How is WACC defined?

How is WACC defined?

• A. The minimum cost of debt
• B. The average cost of debt and equity
• C. The cost of equity only
• D. A weighted average of the component costs of debt, preferred stock, and common equity

Answer: (D)

WACC is the overall cost of capital for a company, combining the costs of all financing sources in proportion to their use. It reflects how much it costs the firm to finance its operations with debt, any preferred stock, and common equity. Practically, WACC is a weighted average of the component costs: it uses the market-value weights of debt, preferred stock, and equity and sums the after-tax cost of debt with the costs of the other components. The formula is typically written as: WACC = (D/V)·r_D·(1−T) + (P/V)·r_P + (E/V)·r_E, where D, P, E are the market values of debt, preferred stock, and equity, and V = D + P + E. The debt portion is after-tax because interest is tax-deductible. This best matches the idea of a weighted average of all financing costs. It’s not just the minimum cost of debt, not a simple average of debt and equity, and not the cost of equity alone.

WACC is the overall cost of capital for a company, combining the costs of all financing sources in proportion to their use. It reflects how much it costs the firm to finance its operations with debt, any preferred stock, and common equity.

Practically, WACC is a weighted average of the component costs: it uses the market-value weights of debt, preferred stock, and equity and sums the after-tax cost of debt with the costs of the other components. The formula is typically written as: WACC = (D/V)·r_D·(1−T) + (P/V)·r_P + (E/V)·r_E, where D, P, E are the market values of debt, preferred stock, and equity, and V = D + P + E. The debt portion is after-tax because interest is tax-deductible.

This best matches the idea of a weighted average of all financing costs. It’s not just the minimum cost of debt, not a simple average of debt and equity, and not the cost of equity alone.