Calculate the cost of equity using either the CAPM (Capital Asset Pricing Model) or the Dividend Growth Model. Essential for equity valuation, capital budgeting, and investment analysis.
Formula: Cost of Equity = Risk-Free Rate + Beta × (Market Return - Risk-Free Rate)
Typically the yield on 10-year Treasury bonds
Measure of stock's volatility relative to the market
Historical average is around 10% for the S&P 500
Interpretation: Investors require a 10.10% return to compensate for the risk of investing in this equity.
The cost of equity is the return a company requires to compensate equity investors for the risk they undertake by investing their capital. It represents the minimum return shareholders expect for providing equity financing.
Cost of equity is a crucial component in:
Cost of equity helps investors and companies determine the required return for equity investments based on risk. Higher risk means higher required returns.
The Capital Asset Pricing Model (CAPM) calculates cost of equity based on systematic risk:
Cost of Equity = Rf + β × (Rm - Rf)
Rf = Risk-free rate (typically 10-year Treasury yield)
β = Beta, measuring stock's volatility vs. market
Rm = Expected market return
(Rm - Rf) = Market risk premium
Beta interpretation: β = 1 means the stock moves with the market; β > 1 means higher volatility; β < 1 means lower volatility.
The Dividend Growth Model (Gordon Growth Model) calculates cost of equity based on dividend payments:
Cost of Equity = (D₁ / P₀) + g
D₁ = Expected dividend per share next year
P₀ = Current stock price
g = Constant dividend growth rate
Best for: Mature, dividend-paying companies with stable growth. Not suitable for companies that don't pay dividends or have erratic dividend growth.
Tech stock with β = 1.5
Risk-free rate = 4%
Market return = 11%
Cost of Equity = 4% + 1.5 × (11% - 4%)
Cost of Equity = 4% + 10.5%
Cost of Equity = 14.5%
Utility stock
Expected dividend = $3
Stock price = $60
Growth rate = 4%
Cost of Equity = ($3 / $60) + 0.04
Cost of Equity = 0.05 + 0.04
Cost of Equity = 9%
Most companies have a cost of equity between 8-15%, though it varies by industry, company size, and risk profile. High-growth tech companies may have higher costs (12-20%), while stable utilities may have lower costs (7-10%).
Beta values are available on financial websites like Yahoo Finance, Bloomberg, or Morningstar. You can also calculate it using historical stock price data and regression analysis.
Most analysts use the 10-year U.S. Treasury yield as the risk-free rate, as it matches the long-term investment horizon of equity investments.
Cost of equity helps companies and investors determine the minimum acceptable return for equity investments, influences capital structure decisions, and is essential for valuation and capital budgeting.
Use our cost of equity calculator to determine the required return for your equity investments. Whether you're valuing a company, making capital budgeting decisions, or analyzing investment opportunities, understanding cost of equity is essential.
