409A Valuations Explained
What startups need to know about stock option valuations, compliance requirements, and how to avoid costly tax penalties.

Key Takeaways
- •A 409A valuation is an independent appraisal of your company's common stock fair market value, required by IRS Section 409A before granting stock options
- •Granting options below fair market value triggers immediate taxation, a 20% penalty tax, and interest charges for employees
- •You need a 409A before your first option grant, after each priced funding round, and at least annually
- •Common stock typically values at 25-40% of preferred stock price due to liquidation preferences
What Is a 409A Valuation?
A 409A valuation is an independent assessment of your company's common stock fair market value. It's used to set the exercise price (also called strike price) for stock options. The valuation must be performed by an independent third party using recognized valuation methods.
Why 409A Compliance Matters
When You Need a 409A Valuation
Mandatory triggers include: before your first option grant, after each priced funding round (typically within 90-120 days), at least annually, and after material events like significant business changes.
Common 409A Triggers
- Before granting first stock options to employees
- After each priced equity financing round
- At least annually (valid for 12 months)
- Signing a significant new customer contract
- Major pivot or change in business model
- Key executive hire or departure
Valuation Methods
The Market Approach values the company based on comparable transactions or public companies. This is best for companies with clear comparables and post-revenue companies.
The Income Approach values the company based on expected future cash flows, discounted to present value. This is best for companies with predictable cash flows.
The Asset Approach values the company based on its underlying assets minus liabilities. This is typically used for asset-heavy businesses.
Common vs. Preferred Pricing
Preferred stock has additional rights like liquidation preferences, anti-dilution protection, and dividend rights that make it worth more. Common stock only has value after preferred shareholders are paid out, typically resulting in a 25-40% discount for early-stage companies.
Choosing a Provider
The 409A Process
First, engage a provider. Choose a 409A valuation provider. Typical timeline is 1-3 weeks for simple valuations, longer for complex cap tables.
Second, provide information. You'll need to provide financial statements, cap table, funding documents, business plan, and other relevant information.
Third, valuation analysis. The provider performs their analysis using appropriate valuation methods and prepares a detailed report.
Fourth, board approval. The board reviews and approves the valuation before options can be granted.
Common 409A Mistakes to Avoid
- Granting options before getting a 409A valuation
- Using an outdated valuation (older than 12 months)
- Backdating grant dates to old valuation
- Failing to update after material events
- Using the wrong valuation provider for your stage
Frequently Asked Questions
Need Help With 409A Compliance?
Eagle Rock CFO can help you navigate 409A requirements, coordinate with valuation providers, and ensure your equity compensation is compliant.
This article is part of our Startup Tax Guide: What Every Founder Needs to Know guide.