Reverse Discounted Cash Flow (DCF) Calculator

Reverse Discounted Cash Flow (DCF) Calculator

* Required Field

Stock Ticker *:

Leave this field to fetch the latest price.

Current Stock Price ($) *?The market's current price for the stock. This is the target value the calculator works backward from — it solves for the growth rate that would justify this exact price.:

Latest Annual Free Cash Flow (millions) *?The company's most recent 12 months (TTM) of Free Cash Flow, i.e. Operating Cash Flow minus Capital Expenditures, expressed in millions of dollars. On Yahoo Finance, check the Statistics tab ("Levered Free Cash Flow") or the Cash Flow statement's TTM column.:

Assumed Free Cash Flow (FCF) Growth Rate (Yr 6-10) (%) *?Your assumption for how fast free cash flow grows each year for years 6 through 10, as growth typically moderates from the Yr 1-5 rate toward a more sustainable, mature-company pace. The calculator solves for the Yr 1-5 rate; this stage is held fixed as an input assumption.:

Terminal Growth Rate (%) *?The steady, long-run growth rate assumed forever after the Projection Period ends. Typically set close to long-term GDP or inflation (roughly 2-3%). Must be lower than your Discount Rate / WACC.:

Discount Rate / Weighted Average Cost of Capital (WACC) (%) *?The rate used to discount future cash flows to today's value, reflecting the company's cost of capital and risk. Pre-calculated WACC estimates are available on sites like stockanalysis.com, or can be computed from the company's cost of equity and cost of debt.:

Projection Period (Years) *?How many years of explicit cash flow forecasts to build before switching to the Terminal Growth Rate. Minimum 10 (covering the Yr 1-5 and Yr 6-10 stages). Longer periods suit early-stage or high-growth companies that take longer to mature; shorter, more reliable forecasts are generally preferred where possible.:

Assumed Free Cash Flow (FCF) Growth Rate (Yr 11 & Beyond) (%) *?Your assumption for FCF growth for every year from Year 11 through the end of your Projection Period, as growth continues fading from the Yr 6-10 rate down toward the Terminal Growth Rate. Only used if the Projection Period is set beyond 10 years.:

Shares Outstanding (millions) *:

Net Debt (millions):

Implied FCF Growth Rate (Yr 1-5): --

Current Stock Price: --

Implied vs. Assumed Yr 6-10 Rate: --

Total Enterprise Value (at Current Price): $0.00

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Reverse DCF Calculator: What It Is and How to Use It

A traditional Discounted Cash Flow (DCF) model starts with your own assumptions about how fast a company's free cash flow will grow, then tells you what the stock is worth. A Reverse DCF flips that process around. Instead of assuming a growth rate and solving for a price, it starts with the stock's current market price and solves for the growth rate the market must be assuming to justify that price.

In other words, this calculator answers the question: "How much free cash flow growth is already priced into this stock?" Once you know that number, you can decide for yourself whether it looks realistic, conservative, or wildly optimistic given the company's history, industry, and competitive position.

The Purpose of a Reverse DCF

Forward DCF models are useful, but they have a well-known weakness: small changes in your growth assumption can swing the "fair value" output dramatically, which makes it easy to unconsciously pick a growth rate that confirms whatever conclusion you already wanted to reach.

A Reverse DCF removes that bias. Rather than asking "what growth rate do I believe in," it asks "what growth rate is the current price already telling me the market believes in." This reframes valuation as a sanity check:

• If the implied growth rate looks low relative to the company's track record, the stock may be undervalued or the market may be pricing in risks not obvious from the cash flow statement alone.
• If the implied growth rate looks high relative to what the company has ever achieved, the stock may be priced for perfection, leaving little room for disappointment.
• If the implied growth rate looks roughly in line with historical and analyst expectations, the market may simply be pricing the stock fairly.

It's a way of putting the burden of proof back on the growth assumption itself, rather than on the final valuation number.

Understanding the Inputs

Each field in the calculator feeds directly into the underlying cash flow projection. Here's what each one means and where to find it:

• Stock Ticker — The company's ticker symbol. Leaving this field automatically attempts to pull the latest market price.
• Current Stock Price — The market price the calculator solves against. This is the "answer" that determines what the implied growth rate must be, so it's the anchor of the entire calculation.
• Latest Annual Free Cash Flow — The company's trailing twelve months (TTM) Free Cash Flow (Operating Cash Flow minus Capital Expenditures), in millions. This is the starting cash flow the projection grows from.
• Assumed FCF Growth Rate (Yr 6–10) — Your assumption for how growth moderates in years 6 through 10, after the initial high-growth window. This stage is held fixed as an input, since solving for every stage simultaneously would make the result ambiguous.
• Terminal Growth Rate — The permanent, steady-state growth rate assumed forever after the projection period ends, typically close to long-run GDP or inflation (around 2–3%).
• Discount Rate / WACC — The Weighted Average Cost of Capital used to discount future cash flows back to today's dollars, reflecting the company's risk and cost of capital.
• Projection Period — The number of years of explicit forecasts before the terminal value takes over. Minimum 10 years, to cover the Yr 1–5 and Yr 6–10 stages.
• Assumed FCF Growth Rate (Yr 11+) — Only shown if the projection period exceeds 10 years; your assumption for growth in that extended window.
• Shares Outstanding — Total diluted shares outstanding, in millions.
• Net Debt — Total debt minus cash and equivalents, in millions. This bridges Enterprise Value to Equity Value.

Notice what's missing compared to a forward DCF: there's no field for the Yr 1–5 growth rate. That's because it's the calculator's output, not an input.

The Formula

The underlying mechanics are the same three-stage DCF used in a standard model. Free cash flow is projected forward, discounted back to the present, and summed together with a terminal value:

Enterprise Value = Σ [ FCF_t / (1 + r)^t ] for t = 1 to n, plus Terminal Value / (1 + r)ⁿ

where the Terminal Value uses the Gordon Growth Model:

Terminal Value = [ FCF_n × (1 + g_terminal) ] / (r − g_terminal)

Equity Value is then Enterprise Value minus Net Debt, and Intrinsic Value Per Share is Equity Value divided by Shares Outstanding.

In a forward DCF, you plug in a Yr 1–5 growth rate (g₁) and solve directly for the per-share value. In a Reverse DCF, the per-share value is fixed — it's set equal to the current market price — and the calculator instead searches for the value of g₁ that makes the equation balance. Because intrinsic value increases steadily as g₁ increases, this can be solved reliably using a numerical search technique called bisection: the calculator repeatedly narrows a range of possible growth rates, checking at each step whether the resulting valuation lands above or below the market price, until it converges on the single growth rate that reproduces it.

Worked Example

Suppose a hypothetical company, XYZ Corp, has the following figures:

• Current Stock Price: $121.58
• Latest Annual Free Cash Flow: $500 million
• Assumed FCF Growth Rate (Yr 6–10): 6%
• Terminal Growth Rate: 2.5%
• Discount Rate / WACC: 9%
• Projection Period: 10 years
• Shares Outstanding: 100 million
• Net Debt: $0

Feeding these into the calculator, the bisection search tests candidate Yr 1–5 growth rates until the resulting intrinsic value per share converges on $121.58. In this case, it converges at approximately 10.0%.

That means the market is currently pricing XYZ Corp as if its free cash flow will grow around 10% per year for the next five years, before moderating to 6% and eventually 2.5% in perpetuity. An investor can now ask a much more concrete question: is 10% annual FCF growth for five straight years a reasonable expectation for this business, based on its history and industry? If the company has consistently grown FCF in the mid-teens, the price might look conservative. If it's historically grown FCF in the low single digits, the price is baking in a significant acceleration that may or may not materialize.

Frequently Asked Questions

1. Why does the calculator only solve for the Yr 1–5 growth rate, and not all three growth stages?
Solving for every stage simultaneously would leave infinite combinations that all produce the same price, since a lower Yr 1–5 rate could always be offset by a higher Yr 6–10 or terminal rate. Holding the later stages fixed as assumptions gives a single, unambiguous answer for the near-term rate.

2. What does it mean if the calculator says the result is "outside solvable range"?
It means that even at extreme growth assumptions (roughly −99% to +500% annually), the model can't reproduce the current price given your other inputs. This usually points to an input that needs a second look — often the Discount Rate, Net Debt, or Shares Outstanding — rather than a literal signal about the stock.

3. Is a high implied growth rate always a bad sign?
Not necessarily. Some businesses genuinely can sustain high growth for years. A high implied rate is a prompt to check the assumption against the company's actual track record and competitive position, not an automatic red flag.

4. How is this different from just looking at the P/E or P/FCF ratio?
A simple multiple tells you how expensive a stock is relative to a single year of earnings or cash flow, but it doesn't say what growth assumption is embedded in that multiple. A Reverse DCF translates the price into an explicit, comparable growth expectation, which is easier to reason about than a bare multiple.

5. Can I use this for companies with negative or highly volatile free cash flow?
The model requires a positive starting Free Cash Flow figure, since growth rates are applied multiplicatively to it. For companies with negative or erratic FCF, results will be unreliable regardless of the growth rate solved for, and a different valuation approach is usually more appropriate.

Disclaimer

This calculator and the accompanying explanations are provided for educational and illustrative purposes only. They do not constitute financial, investment, tax, or legal advice, and nothing here should be interpreted as a recommendation to buy, hold, or sell any security. Discounted Cash Flow analysis, including its reverse form, relies on simplifying assumptions and long-term projections that are inherently uncertain; small changes in inputs such as the discount rate or growth assumptions can produce materially different results. Always verify figures against primary sources (company filings, investor relations pages, or reputable financial data providers) and consider consulting a licensed financial advisor before making investment decisions.