What Is Fair Value? Definition and How to Calculate It

Search Fintrev

Search our guides, reviews and glossary.

Fair value is the price at which an asset would change hands, or a liability would be settled, between a willing buyer and a willing seller who are informed, unrelated and under no pressure to trade. In accounting, it has a narrow technical definition: the price that would be received to sell an asset, or paid to transfer a liability, in an orderly transaction between market participants on the measurement date. In investing and trading, the phrase is used more loosely for an estimate of what a stock, future or other asset should be worth, which may differ from its traded price. When an accountant marks a listed share to fair value, the answer is usually the quoted price; when an analyst gives a stock a fair value, the figure is a model output.

Two Meanings of Fair Value

Accounting fair value is a measurement rule. A company holding bonds, a derivative contract or an investment property reports them at what they could be sold for today, not at what was paid. Accounting standards (IFRS 13 internationally, ASC 820 in the US) define it as an exit price and frame it from a market participant’s perspective, not the company’s own view of the asset. It is often called mark-to-market accounting, because the carrying amount is updated to current market levels at each reporting date.

Investment fair value is an estimate. Equity analysts calculate one for a stock from expected cash flows, growth and risk; futures traders calculate one for an index contract from the cash index, interest rates and dividends. Either way, it is a benchmark for judging whether the traded price is high or low.

Fair Value in Accounting

The conditions behind a fair value measurement

A price only counts as fair value when the transaction behind it meets certain conditions:

• Current market: The measurement reflects conditions on the measurement date, not what the asset fetched in the past.
• Orderly, voluntary transaction: Neither party is forced to trade, so liquidation or fire-sale prices are not fair value.
• Arm’s-length parties: The buyer and seller are independent. A sale to a relative, a business partner or a related company can carry a price shaped by the relationship.
• Market participant view: The price is what typical buyers in the principal (or most advantageous) market would pay, not what this particular company hopes to receive.

Because fair value is an exit price, transaction costs are not added to it. If an asset is held for sale or tested for impairment, standards often use fair value less costs to sell, which subtracts the selling costs separately.

The fair value hierarchy

Accounting standards rank the inputs used to measure fair value by how observable they are:

1. Level 1: Quoted prices in active markets for identical assets or liabilities, such as a share listed on a major exchange.
2. Level 2: Observable inputs other than Level 1 quotes, such as prices for similar assets, interest rate curves or quotes from less active markets.
3. Level 3: Unobservable inputs, meaning the company’s own assumptions, used when no market data exists. Private company stakes, complex derivatives and some real estate fall here.

Companies disclose how much of their fair value measurements sit in each level. A balance sheet dominated by Level 3 assets relies heavily on management’s models, which is why investors read those disclosures closely.

Valuation approaches

When a quoted price is not available, three approaches are used to determine fair value:

• Market approach: Uses prices from actual transactions in identical or comparable assets.
• Income approach: Converts expected future cash flows or earnings into a single present value, most often through discounted cash flow analysis.
• Cost approach: Estimates what it would cost to replace the asset’s service capacity, adjusted for wear and obsolescence.

Where fair value shows up in financial statements

Fair value accounting applies to many financial instruments, including derivatives and securities held for trading. In business combinations, an acquired subsidiary’s identifiable assets and liabilities are recorded at fair value on the acquisition date in the consolidated statements, and any excess of the purchase price goes to goodwill.

How to Calculate Fair Value

There is no single fair value formula. The right method depends on what is being valued.

Fair value of a stock index futures contract

A futures buyer gets exposure to the index without paying for the stocks up front, so the futures price should reflect the interest the buyer saves (the cost of carry) minus the dividends the buyer gives up by not owning the shares. The standard formula is:

Fair Value = Cash × (1 + r × (x ÷ 360)) − Dividends

Where:

• Cash = the current value of the index (or underlying security)
• r = the financing interest rate
• x = the number of days remaining until the contract expires
• Dividends = the value of dividends expected to be paid on the underlying before expiration, in index points

Hypothetical example: An index stands at 5,000, the financing rate is 5%, the contract has 90 days to expiry, and expected dividends over that period are worth 15 index points.

• Financing factor: 1 + 0.05 × (90 ÷ 360) = 1.0125
• Cash carried forward: 5,000 × 1.0125 = 5,062.5
• Fair value: 5,062.5 − 15 = 5,047.5

The contract’s fair value is 47.5 points above the cash index. A trade at 5,060 would be rich relative to fair value; at 5,035, cheap. Index arbitrage traders watch this spread, since buying the cheaper side and selling the more expensive side can lock in the difference, before costs. This is why pre-market commentary on index futures, including those on the S&P 500, describes futures as trading “above” or “below fair value.”

This cost-of-carry logic, sometimes called fair price theory, assumes traders can borrow and lend at the stated rate and that dividend forecasts are accurate. When those assumptions slip, so does the calculated figure.

Fair value of options and other derivatives

A derivative’s fair value comes from its underlying asset: if a stock rises, a call option on it rises in value too. Exchange-traded options have quoted prices; over-the-counter contracts are valued with pricing models that use the underlying price, volatility, time and interest rates.

Fair value of a stock with the dividend discount model

For a company with steady, growing dividends, the Gordon growth model gives a simple estimate:

P = D₁ ÷ (r − g)

Where:

• P = estimated value per share today
• D₁ = expected dividend over the next year
• r = the investor’s required rate of return
• g = the constant expected dividend growth rate

Hypothetical example: A company is expected to pay $2.10 per share next year, dividends are expected to grow 4% a year, and the investor requires a 9% return. The estimate is $2.10 ÷ (0.09 − 0.04) = $42.

The result is very sensitive to the gap between r and g: at a 10% required return, the estimate drops to $35. The model only works when r is greater than g and growth is plausibly constant, which rules it out for many fast-growing or non-dividend-paying companies. For those, analysts discount projected free cash flows, often at the company’s weighted average cost of capital, and sum the results as a net present value.

Fair value of a physical asset using comparables

Hypothetical example: A construction company bought a truck for $20,000 three years ago and now wants to measure it at fair value. Two comparable used trucks are listed at $12,000 and $14,000. Using the market approach, the company estimates fair value at the average of $13,000. The original $20,000 cost plays no role.

If no comparable sales exist, the company might instead estimate the cash the truck will generate over its remaining useful life and discount it (income approach), or estimate what a replacement of similar age and condition would cost (cost approach).

How Investors Use Fair Value

In investing, fair value is the price at which an investor believes the expected growth and returns are adequately paid for. The decision rule is straightforward:

• If a stock’s estimated fair value is $100 and it trades at $95, the investor may view it as undervalued and consider buying.
• If it trades at $120, the price exceeds the estimate, and the investor may pass or consider selling.

Some research providers express this as a price/fair value ratio: market price divided by the fair value estimate. Below 1.0, the stock trades under the estimate; above 1.0, over it. The ratio inherits every assumption in the estimate, so two providers can give the same stock very different readings.

The fair value gap

Short-term traders use “fair value gap” for a brief mismatch between a stock’s price and the level they consider fair, often caused by a temporary imbalance between buyers and sellers after news. They trade on the expectation that the price will move back toward that level. In chart-based trading, the term also means a price zone the market moved through quickly, leaving little trading activity. Either way, it is a trading concept, separate from accounting fair value.

Fair Value vs. Related Terms

Fair value vs. market value

Market value is the observed price at which an asset actually trades. It is driven by supply and demand and can change minute to minute.

Fair value, in its investment sense, is an estimate of what the asset is worth based on factors such as growth potential, risk and replacement cost. For a listed stock, the market price is what someone will pay right now; the estimate is what an investor thinks the business is worth. Estimates change more slowly than prices, which is what makes them useful as a reference point.

In accounting, the distinction narrows: for an asset with a Level 1 quote, fair value is the market price. The two diverge mainly where active markets are absent or where an analyst’s model is involved.

Fair value vs. intrinsic value

Intrinsic value is an asset’s worth based on its fundamentals, usually the present value of its future cash flows, regardless of market sentiment. Investment fair value estimates are often built on intrinsic value models such as the dividend discount model above. Accounting fair value instead takes a market participant’s view rather than the holder’s own assessment of fundamentals.

Fair value vs. historical cost

Historical cost accounting records an asset at its original purchase price, adjusted for depreciation or impairment, and does not raise the value when prices rise. Fair value accounting restates the asset to its current exit price. Historical cost is easier to verify and harder to manipulate; fair value is more current. In the truck example, historical cost starts at $20,000 and depreciates on the company’s schedule, while fair value follows today’s used truck market.

Fair value vs. book value and enterprise value

Book value is the accounting carrying amount on the balance sheet, which may mix historical cost and fair value items. Enterprise value is a market-based measure of a whole company’s equity plus net debt. Neither is a fair value estimate in itself, though both are used alongside one.

Why Fair Value Is Used

• Current information: Reported asset values move with the market rather than staying fixed at purchase cost.
• Adaptability: It applies to almost any asset or liability, including instruments with no meaningful historical cost, such as many derivatives.
• Recognition of declines: It forces write-downs when an asset has lost value, rather than leaving an overstated cost on the books.

How the SEC Regulates Fair Value for Funds

In 2020, the Securities and Exchange Commission adopted Rule 2a-5 under the Investment Company Act of 1940. Registered funds must value portfolio securities at market value when market quotations are “readily available.” When they are not, or when the investment is not a security, the fund must use fair value determined in good faith.

The fund’s board is responsible for these determinations but may designate a valuation designee (often the fund’s adviser) to perform them under board oversight. Good faith requires assessing and managing valuation risks, establishing, applying and testing fair value methodologies, and evaluating pricing services. As a result, a fund’s net asset value can include holdings priced by these methods rather than by an exchange quote.

Limitations of Fair Value

• Model dependence: Without an active market, fair value rests on assumptions about cash flows, discount rates and growth. Small changes produce large swings, as the dividend model example showed.
• Subjectivity in Level 3: Unobservable inputs come from management, leaving room for optimistic or inconsistent estimates.
• Earnings volatility: Unrealized gains and losses flow into reported results, even if the company has no plan to sell.
• Stressed markets: When markets freeze, observed prices may reflect forced sales rather than orderly transactions. During the 2008 financial crisis, critics argued that mark-to-market rules deepened losses by forcing write-downs at depressed prices, and standard setters issued additional guidance on measuring fair value in inactive markets.

FAQs

The Bottom Line

Investors, analysts and anyone reading company accounts or fund reports benefit from knowing which fair value they are looking at. A Level 1 accounting figure is simply the market price, while an analyst's estimate or a Level 3 measurement depends on models and assumptions. Check the inputs before relying on any fair value, since small changes in rates or growth can move the result sharply.