How do you calculate the Cost of Equity?

How do you calculate the Cost of Equity?

• A. Cost of Equity = Risk-Free Rate + Beta * Equity Risk Premium
• B. Cost of Equity = Inflation Rate + Beta
• C. Cost of Equity = Risk-Free Rate × Beta × Equity Risk Premium
• D. Cost of Equity = Net Income + Depreciation

Answer: (A)

Cost of equity is the return investors require for owning a company's stock, and the standard way to estimate it is CAPM. The risk-free rate provides a safe baseline return, beta measures how much the stock’s returns move with the market (higher beta means more risk and a higher required return), and the equity risk premium is the extra return investors expect for taking on market risk. Putting it together, cost of equity = risk-free rate + beta × equity risk premium. For example, with a risk-free rate of 3%, beta of 1.2, and an equity risk premium of 5%, the cost of equity would be 3% + 1.2×5% = 9%. This approach aligns the required return with market risk; others mix inflation, purely multiply terms, or rely on accounting figures like net income and depreciation, which do not represent the return investors require for equity.

Cost of equity is the return investors require for owning a company's stock, and the standard way to estimate it is CAPM. The risk-free rate provides a safe baseline return, beta measures how much the stock’s returns move with the market (higher beta means more risk and a higher required return), and the equity risk premium is the extra return investors expect for taking on market risk. Putting it together, cost of equity = risk-free rate + beta × equity risk premium. For example, with a risk-free rate of 3%, beta of 1.2, and an equity risk premium of 5%, the cost of equity would be 3% + 1.2×5% = 9%. This approach aligns the required return with market risk; others mix inflation, purely multiply terms, or rely on accounting figures like net income and depreciation, which do not represent the return investors require for equity.