Compliance

409A Valuation Frequency: How Often Should You Get One?

Annual, quarterly, or after every funding round? The answer depends on your company's stage and what has changed since your last valuation. This guide breaks down the IRS requirements and the key events that trigger an update.

By 409.ai team - 2025-07-14

Timing is one of the most underestimated aspects of 409A compliance. Many founders treat a 409A valuation as a box to check once and forget, but the reality is that keeping your valuation current is an ongoing responsibility with real legal and financial consequences. Deciding how often to conduct a 409A valuation requires careful consideration of regulatory requirements, your company's stage, and the business events that can change your fair market value (FMV) overnight.

The Baseline Rule: Every 12 Months

The starting point for every company is straightforward. A 409A valuation expires 12 months from its effective measurement date, and the IRS provides no grace period beyond that. Once the valuation expires, any stock option grants made without a renewed valuation lose safe harbor protection, exposing your employees to immediate income taxation and a 20% federal penalty tax on the deferred amount.

It is worth noting that the 12-month clock runs from the measurement date of the valuation, not the date the report was issued. This distinction matters because the two dates are not always the same, and using the wrong reference point can create a compliance gap you are not aware of.

Even if nothing about your business has changed in 12 months, a renewal is still required. Market inputs such as public company comparable multiples, the risk-free rate, and volatility data change constantly, even when your business does not. A renewal that does not update these inputs is not a compliant valuation.

Material Events: When 12 Months Is Too Long

The 12-month rule is the minimum. Many companies need updates more frequently because of material events, which are developments that a reasonable person would expect to significantly affect the company's fair market value. When a material event occurs, the prior valuation is no longer considered reasonable for option grants made after that event, regardless of how recently it was completed.

Common material events that require an immediate 409A update include:

• Closing a new financing round (priced equity round, SAFE conversion, or convertible note with significant terms)
• Receiving a term sheet or entering discussions around a merger or acquisition
• A major product launch or regulatory clearance that materially changes projections
• Significant revenue growth or, conversely, a major customer loss or business setback
• A meaningful pivot in business model or market strategy
• A significant change in leadership

Post-2024 IRS guidance has broadened these triggers to include substantial customer wins or losses, major contract signings, and significant operational pivots that could impact company value. The practical test is whether a reasonable person would expect the event to affect FMV. When in doubt, the safer path is to commission an update.

How Frequency Varies by Company Stage

Not all companies face the same cadence. The right frequency depends heavily on how fast things are changing.

Early-stage startups operating in a stable environment between funding rounds typically require one valuation per year. The key is to schedule it far enough in advance of your annual option grant cycle to ensure the report is complete before any grants are issued. A common practice is to align the annual 409A with fiscal year-end or the board's approval of the option budget.

Venture-backed startups raising multiple rounds per year may need two or three valuations annually. A practical approach is to budget for a 409A refresh within 60 to 90 days of each financing event, and to avoid granting options in the window between a financing close and the completion of the updated valuation.

Later-stage companies approaching an IPO or M&A event often move to a quarterly cadence. As a company is planning a potential IPO in the next 12 to 18 months, the valuation cadence typically increases considerably to a quarterly basis. At this stage, the stakes are higher and the scrutiny from auditors, underwriters, and potential acquirers is much more intense.

Established, stable companies with predictable financials and no significant corporate events may be comfortable with a straightforward annual update, as long as they monitor for any triggers that would require an interim valuation.

A Common and Costly Mistake

One of the most frequent compliance errors founders make is completing a 409A valuation and then continuing to grant options for months after a material event without commissioning a refresh. A company might complete a 409A during its Series A, then continue granting options for the next 18 months without an update, despite closing a Series B, growing revenue significantly, and receiving acquisition inquiries. Each of those events independently requires a new valuation before additional grants can be issued.

A 409A commissioned after a grant, or backdated to align with a grant date, does not provide the same legal protection as one completed in advance. The valuation must be in place before the options are granted.

The Benefits of Staying Current

Beyond avoiding penalties, maintaining a current 409A valuation has practical benefits for your business.

More frequent valuations give management a clearer, more accurate picture of the company's financial health and how it evolves over time. They also build a coherent valuation history that strengthens your position with investors and acquirers during due diligence. For employees, knowing that the company takes valuation compliance seriously builds confidence that their equity is being handled fairly and accurately.

Refresh valuations are also generally faster and less expensive than original valuations, since the appraiser can build on prior work. Typical refresh timelines run one to three weeks.

Practical Guidelines for Planning Your Cadence

• Plan for at least one 409A per year, scheduled before your annual option grant cycle
• Budget for a refresh after every financing event, ideally within 60 to 90 days of closing
• Do not grant options between a material event and the completion of an updated valuation
• Before approving any batch of option grants, confirm the