Calculate simple interest

To calculate simple interest in Excel (i.e. interest that is not compounded), you can use a formula that multiples principal, rate, and term. This example assumes that $1000 is invested for 10 years at an annual interest rate of 5%. Simple interest means that interest payments are not compounded – the interest is applied to the principal only. In the example shown, the formula in C8 is: =C5*C7*C6