409A Valuation vs Preferred Price: Key Differences

The main difference is the share class and who sets the number. Investors and the company negotiate the preferred price. An appraiser estimates the 409A value under tax rules. The table compares them on what each is, who sets it, who uses it, the legal and tax role, risk, liquidity and a typical case.

Preferred stock carries rights that common stock lacks. The main one is a liquidation preference: in a sale, preferred holders get their money back before common holders get anything. Preferred can also convert into common when that pays more. The common vs preferred stock guide lists the rest.

Those rights matter most when the outcome is modest. Say investors have put in $100 million with a preference, and the company sells for $80 million. Preferred holders take the full $80 million. Common holders get nothing. In a large sale, preferred converts and everyone shares alike.

An appraiser has to price common across all those outcomes. The 409A rules also allow a discount for lack of marketability, because private common shares are hard to sell. One common method works back from the preferred price, the OPM backsolve. The result is generally below the preferred price.

The headline valuation in the press usually multiplies the preferred price by every share, common included. At $10.00 and 50 million fully diluted shares, that is $500 million. Common shares are worth less than $10.00 each, so the headline overstates what they are worth. The post-money valuation guide explains the math.

A private company has no market price for its common stock, so it hires an appraiser. Under Treasury Regulation §1.409A-1, the method must weigh the company’s assets, expected cash flows, comparable companies and recent arm’s-length sales. A value is no longer reasonable after 12 months, or sooner if material news is ignored.

The rules give a safe harbor when the company uses an independent appraisal no more than 12 months old. A young start-up can also rely on a written report by someone with generally five years of relevant experience. That route is closed if a sale is expected within 90 days or an IPO within 180 days. The IRS can then overturn a value only if it was grossly unreasonable.

The rules also fix which shares options can cover. To stay outside Section 409A, an option must be on common stock with no preference as to distributions. So employee options are written on common, and the 409A value is the one that counts. The 409A valuation guide covers the appraisal in full.

• Option strikeMust be at least the fair market value of common stock at grant. For a private company, the 409A supplies that value. Incentive stock options have the same floor under Section 422.
• Option priced too lowThe option becomes deferred pay that fails Section 409A. The holder owes tax as it vests, plus an extra 20% and interest. See 409A penalties.
• Exercise of a non-qualified optionThe share value at exercise minus the strike is wages, under IRS Topic 427. A recent 409A is the usual evidence of that value.
• RSUs and restricted stockTaxed at the value of common stock when they vest, under Section 83.
• Preferred bought for cashNo tax at purchase. Your basis is what you paid plus costs, according to IRS Topic 703. Tax comes when you sell.

Example: One Grant at Two Prices

A company sells Series B preferred at $10.00. Its next 409A values common at $3.50. An engineer receives options on 10,000 shares at that strike, so exercising costs $35,000. Had the strike been set at the preferred price, it would cost $100,000.

Two years later, a new 409A puts common at $6.00, and she exercises non-qualified options. Her taxable wages are 10,000 times $2.50, or $25,000. The preferred price never enters her tax return. Only the 409A at grant and the value at exercise do.

Each number serves a different side, so neither is better. For an investor, the preferred price is the cost of entry, and the preference protects it in a weak sale. For an employee, a 409A below the preferred price means cheaper options and more room for gain.

Each new round tends to lift both numbers. A tender offer at a price close to the preferred price is a recent arm’s-length sale. The next 409A has to weigh it, which can raise the strike on new grants. The 409A vs FMV guide covers how sale prices feed into the appraisal.

409A Valuation

For

Gives employees a lower strike. Follows tax rules with a safe harbor. Updated at least yearly.

Against

An estimate with no market behind it. Rises after each round. A flawed one can cost option holders a 20% penalty.

Verdict: the 409A is the number that matters for anyone paid in options. Read it as the tax value of plain common shares. It is not a price anyone has agreed to pay.

Preferred Price

For

A real price paid in cash. Comes with a preference and other protections. Sets the headline valuation.

Against

Overstates the value of common shares. Fixed until the next round, however the business changes.

Verdict: the preferred price is the number that matters for investors. It buys rights employees do not have. Using it to value your options overstates what you hold.

If you get an offer with options, ask for two numbers: the strike and the last preferred price. The gap shows how much of the headline value common shares really carry. Ask for the date of the 409A too. A value close to 12 months old may be replaced soon.

If you plan to exercise, a lower 409A means a smaller tax bill on non-qualified options. For incentive options, it means a smaller spread for the alternative minimum tax, covered in 83(b) election vs AMT. The marketability discount is explained in DLOM.

Common Mistakes

• Valuing options at the preferred priceCommon shares sit behind the preference. Their value is generally lower.
• Reading the headline valuation as common valueIt multiplies the preferred price by every share, common included.
• Relying on an old 409AA value more than 12 months old, or one set before a new round, is not reasonable.
• Expecting the strike to stay lowEach round and each tender offer can lift the next 409A.

409A valuation

An independent appraisal of a private company’s common stock, used to set option strike prices.

Preferred price

The price per share investors pay for preferred stock in a funding round.

Preferred stock

Shares with extra rights, such as being paid first in a sale and converting into common.

Liquidation preference

The right of preferred holders to get their money back before common holders in a sale.

Discount for lack of marketability

A reduction in value because private shares are hard to sell.

Safe harbor

A method the 409A rules presume reasonable. The IRS can overturn it only if it is grossly unreasonable.

Strike price

The fixed price at which an option lets you buy a share.

Fully diluted shares

All shares, plus every share that options, warrants and conversions could add.

Every rule was checked against the US Code, the Treasury regulations and the IRS on November 6, 2026. They are US federal rules. The prices in the examples are illustrative and describe no real company. State tax is not covered.