product or entering a new market, losing a key customer that represents more than 20% of revenue, executive departures or additions, receiving an acquisition offer or LOI, and significant changes in the competitive landscape such as a major competitor exiting the market.

The IRS looks at whether a "reasonable person" would conclude that the company's value has materially changed. When in doubt, get a new valuation. The cost of an unnecessary valuation ($3,000 to $7,000) is trivial compared to the risk of granting options at a stale strike price.

Timing Your Valuation Around Fundraising

The most common timing question we hear is: "Should we get a new 409A before or after our funding round?" The answer is both, depending on your goals.

Get a valuation before your round if you want to grant options at the lower pre-money price. This is common for companies that want to reward early employees or provide new hires with a more favorable strike price. The valuation should be completed and the options granted before you sign a term sheet, because the term sheet itself can be considered a material event.

Get a valuation after your round closes to establish the new fair market value for future grants. Most companies need this valuation within 30 to 60 days of closing, since the round creates an observable transaction that directly informs the common stock value.

The "window strategy" works like this: complete a 409A two to four weeks before you expect to sign a term sheet, grant options immediately, then begin a new 409A engagement within two weeks of closing the round. This approach maximizes the benefit for option holders while maintaining full safe harbor compliance.

What Happens If You Grant Options on an Expired Valuation

Granting options with a strike price based on an expired or stale 409A valuation creates significant tax risk for option holders. Under IRC Section 409A, if the strike price is below fair market value at the time of grant, the options are treated as nonqualified deferred compensation. This triggers three consequences for the option holder.

First, the spread between the strike price and fair market value becomes taxable as ordinary income in the year the option vests, not when it is exercised. Second, the option holder owes an additional 20% penalty tax under Section 409A(a)(1)(B)(i)(II). Third, the option holder owes interest on the underpayment from the date the income should have been recognized.

For a typical startup employee with 50,000 options and a $2 per share underpricing error, the financial impact can be substantial. On a four-year vesting schedule, the annual inclusion plus penalty tax could exceed $15,000 per year.

The company itself is not directly penalized under Section 409A, but it does face reporting obligations under Section 6041 and potential liability for failure to withhold. More practically, companies that create 409A problems for their employees face talent retention issues, legal claims, and complications during due diligence for future funding rounds or acquisitions.

Building a 409A Compliance Calendar

We recommend every startup that issues stock options maintain a 409A compliance calendar with the following milestones. First, mark the valuation date of your most recent 409A and set a hard deadline 12 months later. Second, set a "renewal initiation" reminder at month 10, giving your provider at least 60 days for the new valuation. Third, create triggers in your board meeting agenda to discuss whether any material events have occurred since the last valuation.

For companies raising capital annually, the calendar typically looks like this: Q1 post-round valuation, Q3 check for material events, Q4 renewal initiation for the following year. Companies that grant options quarterly should consider semi-annual valuations to ensure continuous coverage.

At SpryTax, we manage this calendar for our clients as part of our 409A advisory service. We track valuation dates, monitor for material events during our monthly financial reviews, and coordinate directly with valuation providers to ensure uninterrupted safe harbor coverage. This eliminates the risk of accidentally granting options on an expired valuation, which remains one of the most common compliance failures we see in startup equity management.