MONEY BASICS · CALCULATOR

Simple Interest Calculator

Calculate simple interest and the maturity value from the principal, annual rate and time period.

Simple interest illustration
Enter values and select Calculate.

Formula

Simple interest = P × R × T ÷ 100, where P is principal, R is annual rate in percent and T is time in years.

Maturity value = principal + simple interest.

Related reading

Simple vs compound interest

Compound interest explained

Effective interest

Inflation and purchasing power