=Personal FinanceTOOLKIT

Simple Interest

Calculate interest without compounding.

Your numbers

Enter your numbers to see the result.

How Simple Interest works

Simple interest = principal × annual rate ÷ 100 × years. Interest does not earn further interest in this model.

A worked example

These sample values illustrate the calculation. Use your own numbers in the calculator for your result.

Example inputs
Principal
1000
Annual rate (%)
5
Years
3
Interest earned
$150.00
Final amount
$1,150.00

Assumptions and limits

Rates, fees and contribution schedules are the assumptions you enter. This estimate does not include changes you have not entered.

Educational estimate only. This is not personalized financial, investment or tax advice.