Advance Tax for NRIs: Who Actually Pays, the 15/45/75/100 Schedule, and How to Dodge 234B and 234C Interest

You sold a slice of Indian equity mutual funds in May for a gain of Rs 18,00,000, the long-term tax on it is roughly Rs 2,25,000, and the platform deducted nothing, or deducted far too little, because the way an AMC withholds from an NRI redemption is nothing like the way a bank withholds 30% from your NRO interest. You are now, whether you noticed or not, an advance tax payer. The Income Tax Department does not wait until you file in July 2026 to collect that money. It wanted the first slice by 15 June 2025, and it charges interest, automatically and without a notice, on every instalment you were late on.

This is the corner of the Indian tax system that catches NRIs most reliably, precisely because so much of your other India income already carries TDS that you assume the whole thing is settled at source. It usually is, right up until a capital gain or an under-deducted rent pushes your net liability over Rs 10,000, and the duty to pay in four instalments switches on with nobody telling you.

The 30-second answer: If your estimated India tax for the year exceeds Rs 10,000 after subtracting TDS, Section 208 makes advance tax mandatory, and being an NRI gives no exemption. Pay in four cumulative instalments: 15% by 15 June, 45% by 15 September, 75% by 15 December, 100% by 15 March. TDS already deducted shrinks the base. Miss an instalment and Section 234C charges 1% per month on the shortfall (3% per quarter on the first three, 1% on the last). Pay under 90% of the bill by year-end and Section 234B runs at 1% per month from 1 April until you clear it. File the return late with tax still owing and Section 234A adds another 1% per month. A foreign tax credit at home does not reduce any of this, and the 234C proviso forgives only late-arriving capital gains and dividends.

Filing the return that goes with all this? The advance tax you pay through the year is reconciled against your final bill when you file. See the master walkthrough, ITR filing for NRIs, AY 2026-27, for how the instalments, TDS, and self-assessment tax come together on ITR-2.

This guide assumes you already know your residency status and that NRO interest is taxed at slab while NRE interest is exempt; if not, start with the residency guide. What follows is the part that costs real money: who genuinely has to pay, why the four percentages are cumulative and not additive, how a foreign tax credit quietly fails to protect you, the exact interest arithmetic under 234B, 234C, and 234A with a full computation, the 234C relief for gains that land late, and how to pay from Dubai or London without an Indian net-banking login.

Who must pay, and why NRIs trip on exactly one kind of income

The rule lives in Section 208. If your estimated income tax for the financial year, after reducing TDS and TCS, comes to Rs 10,000 or more, you must pay it in advance during the year rather than as a lump sum at filing. The threshold is Rs 10,000 of net liability, not Rs 10,000 of income, and there is no NRI carve-out. The one genuine exemption in Section 207, for a resident senior citizen with no business income, is not available to you, because it is conditioned on residence.

The structural reason NRIs get caught is that India already taxes most of your income at source. NRO account interest carries TDS at 30% plus surcharge and cess, the highest withholding any resident faces. Rent paid by a compliant tenant is deducted at 30%. Dividends from Indian companies are deducted at 20% before they reach you. For these streams the TDS routinely covers, or overshoots, the actual bill, your net liability after TDS sits near zero, and advance tax never arises. That is why a typical NRI goes years without a single advance tax payment and reasonably concludes the system handles itself.

It does, until one income type breaks the pattern: capital gains on listed shares and equity mutual funds. Here the withholding is unreliable. When an NRI redeems equity mutual funds, the AMC deducts under Section 195 read with Section 115AD, but it deducts on its own computation of your gain, which can be wrong, too low, or, for SIP units with scattered cost bases, simply incomplete. Gains on listed shares sold on the exchange generally carry no TDS at all, because the broker is not a deductor for an on-market equity sale the way an AMC is for a redemption. So a real, often large, tax liability lands with little or nothing withheld against it, and the full burden of paying it on time falls on you. The same gap opens with rent from an individual tenant who never operates TDS, and with NRO interest where you have already cut the 30% to a treaty rate using a Tax Residency Certificate, leaving the difference between the treaty rate and your actual slab uncovered.

The honest framing is one calculation. Take every India income stream, work out the full-year tax including surcharge and cess, then subtract only the TDS you are genuinely confident will be deducted. If the leftover is Rs 10,000 or more, you are an advance tax payer for that year, and the four dates below are yours.

The 15/45/75/100 schedule, and the word "cumulative" that everyone misreads

Advance tax for individuals is paid in four instalments. For FY 2025-26, assessment year AY 2026-27, the dates and cumulative targets are:

Instalment	Due date	Cumulative advance tax payable
First	15 June 2025	15% of the year's net tax
Second	15 September 2025	45% of the year's net tax
Third	15 December 2025	75% of the year's net tax
Fourth	15 March 2026	100% of the year's net tax

The single most misread feature is that the percentages are cumulative, not incremental. By 15 September you are not paying 45% on top of the 15%. You are making sure the total paid by that date reaches 45% of the full-year figure. So the cash that actually leaves your account at each date, starting from zero, is 15%, then a further 30%, then a further 30%, then the final 25%. People who read the table as 15 plus 45 plus 75 plus 100 either overpay wildly or, more dangerously, pay the wrong amount at each gate and trigger 234C on a shortfall they did not know they had.

For income earned in FY 2026-27 the calendar shifts forward exactly one year: 15 June 2026, 15 September 2026, 15 December 2026, and 15 March 2027, at the identical 15, 45, 75, and 100 percent steps. Today, in June 2026, the 15 June 2026 first instalment for the current year is the one in front of you, while every FY 2025-26 instalment is behind you and now feeds the return you file by 31 July 2026. A note on that deadline, because it changed: the Finance Act 2026 split the non-audit due date, leaving ITR-2 (most NRIs) at 31 July 2026 but pushing ITR-3 and ITR-4 for non-audit business and professional cases to 31 August 2026. If you file ITR-2, ignore the August date you may see quoted; yours is still July.

One more point of fact that the table cannot show. The "tax for the year" against which these percentages run is your tax after reducing TDS. You compute the full-year tax, subtract expected TDS, then apply 15, 45, 75, and 100 percent to that net number. TDS is not a fifth payment stacked on top. It is a credit that shrinks the base before the instalment percentages ever touch it.

How TDS shrinks the base, and the one TDS you must not assume

This is where the relief lives for most NRIs, so precision matters. Advance tax is computed on net tax liability: total estimated tax for the year minus the TDS and TCS deducted or collected on your income. Work it in order. Estimate total India income across all heads. Compute the tax on it, including surcharge and the 4% health and education cess. Subtract the TDS you reasonably expect across the year. The remainder is your net liability; if it is Rs 10,000 or more, the instalment percentages run on it.

Put the mechanic on numbers before the full examples. Say your total India tax for the year is Rs 1,40,000 and you expect Rs 90,000 of TDS on NRO interest and dividends. Net liability is Rs 50,000, above the threshold, so advance tax applies on Rs 50,000: Rs 7,500 by 15 June, a cumulative Rs 22,500 by 15 September, Rs 37,500 by 15 December, and the full Rs 50,000 by 15 March. The Rs 90,000 of TDS does its work in the background and never enters the instalment math except as the deduction that produced the Rs 50,000.

The trap is timing and trust. TDS on NRO interest is deducted through the year, so assuming it is fair. But if you are counting on TDS that may never be operated, the classic case being a small individual tenant who you suspect will not bother, do not net it off. Treat that rent as undeducted and pay advance tax on it. If the TDS never lands, you have underpaid, and the interest sections below bite on the shortfall you optimistically assumed away. The asymmetry is the whole point: assuming TDS that fails to materialise costs you 1% a month; paying a touch extra costs you nothing but a refund with interest under Section 244A.

Why a foreign tax credit at home does not save you, and where it specifically fails

Here is the deepest NRI-specific point in this guide, and the one most US, UK, and Canada readers get wrong. If you are taxed on the same Indian gain both in India and at home, you expect to claim a credit and net out the double tax. You can. But that credit lives entirely on your home country's return and does nothing to your Indian advance tax obligation, which is computed on your gross Indian liability before any treaty relief. An American NRI who books a Rs 6,00,000 Indian share gain owes Indian advance tax on the Indian tax in full, on the Indian dates; the US foreign tax credit arrives months later on Form 1116 and offsets US tax, not Indian.

The sharper failure is on the interest. Even where a credit reduces your final Indian tax, the law allows foreign tax credit against tax, surcharge, and cess only, never against interest, fee, or penalty. So if you underpay advance tax on the theory that "it all washes out with my home credit anyway", the 234B and 234C interest still runs at 1% a month on the Indian shortfall, and no credit anywhere erases it. This is the cleanest example of an NRI paying interest a resident never would, purely from misreading how cross-border relief sequences. The direction of relief matters too: residents of the US, UK, and Canada pay the Indian rate and claim the credit at home, which is exactly the population this trap hits; a UAE resident, with no home-country tax to credit against, simply pays India and is done, so the trap does not arise. The mechanics of claiming the home-side relief, where it applies, are in foreign tax credit and Form 67.

Section 234C: the deferment charge, with its two tolerances

Section 234C charges interest when you pay less than the required cumulative percentage by an instalment date. The rate is 1% per month, simple interest, and the period is fixed per instalment, not metered day by day. For the ordinary case:

• By 15 June, pay at least 15%. A shortfall attracts 1% per month for 3 months, so 3% of the shortfall. The tolerance: pay at least 12% by 15 June and no 234C arises on the first instalment.
• By 15 September, at least 45%. Shortfall runs 1% per month for 3 months, again 3%. Tolerance: pay at least 36% and you are clear.
• By 15 December, at least 75%. Shortfall runs 3%.
• By 15 March, the full 100%. Shortfall runs 1% per month for 1 month, so 1% of the shortfall.

A missed first, second, or third instalment therefore costs 3% of that quarter's shortfall, and a missed fourth costs 1%. The interest is computed on each instalment's shortfall separately, then summed. It is a one-time charge per gate, not a running meter. The 12% and 36% tolerances on the first two instalments exist because estimating income that early is genuinely hard; treat them as a safety margin, never as the target.

Section 234B: the open-ended charge for ignoring the year

Section 234B is the bigger, uncapped charge, and it catches the NRI who skipped advance tax entirely and planned to settle everything at filing. It applies when the advance tax paid during the year is less than 90% of assessed tax, where assessed tax is your final tax minus TDS. Cross that 90% line short and 234B runs at 1% per month, simple interest, from 1 April of the assessment year until the date you actually pay the balance as self-assessment tax. The base is the shortfall: assessed tax minus advance tax already paid.

The difference from 234C is the whole danger. Section 234C is capped at a few months per instalment. Section 234B keeps accruing every month from 1 April until you clear the dues. An NRI who realises a large gain, pays nothing through the year, and only settles when filing in July is looking at four months of 234B stacked on top of the 234C already baked in for the missed instalments. The two run in parallel on overlapping shortfalls, and together they are how a "I'll just pay at filing" plan quietly costs 7% of the bill. And to close the loop on the previous section: a foreign tax credit reduces assessed tax for the 90% test, but cannot touch the 234B interest itself.

Section 234A: the late-filing charge, and the move that neutralises it

Section 234A is the separate charge for filing the return after the due date. For most NRIs filing ITR-2, that due date for AY 2026-27 is 31 July 2026. File after it with tax still unpaid and 234A runs at 1% per month, or part of a month, on the unpaid tax, from the day after the due date until you file.

The nuance worth real money: 234A bites only on tax unpaid as at the due date. If your full tax is already settled, through TDS, advance tax, and self-assessment tax, by 31 July 2026, then filing the return itself a few days late attracts no 234A, because there is no unpaid balance for the interest to run on. You may still owe the flat late-filing fee under Section 234F (Rs 5,000, or Rs 1,000 if total income is under Rs 5 lakh), which is separate and not avoided this way. But the 234A interest specifically needs an outstanding amount. So the cleanest defensive move, if you are going to file late for any reason, is to pay the tax before 31 July even if the return slips. That neutralises 234A, though it does nothing for 234B and 234C already accrued.

Two NRIs, one calendar: where it stays free and where it stings

Start with the clean case, because most NRI years look like it. Priya is a UK-resident NRI. For FY 2025-26 her India income is NRO fixed deposit interest of Rs 4,00,000, on which her bank deducts TDS at 30% plus 4% cess, so Rs 1,24,800, plus a long-term capital gain of Rs 6,00,000 on equity mutual funds redeemed in October 2025, with no TDS taken by the platform. Assume her NRO interest taxed at slab and the LTCG together produce a total India tax for the year, after surcharge and cess, of Rs 1,60,000. Subtract the Rs 1,24,800 of TDS and her net liability is Rs 35,200, well over the threshold, so advance tax applies on Rs 35,200: Rs 5,280 by 15 June, a cumulative Rs 15,840 by 15 September, Rs 26,400 by 15 December, and the full Rs 35,200 by 15 March.

The detail that saves Priya is timing. Her gain arose in October, after the June and September dates had passed, so she could not possibly have paid advance tax on a gain that did not yet exist. The 234C proviso, covered below, protects that portion provided she pays the tax on the gain in the December and March instalments. Her NRO interest was foreseeable from April, but the bank's TDS of Rs 1,24,800 already exceeds the tax on that interest, so there is no advance tax shortfall on that stream to worry about. The honest read for Priya: pay Rs 35,200 in full, with the cumulative 75% in by 15 December to cover the gain, and she walks away with zero interest.

Now the cautionary version, run to the last rupee. Arjun is a US-resident NRI who sold listed Indian shares in August 2025. With his NRO interest, his total India tax for FY 2025-26 is Rs 2,00,000, and his TDS for the year is Rs 50,000, all on NRO interest, because the on-market share sale carried none. He pays no advance tax during the year, telling himself the US foreign tax credit will sort it out, and finally pays the balance as self-assessment tax on 25 July 2026 before filing just inside the deadline.

His assessed tax is Rs 2,00,000 minus Rs 50,000, or Rs 1,50,000. Ninety percent of that is Rs 1,35,000; he paid zero advance tax, so he is far below the line and 234B applies. It runs at 1% per month from 1 April 2026 to 25 July 2026. April, May, June, and July is four months, because a part of a month counts as a full one. So 234B is Rs 1,50,000 x 1% x 4 = Rs 6,000. On top, 234C applies because he missed every instalment. His NRO interest tax was foreseeable from the start; his share gain arose in August, after the June gate, so the proviso shelters the gain's share of the first instalment but not the rest. Computed gate by gate on the cumulative shortfalls, a taxpayer who pays nothing all year typically lands around Rs 4,000 to Rs 5,000 of 234C on a Rs 1,50,000 base, given 3% on each of the first three instalments and 1% on the last.

The total damage is roughly Rs 10,000 to Rs 11,000 of interest across 234B and 234C, on a Rs 1,50,000 bill, purely for not paying in instalments. Here is the counterfactual that should change behaviour: the identical Rs 1,50,000 paid on the four dates would have cost Arjun nothing, and his US foreign tax credit would have been exactly the same either way, because the credit offsets US tax on the gain regardless of when he paid India. Deferring cost him about 7% of the bill and bought him nothing, an expensive way to hold money for a few extra months. Had he also filed late with tax outstanding past 31 July, Section 234A would have added a further 1% per month, plus the Section 234F fee.

The 234C proviso for late gains, and the four other edge cases

Capital gains and dividends that arrive late in the year get specific relief, and it is the lever every NRI selling shares should know. The first proviso to Section 234C recognises that you cannot estimate a gain or a dividend before it happens. If your shortfall in an instalment is on account of capital gains, dividend income, or winnings from lotteries and the like, no 234C is charged on that income provided you pay the full tax on it in the remaining instalments as they fall due, or, if the income arises after 15 March, by 31 March. So a gain realised in February need only be covered by the 15 March instalment, and a gain in late March by 31 March, to escape 234C entirely. Dividend income was folded into this relief from FY 2020-21 onward, which matters now that NRI dividends are taxed in your hands. Note the limit: the relief is from 234C only. It does not switch off Section 234B, so the tax on that late gain still has to clear the 90% line by year-end or 234B engages.

You expected TDS that never got deducted. If you netted off TDS on rent or interest that a deductor failed to operate, your advance tax was understated by your own optimism, and the interest sections apply on the resulting shortfall. Assume TDS only where you are confident it will actually be deducted.

Your net liability is at or below Rs 10,000. If, after TDS, net tax is below Rs 10,000, advance tax does not apply and neither does 234C; you simply pay the balance as self-assessment tax at filing. 234B also will not arise as long as advance tax plus TDS covers 90% of assessed tax, which for a sub-Rs-10,000 liability the TDS typically does.

The Section 87A rebate does not rescue you. The rebate that zeroes out tax for resident individuals below an income threshold is available to residents only. As an NRI you cannot use it to drop your liability under the advance tax line, so a small total India income does not mean no advance tax. Read the capital gains guide for the parallel NRI-only denials (no basic-exemption set-off, no indexation option) that make your gain tax heavier than a resident's in the first place.

You overpaid. If you paid more than the final bill, the excess returns as a refund with interest under Section 244A when you file. Given the 1%-a-month cost of a shortfall, a small overpayment is the cheap mistake; underpayment is the expensive one.

Paying from Dubai or London without an NRO account

You do not need to be in India, and you do not need to push money through an NRO account first. Advance tax is paid straight to the government through the e-Pay Tax facility at incometax.gov.in, the modern home of what used to be Challan 280. Go to e-Pay Tax under Quick Links, or log in to your portal account. Select assessment year AY 2026-27 for FY 2025-26 income, and choose minor head (100) Advance Tax for instalments through the year, or (300) Self-Assessment Tax if you are paying after year-end at filing. Pay by net banking, debit card, RTGS or NEFT, or the payment gateway that accepts credit cards and UPI; the payment gateway is the route most usable from abroad, since it does not require an Indian bank's net-banking login. The challan receipt with its CIN (Challan Identification Number) is generated immediately and stored in your payment history.

That CIN is your proof of payment. The credit flows into your Form 26AS and AIS over the following days, and when you file ITR-2 you reconcile advance tax paid against tax due by quoting the challan details; see Form 26AS and AIS for NRIs for how to read those statements. If you keep an Indian bank account with net banking, that is the simplest channel; if not, the payment gateway with an international card is the fallback, though check your issuer's foreign-transaction charges before a large payment.

A discipline that keeps you out of interest entirely: estimate the full-year tax in April, subtract only TDS you trust, and if the net clears Rs 10,000, put the four dates in your calendar then. Cover predictable income (NRO interest, rent, recurring dividends) from the first instalment, because it was foreseeable from day one. For a capital gain, pay its tax in the very next instalment after the sale and before year-end, which is exactly what the 234C proviso rewards while also clearing the 90% line for 234B. If you will file late, pay before 31 July anyway to neutralise 234A. And keep every challan, because reconciliation is far smoother when each CIN matches your 26AS.

The honest read

For most NRIs, advance tax is a non-event right up until the year you book a capital gain. Your NRO interest and dividends already carry TDS, that TDS usually covers the bill, net liability stays under Rs 10,000, and nothing is due. The year it changes is the year you sell shares or mutual funds, or pick up rent nobody deducted from, because that income arrives without reliable TDS and shoves your net liability over the line. Treat the day you book a large Indian gain as the day to plan its tax payment, and you will never meet 234B, 234C, or 234A in person.

So the recommendation, for the common case: run the one calculation in April, and if you are clear of the threshold, do nothing and enjoy it. The moment you realise a gain, pay its tax in the next instalment that falls due, and in any case before 31 March, which buys you the 234C proviso on the gain and clears the 90% line for 234B in a single move. The trap to design around, if you live in the US, UK, or Canada, is the belief that a foreign tax credit makes Indian timing irrelevant. It does not. The credit offsets your home tax on the same income and never reduces the Indian 1%-a-month interest, so pay India on its schedule and claim your credit at home separately. The exception is the genuinely large or messy year, a big property sale, a year with both a gain and uncertain TDS on rent, or a first year of RNOR-to-NR transition where your residency itself is in play; that is the year to put a chartered accountant on the file rather than a blog, this one included. For everyone else, the law is not asking for more money, only the same money on time. Pay it on time and the entire interest apparatus simply never engages.

Related guides

• ITR filing for NRIs, AY 2026-27
• TDS for NRIs and how to claim refunds
• Capital gains tax for NRIs on shares and mutual funds
• Tax on dividends from Indian companies for NRIs
• Tax on NRO account interest
• Tax on Indian rental income for NRIs
• NRI residency and the RNOR rules
• Foreign tax credit and Form 67
• Form 26AS and AIS for NRIs
• Reducing NRO TDS using the DTAA
• NRE, NRO, and FCNR accounts explained
• All taxation guides
• All banking guides
• All investment guides

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This guide is general information, not tax advice. Advance tax thresholds, instalment dates, and the interest rates under Sections 234A, 234B, and 234C are stated for AY 2026-27 as understood in June 2026, and the rules can change with each Budget. The interaction of TDS, foreign tax credit, DTAA relief, and advance tax depends on your specific income and country of residence. Verify current rules on incometax.gov.in and consult a qualified chartered accountant before acting on your own numbers.