Why terminal value dominates a DCF

In the illustrative DCF below, 74.7% of enterprise value comes from cash flows after the five-year forecast. Raising perpetual growth from 3% to 4%, with the other assumptions held constant, increases enterprise value from $1,468.3 million to $1,663.4 million. The useful question is what economic assumptions produce that dependence, rather than whether the terminal share crosses an arbitrary threshold.

Build the calculation from explicit inputs

This is an original sensitivity calculation, not a valuation of a listed company. Assume annual unlevered free cash flow of $80 million, $90 million, $100 million, $110 million and $120 million in years 1 through 5. Cash arrives at each year-end. The assumed weighted average cost of capital, or WACC, is 10%; cash flow grows at 3% annually after year 5. Cash flows and rates use the same nominal currency basis.

Discount each explicit cash flow by (1 + WACC) raised to its year. Their combined present value is $371.9 million. Terminal value at the end of year 5 is year-6 cash flow divided by WACC less perpetual growth: $120 million × 1.03 ÷ (0.10 − 0.03) = $1,765.7 million. Discount that amount back five years to obtain $1,096.4 million.

The terminal share compares present values at the same date. Dividing the undiscounted $1,765.7 million terminal value by today's $1,468.3 million enterprise value would mix dates and produce a misleading percentage.

Show the range before interpreting the single result

Across the displayed assumptions, enterprise value ranges from $1,169.0 million to $2,004.5 million. This is assumption sensitivity, not a confidence interval. The table assigns no probability to a cell and does not establish a market price.

Holding year-5 cash flow constant isolates the formula's response, but a complete operating forecast must also fund growth. Higher long-run revenue growth may require more capital spending and working capital. A terminal cash flow that assumes continuing growth with insufficient reinvestment can overstate value even when the formula is calculated correctly.

A share above 100% can be mathematically correct

Suppose explicit forecast cash flows have a present value of negative $50 million and terminal cash flows have a present value of $150 million. Enterprise value is $100 million, so the terminal share is 150%. That result follows from the negative explicit contribution; it is not, by itself, a percentage-formatting error.

It does reveal that the valuation depends on a later recovery overcoming early cash losses. Examine how the business reaches that recovery, whether it has enough funding to get there and how much reinvestment the later cash generation requires. A percentage alone cannot answer those questions. If enterprise value is zero, the share is undefined; if enterprise value is negative, the usual dependence interpretation is unreliable.

What to change in the forecast

Check whether the final explicit year represents a sustainable operating state. A temporary capex pause, working-capital release or unusually favorable tax payment can make year-5 cash flow a poor starting point for perpetuity. Extend the explicit forecast where there is a business reason to model the transition, rather than adding years merely to reduce the displayed terminal percentage.

Explain WACC, long-run growth and the associated margin and reinvestment assumptions together. Keep perpetual growth below the discount rate in this model and consistent with the currency and inflation basis. To move from enterprise value to equity value, separately reconcile debt and nonoperating assets; the calculation above does not include that reconciliation.

Method and sources

All numerical examples are original illustrative calculations. The perpetuity method and its sustainable-growth constraints are described in Aswath Damodaran's NYU Stern materials on estimating terminal value and the stable growth rate. His valuation project questions explain the link between stable growth, return on capital and reinvestment. These sources support the method, not the selected 9–11% discount rates or 2–4% growth assumptions.

Explore your own cash flows with the DCF calculator, then compare the underlying reporting and investment discussion in the company analyses.