Model guaranteed yields, compound reinvestment frequencies, and post-tax real returns with institutional actuarial precision.
Scheduled commercial banks in India follow standard quarterly compounding conventions where accrued interest is added to the principal balance every 90 days:
This eliminates yield drag compared to simple payouts, generating incremental value over time.
5-Year Tax Saver FDs qualify for income deduction up to ₹1.5 Lakh under Section 80C. However, interest is taxed at marginal slab rates:
Form 15G/15H can be submitted at financial year start if estimated total annual tax liability remains zero.
Every depositor in an insured bank is insured up to a maximum of ₹5,00,000 (Principal + Interest) by the Deposit Insurance and Credit Guarantee Corporation.
For large portfolios exceeding ₹50L, CalcSpace recommends institutional laddering across 3 to 5 distinct tier-1 commercial banking licenses.
Deterministic period-by-period capital growth and interest reinvestment ledger.
| Period | Opening Balance (₹) | Period Interest (₹) | Cumulative Interest (₹) | Closing Balance (₹) | Effective Multiplier |
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A Fixed Deposit (FD) Calculator helps you calculate the exact maturity amount and total interest you will earn on your fixed deposit investment. Fixed deposits are one of the safest investment options in India, offered by banks, NBFCs, and the Post Office. By entering your principal amount, interest rate, tenure, and compounding frequency, this calculator instantly shows your FD returns — allowing you to compare offers from different banks and choose the best FD for your savings goals.
A Fixed Deposit (FD) is a financial instrument offered by banks and NBFCs where you deposit a lump sum for a fixed period at a predetermined interest rate. At maturity, you receive the principal plus accumulated interest. FDs are insured by DICGC (Deposit Insurance and Credit Guarantee Corporation) up to ₹5 lakh per depositor per bank, making them one of the safest savings options in India. Interest can be received periodically (monthly, quarterly, annually) or accumulated at maturity (cumulative FD).
For cumulative FDs (compound interest), the maturity amount is calculated using compound interest formula. For simple interest FDs, interest is calculated on the principal only.
Maturity Amount = P × (1 + r/n)^(n×t)
Simple Interest FD: SI = P × r × t / 100
Where: P = Principal, r = Annual Rate (decimal), n = Compounding frequency/year, t = Tenure in yearsEnter your Principal Amount — the lump sum you plan to deposit (e.g., ₹1,00,000).
Enter the Annual FD Interest Rate (%) — check your bank's current FD rates (e.g., SBI: 6.5–7.25%, small finance banks: 8–9%).
Enter the Tenure in Years — the duration of your FD (e.g., 1 year, 3 years, 5 years).
Select Compounding Frequency — most bank FDs compound quarterly; some compound monthly or annually.
View the Maturity Amount and Total Interest Earned in the results panel.
Sunita from Jaipur invests ₹5,00,000 in an FD at 7.0% annual interest for 5 years with quarterly compounding. Using the FD calculator: Maturity Amount = ₹7,05,829. Total Interest Earned = ₹2,05,829. If she chose a monthly compounding FD at the same rate, the maturity would be slightly higher at ₹7,06,851. Senior citizens typically get an additional 0.25–0.5% rate, so Sunita's parents would earn even more on the same deposit.
Guaranteed Returns: FD interest rates are fixed at the time of deposit — no market risk.
DICGC Insurance: Bank FDs are insured up to ₹5 lakh per depositor per bank under DICGC.
Flexible Tenure: FDs can be opened for as short as 7 days to as long as 10 years.
Senior Citizen Benefit: Most banks offer 0.25–0.50% extra interest to depositors above 60 years.
Tax-Saving FDs: 5-year FDs qualify for Section 80C deduction up to ₹1.5 lakh.
Loan Against FD: You can take a loan of up to 90% of your FD value without breaking it.
Premature Withdrawal: Most FDs allow premature withdrawal with a small penalty (0.5–1%).
Not checking TDS deduction — banks deduct 10% TDS on FD interest if it exceeds ₹40,000 per year (₹50,000 for seniors).
Ignoring inflation — FD returns at 6–7% barely keep pace with 5–6% inflation in India.
Not exploring small finance banks — regulated by RBI, they offer higher rates (8–9%) than large banks.
Locking all funds in FD without maintaining liquidity for emergencies.
Forgetting to submit Form 15G/15H — eligible non-taxpayers can avoid TDS by submitting this form.
Not laddering FDs — opening one large FD vs. multiple FDs of different tenures reduces interest rate risk.
The FD Calculator on Inneroot CalcSpace helps you instantly compare fixed deposit returns across different banks, tenures, and compounding frequencies. While FDs offer safety and guaranteed returns, always consider inflation-adjusted returns and explore tax implications. For highest safety, stick to bank FDs with DICGC insurance coverage. Use this calculator alongside our SIP and Compound Interest calculators to build a balanced savings and investment strategy.