Discounted Cash Flow (DCF) Valuation Explained

Project Free Cash Flow

Develop a credible forecast of revenue, expenses, taxes, capital expenditure and working capital requirements.

Use a consistent definition of cash flow that matches the valuation perspective and discount rate.

Understand the Discount Rate

Estimate Terminal Value

The discount rate reflects the required return and risk characteristics of the projected cash flows.

Calculate Enterprise and Equity Value

Weighted average cost of capital (WACC) is commonly used for unlevered free cash flow models, subject to appropriate assumptions.

Test Sensitivity and Credibility

Because businesses may operate beyond an explicit forecast period, DCF models often estimate a terminal value using a growth model or exit multiple.

Terminal assumptions can represent a large share of the result and require careful scrutiny.

A Simple Discounting Example

Discount forecast cash flows and terminal value to estimate enterprise value under the chosen model.

Adjust for net debt, debt-like items or other relevant factors to analyse shareholder equity value.

Forecasting Operating Cash Flows

Change operating assumptions, growth rates and discount rates to present a reasonable valuation range.

Compare outcomes with market multiples and transaction evidence where suitable, and explain limitations.

Using WACC Consistently

If a model expects a cash flow of 110 in one year and the relevant discount rate is 10%, its present value is 100.

Business DCF models extend this principle across multiple periods and a terminal value.

Terminal Value Sensitivity

The example explains the mathematics, not the appropriate discount rate for any particular company.

A forecast should link revenue growth, margins, taxes, capital expenditure and working capital to future cash flows.

Revenue assumptions need support from market conditions and operational capacity.

Differences between accounting profit and actual cash generation must be reflected explicitly, especially for businesses growing quickly.

Weighted average cost of capital may be appropriate when unlevered free cash flow is being discounted under consistent assumptions.

Cost of debt, cost of equity, target capital structure and tax effects must be estimated carefully.

From Enterprise to Equity Value

Mixing cash flow definitions and discount rates can produce misleading results.

A large part of a DCF result can depend on estimated value beyond the explicit forecast period.

Long-run growth rates or exit multiples require support and should be consistent with mature operating economics.

Test alternative assumptions to understand how much of the final estimate depends on uncertain distant cash flows.

The DCF may estimate enterprise value before financing and other adjustments.

Equity value analysis can require net debt, debt-like items and relevant non-operating assets.

Illustrative DCF Mechanics

A transaction price also reflects deal structure, control, diligence and timing.

Present a sensitivity range and compare the output with other valuation evidence.

Valuation Assumptions and Review Dates

The underlying idea of discounted cash flow is straightforward: cash available in the future is not valued as though it were already in hand.