FD Calculator
Fixed deposit maturity, interest and post-tax return.
Banks compound fixed deposit interest quarterly: M = P x (1 + r/4)^(4t). A ₹5,00,000 FD at 7.1% for 5 years matures at about ₹7,12,000, giving ₹2.12 lakh of interest. In the 30% slab the post-tax return falls to roughly 4.97%.
Your Inputs
Maturity amount
Principal
₹5 L
Interest
₹2.11 L
Interest earned
₹2,10,873
Post-tax return
5.10%
Tenure Impact Analysis
See how the final corpus changes if you stay invested longer.
₹5.36 L
+-₹1.74 L total
-24.5% Growth
₹6.18 L
+-₹93.3 K total
-13.1% Growth
₹7.11 L
Baseline
Selected tenure
₹10.11 L
+₹3 L total
42.2% Growth
Formula used
M = P x (1 + r/n)^(nt)
How this works
TDS is not the same as your tax liability
Banks deduct 10% TDS once interest crosses ₹50,000 in a year (₹1,00,000 for senior citizens, as raised in Budget 2025). You still owe the difference up to your slab rate. Submit Form 15G/15H only if your total income is genuinely below the taxable limit.
Laddering beats one long deposit
Splitting a corpus across 1, 2, 3 and 5-year deposits means one matures every year, so you reinvest at prevailing rates and never break a deposit early. Premature withdrawal usually costs 0.5-1% of the applicable rate.