FD Calculator: Know Your Exact FD Maturity Amount
By LegalDev India Tax Team
FD Calculator: Calculate Fixed Deposit Maturity Amount and Interest
An FD calculator calculates the fixed deposit's maturity value and total interest by applying the bank's compounding frequency to the deposit amount, rate and tenure. Deposit ₹1,00,000 at 7% pa, compounded quarterly for one year, and your matured amount is around ₹1,07,186, which is ₹7,186 in interest before TDS.
Most users log in to the bank's FD page, input a number, then leave more confused than they were before. The bank shows a rate. It shows a lump-sum. It never explains why two FDs advertised at the same "7%" might put different amounts to your account. This page explains the formulas, three example calculations, and how TDS works, which most calculators conveniently forget.
What Is an FD Calculator?
It's a tool that takes four inputs, deposit amount, interest rate, tenure and compounding frequency, and outputs two numbers: what you'll get at maturity, and how much of that is interest. It's nothing more mysterious than that. It saves you the compound-interest arithmetic needed every time you want to test a different amount or tenure.
Inside, it's simply performing the same calculation the bank uses to price the deposit in the first place. The value of this tool isn't the math. It's being able to try five scenarios in two minutes rather than working them out on paper.
How Does an FD Calculator Work?
You feed in your numbers and it applies whatever compounding method the bank actually does. Quarterly is standard for the scheduled commercial banks in India; some NBFCs and post office schemes use annual or half-yearly compounding instead. The more often interest compounds, the more gets reinvested back into your principal with each cycle, which is precisely why a 7% rate compounded quarterly edges out 7% compounded annually, even though the "rate" on paper is identical.
For tenures less than a year, many calculators switch over to a simple-interest formula instead, as that's how short FDs are generally priced. Both formulas are covered below.
Who Should Use an FD Calculator?
Salaried individuals saving a bonus or year-end sum that want the exact number before locking it in
Senior citizens weighing the extra interest banks extend to them, which is often the biggest factor in retirement income planning
Conservative investors choosing an FD over a debt mutual fund or the Post Office Time Deposit
Anyone comparing two banks on the same deposit amount. A 0.25% gap seems trivial until it compounds over three or five years
Anyone who wants to actually understand the maturity certificate their bank gives them
How to Use the FD Calculator
Get the inputs right and the output takes care of itself. Get the compounding frequency wrong and the whole calculation quietly drifts off.
FD Calculator Inputs
| Input | What to Enter | Why It Matters |
|---|
| Deposit amount | The lump sum you're investing | Bigger deposits push your TDS exposure higher |
| Annual interest rate | Your bank or NBFC's current quoted rate, as % per annum | Use today's card rate, not one from last year |
| Tenure | Deposit period in days, months or years | Longer isn't better right now, look at the bracket |
| Compounding frequency | Quarterly, monthly, half-yearly or annual | Decides how often interest gets added back before the next calculation |
| Interest payout option | Cumulative (reinvested) or periodic payout | Changes whether you're measuring growth or a fixed recurring sum |
FD Calculator Results
Three numbers come out the other end:
- Maturity amount - what you get, or what reinvests, at the end of the tenure
- Total interest earned - maturity amount minus your original deposit
- Effective annual yield - your true annualised return once compounding is added in, which tends to be a little higher than the rate quoted on the brochure
Step-by-Step Example
Say you deposit ₹2,00,000 for 2 years at 7% pa, quarterly compounding, cumulative.
1
Quarterly rate: 7% ÷ 4 = 1.75%
2
Compounding periods: 2 years × 4 = 8
3
Formula: A = 2,00,000 × (1 + 0.0175)^8
4
(1.0175)^8 approximates to 1.148882
5
Maturity ≈ ₹2,29,776. Interest earned ≈ ₹29,776.
A calculator simply performs steps 1 through 5 instantaneously, for whatever amount you throw at it.
FD Calculator Example: ₹1,00,000 Fixed Deposit
All three examples below run at 7% pa, so you can see how the payout differs for an identical deposit and rate. Swap in your own bank's quoted rate after settling on a tenure.
Example 1: 1-Year FD at 7% Interest
Cumulative, quarterly compounding: A = 1,00,000 × (1 + 0.07/4)^4 ≈ ₹1,07,186. Interest: ₹7,186. Well under the ₹50,000 annual TDS threshold for non-senior citizens (FY 2025-26), so no TDS, though the interest is still taxable in your hands.
Example 2: 3-Year Cumulative FD at 7% Interest
A = 1,00,000 × (1 + 0.07/4)^12 ≈ ₹1,23,144. Interest over 3 years: ₹23,144. Here's the part nearly every calculator leaves out: even though you don't touch a rupee of this until maturity, the bank still works out accrued interest separately per year, purely to determine TDS. If your total interest across all FDs with that bank crosses the threshold in any year, TDS gets deducted, sometimes from another account, even though you haven't received the interest yet.
Example 3: Monthly Interest Payout FD
A monthly-payout FD doesn't reinvest anything, so there's no compounding. On ₹1,00,000 at 7%: monthly payout = (1,00,000 × 7) / (12 × 100) ≈ ₹583 a month, before TDS. Add it up over a year and you get ₹7,000, a little less than the ₹7,186 the cumulative version earns, because none of the money paid out has a chance to earn anything further.
FD Maturity Table: Deposit Amount, Tenure and Interest
One consistent assumption runs through this table: 7% pa, quarterly compounding, cumulative FD, across three deposit sizes and three tenures so the numbers are actually comparable to each other. Swap in your bank's current rate for an exact figure.
₹50,000 FD Returns
| Tenure | Maturity Amount | Interest Earned |
|---|
| 1 year | ₹53,593 | ₹3,593 |
| 3 years | ₹61,572 | ₹11,572 |
| 5 years | ₹70,739 | ₹20,739 |
₹1,00,000 FD Returns
| Tenure | Maturity Amount | Interest Earned |
|---|
| 1 year | ₹1,07,186 | ₹7,186 |
| 3 years | ₹1,23,144 | ₹23,144 |
| 5 years | ₹1,41,478 | ₹41,478 |
₹5,00,000 FD Returns
| Tenure | Maturity Amount | Interest Earned |
|---|
| 1 year | ₹5,35,930 | ₹35,930 |
| 3 years | ₹6,15,720 | ₹1,15,720 |
| 5 years | ₹7,07,389 | ₹2,07,389 |
See the ₹5 lakhs row for 5 years: the maturity amount crosses ₹7 lakh, which is well over the ₹5 lakh DICGC insurance ceiling per depositor per bank. Parking a big sum for several years? Spreading it across two or three banks keeps the whole amount insured, instead of assuming every bank would cover it.
Cumulative FD vs Monthly Interest FD
Key Differences
| Factor | Cumulative FD | Monthly Interest FD |
|---|
| Interest handling | Reinvested, compounds | Paid out monthly, no compounding |
| Total return, same rate | Higher | Lower |
| Cash flow | None until maturity | Regular monthly income |
| Best suited for | Growth-focused savers | Retirees needing monthly income |
Which FD Option Should You Choose?
If you don't need the interest for daily expenses, go cumulative. Compounding will widen the ₹7,186 versus ₹7,000 gap from earlier the longer you stay invested. If you're relying on the FD for monthly expenses, which many retirees do, the monthly payout trades a slightly smaller total return for a regular income stream. For most people in that position, the predictability is worth more than the extra few hundred rupees you'd get compounding.
Factors That Affect FD Returns
Deposit amount
Bigger deposit earns more interest at the same rate, but it raises the chance that your annual interest crosses the TDS threshold. Think about it before committing a big lump sum to a deposit.
Interest rate
Even a 0.25 to 0.50 percentage point gap between two banks turns into real money over three to five years. Reason enough to check current rates before booking, loyalty to your usual bank aside.
Tenure
Longer doesn't necessarily mean higher. As of October 2026, some banks are pricing their 1-2 year deposits close to, or even above, their 5-year rates, a reflection of where the RBI's policy rate cycle is at. Look at the bracket rather than assuming a pattern.
Compounding frequency
Quarterly compounding, the Indian norm, beats annual compounding at the same quoted rate every time, as interest gets added back four times a year instead of once. The gap is small over one year but widens the longer the tenure.
Senior citizen benefit
Most banks add roughly 0.25 to 0.75 percentage points over the standard rate for depositors of 60 and above, with a small extra bump at some banks for those over 80. The exact premium varies by bank and tenure, so check the specific senior-citizen rate card rather than assuming a flat add-on.
Taxation on FD Interest
Is FD Interest Taxable?
Yes. Interest on FDs is "Income from Other Sources", gets added to your total income, and is taxed at your slab rate. No special concessional rate like for long-term equity gains. This is true whether or not TDS was actually deducted. That last part is a trip-up point: no TDS doesn't mean no tax.
TDS on Fixed Deposit Interest
From FY 2025-26 (effective from 1 April 2025, Budget 2025), banks deduct 10% TDS on FD interest once it crosses ₹50,000 a year for depositors under 60, and ₹1,00,000 for senior citizens, both raised from the earlier ₹40,000 and ₹50,000 levels. Company or NBFC FDs have a lower threshold, at ₹10,000. No valid PAN on file? TDS jumps to 20% (under Section 206AA). Once you cross the threshold TDS applies to the entire year's interest, not just the amount over the line.
From 1 April 2026, this falls under the new Income-tax Act, 2025, commonly referenced as Section 393, though the thresholds and mechanics above remain the same. Cross-check the exact clause number against the Income Tax Department's current notifications before citing it formally.
NRIs play by different rules. NRO FD interest attracts TDS from the first rupee, no threshold at all, generally at 30% plus surcharge and cess, under Section 195 rather than 194A. NRE FD interest, on the other hand, is fully tax-exempt in India with no TDS whatsoever.
How to Avoid TDS on FD Interest
TDS isn't an extra tax. It's an advance collection you can claim back at return-filing time if your final liability turns out to be lower. Two legitimate routes reduce or skip the outset deduction entirely:
- Form 15G - for anyone under 60 whose total income, FD interest included, stays below the basic exemption limit, so the final tax is zero
- Form 15H - the senior-citizen equivalent, again same test: no tax payable on total income for the year
Spreading deposits across banks doesn't lower your actual tax bill, but it keeps any one bank's interest under that bank's own threshold, useful for managing cash flow, not for dodging tax, since every rupee of interest still needs declaring in your ITR.
If you submit either form when your income actually crosses the exemption limit, you're looking at a penalty for the false declaration. Only use them if you're sure your final liability will actually be zero.
Common FD Calculator Mistakes to Avoid
Ignoring compounding frequency
Two FDs can both show "7%" and still pay differently if one compounds quarterly and the other annually. Check and enter into the calculator the actual method your bank uses, and not whatever you assume.
Ignoring TDS on interest
The figure shown in a calculator is gross, before tax. For a cumulative FD, remember TDS gets deducted every financial year on accrued interest, which is a real cash outflow from your account even on a deposit you haven't touched. Plan for it instead of getting blindsided later.
Comparing FDs without tenure matching
Stacking a bank's 1-year rate against a competitor's 5-year rate, and picking whichever number looks bigger, is not a fair fight. Interest-rate cycles price shorter and longer tenures on entirely different logic at any given moment. Compare the same tenure bracket across banks, and separately work out which tenure actually suits your own needs.
Frequently Asked Questions
No. It's fully taxable under "Income from Other Sources", TDS or no TDS, and needs reporting in your ITR every year it accrues for cumulative FDs, not just the year you receive it.
₹50,000 a year for anyone under 60, ₹1,00,000 for senior citizens (per bank), per FY 2025-26, effective since 1 April 2025 under Budget 2025.
Yes, through Form 15G (under 60) or Form 15H (60 and above), but only submit either if your actual final tax liability for the year genuinely turns out to be zero.
Up to a point. DICGC insures deposits (FDs included) up to ₹5 lakh per depositor per bank, principal and interest combined. Anything above that in one bank is uninsured, hence large sums often get split across two or three banks.
Cumulative FD reinvests the interest so it compounds till maturity. Non-cumulative FD pays out the interest monthly, quarterly or annually instead, trading some total return for a steady income.
Usually, yes, typically 0.25 to 0.75 percentage points above standard, though it varies by bank and tenure. Check the specific rate card rather than assuming a flat bump.
Most banks run a simple (principal × rate) ÷ 12 each month. No compounding, as the interest is paid out rather than re-invested.
If the total income including FD interest stays under the basic exemption limit, your final liability can land at zero. File Form 15G or 15H anyway to stop TDS at source, and still declare the interest when you file your return.
Yes, usually through an NRE or NRO account. NRE interest is tax-free here, with no TDS; NRO interest gets taxed from rupee one, generally at 30% plus surcharge and cess.
Most banks apply a premature-withdrawal penalty, somewhere around 0.50-1%, and recalculate your interest at whatever rate applied for the period you actually held it, not the rate you initially booked at.
Depends on what you're starting with. FD suits a lump sum sitting idle; RD suits building one up through fixed monthly contributions. Neither is objectively better, it's a function of the hand you have.
Almost always compounding frequency. Quarterly compounding at an identical nominal rate edges out annual compounding every time, given enough tenure.
Yes, most banks offer a loan or overdraft against an existing FD. This sidesteps the premature-withdrawal penalty entirely, and the original deposit earns at its booked rate in the meantime.