409A Valuation vs. Preferred Price: How Investors Read It

The 409A valuation prices a startup's common stock for employee option grants, while the preferred price is what investors negotiate and pay in a round. Common usually lands well below preferred because it lacks preferred's liquidation preference, control rights, and liquidity. For an investor, we see the 409A mainly as a signal about option hygiene and tax risk, not a benchmark for the round.

This guide is written for investors. If you're a founder getting your own 409A done, start with the founder guide to 409A valuation, which covers timing, cost and penalties.

Definition: A 409A valuation is a third-party appraisal of the fair market value of a private company's common stock, refreshed at least every 12 months or after a material event, that lets the company grant options at or above fair market value without penalty taxes under IRC Section 409A.

Illustrative worked example: A seed company sells Series Seed preferred at $1.00 per share. Its appraiser backsolves from that round, applies a discount for lack of marketability, and concludes common is worth $0.30 per share, or 30 percent of the preferred price. New employees get options struck at $0.30. If the company later sells for $5.00 per common share, an employee with 10,000 options nets $47,000 of gain. The $0.30 did not change what the investor paid or owns.

Two prices, one company. They're answering different questions.

What a 409A valuation measures, and what the preferred price measures

Section 409A governs nonqualified deferred compensation. Options granted with a strike below fair market value fail the rules, so a US startup that grants options generally needs a defensible fair market value for its common stock.

The preferred price is something else entirely: a negotiated number for a different security with different rights. Cooley GO calls the comparison between a 409A value and a venture valuation "apples and oranges."

Appraisers reach a common value with one of three approaches:

Market approach. After a financing, usually an option pricing model backsolve.
Income approach. For companies with real revenue and forecasts.
Asset approach. For very early companies.

They then subtract a discount for lack of marketability (DLOM), because private common can't be sold freely. Carta cites a typical DLOM of 25 to 35 percent for a standard holding period.

Why common stock is priced below preferred

New investors often see a $0.30 common value next to a $1.00 preferred price and assume something is wrong. Usually nothing is.

Preferred stock nearly universally carries a liquidation preference: Cooley's Q2 2026 venture financing report found a 1x preference in 95.8 percent of deals and non-participating preferred in 96.4 percent. It also brings protective provisions and often a board seat. In a modest exit, preferred holders get their money back first and common may receive little. The 409A prices that risk in.

How big is the gap? Valuation firm Scalar describes an old rule of thumb of about 20 percent of the preferred price at Series A and about 30 percent at Series B. Its current view depends on terms. With plain vanilla preferred (1x, non-participating, no cumulative dividends), common often lands at 30 to 50 percent of preferred, and richer investor terms can push it into the teens or 20s.

Treat these as orientation, not a standard. Our read is that the direction matters most: the heavier the preferred terms and the further the company is from an exit, the deeper the discount.

For the rights behind the gap, see the guide to common vs. preferred stock.

How an OPM backsolve sets the 409A common price

After a priced round, Carta says 409A providers typically use the option pricing model (OPM) backsolve. Accounting firm Armanino describes the backsolve as using the price of a recent preferred financing, with its liquidation rights, to work backward and solve for total equity value. In practice:

Map the waterfall. List every class, its liquidation preference, and conversion terms, and find the breakpoints where proceeds shift between classes.
Treat each class as a call option. Each class is modeled as an option on company proceeds above its breakpoint, using inputs such as time to a liquidity event, volatility, and the risk-free rate.
Solve for total equity value. Adjust total value until the model's price for the new preferred equals the price investors actually paid.
Read off the common value. The same model gives a per-share value for common, which sits below preferred because common only participates above the preference stack.
Apply the DLOM. Discount the common value for illiquidity to reach fair market value.

Assumptions such as time to exit and volatility change how much value the model assigns to common. So ask for the report's key inputs, not just its conclusion.

How investors read a 409A valuation in diligence

Investors rarely negotiate price off the 409A. Most read it for hygiene, the same instinct behind our habit of reading the cap table before the deck. Here's one checklist to run during financial due diligence:

Is there a current report? A reasonable first request is the most recent 409A, its date, and the appraiser. Under the Treasury regulations, an independent appraisal is presumed reasonable only if it is dated no more than 12 months before the grant.
Was it refreshed after the last round? The regulations say a prior value stops being reasonable once later information may materially affect it. Carta treats closing a priced, SAFE or convertible note round as such an event.
Do grant records match? Cross-check the option ledger on the cap table against 409A dates. Under Section 409A, each strike should be at or above the fair market value in force on its grant date.
Are there discounted grants? RSM's summary of the rules explains that holders of noncompliant options face tax on the spread at vesting, an additional 20 percent tax, and premium interest, and that the employer has reporting and withholding obligations. The cleanup cost and the morale hit would land on the company you're about to fund.

A company that raises a Series A in March and keeps granting against an October 409A is likely granting below fair market value. That's a red flag, and a fixable one if you catch it before you wire.

What the 409A does not tell you

A low or falling 409A doesn't necessarily mean a company is struggling. Carta's data on 409A trends found that in Q1 2023, 39 percent of Series B 409As declined versus 19 percent at seed, during a market correction when pre-money valuations fell at every stage. We'd read that as a market artifact, not a verdict on one company.

The 409A also says nothing about preferred terms such as liquidation preference and anti-dilution provisions. And it doesn't price your investment: Cooley GO notes it is very rare for a future investor to be anchored by a 409A. Whatever the provider, it's good practice for the company to keep the full report, the appraiser's credentials, and the board resolutions approving each grant.

To run this kind of review on live deals, 1752vc's Emerging Angels program puts accredited investors who are new to angel investing inside a working fund's process for eight live weeks: live diligence calls, deal reviews, and monthly Investment Circles, where questions like "is this option pool clean?" come up on real companies.

The bottom line

The 409A isn't a second opinion on your price. It's a compliance document that tells you whether the company has been granting options carefully.

Read it for dates, refreshes and strikes. Leave the pricing debate for the term sheet.

The preferred price tells you what you paid. The 409A tells you how carefully they've been paying their team.

Key takeaways

A 409A valuation prices common stock for option grants; the preferred price is a negotiated number for a different security.
Common typically lands well below preferred because it lacks liquidation preference, control rights, and liquidity, and Scalar puts plain vanilla deals at about 30 to 50 percent of preferred.
After a round, 409A providers typically use an OPM backsolve that starts from the preferred price and solves for the common value.
Investors tend to read the 409A for hygiene: a current report, a refresh after the last round, and grants at or above fair market value.
A 409A does not anchor round pricing and says nothing about preferred terms.

Frequently asked questions

Why is the 409A valuation lower than the preferred price?

Investors buy preferred stock with a liquidation preference, protective provisions, and often a board seat, while common stock has none of those and cannot be sold freely. The 409A allocates less of the company's value to common and then applies a discount for lack of marketability, so the common value is usually a fraction of the latest preferred price.

What percentage of the preferred price is a 409A valuation?

There is no fixed ratio. Scalar describes an old rule of thumb of about 20 percent of preferred at Series A and 30 percent at Series B, and says plain vanilla terms (1x, non-participating, no cumulative dividends) often produce 30 to 50 percent. Richer investor terms can push common into the teens or 20s, so the answer depends on the preference stack.

What is the OPM backsolve method in a 409A valuation?

The option pricing model backsolve starts from the price investors just paid for preferred stock and works backward to the total equity value that justifies it. The model treats each share class as a call option on exit proceeds, using assumptions for time to exit and volatility, then reads off the value of common before a marketability discount is applied.

Do investors use the 409A valuation to price a round?

In most cases, no. Cooley GO notes it is very rare for a future investor to be anchored by a 409A in a venture valuation negotiation. Investors typically price preferred stock on traction, market, and round dynamics, and review the 409A in diligence to confirm that options were granted at fair market value and that the company is not carrying hidden tax exposure.

What should investors check in a startup's 409A valuation?

A reasonable list: the report date and appraiser, whether it was refreshed after the most recent financing, and whether every option grant on the cap table has a strike at or above the fair market value in force that day. It is also worth asking for the key assumptions, such as time to exit, volatility, and the marketability discount, and the board minutes approving each grant.

Sources

Disclaimer: This guide is for general education only and is not legal, tax or investment advice. Laws, market data and program terms change, so it may not reflect the latest developments or fit your situation. Treat it as a starting point, not a source of truth, and talk to a qualified lawyer, accountant or financial adviser before you make decisions.