What Is a DCF Analysis?
A Discounted Cash Flow (DCF) analysis is a fundamental valuation methodology that determines the intrinsic value of a company based on the present value of its expected future cash flows. The core principle is the time value of money: a dollar received today is worth more than a dollar received in the future because today's dollar can be invested to earn a return.
The Two Components of a DCF
A DCF model has two main components. The first is the projection period, typically 5-10 years of explicit free cash flow forecasts. The second is the terminal value, which captures the value of all cash flows beyond the projection period. Terminal value typically represents 60-80% of the total DCF value, which is one of the methodology's key criticisms.
Step-by-Step Process
First, project unlevered free cash flow (UFCF) for the explicit forecast period. UFCF starts with EBIT, subtracts taxes (at the marginal rate, applied to EBIT), adds back depreciation and amortization, subtracts capital expenditures, and adjusts for changes in net working capital.
Second, calculate the terminal value using either the perpetuity growth method (Gordon Growth Model) or the exit multiple method. The perpetuity growth method assumes cash flows grow at a constant rate forever: Terminal Value = Final Year FCF × (1 + g) ÷ (WACC − g). The exit multiple method applies an EV/EBITDA multiple to the final year's EBITDA.
Third, discount all projected cash flows and the terminal value back to the present using WACC as the discount rate. Sum these present values to arrive at Enterprise Value.
Finally, bridge from Enterprise Value to Equity Value by subtracting net debt, then divide by diluted shares to get implied price per share.
Key Assumptions and Sensitivities
The DCF is highly sensitive to three inputs: the discount rate (WACC), the terminal growth rate, and near-term revenue growth assumptions. A small change in WACC or terminal growth rate can swing the valuation by 20-30%. This is why bankers always present DCF results as a range using sensitivity tables (also called data tables or football field charts).
Strengths and Weaknesses
The DCF's primary strength is that it is based on intrinsic value — it does not depend on potentially irrational market pricing or the availability of comparable companies. It forces rigorous thinking about a company's fundamental drivers.
The primary weakness is sensitivity to assumptions. Small changes in growth rates, margins, or discount rates produce dramatically different valuations. Critics argue that the precision of a DCF model creates a false sense of accuracy. Additionally, the terminal value dominance means the final year assumptions drive most of the value.
DCF in Practice
In banking, the DCF is rarely used as the sole valuation methodology. It is typically presented alongside comparable companies analysis and precedent transactions to triangulate a valuation range. The DCF is most useful for companies with predictable, stable cash flows and less useful for early-stage companies, cyclical businesses, or companies undergoing significant strategic changes.