EaseValueThree products can quote almost the same return and leave you with very different amounts of money. A fixed deposit is taxed every year as the interest accrues, whether or not you withdraw a rupee. A debt fund is taxed at the same slab rate, but only when you sell — so the tax you would have paid each year stays invested and earns for you. An arbitrage fund is taxed as equity, on a different rate scale entirely. This calculator runs all three on the amounts, holding period and returns you enter, and shows what you keep after tax. It also isolates one number most comparisons never show: what the deferral alone is worth, by running a debt fund at the deposit's own rate so the only difference left is timing. This is a tax computation, not investment advice — the returns are assumptions you choose, and no product is being recommended.
How it’s calculated
- Enter the amount you are parking and how long you expect to hold it. The holding period matters more than most people expect, because deferral compounds — a difference that is trivial over one year can be substantial over ten.
- Enter the pre-tax return you expect from each of the three: the fixed deposit, the debt fund and the arbitrage fund. These are your assumptions. Nothing here predicts what any product will return, and setting all three to the same number is a perfectly sensible way to isolate the tax effect on its own.
- Enter your other taxable income for the year, before this investment. This decides the slab rate that applies to the deposit interest and the debt-fund gain, so it drives the whole comparison.
- Choose the regime you file under. The old-regime basic exemption and the deduction for interest on deposits (Section 153, formerly Sections 80TTA and 80TTB) apply only if you are in the old regime.
- Enter your age and your old-regime deductions. Age changes the basic exemption available to you, and it also changes the deduction ceiling for interest on deposits.
- Check the old-regime basic exemption and the deposit-interest deduction shown. Both are editable — if a limit has been revised, set it to the figure in force rather than trusting the default.
- Set the capital-gains rates for the arbitrage fund: the long-term rate, the short-term rate, and the annual long-term exemption. Whether your holding qualifies as long-term or short-term is decided by the holding period you entered.
- Enter any long-term equity exemption you have already used this year on other sales. The annual exemption is shared across everything you sell in the year, so exemption spent elsewhere is not available here.
- Set the TDS threshold and rate for the deposit. Tax deducted at source is not an extra cost — it is your own tax collected early — but it changes your cash flow, and the calculator shows the amount separately.
- Read the verdict row first. It names which of the three leaves you with the most money after tax on your inputs, and by how much.
- Read the three after-tax rows beneath it. Each shows the gain, the tax, and the value at the end, so every headline figure reconciles to the arithmetic that produced it rather than appearing from nowhere.
- Read the deferral row. It runs a debt fund at the deposit's own rate, so the returns are identical and the only remaining difference is when the tax is paid. Whatever that row shows is the value of timing alone.
- Read the flip row. It reports the income at which your ranking changes — useful if your income is near that point, or if you expect it to move next year.
- Take the output as arithmetic, not as advice. Liquidity, risk, credit quality and your own circumstances are outside this calculation, and they routinely matter more than the tax difference.
The headline rate is not what you keep
Ask most people to compare a fixed deposit paying seven per cent with a debt fund they expect to return seven per cent, and they will tell you the two are the same. On a spreadsheet that ignores tax, they are. In your bank account they are not, and the gap widens every year you hold them.
The reason is not the rate. It is when the tax is charged. Interest on a fixed deposit is taxable in the year it accrues. It does not matter whether you withdrew it, whether the deposit is cumulative, or whether you ever saw the money — if the bank credited interest for the year, that interest is your income for the year and tax is due on it. A debt fund works differently. It throws off no annual income in your hands. The value simply accumulates inside the fund, and the tax arrives in one piece in the year you redeem.
That difference sounds procedural. It is worth real money. Every rupee of tax you do not pay this year stays invested and earns a return for you next year, and the year after. Over a long holding period that compounding on deferred tax becomes a meaningful part of what separates the two products — at the same headline rate, with the same risk of the underlying paper, and with no cleverness on your part beyond the choice of wrapper.
The calculator above isolates exactly this. One of its rows runs a debt fund at the deposit's own rate — not at some more flattering assumption — so the returns are identical by construction and the only variable left is the timing of the tax. Whatever that row reports is what deferral alone is worth on your numbers.
How each of the three is actually taxed
Fixed deposit interest is ordinary income. It is added to everything else you earn and taxed at your slab rate. There is no special rate, no indexation and no concession for holding it a long time. If you are in the thirty per cent bracket, roughly a third of every rupee of interest is not yours, and that is settled annually rather than at the end.
If you are in the old regime, the deduction for interest on deposits under Section 153 (formerly Sections 80TTA and 80TTB) can shelter part of that interest. The ceiling is higher once you cross the senior-citizen age threshold, which is why age is an input above. In the new regime that deduction is not available at all, and the calculator reflects this the moment you switch regimes.
Debt-fund gains are taxed at your slab rate too, so the rate is no better than the deposit. What differs is the trigger: nothing is taxable until you redeem. Until then the whole amount, including the part that will eventually go to tax, remains invested and working.
Arbitrage funds are treated as equity for tax, which puts them on a different scale — a long-term rate, a short-term rate, and an annual exemption for long-term equity gains. Whether your holding is long-term or short-term depends on how long you hold it, which is why the holding period you enter changes not just the size of the gain but the rate applied to it. All three of those figures are editable above, because rates and exemption limits change and a stale default is worse than no default.
One consequence deserves stating plainly: because the deposit and the debt fund are both taxed at slab, your bracket does not change the ranking between those two. It changes the size of the gap. But it can change the ranking against the arbitrage fund, whose rates do not move with your income. That is what the flip row above is reporting.
Why the deposit is taxed on money you never received
This is the single most common surprise, and it is worth being precise about. A cumulative fixed deposit pays nothing out until maturity. The interest is credited to the deposit and compounds. Many people therefore assume the tax arrives at maturity along with the cash. It does not. The interest is your income in the year it accrues, and it is taxable in that year.
So a five-year cumulative deposit generates five years of taxable income while paying you nothing at all. The tax on the first four years has to come from somewhere else — your salary, your savings, some other liquidity. That is a genuine cash-flow cost and it is invisible in any comparison that only looks at the maturity value.
It also means the "safe" option carries an administrative burden the others do not. The income has to be picked up in your return every year, and the interest figure has to be reconciled against what the bank has reported, not simply omitted because no money arrived. Interest that never reached your account is a frequent source of mismatch notices, precisely because it feels like it should not be taxable yet.
The debt fund has none of this. There is nothing to report, nothing to reconcile and no tax to fund until the year you actually sell — at which point the money to pay the tax is in your hands, because you just redeemed.
Tax deducted at source is not an extra cost
Banks deduct tax at source on deposit interest once it crosses a threshold for the year. The threshold and the rate are both editable above, because they are revised from time to time and a stale figure would quietly distort the comparison.
It is worth being clear about what this deduction is and is not. It is not an additional tax and it is not a penalty. It is a part-payment of the tax you owe anyway, collected early, and it is credited against your final liability when you file. If too much was deducted you get it back as a refund; if too little, you pay the balance.
What it does change is your cash flow, and occasionally your working capital. Money deducted in June is money you do not have until your refund arrives, which may be well over a year later. For a large deposit that timing gap is real, and it is a further respect in which the deposit route ties up money that the fund route does not.
The calculator shows the deducted amount as its own row rather than folding it into the tax figure, so you can see the cash-flow effect separately from the actual cost. If the deducted amount looks large relative to your final liability, that is a signal to check whether a declaration to the bank is appropriate in your circumstances.
Where the ranking flips, and why it moves
Because deposit interest and debt-fund gains are both taxed at slab rates, your income bracket cannot reverse the order of those two. Deferral favours the fund at every bracket; a higher bracket simply makes the advantage bigger, because there is more tax being deferred.
The arbitrage fund behaves differently. Equity rates do not rise with your income, so as your other income increases, the slab-taxed options get relatively worse while the arbitrage fund's treatment stays where it is. Somewhere on that scale the ranking changes, and the calculator reports the income at which it does on your particular inputs.
This matters most if you are near that point, or if your income is about to move — a bonus year, a property sale, a business that has just turned profitable, or conversely a year out of work. The right answer for a given year is not automatically the right answer for the next one, and a comparison that ignores your bracket is not really a comparison at all.
The annual long-term equity exemption adds a second moving part. It is shared across everything you sell in the year, so if you have already used it elsewhere it is not available here — which is why the calculator asks how much you have used. Two people with identical investments can get different answers purely because one of them sold something else in March.
Holding period changes the rate, not just the size of the gain
For the deposit and the debt fund, holding longer means more accrued interest or a larger gain, but the rate that applies does not change — both are taxed at your slab rate whether you hold for one year or ten. The arbitrage fund is different. Because it is taxed on the equity scale, the length of your holding decides which rate applies at all, and the gap between the short-term and long-term rate is wide enough that it can decide the whole comparison.
This creates a threshold effect that has no equivalent on the other two products. Redeeming a little before the long-term boundary and a little after it are not marginally different outcomes; they are taxed on different scales. Both rates are editable above precisely so that you can test the two cases against each other rather than assuming the default applies to you.
The annual long-term equity exemption compounds this. It applies only to long-term gains, so a holding that falls short of the boundary loses both the better rate and the exemption in one step. If your intended holding period is anywhere near the line, it is worth running the calculator twice — once on each side of it — before deciding when to redeem.
It is also worth being honest about how firm your intended holding period really is. A period you have entered because it produces a good answer is not a plan. If there is a realistic chance you will need the money earlier, model that shorter period, because the tax scale that will actually apply is the one attached to when you really sell, not when you meant to.
Reading the output without fooling yourself
Every figure in the result reconciles to the arithmetic above it. Each product shows its gain, then the tax charged on that gain, then the value at the end — so if a number looks surprising you can follow it back rather than having to trust it. That is deliberate: a calculator that produces a confident headline with no visible working is very hard to sanity-check, and the errors it hides tend to be the expensive kind.
Treat the verdict row as the smallest part of the output. It tells you which product wins on your inputs, but the interesting information is usually by how much, and whether that margin is large enough to be worth acting on. A difference of a few thousand rupees over ten years is, in practice, noise against the assumptions you fed in — it is not a reason to move money.
Be especially careful with the returns you enter. They are assumptions, and the comparison is only as sound as they are. Entering an optimistic figure for one product and a cautious one for another will produce a clear-looking answer that reflects nothing except the gap between your two guesses. If you want to see the tax effect cleanly, set all three to the same rate and read the deferral row.
Finally, a genuinely useful test: change one input at a time and see whether the answer holds. Move your other income up and down a bracket. Shorten the holding period. Change the returns by a percentage point. If the verdict survives all of that, it is a robust answer. If it flips every time you touch something, the honest conclusion is that these products are close enough on tax that the decision should be made on other grounds — risk, liquidity and what the money is actually for.
What this calculation deliberately leaves out
Everything above is arithmetic about tax. It is not a view on which product you should hold, and it cannot be, because the things that usually decide that question are not tax questions at all.
Risk is not modelled. A deposit with a bank and a debt fund holding corporate paper do not carry the same risk, and an arbitrage fund carries different risk again. The calculator takes whatever returns you type in and treats them as certain. Real returns are not certain, and the products differ in how uncertain they are. If you enter the same return for all three, you have assumed away precisely the difference that matters most.
Liquidity is not modelled. Breaking a deposit early usually costs you a penalty on the rate. Funds can be redeemed but may carry exit loads, and the tax treatment can change with the holding period — which the calculator does capture, but only for the period you actually enter. If there is a realistic chance you will need the money sooner, model that period rather than the one you hope for.
Your wider position is not modelled. Carry-forward losses, other capital gains, advance-tax obligations and the rest of your return can all change the real answer. The calculator sees only what you type into it.
Read the output for what it is: a clear, honest comparison of the tax arithmetic under assumptions you chose. It is a tax computation, not investment advice, and this firm is a chartered accountancy practice rather than a licensed investment adviser. Where the sums are large or the decision is finely balanced, the sensible next step is a conversation about your whole position rather than a bigger spreadsheet.
Frequently asked questions
Is fixed deposit interest taxable even if I do not withdraw it?
Yes. Interest is taxable in the year it accrues, not the year you receive it. A cumulative deposit that pays nothing until maturity still produces taxable income every year, and the tax on it has to be funded from elsewhere. This is the single most common surprise for deposit holders, and it is a real cash-flow cost that maturity-value comparisons hide entirely.
If the rate of tax is the same, how can a debt fund beat a deposit?
Because the tax is charged at a different time. Deposit interest is taxed annually as it accrues; debt-fund gains are taxed only when you redeem. The tax you have not yet paid stays invested and earns for you. At the same headline return and the same slab rate, that timing difference alone produces a different final amount — and the deferral row above quantifies it on your numbers by running a debt fund at the deposit's own rate.
Does my income bracket change which one wins?
It changes the size of the gap between the deposit and the debt fund, but not their order, because both are taxed at slab rates. It can change the ranking against the arbitrage fund, which is taxed on the equity scale and does not move with your income. The flip row above reports the income at which your ranking changes.
Do I get the deduction for interest on deposits in the new regime?
No. The deduction under Section 153 (formerly Sections 80TTA and 80TTB) is available only in the old regime, as is the higher basic exemption for older taxpayers. Switch the regime selector above and you will see the deposit result change accordingly. If you file under the new regime, deposit interest is taxable from the first rupee.
Is the tax deducted by my bank an extra cost?
No. It is part of your own tax collected early and credited against your final liability when you file. If more was deducted than you owe, the excess comes back as a refund. What it does cost you is the use of that money in the meantime, which can be a long wait — so the calculator shows it as a separate row rather than treating it as a cost.
Why does the calculator ask how much long-term equity exemption I have already used?
Because the annual exemption is shared across everything you sell in the year, not granted separately for each investment. If you have already used it on another sale, it is not available for the arbitrage fund as well. Two people with identical holdings can get different answers purely because one of them sold something else earlier in the year.
Should I set the same expected return for all three?
It is a useful thing to do if your aim is to see the tax effect on its own, because it removes the return assumption as a variable and leaves only the tax treatment. Just be aware of what you have assumed: the three products do not carry the same risk, so equal returns is a deliberate simplification rather than a realistic forecast.
Is this investment advice?
No. It is a tax computation run on assumptions you supply, and no product is being recommended. Risk, credit quality, liquidity, exit loads and your wider tax position are all outside the calculation, and in practice they often matter more than the tax difference. This firm is a chartered accountancy practice, not a licensed investment adviser.
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