Cost of Equity Calculator
Calculate cost of equity using CAPM or Dividend Discount Model. Determine the required return demanded by equity investors for capital budgeting and stock valuation.
About This Calculator
The Cost of Equity Calculator helps businesses, investors, and finance professionals determine the required rate of return that equity investors demand for investing in a company. It is an essential input for capital budgeting decisions, company valuation using discounted cash flow (DCF) analysis, and calculating the weighted average cost of capital (WACC). This calculator supports both the Capital Asset Pricing Model (CAPM) and the Dividend Discount Model (DDM).
CAPM Formula: Cost of Equity = Risk-Free Rate + Beta × (Market Return − Risk-Free Rate). The risk-free rate represents the return on risk-free government securities. Beta measures the stock's systematic risk relative to the overall market. The difference between market return and risk-free rate is the market risk premium, which compensates investors for taking on market risk.
Dividend Discount Model Formula: Cost of Equity = (Dividend Per Share / Current Share Price) + Growth Rate of Dividends. This model is appropriate for companies with a stable dividend payout history. The dividend yield plus the expected growth rate of dividends gives the total return investors require.
Regional Notes
India: The risk-free rate is typically based on the 10-year Government of India G-sec yield (around 7% as of 2025). The Nifty 50 historical return is approximately 14-16%, giving a market risk premium of 7-9%. Beta values for Indian stocks range widely; defensive sectors like FMCG have betas around 0.5-0.8 while cyclical sectors may exceed 1.5.
United States: The risk-free rate is based on the 10-year US Treasury yield (around 4.5% as of 2025). The S&P 500 historical return averages 10-11%, giving a market risk premium of 5.5-6.5%. Most US large-cap stocks have betas between 0.8 and 1.2.
United Kingdom: The risk-free rate is based on the 10-year UK Gilt yield (around 3.5-4% as of 2025). The FTSE 100 historical return averages 7-9%, with a market risk premium of 4-5%. UK stocks tend to have betas clustered around 0.8-1.1.
Frequently Asked Questions
What is the cost of equity and why is it important?
The cost of equity is the rate of return a company must offer to equity investors to compensate them for the risk of investing in the company. It is crucial for capital budgeting decisions, valuation models like DCF, and determining a company's weighted average cost of capital (WACC). A higher cost of equity indicates higher perceived risk by investors.
How is cost of equity calculated using CAPM?
The CAPM formula is: Cost of Equity = Risk-Free Rate + Beta × (Market Return - Risk-Free Rate). The risk-free rate is typically the yield on government bonds (e.g., 10-year Treasury in the US, G-sec in India, Gilts in the UK). Beta measures the stock's volatility relative to the market. Market return is the expected return of a broad market index like the S&P 500, Nifty 50, or FTSE 100.
What is the Dividend Discount Model for cost of equity?
The Dividend Discount Model (DDM) formula is: Cost of Equity = (Dividend Per Share / Current Share Price) + Growth Rate of Dividends. This method is suitable for companies that pay regular dividends. For example, if a stock trades at $70, pays $2 in dividends per share, and dividends grow at 3% annually, the cost of equity is (2/70) + 0.03 = 5.86%.
What is a typical range for cost of equity in India?
In India, the cost of equity typically ranges from 12% to 16% for most companies. This reflects the higher risk-free rate (around 7% for 10-year G-sec) and equity risk premium in emerging markets. For mature companies with stable cash flows, it may be lower (10-12%), while high-growth or volatile sectors may see costs of 16% or higher.
What is a typical range for cost of equity in the US and UK?
In the US, cost of equity typically ranges from 7% to 12% for most companies, reflecting a risk-free rate around 4.5% (10-year Treasury) and a market risk premium of 5-6%. In the UK, it ranges from 6% to 10%, with a risk-free rate around 3.5-4% (10-year Gilt) and a lower equity risk premium. These ranges vary significantly by industry and company-specific risk factors.
Can I share the cost of equity calculation results?
Yes, the calculator saves all your inputs in the URL, so you can copy the browser URL and share it with anyone. When they open the link, the calculator will automatically populate the same values and compute the cost of equity instantly.
What is the difference between cost of equity and cost of debt?
Cost of equity is the return demanded by shareholders, while cost of debt is the interest rate a company pays on borrowings. Equity is more expensive than debt because equity investors bear higher residual risk. However, debt has a tax shield (interest is tax-deductible), making it cheaper on an after-tax basis. The weighted average of both gives the WACC.
How does beta affect the cost of equity?
Beta measures a stock's sensitivity to market movements. A beta of 1 means the stock moves in line with the market. A beta above 1 (e.g., 1.5) indicates higher volatility, increasing the cost of equity. A beta below 1 (e.g., 0.7) means lower volatility, reducing the cost of equity. For example, with a risk-free rate of 5% and market return of 12%, a stock with beta 1.5 has a cost of equity of 15.5% vs 11.9% for beta 0.7.