DCF vs Reverse DCF: Which One Should You Run First?

Both models run the same math. They solve for different variables. A DCF projects future cash flows and solves for fair value. A reverse DCF starts with the market price and solves for the growth rate already baked in. One asks what the stock is worth; the other asks what the market already expects.

Use the DCF calculator to see fair value and implied growth on the same stock.

DCF vs Reverse DCF at a Glance

Dimension	DCF	Reverse DCF
Starts with	FCF forecast and discount rate	Current stock price
Solves for	Fair value per share	Implied FCF growth rate
Question answered	What is this stock worth?	What does the market already expect?
Typical user	Sell-side analysts, quality investors	Activists, GARP, screeners
Classic advocate	Aswath Damodaran	Mauboussin and Rappaport
Fails when	Cash flows aren't forecastable	Current FCF is zero or negative

Both methods use the same inputs: free cash flow, discount rate, terminal growth, and a projection window. The only thing that flips is which variable you treat as given and which you solve for.

What a DCF Does

A standard discounted cash flow valuation projects free cash flow year by year, discounts each year back to today using WACC, and adds a terminal value that captures everything beyond the explicit forecast. Sum the present values, subtract net debt, divide by shares outstanding, and the output is fair value per share.

Compare that number to the market quote. Above the quote, the model calls the stock undervalued. Below, overvalued.

Limitation: A DCF needs a forecast for every year in the projection window. For early-stage firms, cyclicals at trough, or businesses facing disruption, that forecast is a guess. The answer is precise but rarely accurate. Two analysts working from the same financials can produce fair values that differ by 30% or more.

What a Reverse DCF Does

A reverse DCF flips the equation. Equity value is already fixed by the market: price multiplied by shares outstanding. Add net debt for enterprise value. Then solve for the FCF growth rate that, under a chosen discount rate and terminal growth, produces that enterprise value.

The output is the growth rate already baked into the price. If the number is 20% and the company has never grown FCF faster than 10%, the market is pricing in an acceleration that needs justification. If the number is 3% and recent growth is 15%, the market is pricing in a slowdown.

Limitation: If current FCF is zero or negative, there is no base to project from. The method breaks on negative FCF businesses, pre-profit SaaS, biotech, and turnarounds. Run the reverse DCF calculator on any profitable stock to see its implied growth rate.

When to Use Each

Scenario	Better method	Why
Stable business with steady FCF	DCF	Forecast is defensible; fair value is actionable
High-multiple growth stock	Reverse DCF	Reveals whether implied growth is ever realistic
Pre-profit or unprofitable	Neither alone	Switch to revenue multiples or peer analysis
Activist or variant-perception thesis	Reverse DCF	Exposes the market's bet so you can attack it
Quality compounder check	Reverse DCF first	Sets the bar; DCF only if you disagree with it
Sell-side price target	DCF	Convention, even though analysts rarely trust output
Quick screen across 50 stocks	Reverse DCF	Implied growth is comparable across the whole list

Use DCF when: You have a defensible forecast and want fair value per share to compare against the market quote.

Use reverse DCF when: You want to know what the market already expects and whether your view is meaningfully different.

The Workflow: Pairing Both

Treating DCF and reverse DCF as rivals misses the point. They solve for different parts of the same equation, and serious practitioners use both.

Michael Mauboussin, co-author of Expectations Investing, runs reverse DCF first. The market price produces an implied growth rate. Compare that number to the company's own history, industry growth, and total addressable market. Mauboussin frames the work as clearing a hurdle:

The first skill is determining how high the bar is set. The second skill is judging how high the jumper can leap.

The bar is the implied growth rate; the jumper is the business. Reverse DCF tells you the first. Judgment tells you the second.

If the implied rate is clearly unrealistic, run a forward DCF only to size the mispricing. Most of the time, reverse DCF alone is enough to disqualify an idea or flag it for deeper work. Sell-side analysts reverse the order and start with DCF, though research shows they rarely trust their own outputs and set price targets on multiples anyway.

Neither method is a verdict. DCF gives you a number that feels precise. Reverse DCF gives you a number that feels uncomfortable. Both are inputs to judgment.

Open the DCF calculator to run fair value and implied growth side by side on any profitable stock.

Frequently Asked Questions

Which should I run first, DCF or reverse DCF? Start with reverse DCF. It reveals the growth rate the market already expects, which tells you whether your view differs enough to justify a full model. If the implied rate matches your own estimate, there is no edge. Build a forward DCF only when you disagree with the market.

Is reverse DCF more accurate than DCF? No. Both methods use the same inputs: discount rate, terminal growth, and projection window. Reverse DCF just flips which variable is the output. Garbage assumptions in, garbage implied growth out. The market price anchors one end, but the other inputs are still subjective.

Can I use reverse DCF on unprofitable companies? Not directly. Reverse DCF needs a positive current free cash flow to project from, so it breaks on negative-FCF businesses. For pre-profit firms, neither method works cleanly. Revenue multiples, peer comparisons, or scenario-based models with explicit profitability milestones are the usual substitutes.

Does Warren Buffett use DCF? Not formally. Munger once remarked he had never seen Buffett do a spreadsheet DCF. Buffett prefers rough intrinsic-value estimates using the 30-year Treasury yield as a discount rate. Both have mocked forecasts projecting 15 years of cash flows as "illusory certainty" rather than useful analysis.