WACC Calculator (Weighted Average Cost of Capital)

WACC blends what a company pays each of its two kinds of capital providers — equity holders and lenders — into one rate, weighted by each side's share of total financing: WACC = (E/V)·Re + (D/V)·Rd·(1 − Tc), where V = E + D is total capital. Debt's cost is counted after tax because interest payments are typically tax-deductible, so a company's real cost of debt is its stated rate reduced by its marginal tax rate; equity has no equivalent deduction, so its cost enters at face value.

Every figure here — the market values of equity and debt, the cost of equity, the pre-tax cost of debt, and the tax rate — is a number you supply directly, never estimated or looked up. A real WACC analysis often estimates cost of equity itself (commonly via CAPM, which needs a risk-free rate and market beta) rather than taking it as a given, but that estimate depends on live market data this calculator doesn't fetch — treat this as the final blending step once you already have your own rate assumptions.