FD Calculator
Calculate Fixed Deposit maturity amount and interest earned with monthly, quarterly, half-yearly or yearly compounding.
Principal Amount
₹1,00,000
Interest Earned
₹14,888
+14.89%
Maturity Amount
₹1,14,888
How to Use
- 1
Enter deposit amount
Type the principal amount you want to deposit.
- 2
Set rate and tenure
Enter the annual interest rate and tenure in months or years.
- 3
View maturity amount
See your total maturity value and interest earned.
How It Works
A Fixed Deposit locks a lump sum with a bank for a fixed tenure at a fixed interest rate — this calculator projects your maturity amount based on how often the bank compounds interest.
The maturity formula
Maturity Amount = P × (1 + r/n)^(n×t), where P is the deposit amount, r is the annual interest rate, n is the compounding frequency per year (4 for quarterly, the most common in India), and t is the tenure in years.
Why compounding frequency changes your return
Quarterly compounding earns slightly more than yearly compounding at the same nominal rate, because interest starts earning its own interest sooner. Banks typically advertise the nominal annual rate, not the effective annual yield — the calculator shows you the real maturity value either way.
Examples
₹5,00,000 FD at 7% for 5 years, quarterly compounding
n = 4, t = 5: Maturity ≈ ₹7,05,420 — interest earned ≈ ₹2,05,420 on the original ₹5,00,000 deposit.
Comparing bank rates
The same ₹5,00,000 at 8.5% (a small finance bank rate) instead of 7% for 5 years grows to roughly ₹7,64,780 — about ₹59,000 more, showing why comparing rates across banks before locking in an FD matters.
Common Use Cases
- Comparing maturity value across banks offering different FD rates
- Planning a lump-sum investment with a guaranteed, fixed return
- Checking how tenure length affects total interest earned
- Estimating post-tax returns by factoring in your income tax slab on the interest earned
Tips
- FD interest is fully taxable at your income tax slab rate, and banks deduct TDS if your total interest from that bank exceeds ₹40,000 in a year (₹50,000 for senior citizens) — factor this into your real post-tax return.
- Small finance banks often offer meaningfully higher FD rates than large banks for the same tenure — but check that your deposit is within the ₹5 lakh DICGC insurance limit per bank.
- Breaking an FD before maturity usually incurs a penalty (typically 0.5-1% lower rate) — choose a tenure you're confident you won't need to break early.
Frequently Asked Questions
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