Equity management
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Fair market value is a reasonable, unbiased estimate of the price an asset would sell for on the open market. For company stock, it is the price a willing buyer and a willing seller would agree on, assuming neither is forced to act and both have reasonable knowledge of the relevant facts. This follows the arm's length principle, where the parties are unrelated and each acts in its own interest.
If a company is publicly traded, its share price is easy to observe because the market sets it continuously. A private company has no such market, so it cannot simply look up a price.
The IRS-recognized way to determine fair market value for a private company is a 409A valuation performed by a qualified, independent third-party appraiser. Running one regularly keeps option grants compliant and fairly priced. Have more questions? Get all the answers about 409A Valuation in our detailed guide.
A valuation is usually done once a year, and again after any material event that could move the company’s value, such as funding rounds, mergers, or major changes in structure or market conditions. Appraisers apply three core approaches.
Fair market value becomes a number through a few standard formulas. Understanding the mechanics shows what actually drives the result before you engage an appraiser.
A discounted cash flow projects future cash flows and discounts each back to today at a rate that reflects risk, commonly the weighted average cost of capital. The core formula is:
Present Value = sum of [ Cash Flow in year t / (1 + r)^t ] + Terminal Value
where r is the discount rate and t is the year. For example, $10 million of free cash flow next year, discounted at 20%, contributes $10 million / 1.20, or about $8.33 million, before terminal value and later years are added.
Apply a valuation multiple from comparable companies to your own metric. If comparable software companies trade at 6x revenue and your revenue is $10 million, the implied enterprise value is roughly $60 million.
Implied Value = Company Metric × Comparable Multiple
Net the fair value of assets against liabilities.
Net Asset Value = Fair Value of Assets minus Liabilities
An appraiser then allocates the total value across share classes using a model such as the Option Pricing Method or the Probability-Weighted Expected Return Method, and applies a discount for lack of marketability and, where relevant, a discount for lack of control to reach the common-stock figure. To prepare, gather a current cap table, financials and projections, and recent financing terms.
Read More: 409A valuation methodology and process
The concept of FMV becomes particularly important when the need to issue stock options to employees and contractors arises. Employee stock options grant recipients the right to buy a specific number of shares in the company at a fixed price (strike price) within a set period.
The Internal Revenue Service (IRS) rules specify that the strike price cannot be lower than the FMV established through a qualified valuation. This ensures fairness for both your company and the option recipient. It also prevents the undervaluation of your company's stocks, protects your company's interests, and ensures that the option recipients are not overpaying for the stocks.
Understanding and accurately determining the FMV is crucial when issuing stock options. It helps maintain compliance with tax regulations specified under the Internal Revenue Code (IRC) Section 409A.
Read More: How much a 409A valuation costs
Several elements move the fair market value of a private company's stock. An appraiser weighs each one rather than relying on a single number.
The total value of everything the company owns, from tangible assets such as property, equipment, and inventory to intangible assets such as patents, trademarks, and goodwill. A higher asset value usually ensures a higher FMV for your enterprise.
This is the present value of your company's expected future earnings. It involves forecasting your company's cash flows and discounting them to the present value using an appropriate discount rate. If your company's future cash flows are expected to be strong, it will ensure a higher FMV for your stock.
A comparison against similar businesses on revenue, margins, growth, and risk. When the company performs well against its peers, that lifts the fair market value.
Ownership stakes the company holds in other businesses. If those companies do well, the value of those holdings and any related preferred shares grows, which raises the fair market value.
The FMV of a company's stock must comply with the guidelines specified in Section 409A of the IRC. When it comes to the fair market value for tax purposes, the IRS closely monitors the 409A valuation process, and any discrepancy in the appraisal report can invite scrutiny.
If the IRS rejects the valuation, it can have serious consequences. For instance, if the fair market value of the stock options granted to the employees is found to be understated, they might end up owing income tax on the difference between the strike price and the actual FMV.
The IRS provides a safe harbor provision to protect your company and employees from such incidences. If the corporation's FMV is established through a qualified 409A valuation, the IRS is less likely to challenge it. Moreover, as per safe harbor rules, the IRS must provide proof of any objection to the valuation to justify an audit.
An accurate, fair market value of a business also significantly affects investment decisions. Potential investors and acquirers rely on the FMV to assess the accuracy of your company's worth. An overestimated FMV might deter investors, while an underestimated one could result in a loss of potential capital for you.
See our 409A safe harbor guide for the full conditions.
Fair market value and fair value sound interchangeable, but they are two different standards used for two different purposes. Confusing them leads companies to assume one valuation satisfies both tax and accounting, which is rarely true.
Fair market value is the tax standard. It is the IRS willing-buyer, willing-seller price, and it governs tax matters such as the strike price of stock options under Section 409A. It permits valuation discounts, including those for lack of marketability and lack of control.
Fair value is the accounting standard. Under US GAAP, fair value is the price to sell an asset or transfer a liability in an orderly transaction between market participants at the measurement date, an exit price. It governs financial reporting, such as stock-based compensation expense under ASC 718 and fund portfolio valuations under ASC 820.
Fair market value (the tax standard) compared with fair value under ASC 820.
Both are usually estimated with the same underlying approaches, so they draw on the same analysis. They diverge because the standard of value, the assumed transaction, and the discounts allowed are different, which means the same company can carry one number for tax and a different number for reporting.
Fair market value is the estimated price a stock would fetch in a fair, informed market. Real market value (RMV) is the actual price a share sells for given current conditions and investor sentiment.
Fair market value is a theoretical value under ideal conditions, while real market value is the practical price seen in a live transaction. The two can align, but they often diverge because of market conditions, economic factors, and specific supply and demand.
Fair market value drives the tax outcome of equity compensation. Employee stock options let a recipient buy shares at a fixed strike price, and that strike price must be at least the fair market value at grant to stay onside with Section 409A.
The tax treatment then depends on the award type. Incentive stock options (ISOs) can qualify for favorable capital-gains treatment when statutory rules are met. Non-qualified stock options (NSOs) are generally taxed as ordinary income at exercise on the spread between the strike price and the fair market value.
When a strike price sits below fair market value and no safe harbor applies, the consequences fall largely on employees: immediate income inclusion on the spread, an additional 20% federal tax, and interest. Always confirm treatment with a qualified tax advisor, and manage grants with stock options backed by a current valuation.
Getting a 409A valuation right can feel like a lot to manage on your own, especially when you're already juggling a dozen other things as a founder. That's where Qapita comes in, we support over 2,800 clients with equity management tools and expert-led valuations that set and maintain a defensible fair market value at every stage of your company's growth.
Our team puts together valuation reports tailored to your company, so the numbers actually reflect your startup's worth, and we stay aligned with recognized standards like IGAAP, IFRS, and SFRS, so you never have to second guess whether you're compliant.
See how Qapita's expert-led 409A valuations set a fair market value that holds up with the IRS. Book a demo.
Fair market value is the price a willing buyer and a willing seller would agree on for an asset, with neither forced to act and both reasonably informed. For stock, it is the per-share price in a fair, open market.
Appraised value is a professional appraiser's opinion based on set criteria. Fair market value is the price a willing buyer and seller agree on in an open market. Appraisals may include potential or unique features that do not influence fair market value.
Appraisers use three approaches: income (discounted future cash flows), market (multiples from comparable companies), and asset-based (assets minus liabilities). For private stock, a 409A valuation combines these, then applies discounts to reach a per-share value.
There is no single formula. The income approach uses present value of cash flows discounted at a risk rate; the market approach multiplies a company metric by a comparable multiple; the asset approach nets asset value against liabilities.
