How do you calculate expected return on CAPM model?
Christopher Ramos
Updated on February 09, 2026
CAPM formula shows the return of a security is equal to the risk-free return plus a risk premium, based on the beta of that security. In the CAPM, the return of an asset is the risk-free rate, plus the premium, multiplied by the beta of the asset.
Which risk-free rate to use?
You usually use a 10yr rate. It’s a matter of convenience. In an ideal world, the best risk free rate you can use will be in sync with the tenor of your cash flows. If your investments are due to give you cash flows annually, you should be using a one year risk free rate (t-bill) to discount these cash flows.
Is the expected return equal to the risk free return?
It shows that the expected return on a security is equal to the risk-free return plus a risk premium Equity Risk Premium Equity risk premium is the difference between returns on equity/individual stock and the risk-free rate of return.
What’s the difference between market risk premium and expected return?
The market risk premium is the expected return of the market minus the risk-free rate: rm – rf. The market risk premium represents the return above the risk-free rate that investors require to put money into a risky asset, such as a mutual fund.
How to calculate expected return with beta and market risk?
CAPM can provide the estimate using a few variables and simple arithmetic. Risk-free rate (r f ), the interest rate available from a risk-free security, such as the 13-week U.S. Treasury bill. No instrument is completely without some risk, including the T-bill, which is subject to inflation risk.
How is the expected return of the market calculated?
Expected market return (r m ), a forecast of the market’s return over a specified time. Because this is a forecast, the accuracy of the CAPM results are only as good as the ability to predict this variable for the specified period. The market risk premium is the expected return of the market minus the risk-free rate: r m – r f.