What is an FD calculator?
A fixed deposit (FD) calculator estimates the maturity amount on a one-time bank or NBFC deposit. You lock in a lump sum for a chosen tenure at a stated annual interest rate; the tool shows invested amount, interest earned, and total value at maturity.
FDs typically offer higher rates than savings accounts with a fixed lock-in period ranging from 7 days to 10 years. Actual rates vary by bank, tenure slab, and customer category (regular vs senior citizen).
How can an FD calculator help you?
Manual FD maturity calculations involve compounding frequency and tenure conversions. A calculator gives you accurate figures instantly for comparison across banks and tenures.
- Estimate maturity value before opening an FD with your bank.
- Compare interest earned at different rates and tenures.
- Plan lump-sum goals alongside recurring options like the <a href="/calculators/rd/">RD calculator</a>.
How does this FD calculator work?
This tool uses quarterly compounding—the method most Indian banks apply to fixed deposits. Interest is added every quarter on the accumulated balance.
M = P × (1 + r/4)^(4t)
- M
- Maturity amount
- P
- Principal (total investment)
- r
- Annual interest rate as a decimal (rate ÷ 100)
- t
- Tenure in years
Example: ₹1,00,000 at 7% p.a. for 5 years → M ≈ ₹1,41,478
How to use this FD calculator
Enter total investment, rate of interest (p.a.), and time period in years. Results update as you adjust sliders or type values.
For monthly deposits instead of a lump sum, use the recurring deposit calculator.
What this calculator does not include
TDS on interest, penalty for premature withdrawal, senior-citizen rate premiums, and special scheme rules are not modeled. Rates are assumed constant for the full tenure.
Frequently asked questions
Is FD interest compounded quarterly?
Most Indian banks compound FD interest quarterly. This calculator uses that convention. Some institutions may use different frequencies—check your deposit receipt.
What is the difference between FD and RD?
An FD is a one-time lump-sum deposit. An RD requires a fixed monthly installment for the entire tenure.
Are FD returns guaranteed?
Bank FDs up to ₹5 lakh per bank are insured by DICGC. Returns depend on the contracted rate; this tool shows estimates based on your inputs.