Advance tax and TDS: paying tax before the year ends

Tax is collected as income arises, not when you file

The return is not when tax is paid. It is when tax is reconciled. Through the year, money has already been reaching the government on your behalf — deducted by payers who never asked you, or paid by you in instalments the law expects you to work out yourself.

Two mechanisms do that collecting, and they exist because of the same problem seen from two sides. Where somebody is paying you, the law puts the duty on them to withhold a slice and send it in — tax deducted at source, or TDS. Where nobody was made responsible, the duty comes back to you, in instalments you are expected to compute yourself — advance tax.

Between them they are meant to leave the return nothing to do but settle a small difference. When the return produces a large number instead, one of the two was quietly failing all year, and which one it was decides whether the shortfall also cost you interest.

What happens after that — how the liability is computed in the first place, which regime you are in, how the rebate and cess sit in the queue — is the sequence set out in income tax, in the order it is actually computed. This page is about the last step of that sequence and the year that leads up to it.

TDS is a stranger's estimate of a tax only your return can compute

A deductor sees one thing: the payment it is making to you. It does not see your other income, your regime, your deductions, your losses carried forward, or the gain you booked in July. It applies a rate the Act prescribes for that kind of payment and deposits the money against your permanent account number — your PAN.

Read that again with the emphasis moved. The rate attaches to the payment, not to the person receiving it. That single design choice is why TDS is wrong in both directions, routinely, and why the direction it is wrong in is predictable.

Take three people who each receive ₹80,000 of bank interest in a year. One has no other income. One is a salaried taxpayer in a middle band. One is in the top band. The bank deducts the identical amount from all three, because the bank is applying a rate to an interest payment and has no idea which of the three it is dealing with. For the first, too much has been taken and only a return will get it back. For the third, nowhere near enough has been taken, and the gap is exactly what advance tax is supposed to catch.

The exception is salary, and it is the reason most salaried people have never thought about any of this. An employer deducting on salary is the one deductor asked to estimate a person's tax rather than a payment's: it collects a declaration of your intended deductions, applies the regime you tell it, and spreads the estimated annual tax across the months. Done properly it lands close. Done on a declaration that ignored your freelance income and your fund redemptions, it lands close to the wrong number.

And there is a whole category of income where no deductor exists at all — not through oversight, but because there is nobody in the transaction to appoint. That is the next section, and it is where the money goes missing.

What TDS cannot reach

Deduction at source requires an identified payer with a duty. Some income has no such payer, and it is not a coincidence that it is the income households most often get wrong.

A gain on an exchange trade has no payer. When you sell shares or redeem fund units, the money reaching you is the proceeds of a sale, not a payment of income to you by somebody who knows it is income. The buyer is anonymous and the registrar is settling a trade. Nobody in that chain has been made responsible for estimating your gain, because nobody in it knows what you paid for the units. Cost of acquisition lives in your records, not theirs. (A non-resident's redemption is treated differently; this is about a resident.)

The test that produces that answer also predicts where the answer flips. Sell a property and there is an identified payer — one named buyer, paying one known sum, on a document that records it — and above a stated price a resident buyer is required to withhold. Note what is withheld even then: a slice of the consideration, not of your gain, because the buyer still has no idea what you paid for the place. So even the case with a deductor does not settle the tax. It only proves the rule: deduction at source needs somebody who can be named and given a duty, and it never has the information to get the amount right.

Three more, each a common shortfall:

• Interest that TDS under-collects. The bank deducted at the prescribed rate on the payment. If your slab rate is higher than that rate, the balance is yours to pay, and nobody will tell you.
• Freelance and consulting fees. A payer does deduct here, but again at a rate fixed for the payment type, against income from which your actual expenses have not yet been subtracted. The deduction and the liability are computed on different bases, so they agree only by accident.
• Rent. A tenant is required to deduct only above a stated payment size. Below it the rent arrives whole, with nothing withheld — which feels like clean income and is in fact income with the tax still attached.

Now the point that surprises people, and it belongs to the interest case rather than the gains case. A cumulative deposit produces taxable income in years when it pays you nothing. The bank credits interest to the deposit annually, withholds on it annually and reports it annually against your PAN, so on the income-tax department's records a five-year deposit that pays out only at maturity has produced income in each of the five years. Tax can therefore be due in a year in which that deposit sent you no cash at all.

How firm is that? Firm enough to plan around, and it is worth knowing why. Annual accrual is what the bank does and what the department's statements assume, so it is the default in every practical sense. Whether an individual may instead offer that interest only in the year of receipt, by following a receipt basis consistently, is a question of the accounting method you are entitled to adopt — a position to take deliberately with an adviser, not a default to drift into, because it produces a mismatch against the reported figure every single year. The underlying accrual mechanism, and why it is the real difference between a deposit and a fund, is worked through in debt funds against fixed deposits.

Three ways tax reaches the government

Same money, three routes, and they differ in who does the arithmetic and what that person can see.

The row that decides most outcomes is the second one. TDS is computed by somebody with almost no information; advance tax is computed by the only person with all of it. The law has not asked a stranger to get your tax right — only to make a down-payment, leaving you to true it up before the year ends.

The last row is the one most often read too generously. A deductor who fails to deduct has its own default to answer for, and that penalty is not yours. But the tax on that income has not moved anywhere: it is still your liability, still due on the same calendar, and the missing deduction means it was never paid on your behalf. Whether your own advance-tax estimate may be reduced by tax that should have been deducted but was not is a separate question, and one worth settling rather than assuming — the assumption that runs in your favour is the expensive one.

The checkpoint clock — why <em>when</em> you earn changes the cost

Advance tax is not one payment at the end of the year. It is a set of dated checkpoints spread through the year, each carrying a cumulative share of the estimated liability. Miss one and interest is charged for the period the shortfall was outstanding. Look up the dates and the shares for the year you are in; they are published, and they are the easy half. The hard half is the property of the rule that the dates themselves do not tell you.

Here is the part worth carrying. Interest runs for the time the money was late, so the same rupee of unpaid tax costs different amounts depending on which checkpoint it should have been paid at. A shortfall at the first checkpoint sits outstanding for most of a year. The identical shortfall at the last sits outstanding for weeks. Same misjudgement, same tax, different bill.

Now put a decision inside that. Suppose you are going to sell a holding this year and book a large gain. The tax on that gain is the same whichever month you sell in — the rate does not care about the calendar. The interest can differ. On the base rule, a gain booked in April is exposed to every checkpoint that follows it, while a gain booked close to the year end leaves barely any year for a shortfall to accrue in.

The relief that may cut the other way

An obvious objection: how could anyone have paid an instalment in June for a gain they booked in November? Tax systems generally recognise that, and Indian law has historically carried a relief for income that could not have been anticipated — capital gains among it — under which the earlier checkpoints are not penalised so long as the tax is paid in the remaining ones.

Whether the Income-tax Act 2025 carries that relief forward, which income it covers and what the deadline for using it is, is a question to settle for your own year rather than assume in either direction. It decides which half of the argument bites. If the relief applies, the late gain is protected, and the discipline it demands is prompt payment at the next checkpoint after the sale rather than at filing. If it does not, an early gain left unpaid is the expensive case, and the exposure grows with every checkpoint you sit through.

Notice what does not move between those two answers. In both, the tax on the gain acquires a deadline inside the financial year in which you sold, and in both, the clock that prices lateness starts at a checkpoint rather than at filing. That is the fact worth having before you sell rather than after: a realised gain comes with a payment date of its own, set by the calendar, and it is earlier than the return. What is contingent is how much an early sale costs relative to a late one. What is not contingent is that the year, not the filing season, is where it is settled.

The trade-off, stated plainly, because there is one. Paying early is not free. Money handed over at the first checkpoint on an estimate that turns out too high sits with the government until the return is processed, and whether anything is paid to you for that period is a separate question worth checking. Over-estimating buys certainty with liquidity. Under-estimating buys liquidity with interest. There is no version where the money is in both places.

What the Act requires, and what your employer and bank actually do

A great deal of what people believe about TDS is not law at all. It is an administrative convention of one organisation, learned from a payroll email and then carried around as a rule. The two are worth separating, because only one of them has consequences you cannot argue with.

Regulation. The Act names the payment types on which tax must be deducted, sets the rate for each, requires the deductor to deposit it against your PAN and to report it. The amount so deposited is a credit against your liability. For a resident, it is never a final settlement of that liability. A route exists to ask the department to authorise a lower or nil deduction where the prescribed rate would plainly over-collect, and a payer can be given a declaration by someone whose income is below the taxable limit.

Practice. Everything below is a convention, not a rule, and it varies between organisations:

• The investment declaration in April and the proof deadline in the last quarter. That deadline belongs to the payroll team, not to the Act. Missing it does not forfeit a deduction you are entitled to — it means your employer deducts more each month and you claim the deduction in your return instead. What you lose is the use of the money through the year, which is a cashflow cost and a real one, but it is not the deduction. Remember also that the deductions being declared — s.123 with its ₹1.5 lakh cap among them — exist only for someone who has opted out of the default regime; the comparison is in the old regime against the new.
• Being placed in the default regime by silence. Under s.202 the new regime applies unless the taxpayer opts out, so an employee who declares nothing is generally deducted on that basis. Not choosing is a choice, and it is made in a payroll portal in April.
• How a bank aggregates your deposits before deciding whether to deduct. That is a systems question, and the answer differs between banks. The safe assumption is none: read the statement rather than reason about the policy.
• “No TDS was deducted, so there is no tax.” Not a rule anywhere. Below a stated payment size a payer is not required to deduct. The income is taxable exactly as before; only the withholding stopped.

Working out whether you owe anything

This is arithmetic, and it is short. It is not advice about what to do with the answer.

1. List the income no deductor can see. Realised capital gains, interest above what was withheld on, rent below the deduction threshold, professional fees net of expenses, anything received in cash.
2. Compute the liability on the whole year's income, in the regime that applies to you, using the sequence in income tax basics. Capital gains go in separately, at their own rates rather than your slab. Listed equity shares and equity-oriented fund units carrying the small levy charged on every exchange trade — the securities transaction tax, or STT — are taxed at 20% under s.196 when held up to 12 months, and at 12.5% under s.198 on such gains above ₹1.25 lakh in the year once held longer than that. Units of a fund that is mostly debt, bought on or after 1 April 2023, fall under s.76 instead and are taxed at slab rates, with the gain always treated as short-term.
3. Subtract the TDS already credited to your PAN, taken from the department's own statements rather than from your payslips — the annual information statement and the tax credit statement, long known as the AIS and Form 26AS, though the names are worth confirming for the year you are filing.
4. Compare what is left against the stated threshold. Below it, no advance tax is required. At or above it, the checkpoints apply.
5. Redo step 1 after every realisation event. An estimate made in April is not an estimate; it is a guess about a year that has not happened. The selling decision and the tax decision are the same decision, taken at the same moment.

Two carve-outs to check rather than assume: resident senior citizens without business income have historically been outside the advance-tax requirement, and taxpayers under a presumptive scheme have had a different schedule. Both need confirming for your year.

One more, and it catches people who are certain they are safe. The default regime carries a rebate of up to ₹60,000 where total income does not exceed ₹12 lakh — but s.156(3) is explicit that the rebate cannot shelter special-rate income such as s.198 long-term gains. So a modest earner who books a large equity gain can owe real tax while believing their total income keeps them clear. They are also, by construction, the person with no deductor. The two failures land on the same taxpayer, in the same year, and neither one announces itself.

Six errors, each traceable to one of the mechanisms above

1. Treating TDS as the tax. It is a credit computed by someone with one line of your information. The reconciliation is yours.
2. Selling in April and thinking about the tax in July next year. The gain acquired a payment deadline the day it was realised, and it is not the filing date.
3. Assuming a big fixed-deposit book is handled. The bank deducted at the rate for an interest payment. A taxpayer in a higher band is short by the difference, every year, silently.
4. Forgetting the interest accruing inside a cumulative deposit. No cash arrived, the income is on record for the year anyway, and no payslip or bank credit will remind you.
5. Paying the whole estimate at the last checkpoint. If interest runs from each checkpoint, arriving late at three of them and on time at one is not the same as being on time.
6. Fixing a TDS mismatch inside the return. If a deductor reported the wrong PAN or the wrong amount, the credit is missing at source; overriding the figure in your own return does not create it. That correction is made with the deductor.

None of the six is exotic. Four of them — the first, third, fourth and sixth — share one root: the belief that somebody else is keeping the score. For salary alone, roughly true. For a household with a gain, a deposit ladder and a side income, nobody is. The other two are timing errors of a different kind: the tax was never in doubt, only the date on which it was owed.

The part of this that is a records problem

Almost everything above needs facts rather than judgement, and the fact people reconstruct worst from memory is the one an estimate depends on: what was bought, when, and at what price.

The holding-period line at 12 months decides whether s.196 or s.198 applies to a fund sale, and it turns on acquisition dates. FNOTrader's Mutual Funds app runs on the full published history of daily per-unit scheme values from AMFI — the net asset value, or NAV — around 34 million rows of it, and for any scheme and period reports invested amount against value alongside the return on cashflows landing on irregular dates, which is XIRR. It does not compute anybody's tax. What it holds is the dated, priced record a gain computation has to start from — and in March it is that record, not the rate, that people cannot reconstruct. The computation itself, and the head the gain belongs to, are in capital gains tax explained.

Nothing here is tax advice, and FNOTrader is not a chartered accountant, a tax practitioner or a SEBI-registered investment adviser. The figures — dates, percentages, thresholds, rates — change; the shape of the rule is what is worth carrying between years.

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