If your company plans to grant stock options to employees or advisors, you need a 409A valuation before the first grant. Without one, every option recipient can face a 20% IRS excise tax at vesting, plus interest, plus back taxes. The rule exists because stock options priced below fair market value are treated as discounted deferred compensation, which the IRS taxes immediately at vesting rather than at exercise.
This guide explains what a 409A valuation is, why it matters, when you need to update it, and what it costs in 2026.
What is a 409A valuation?
A 409A valuation is an independent appraisal of a private company's common stock fair market value (FMV). The name comes from Section 409A of the Internal Revenue Code, which governs non-qualified deferred compensation and applies directly to employee stock options in private companies.
The purpose is to establish a defensible strike price for stock options at or above the common stock's fair market value. Defensible means the IRS cannot successfully challenge it, which requires either a qualified independent appraiser or a specific formula method that applies only to very early-stage companies.
What happens if you skip a 409A?
If you grant options without a valid 409A valuation, or if your valuation has expired and you issue new grants without updating it:
The option recipient faces a 20% excise tax on the entire spread between the strike price and the fair market value at vesting. They also owe additional interest on any underpayment and may owe back taxes on the original grant. This means your employees get taxed before they sell a single share.
A person granted options worth $100,000 could owe $20,000 in IRS penalties at vesting without receiving any cash. For founders offering equity as a core part of their compensation package, a missing 409A is a recruiting and retention liability.
When do you need a 409A valuation?
You need a 409A before your first option grant. If you have no equity plan and have not issued any options, you do not yet need one. Once you are setting up your option plan or preparing to make your first grant, complete the valuation first. If you are going through a [INTERNAL LINK: "startup accelerator program" → /blog/best-startup-accelerators-in-nyc] that grants equity as part of its investment, a valid 409A must be in place before any option grants are issued.
Ongoing: a 409A valuation is valid for 12 months from the measurement date, or until a material event occurs, whichever comes first. You must complete a new valuation before issuing additional options once either condition is met.
What triggers an update before 12 months?
Certain events change your company's value materially enough that the existing valuation is no longer defensible. These material events require an updated 409A regardless of when your last report was completed:
| Material Event |
Why It Requires a New 409A |
| Closing a new funding round |
Raises implied common stock value; the old FMV is likely understated |
| Receiving a term sheet for acquisition |
Signals a potential exit value that changes FMV materially |
| Significant revenue growth or decline |
Changes DCF model inputs and comparable company multiples |
| New major customer or contract |
May affect projections used in the valuation model |
| Key employee departure or hire |
Can change business value if the person is business-critical |
| Major product launch or business pivot |
Alters the basis for future cash flow projections |
The most common trigger is closing a new funding round. Any round that provides meaningful evidence of the company's preferred stock value will also change the implied fair market value of common stock, making the prior 409A stale. For a full breakdown of how each round shifts ownership percentages across the cap table, see how dilution works across startup funding rounds.
How a 409A valuation is conducted
Most independent appraisers use a weighted combination of three accepted valuation methods:
Discounted Cash Flow (DCF): projects future free cash flows and discounts them back to present value using a risk-adjusted discount rate. Most relevant for revenue-generating companies with a visible growth trajectory.
Comparable company analysis: uses revenue or EBITDA multiples from comparable public companies to estimate your company's value. Tends to produce higher results than DCF for early-stage companies where revenue multiples are the market norm.
Recent financing transactions: uses the price of your most recent preferred stock round as the starting point and applies a discount for the lower priority of common stock. According to JP Morgan, the resulting FMV for common stock is typically 30 to 70% lower than the preferred stock price, reflecting the liquidation preference structure of venture-backed companies.
What 409A safe harbor means
'Safe harbour' means the IRS will treat your valuation as presumed reasonable unless it can show the methodology was grossly unreasonable. You achieve safe harbour by using a qualified independent appraiser and obtaining a report within the past 12 months with no intervening material event.
Without safe harbour, the burden of proof flips. You must prove to the IRS that your strike price was reasonable, which is difficult without a formal appraisal. The cost of losing that argument is paid by your employees.
How much does a 409A valuation cost in 2026?
Software-enabled platforms charge $499 to $1,500 and use automated models suited for pre-seed and seed-stage startups with straightforward cap tables. Traditional valuation firms with analyst-prepared reports charge $2,000 to $8,000 and are appropriate for companies approaching Series B or later, where audit scrutiny of equity accounting is higher.
Turnaround time is 3 to 10 business days for automated platforms and 2 to 4 weeks for traditional firms. For companies with a hard grant cycle timeline, the automated platforms are usually fast enough and defensible for the stage.
How to choose a 409A provider
For pre-seed through Series A, use a software-enabled platform. The methodology is defensible at this stage, the cost is manageable, and the turnaround is fast enough to keep your grant cycle moving.
For Series B and later: use an established firm with analyst-backed reports. Your auditors will expect a report they can stand behind, and the additional cost is worth it when the equity value is material.
For any stage: confirm that your provider carries professional liability insurance, delivers a written report with documented methodology, and has a track record with companies at your stage and sector. A spreadsheet with no documentation is not a defensible report.
One practical note: the round that triggers your next 409A is typically the same round you are actively fundraising for. Pitchwise gives you visibility into which investors are engaging with your pitch, which slides they are reviewing, and when to follow up so you can close the round faster and get back to building. See how to know if an investor has opened your pitch deck for how to use that data in a live fundraise.
FAQ
Do I need a 409A before forming an option plan?
No. You need a 409A before issuing your first option grant. You can complete the plan design first. Just do not issue any grants until you have a valid 409A in place.
How long is a 409A valuation valid?
Twelve months from the measurement date, or until a material event occurs, whichever comes first. If you raise a new funding round on month 11 of your current valuation, the old report is no longer valid, and you need a new one before issuing additional options.
Can I do my own 409A valuation?
Technically yes, using the formula method, but only if you are pre-revenue and your most recent funding closed within the past 10 months. In practice, the formula method does not provide safe harbour protection for most startups. Use an independent appraiser.
Is a 409A the same as a company valuation for investors?
No. A 409A values common stock at its fair market value for IRS compliance purposes. Investor valuations reflect what investors will pay for preferred stock, which carries liquidation preferences and other rights that common stock does not have. The preferred stock price is always higher than the 409A FMV for common stock.
What is the penalty for granting options without a 409A?
Option recipients face a 20% excise tax under Section 409A, plus premium interest on the underpayment, plus applicable state penalties. The liability falls on the employee, not the company, which makes this a real risk to your ability to attract and retain talent with equity.
