Simple Interest Calculator — FY 2025-26
Quickly work out simple interest. Enter the principal, rate and time to get the interest and the total amount payable or receivable.
Frequently asked questions
- What is the simple interest formula?
- Simple interest = principal × rate × time ÷ 100. It is calculated only on the original principal.
- When is simple interest used?
- It is common for short-term loans, some vehicle loans and informal lending where interest is not compounded.
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