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Intrinsic Value and DCF: What a Stock Is Really Worth

Intrinsic value is the real worth of a business based on its future cash flows. We explain discounted cash flow (DCF), the key assumptions that drive it, and its limits.

ValuationDCFIntrinsic ValueFundamental Analysis

Market price is not the same as value

A stock price is what the market is paying. Intrinsic value is what the business is actually worth. These two numbers often diverge — and that gap is where opportunity (or risk) lives. The most common way to estimate intrinsic value is discounted cash flow (DCF).

The core idea of DCF

A business is worth the sum of all the cash it will generate in the future, brought back to today value. Why bring it back to today? Because 1 dollar next year is not worth 1 dollar today — money has a time cost (inflation, risk, other opportunities). Reducing future cash flows to present value is called discounting.

Three steps:

  1. Project free cash flow for the years ahead (see free cash flow).
  2. Choose a discount rate that reflects risk and cost of capital.
  3. Bring everything back to today and add it up to get the estimated intrinsic value.

Divide by shares outstanding and you get intrinsic value per share. Compared with the market price: far lower may mean cheap; higher may mean expensive.

Assumptions drive the result

DCF is strong in theory but sensitive to assumptions:

  • Cash flow growth rate: even a few percent off changes the result a lot.
  • Discount rate: slightly higher and value falls sharply.
  • Terminal value: usually the bulk of the result and the hardest part to predict.

The familiar saying: "garbage in, garbage out." A DCF is only as accurate as your assumptions.

Using DCF wisely

  • Use scenarios, not a single number: compute value under conservative, base, and optimistic cases rather than trusting one figure.
  • Combine with multiples: cross-check against P/E and EV/EBITDA.
  • Demand a margin of safety: only buy when price is below intrinsic value by a buffer — that is the margin of safety.
  • Favor predictable businesses: DCF suits companies with steady cash flow and a durable competitive advantage more than volatile startups.

Limits to remember

DCF does not work well for businesses without positive cash flow yet, or for fast-changing industries. For those, relative valuation (comparing multiples) is usually more practical. DCF is a thinking tool, not a crystal ball.

Conclusion

Intrinsic value answers the core question of value investing: how much is this business really worth? DCF brings future cash flows back to today to estimate that figure. Treat it as a value range based on explicit assumptions, always keep a margin of safety, and do not confuse spreadsheet precision with certainty about the future.

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