409A Valuation
A 409A is an independent appraisal of a private company's common stock fair market value, required by U.S. tax law before issuing stock options to employees.
What Is a 409A Valuation?
A 409A valuation is an independent, third-party appraisal of the fair market value (FMV) of a private company’s common stock. It takes its name from Section 409A of the Internal Revenue Code, the U.S. tax regulation that governs deferred compensation — including employee stock options.
Any U.S. company issuing stock options to employees or contractors must grant them at or above FMV to comply with 409A rules. Without a proper valuation, employees face significant tax penalties that can make their equity worthless before they even benefit from it.
Why 409A Compliance Matters
The consequences of non-compliance are severe — and they fall on the employee, not the company:
- Immediate income recognition: Options granted below FMV are treated as compensation income in the year of vesting, not exercise
- 20% penalty tax: On top of ordinary income tax, the IRS imposes an additional 20% excise tax
- State penalties: Some states add further penalties (California is particularly aggressive)
For a startup with many employees holding underwater options, a 409A compliance failure discovered during due diligence can kill a deal or require expensive remediation.
How the 409A Valuation Is Calculated
Valuation firms use one or more of three standard methods:
1. Market approach
Compares the company to similar public companies or recent private transactions. Analysts select comparables by industry, growth rate, and business model, then apply revenue or earnings multiples.
2. Income approach
Projects future cash flows and discounts them to present value. Used more often for mature companies with predictable revenue; less common for early-stage startups.
3. Asset approach
Values the company based on the net value of its assets. Rarely used for software startups but relevant for asset-heavy businesses.
For early-stage startups with no revenue, the market approach using recent funding round data and a back-solve methodology (working backward from the preferred stock price to determine common stock value) is most common.
Common Stock vs. Preferred Stock: The Discount Explained
The 409A valuation is almost always lower than the company’s last round valuation. This is intentional and correct.
| Factor | Preferred stock (investors) | Common stock (employees) |
|---|---|---|
| Liquidation preference | ✓ Gets paid first in exit | ✗ Paid after preferences |
| Anti-dilution protection | ✓ Protected from dilution | ✗ No protection |
| Conversion rights | ✓ Can convert to common | N/A |
| Voting rights | Often enhanced | Standard |
| Typical discount to preferred | — | 20–80% |
A company that raised at a $20M valuation might receive a 409A valuing common stock at $12–16M — reflecting the structural disadvantage of common shares relative to the preferred shares investors hold.
When You Need a New 409A
A 409A valuation expires after 12 months or when a material event occurs, whichever is sooner. Triggers for a new appraisal include:
- Closing a new funding round (priced equity or convertible)
- Signing a letter of intent for an acquisition
- A significant change in revenue, burn, or business model
- Granting a large new option pool
Best practice: refresh your 409A immediately after every priced round, before issuing new option grants.
Who Does 409A Valuations
| Provider type | Best for | Approximate cost |
|---|---|---|
| Carta, Pulley, Preferred Return | Pre-seed to Series B | $1,000–$3,000 |
| Boutique valuation firms | Series B+ | $3,000–$10,000 |
| Big Four accounting firms | Pre-IPO / M&A | $10,000–$25,000+ |
Equity management platforms like Carta have made 409A valuations fast (2–5 business days) and affordable for early-stage companies. For companies approaching an IPO or being acquired, a Big Four firm provides greater defensibility under IRS scrutiny.
Key Takeaway
A 409A valuation is not bureaucratic overhead — it is the legal foundation for your equity compensation program. Skipping or deferring it exposes your employees to serious tax liability and creates material risk in M&A due diligence. Get one before you issue your first option grant, refresh it after every funding round, and use a reputable third-party provider so the appraisal can withstand IRS challenge.