Capital Cash Flow Valuation

Standard DCF valuation (using free cash flow to the firm) handles the tax benefit of debt indirectly, by lowering the weighted average cost of capital used to discount the cash flows. Capital Cash Flow (CCF) valuation instead adds the interest tax shield directly into the cash flow itself, then discounts the total at the unlevered cost of capital — the return investors would require if the company had no debt at all.

The practical advantage shows up for leveraged buyouts and other situations where debt is paid down aggressively over a few years: the standard WACC-based approach technically requires the discount rate to be recalculated every year the capital structure changes, which is easy to skip and get wrong, while CCF lets the discount rate stay fixed and puts all the debt-related benefit inside the cash flow line instead.

Worked example. A company has unlevered free cash flow of $100 million and pays $20 million of interest, generating a tax shield of 20 \times 25\% = \5$million at a 25$100 + 5 = $105$ million, discounted at the unlevered cost of capital of, say, 9%, rather than at a lower WACC that already impounds the tax benefit.

CCF and the standard WACC method are meant to arrive at the same enterprise value when applied correctly with a stable capital structure — the choice between them is really about which is less error-prone for the specific deal being modeled, not about which produces a "truer" number.