Simple Interest Calculator
Simple interest and maturity amount.
Enter your details
How it is calculated
Worked example
₹1,00,000 at 8% for 3 years: SI = 1,00,000 × 8 × 3 ÷ 100 = ₹24,000, so the amount is ₹1,24,000.
About the Simple Interest Calculator
Simple interest and maturity amount. This free loan & emi tool runs entirely in your browser: nothing you type is sent to a server, and you can save, print or download the result.
What you need to enter
You will be asked for principal amount, interest rate (% per year), time (years), additional months. Fields marked * are required. Every field shows a hint and the allowed range.
How to use it
- Fill in the inputs (sample values are pre-filled so you can see how it works).
- Press Calculate to see the result, breakdown and chart.
- Use Print, Download PDF or Share to keep the result, or come back to it from your saved history.
Who it helps
Salaried individuals, business owners, investors and professionals who want a quick, transparent estimate before they file, invest or plan. If your case has special facts, our team can review it - ask for a consultation.
Results are estimates based on the rules and rates described under "How it is calculated". Laws change and individual facts differ, so confirm with official sources or a qualified professional before acting. This is not tax, legal or investment advice.
Frequently asked questions
What is the difference between simple and compound interest?
Simple interest is calculated on the principal only. Compound interest is calculated on principal plus interest already earned, so it grows faster over longer periods.
How do I convert months to years?
Divide months by 12. Nine months is 0.75 years. Use the additional months box here and the conversion is done for you.
Need help beyond the calculator?
Talk to our tax and compliance team for advice based on your documents.