FD Calculator – Calculate Fixed Deposit Returns
Use this fixed deposit calculator to estimate your maturity amount and interest earned. Most Indian banks use quarterly compounding for FDs.
Calculate FD Returns
How FD interest is calculated
A = Maturity amount, P = Principal, r = Annual interest rate (decimal), n = Compounding frequency per year (e.g. 4 for quarterly), t = Time in years.
Example calculation
If you invest ₹1,00,000 at 6.5% per annum for 5 years with quarterly compounding:
Maturity = 1,00,000 × (1 + 0.065/4)^(4×5) ≈ ₹1,37,689. Interest earned ≈ ₹37,689.
FAQs
Key Terms
- Maturity amount
- Final value received at deposit end: principal plus accumulated interest.
- Compounding
- Interest earned on both principal and previously earned interest.
- Annualized rate
- Interest rate quoted for one year; converted internally for period-wise calculations.
Benefits of This Calculator
- Quickly compare tenure and rate combinations before locking deposits.
- Understand maturity, principal, and interest split through chart-style outputs.
- Use formula and FAQ context to validate bank app numbers confidently.
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How to read your FD calculator result
A fixed deposit in India is essentially a contract: you hand the bank a lump sum, and in return the bank guarantees a specified interest rate for a fixed tenure, regardless of what the RBI repo rate does in the meantime. Most scheduled banks compound the interest quarterly, which means your effective yield is slightly higher than the headline rate. The calculator above uses that quarterly-compounding model so the maturity value matches what a bank like SBI, HDFC or ICICI will quote on the receipt.
Two numbers matter: the maturity amount (what you finally get) and the interest earned (maturity minus the principal). If you fall in the 30% slab and your annual interest across all FDs crosses ₹40,000 (₹50,000 for senior citizens), the bank will deduct TDS. Use the FD tax calculator to see your post-tax return — that, not the gross interest, is the real comparison against debt funds and small savings schemes.
Worked example: ₹2,00,000 at 7.1% for 3 years (quarterly compounding)
- Principal
- ₹2,00,000
- Annual rate
- 7.10%
- Tenure
- 3 years (12 quarters)
- Maturity amount
- ₹2,46,907
- Interest earned
- ₹46,907
The same ₹2,00,000 at simple interest would grow to only ₹2,42,600. The extra ₹4,300 comes from quarterly compounding — interest earning interest each quarter.