FD Calculator
Enter a deposit amount, the interest rate your bank offers, the tenure, and how often interest compounds to see the maturity value of a cumulative fixed deposit.
Your numbers
What this calculator shows
In a cumulative fixed deposit, the bank adds interest to your deposit at regular intervals and the next round of interest is calculated on the higher balance. The calculator shows the interest earned, the maturity value, and the effective annual yield implied by the compounding frequency.
The formula, in plain words
Maturity value = deposit × (1 + annual rate ÷ n)^(n × years), where n is how many times a year interest is compounded — 4 for quarterly, 12 for monthly. Many Indian banks compound term deposits quarterly, which is why that is the default here, but always check your bank's terms.
A worked example
₹1,00,000 at 7% for 5 years, compounded quarterly, matures at about ₹1,41,478 — interest of roughly ₹41,478. With yearly compounding the same deposit would reach about ₹1,40,255. The difference is small, but it grows with larger amounts and longer tenures.
Assumptions and limits
- The rate stays fixed for the whole tenure, as it does for a standard FD booked today.
- No premature withdrawal; breaking an FD early usually means a lower rate or a penalty.
- Figures are before tax, and they are not adjusted for inflation.
Frequently asked questions
What is the effective annual yield?
It is the rate that, compounded once a year, gives the same result as the quoted rate compounded more often. A 7% rate compounded quarterly works out to about 7.19% a year.
Does this work for FDs that pay out interest?
No. This models a cumulative FD, where interest is added to the deposit. If interest is paid out monthly or quarterly, it does not compound inside the FD.
Is FD interest taxable?
FD interest is generally taxable, and banks may deduct tax at source. Tax rules change and depend on your situation, so the calculator shows pre-tax figures only.
These figures are estimates for learning and planning, not investment, tax, or legal advice. Returns on market-linked investments are not guaranteed, and real outcomes depend on fees, taxes, timing, and actual returns. See our disclaimer.