FD Calculator
Project your fixed deposit's maturity value at any compounding frequency, with a clear principal-vs-interest breakdown.
How compounding frequency changes the outcome
Quarterly beats annual, narrowly
At the same quoted annual rate, more frequent compounding (monthly vs quarterly vs annual) produces a marginally higher maturity value — the difference grows with rate and tenure, but is usually modest.
Most Indian bank FDs compound quarterly
Unless your specific FD scheme states otherwise, quarterly compounding is the standard convention used by most Indian banks — this calculator defaults to it for that reason.
FD interest is fully taxable
Unlike PPF, FD interest is added to your taxable income each year (TDS applies above a threshold) — the maturity figure shown here is pre-tax.
What is a Fixed Deposit?
A Fixed Deposit (FD) is a savings instrument where you deposit a lump sum with a bank or NBFC for a fixed tenure, at a fixed interest rate agreed at the time of booking, in exchange for predictable, guaranteed returns regardless of what happens to broader interest rates or markets during that period. FDs remain one of the most widely held savings instruments in India precisely because of this predictability — you know exactly what you'll receive at maturity from the day you book the deposit.
FD tenures in India typically range from 7 days to 10 years, with banks offering different rates across different tenure bands, and often a slightly higher rate for senior citizens on the same tenure.
How compounding frequency actually changes your return
At the same quoted annual interest rate, an FD that compounds more frequently produces a marginally higher maturity value than one that compounds less frequently — because interest earned in earlier periods starts earning its own interest sooner.
Most Indian bank FDs compound quarterly by default, which is what this calculator uses unless you choose otherwise. The difference between quarterly and annual compounding on a typical FD is usually modest in rupee terms, but it grows with both the interest rate and the tenure — always confirm which compounding frequency your specific FD scheme actually uses, since it varies by bank and product.
The FD maturity formula, explained
Maturity Value = Principal × (1 + rate/n)(n×years)
Where n is the number of compounding periods per year — 1 for annual, 2 for half-yearly, 4 for quarterly, or 12 for monthly compounding. This is the standard compound interest formula used by Indian banks for FD maturity calculations, and this calculator lets you select any of the four common compounding frequencies to match your specific FD scheme.
A worked example, step by step
A ₹1,00,000 deposit at 7% annual interest for 5 years, compounded quarterly:
| Step | Value |
|---|---|
| Principal | ₹1,00,000 |
| Quarterly rate (7% ÷ 4) | 1.75% |
| Total quarters (5 × 4) | 20 |
| Maturity value | ₹1,41,478 |
| Total interest earned | ₹41,478 |
Compare this to the same deposit compounded annually instead of quarterly: the maturity value would be slightly lower, at ₹1,40,255 — a difference of over ₹1,200 purely from compounding frequency, on identical principal, rate, and tenure.
FD vs PPF vs debt mutual funds
Fixed Deposit
- Flexible tenure (7 days to 10 years)
- Interest fully taxable at your income slab
- Bank credit risk, partially mitigated by DICGC deposit insurance up to a limit
PPF
- Fixed 15-year lock-in, far less flexible
- Completely tax-free (EEE status) at every stage
- Sovereign (government) guarantee, no credit risk
Debt mutual funds offer a third option: potentially better post-tax returns than an FD for higher-tax-bracket investors (since gains are taxed differently from FD interest), but without the FD's fixed, guaranteed return — debt fund returns can fluctuate with interest rate movements and carry a small amount of credit risk depending on the fund's holdings.
How FD interest is taxed
FD interest is added to your total taxable income every year it's earned (even if you've chosen a cumulative FD that pays out only at maturity, the tax liability still arises annually on an accrual basis) and taxed at your applicable income tax slab rate. Banks deduct TDS (Tax Deducted at Source) once your FD interest from that bank crosses a specified annual threshold, though you remain responsible for declaring and paying tax on the full interest earned regardless of whether TDS was deducted.
Common FD mistakes to avoid
- Assuming all FDs compound the same way. Confirm your specific FD's compounding frequency — quarterly is the common default, but it isn't universal across every bank and scheme.
- Forgetting FD interest is fully taxable. Unlike PPF, every rupee of FD interest adds to your taxable income, which can meaningfully reduce your effective post-tax return, particularly in higher tax brackets.
- Breaking an FD early without checking the penalty. Premature withdrawal typically incurs a penalty (often 0.5–1% lower interest rate) applied retroactively to the entire holding period, not just the remaining tenure.
- Not comparing rates across tenure bands. Banks often offer different rates for different tenures, and the highest rate isn't always at the longest tenure — compare across the specific bank's published rate card.
How to use this calculator
- Enter your deposit amount, interest rate, and tenure.
- Select the compounding frequency — quarterly is the common Indian bank default, but check your specific FD scheme.
- Read the maturity value and the principal-vs-interest breakdown.
- Remember the result shown is pre-tax — factor in your income tax slab to estimate your actual post-tax return.
Frequently asked questions
Quarterly compounding is the most common default among Indian banks, which is why this calculator uses it as the pre-selected option. However, this varies by bank and by specific FD scheme - always confirm the actual compounding frequency on your FD's terms before relying on a specific maturity figure.
Yes, fully. FD interest is added to your total taxable income every year it accrues, and taxed at your applicable income tax slab rate - this applies whether you receive the interest as a periodic payout or let it accumulate in a cumulative FD that pays out only at maturity. Banks deduct TDS once interest from that bank crosses a specified annual threshold, but you remain liable for tax on the full amount regardless.
Most banks charge a premature withdrawal penalty, commonly a reduction of 0.5-1% from the interest rate applicable for the period the deposit was actually held, applied retroactively - not just to the remaining tenure. Some specific tenure/scheme combinations may have different penalty structures; check your bank's specific terms.
Check that you've selected the correct compounding frequency to match your specific FD scheme, since quarterly, half-yearly, monthly, and annual compounding all produce slightly different results from the same principal, rate, and tenure. Also confirm whether your bank quotes the rate as a simple annual percentage or uses a different convention.
They serve different purposes. FDs offer flexible tenure (from days to years) and easier access to your money, but interest is fully taxable. PPF offers a 15-year lock-in with much less flexibility, but completely tax-free returns at every stage. Many savers use both - FDs for shorter-term or emergency funds, PPF for long-term, tax-efficient retirement savings.
Most Indian banks offer a preferential rate for senior citizens, commonly 0.25-0.75 percentage points higher than the standard rate for the same tenure. This calculator doesn't apply any age-based adjustment automatically - enter your bank's actual quoted senior citizen rate if applicable.