What it means
The logic is that a business is worth the cash it will hand its owners over its life, adjusted for the fact that a dollar arriving in five years is worth less than a dollar today. Building the model means forecasting revenue, margins, working capital and capital expenditure, deriving free cash flow from those, and then discounting each year back to present value.
It matters because it forces explicit assumptions. A negotiation about price often turns into a negotiation about growth rates, margins and capital intensity, and the model makes each of those visible so both sides can argue about the assumption rather than the answer.
Most models use two stages. An explicit forecast period of three to five years is modelled year by year, then a terminal value captures everything beyond that horizon, typically as a perpetuity that grows at a modest long-term rate no higher than the economy as a whole.
The discount rate is the most contested input. A model valuing free cash flow to the firm discounts at the weighted average cost of capital and produces an enterprise value from which net debt is deducted, while a model valuing free cash flow to equity discounts at the cost of equity and produces the equity value directly.
The critical nuance is sensitivity. Small changes to the discount rate or terminal growth rate move the answer dramatically, and in most models the terminal value accounts for well over half the total, which is why serious analysts present a range from a sensitivity table rather than a single confident number.
In practice
Real-world examples.
Example
A corporate development team building a bid for a competitor runs a five-year free cash flow model, then tests three scenarios for customer retention. The gap between the best and worst case is wide enough that the team structures part of the price as an earn-out.
Example
An infrastructure investor uses a free cash flow model to appraise a twenty-five year toll road concession. Because the asset has a defined life, the model runs to the end of the concession and needs no terminal value at all.
Example
A founder preparing for a funding round builds a simple model to understand what growth rate would justify the valuation being discussed. Discovering that the implied assumption is 45% growth for five straight years changes how she frames the raise.
Think of it
“FCF model is your forecasting tool for projecting future free cash flow-the valuation foundation.
Formula
Calculation
In a single-stage model: Enterprise Value = Next Year Free Cash Flow / (Discount Rate - Long-term Growth Rate), then Equity Value = Enterprise Value - Net Debt
A stable facilities management company is expected to generate free cash flow of $2,400,000 next year. Its weighted average cost of capital is 10% and long-term growth is assumed at 2%, reflecting a mature market.
Enterprise Value = $2,400,000 / (0.10 - 0.02) = $2,400,000 / 0.08 = $30,000,000
The company has borrowings of $6,000,000 and cash of $1,000,000, so net debt is $5,000,000.
Equity Value = $30,000,000 - $5,000,000 = $25,000,000
With 5,000,000 shares in issue, that is $25,000,000 / 5,000,000 = $5.00 per share. Sensitivity matters: raising the discount rate to 11% would give $2,400,000 / 0.09 = $26,666,667 of enterprise value, cutting the equity value by more than $3,000,000 on a single percentage point.Case study
Seen in the real world.
Ferndale Analytics is an invented software company used here for an illustrative example. Its board received a takeover approach valuing the business at $60,000,000 and had no internal view on whether that was generous or insulting.
The finance team built a free cash flow model with a five-year explicit forecast followed by a terminal value at 2.5% long-term growth, discounted at a 12% cost of capital that reflected the company's size and customer concentration. The central case produced an enterprise value of $71,000,000, but the sensitivity table showed a range from $54,000,000 to $95,000,000 depending on churn and the discount rate.
The illustrative value of the exercise was not the single number. It was that the board could see the offer sat at the pessimistic end of a credible range, and could point to two specific assumptions, customer churn and renewal pricing, that would need to be proven wrong for the offer to be fair. Negotiations continued on those terms.
Watch out
Common mistakes.
- Treating the model's output as a precise answer rather than a range, when a one percentage point change in the discount rate can move the value by 10% or more.
- Setting a terminal growth rate above long-run economic growth, which mathematically implies the company eventually becomes larger than the whole economy.
- Mixing free cash flow to the firm with the cost of equity as the discount rate, a mismatch that produces a value which is simply wrong rather than merely debatable.
Questions
People also ask.
How long should the explicit forecast period be?
Three to five years is standard for most businesses, extended only where contracts, concessions or asset lives give genuine visibility further out.
Why does the terminal value dominate the result?
Because it represents every year beyond the forecast horizon, and for a growing company that is the large majority of its total expected cash, which is why the terminal assumptions deserve the most scrutiny.
Is a free cash flow model the same as a discounted cash flow model?
In everyday use the terms are used interchangeably, since the cash flows being discounted in a discounted cash flow valuation are almost always free cash flows.
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