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Simple Interest Calculator

Calculate simple interest and maturity value from principal, annual rate and time period. Values are calculated locally in your browser and can be edited for your bank, investment or tax assumptions.

NPR friendlyNo signupInstant estimate

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How to use

Enter your amount, rate and period. The result updates instantly as you change values.

Accuracy note

Financial and tax results are estimates. Confirm current rates and rules with your bank, advisor or official source.