FD calculator: fixed deposit maturity and interest
Enter the deposit amount, the interest rate your bank offers and the tenure to see the maturity amount, the interest earned and the maturity date. Tenures can be in years, months, days or a mix, such as 444 days.
Everything runs on your device. Nothing you add or type is sent to any server.
How to use it
- 01
Enter the amount you will deposit and the yearly interest rate from your bank's rate card. Senior citizen rates can differ, so enter the rate that applies to you.
- 02
Enter the tenure in years, months and days. Leave a box at 0 if you don't need it. The deposit date starts as today and you can change it.
- 03
Choose how often interest is compounded. Quarterly is selected first. Read the maturity amount, interest and maturity date.
How the interest is worked out
For a cumulative deposit, interest is added to the balance at the end of each whole period, counted date to date from the deposit date. Each time, the balance grows by the yearly rate divided by the number of periods in a year. For the days left after the last whole period, simple interest is added on the grown balance at rate × days ÷ 365. SBI describes this method for its reinvestment deposits: compounding for completed quarters and a 365-day year for the remaining days. HDFC Bank also states that it calculates interest quarterly on deposits over 6 months.
Worked example: ₹1,00,000 at 7 % for 5 years, compounded quarterly, matures at ₹1,41,477.82, so the interest is ₹41,477.82. A 444-day deposit of ₹1,00,000 at 7.25 % made on 8 November 2026 matures on 26 January 2028: 4 whole quarters plus 79 days, giving ₹1,09,135.58.
Simple interest and payout deposits
Choose Simple interest when interest is paid out to you, or when your bank pays simple interest on a short deposit. HDFC Bank, for example, says deposits of 6 months or less earn simple interest at maturity. Simple interest here is principal × rate × days ÷ 365.
What is not included
Tax and TDS are not deducted, and penalties for breaking the deposit early are not included. Banks may round differently, so a small difference from your bank's figure is normal. Check the deposit receipt for the final amount. All calculations stay in your browser.
Frequently asked questions
Is FD interest always compounded quarterly?
Not always. It depends on the bank and the deposit type, so the compounding is a choice here. Payout deposits pay interest out instead of compounding it.
What is the effective yearly rate?
It is what the rate becomes after compounding over one year. At 7 % compounded quarterly it is about 7.19 %.
Why does the deposit date matter?
Months have different lengths, so the number of days, and therefore the interest for leftover days, depends on when the deposit starts.