How to Calculate the Intrinsic Value of a Stock (5 Methods Explained)

Warren Buffett has said that investing is simple but not easy. At the center of his philosophy — and the philosophy of his mentor Benjamin Graham — is one foundational idea: a stock has an intrinsic value, and the market price is not always the same thing.

Graham described the market as a voting machine in the short run and a weighing machine in the long run. Understanding what a stock actually "weighs" — its intrinsic value — is the whole game. Every serious long-term investor needs at least one reliable method to estimate it.

This guide walks through five proven approaches: Discounted Cash Flow (DCF), the Graham Number, Earnings Power Value (EPV), the Dividend Discount Model (DDM), and Net Asset Value (NAV). Each method is explained with a formula and a worked example using realistic numbers. A comparison table at the end helps you match the right method to the right type of stock.

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What Is Intrinsic Value?

Intrinsic value is the estimated worth of a business based on its fundamentals — earnings, cash flow, assets, and growth — independent of what the market currently prices its shares at. It is not a precise number. It is a model output, and every model depends on assumptions.

The purpose is not to find an exact price. The purpose is to determine whether a stock is trading meaningfully above or below a reasonable estimate of what the underlying business is worth. That gap — when present and wide — is where Graham's concept of margin of safety lives.

Intrinsic value is always expressed as a range, not a point. Any tool or formula that gives you a single number is giving you one scenario, not a fact.

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Method 1: Discounted Cash Flow (DCF)

Best for: Profitable companies with predictable free cash flow — large-cap industrials, consumer staples, technology businesses with established margins.

The Intrinsic Value Formula

The DCF model estimates intrinsic value by projecting future free cash flows and discounting them back to present value using the Weighted Average Cost of Capital (WACC).

Where:

• FCF_t = Free cash flow in year t
• WACC = Discount rate (cost of capital)
• g = Long-term growth rate (terminal)
• n = Projection period (typically 5–10 years)

Worked Example

Assume a company generates $10.00 per share in free cash flow this year. You project 8% annual FCF growth for five years, then assume a 3% terminal growth rate, and use a 10% WACC.

Year	FCF	Discount Factor	PV of FCF
1	$10.80	0.909	$9.82
2	$11.66	0.826	$9.63
3	$12.59	0.751	$9.46
4	$13.60	0.683	$9.29
5	$14.69	0.621	$9.12

Sum of PV (Years 1–5): $47.32. Terminal Value PV: $134.22. DCF Intrinsic Value = $181.54 per share.

If this stock is trading at $140, the model estimate suggests it may be trading below the modeled fair value — a potential margin of safety of roughly 23% under these assumptions.

Use our free DCF calculator to run these numbers on any ticker in seconds.

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Method 2: Graham Number

Best for: Value screens on profitable companies — a quick filter for potential undervaluation among mid- and large-cap stocks with consistent earnings.

Benjamin Graham developed a simple intrinsic value formula that incorporates both earnings power and book value:

Graham Number = √(22.5 × EPS × Book Value per Share)

The constant 22.5 comes from Graham's rule of thumb: no more than 15× earnings and no more than 1.5× book value.

Worked Example

A company reports EPS of $4.50 and Book Value per Share of $32.00:

Graham Number = √(22.5 × $4.50 × $32.00) = √($3,240) = $56.92

If the stock is trading at $44, it is below the Graham Number. If it trades at $72, it is above — not necessarily overvalued, but outside the range Graham considered conservative.

Try our Graham Number calculator for any stock.

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Method 3: Earnings Power Value (EPV)

Best for: Mature companies where growth is uncertain — when you want to value only what the business earns today, with no growth premium baked in.

EPV was formalized by Columbia professor Bruce Greenwald. It strips away growth assumptions entirely.

EPV per Share = (Adjusted EPS / WACC) + Excess Cash per Share − Debt per Share

Worked Example

A company earns $6.00 per share in normalized after-tax earnings, holds $3.00 in net cash, and you apply a 9% WACC:

EPV = ($6.00 / 0.09) + $3.00 = $69.67 per share

EPV is a floor estimate. If a stock trades below its EPV, the model suggests you are compensated with zero growth. Paired with a DCF, the gap between EPV and DCF represents the "growth premium" the market is pricing in.

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Method 4: Dividend Discount Model (DDM)

Best for: Dividend-paying stocks with stable, long-term payout histories — utilities, consumer staples, REITs, large-cap financials.

Gordon Growth Model: Intrinsic Value = D1 / (r − g)

Where D1 = next year's dividend, r = required return, g = long-term dividend growth rate.

Worked Example

A utility stock pays a $2.40 annual dividend, grows dividends at 3% per year, and your required return is 7%:

D1 = $2.40 × 1.03 = $2.47. Intrinsic Value = $2.47 / (0.07 − 0.03) = $61.75 per share

Key limitation: The DDM is extremely sensitive to the r−g spread. A 1% change in either input can dramatically swing the intrinsic value estimate.

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Method 5: Asset-Based Valuation / Net Asset Value (NAV)

Best for: Banks, insurance companies, REITs, and holding companies where the balance sheet drives value.

NAV per Share = (Total Assets − Total Liabilities) / Shares Outstanding

For REITs, adjust for market value of properties rather than depreciated book value.

Worked Example

A REIT holds properties worth $2.8 billion, liabilities of $1.1 billion, other assets of $80 million, and 90 million shares outstanding:

NAV = ($2,800M − $1,100M + $80M) / 90M = $19.78 per share

If the REIT trades at $16.50, it trades at approximately a 17% discount to NAV under these asset estimates.

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Which Method Should You Use?

Method	Best Fit	Avoid When
DCF	Profitable growth companies with predictable free cash flow	Early-stage, negative cash flow, or highly cyclical businesses
Graham Number	Simple value screens on profitable stable businesses	Growth stocks, negative book value, or financial firms
EPV	Mature companies where growth assumptions are unreliable	High-growth businesses or asset-heavy firms
DDM	Dividend payers with stable multi-year payout history	Non-dividend or minimal-payout companies
NAV	Banks, REITs, holding companies	Operating businesses with intangible-heavy assets

Professional analysts typically run two or three methods and look at the range. Use our intrinsic value calculator to run multiple methods simultaneously on any stock.

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Margin of Safety: Why You Never Pay Full Intrinsic Value

Even if your model is exactly right — which it never is — paying the full estimated intrinsic value leaves no room for error.

Margin of Safety = (Intrinsic Value − Market Price) / Intrinsic Value × 100

Investor Style	Typical Margin of Safety Target
Conservative (Graham-style)	33–50%
Moderate (quality-focused)	20–30%
Aggressive / high model confidence	10–15%

Calculate your margin of safety with our margin of safety calculator.

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Limitations of Intrinsic Value Models

Every model is wrong. Some models are useful. Key risks:

1. Garbage in, garbage out — small changes in WACC or growth rate swing DCF results by 30–50%. Always stress-test inputs across conservative, base, and optimistic scenarios.

2. Accounting quality — EPS and book value can be distorted by one-time items and aggressive revenue recognition. Use normalized earnings, not raw GAAP figures.

3. Growth rate uncertainty — terminal growth assumptions dramatically inflate fair value estimates. Higher terminal growth assumptions deserve corresponding skepticism.

4. Discount rate subjectivity — WACC requires estimating cost of equity, which is itself a model estimate. A 1% difference in WACC can change a DCF result by 15–25%.

5. Models price the business, not the stock — a stock can trade below model fair value for years. Valuation is not a catalyst. The market can remain mispriced relative to any model for longer than expected.

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Run the Calculations Yourself — Free Tools

Equity Rank's free calculators are built for exactly this work:

• Free DCF Calculator — Project cash flows, set your WACC and growth rate, get an instant model estimate for any stock.
• Intrinsic Value Calculator — Run all five methods side by side on any ticker and see the full range of model estimates.
• Margin of Safety Calculator — Input your model estimate and the current price to quantify your cushion.
• Graham Number Calculator — Two inputs. Instant Graham Number.

For investors who want a complete picture — 19+ valuation methods, AI-generated narrative, and options analysis — start a 7-day free trial of Equity Rank.

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This content is for educational purposes only and does not constitute investment advice. Equity Rank is not a registered investment adviser. All model outputs are for informational purposes only.