The one-line answer, then the nuance
Here is the rule in a sentence: an NRI must file an Indian income-tax return if total income from Indian sources exceeds the basic exemption limit for the year — full stop. Only India-sourced income counts. Your salary in Dubai, your rental income in London, your US brokerage gains — none of that is taxable in India for an NRI, and none of it drags you into the Indian filing net. What matters is money that arises or accrues in India: rent from a flat in Pune, interest on an NRO deposit, capital gains on Indian shares or property, dividends from Indian companies, or business income earned here. Add those up. If the total sits above the exemption limit, filing is mandatory. If it doesn't, you're into the 'when it's optional' territory below — with some important exceptions.
When filing an ITR is mandatory for an NRI
Filing stops being a choice the moment any one of these is true. You only need to trip a single trigger, not all of them:
- Your total India income exceeds the basic exemption limit — Rs 2.5 lakh (old regime) or Rs 4 lakh (new regime, FY 2025-26). This is measured on gross total income, before deductions under Chapter VI-A.
- You have taxable capital gains in India — from selling property, shares, or mutual funds — that push your India income over the threshold. Gains charged at special rates still count toward whether you must file.
- TDS or TCS deducted against your PAN during the year is Rs 25,000 or more — a high-value-transaction trigger that makes filing compulsory even when your net income looks modest.
- You deposited Rs 1 crore or more in one or more current accounts, or spent over Rs 2 lakh on foreign travel, during the year.
- You earned income from a business or profession carried on in India and your total income crosses the exemption limit, or your Indian accounts require a tax audit.
A common misread is: 'my only India income was a one-off capital gain, so I'm below the limit.' Capital gains are part of total income for the filing test, and the Section 87A rebate that makes income up to Rs 12 lakh tax-free for residents under the new regime does not apply to NRIs — nor to special-rate incomes like most capital gains. If a property or share sale takes your India income over the exemption limit, filing is mandatory and tax is due.
When you don't have to file — but really should
Plenty of NRIs sit just under the exemption limit and assume they're done. Legally they might be — but filing is often the smarter move, because a return is the only door to several things you otherwise forfeit:
- To claim a TDS refund. Banks deduct TDS on NRO interest at 30% (plus surcharge and cess), and buyers deduct hefty TDS on property sales. If your actual liability is lower — or nil — the excess only comes back when you file a return. No return, no refund.
- To carry forward a capital loss. Sold something at a loss this year? You can set it off against future gains for up to eight years — but only if you report the loss in a return filed by the due date. Miss the deadline and the loss is gone.
- To claim relief under a DTAA. If the same income is taxed in India and in your country of residence, the treaty lets you avoid double taxation — but you generally have to file an Indian return to claim the credit or exemption, and to file Form 10F where required.
- To build a clean compliance record. A consistent filing history smooths visa applications, home-loan approvals, and future high-value transactions, and makes you far less likely to receive a mismatch notice from the department.
- To reconcile your AIS and Form 26AS. The department already sees your Indian interest, dividends and large transactions through the Annual Information Statement. Filing is how you explain them; silence is what invites questions.
For most NRIs who file voluntarily, the reason is a TDS refund. 30% withheld on NRO interest, or a slab of TDS on a property sale, can run into lakhs — and the money simply stays with the tax department until you file the return that claims it back. If tax has been deducted and your real liability is lower, the return pays for itself.
When filing is genuinely optional
There is a narrow, long-standing relief that lets some NRIs skip filing entirely. If your total India income for the year consists only of investment income (such as interest or dividends) and/or long-term capital gains, and tax has already been deducted at source from that income, you are specifically not required to file a return — a relief carried over from Section 115G of the earlier Act. In plain terms: if the only money you made in India was passive, already had the correct TDS taken off, and you have nothing to reclaim or carry forward, you can leave it there.
The catch is how rarely all those boxes tick at once. The moment you have a refund to claim, a loss to carry forward, business or rental income, or TDS that doesn't match your real liability, the relief falls away and the calculus tips straight back toward filing. Treat 'genuinely optional' as the exception, not the default.
Must file vs need not file: a quick checklist
- India income above the basic exemption limit
- Capital gains that take you over the threshold
- TDS/TCS of Rs 25,000 or more in the year
- A TDS refund you want back
- A loss you want to carry forward
- You're claiming DTAA treaty relief
- India income entirely below the exemption limit
- Only investment income or LTCG, with correct TDS already deducted
- Nothing to refund, carry forward, or reconcile
- No high-value-transaction trigger tripped
Which ITR form NRIs use
Once you've decided you're filing, the next question is which form. NRIs are locked out of the two simplest ones, so this is shorter than it looks:
| Form | Who it's for | Can an NRI use it? |
|---|---|---|
| ITR-1 (Sahaj) | Residents with simple salary / one-house income | No — barred for NRIs |
| ITR-2 | Salary, house property, capital gains, other sources — no business income | Yes — the usual NRI form |
| ITR-3 | Anyone with income from a business or profession in India | Yes — when you have business or professional income |
| ITR-4 (Sugam) | Residents under presumptive taxation | No — barred for NRIs |
For the overwhelming majority of NRIs — rent, interest, dividends, and the odd property or share sale — ITR-2 is the form. You only step up to ITR-3 if you actively run a business or profession in India. The mechanics of actually filling and e-verifying the return are a separate topic; this guide is about establishing that you need to file, and on which form.
The due dates that matter
Getting the obligation right only helps if you also hit the calendar. For FY 2025-26 (assessment year 2026-27), the key dates for a typical NRI without an audit requirement are:
| Deadline | Date for FY 2025-26 | What it's for |
|---|---|---|
| Original return | 31 July 2026 | On-time filing, non-audit cases (most NRIs) |
| Audit-case return | 31 October 2026 | If your Indian business accounts require audit |
| Belated / revised return | 31 December 2026 | Late filing with a fee, or correcting a filed return |
| Updated return (ITR-U) | Within the extended statutory window | A last-resort catch-up filing, with additional tax |
The department has extended the 31 July deadline in some past years, and may again — but never plan around an extension that hasn't been announced. File against the statutory date. Miss it and you drop from an on-time return to a belated one, which costs a late fee and forfeits your right to carry forward most losses.
What it costs you to skip filing
Not filing when you were required to isn't a quiet non-event. The consequences stack up:
| Consequence | What it means |
|---|---|
| Late-filing fee | Up to Rs 5,000 under the late-fee provision — reduced to Rs 1,000 if your total income is below Rs 5 lakh |
| Interest on unpaid tax | 1% per month on the tax due, running until you pay — it compounds the longer you wait |
| Lost refund | You cannot claim back excess TDS without a filed return; the money stays with the department |
| Forfeited losses | Capital and other losses can't be carried forward if the return is late or never filed |
| Notices and scrutiny | The department cross-checks your AIS and Form 26AS; unexplained India income invites a notice, and non-filing can escalate to a best-judgement assessment or, in serious cases, prosecution |
For most NRIs the sharpest cost isn't the penalty — it's the refund that never comes back. TDS deducted at 30% on NRO interest, or on a property sale, sits idle until a return claims it, and every year you skip is a year that money isn't working for you.
- File if your India income crosses the basic exemption limit — Rs 2.5 lakh (old regime) or Rs 4 lakh (new regime, FY 2025-26). Only India-sourced income counts.
- Filing is mandatory on certain triggers even below the limit — TDS/TCS of Rs 25,000 or more, large current-account deposits, or big foreign-travel spend.
- File voluntarily to claim a TDS refund, carry forward a loss, or claim DTAA relief — each of these needs a return.
- Filing is genuinely optional only if your India income is purely investment income or LTCG, with correct TDS already deducted and nothing to reclaim.
- Most NRIs file ITR-2; you only need ITR-3 if you have Indian business or professional income.
- The FY 2025-26 due date is 31 July 2026 for non-audit cases — miss it and you lose loss carry-forward and pay a late fee.
Frequently asked questions
Do NRIs have to file an ITR in India every year?
Only in years when you have a filing obligation — most commonly when your India income crosses the basic exemption limit, or when a trigger such as TDS of Rs 25,000 or more applies. In a year with no India income and nothing to reclaim, you may not need to file at all.
I only had NRO interest and TDS was already deducted — do I still need to file?
Not strictly, if that investment income was your only India income and the correct tax was deducted at source. But if the 30% TDS is more than your actual liability, filing is the only way to claim the refund — which is usually why NRIs in this position file anyway.
Is my foreign income taxable when I file an Indian ITR as an NRI?
No. As an NRI, only income earned or accrued in India is taxable in India. Your overseas salary, foreign rent and foreign investment gains stay outside the Indian return — you report and pay tax on India-sourced income only.
How is this different from just being told how to file?
Whether you must file and how to file are two different questions. This guide settles the first — the obligation, the triggers, the form and the deadline. The mechanics of registering, filling the form and e-verifying are a separate step you take once you've confirmed you need to.
Which ITR form should an NRI use?
ITR-2 for almost everyone — salary, rent, interest, dividends and capital gains. ITR-3 if you have income from a business or profession in India. NRIs cannot use ITR-1 (Sahaj) or ITR-4 (Sugam).
What happens if an NRI who was required to file doesn't?
You face a late-filing fee of up to Rs 5,000, 1% monthly interest on any unpaid tax, loss of the right to carry forward losses, and a forfeited refund. The department also cross-checks your AIS and Form 26AS, so unexplained India income can invite a notice.
Can an NRI still file after the 31 July deadline?
Yes — as a belated return up to 31 December 2026 for FY 2025-26, with a late fee, or later still as an updated return (ITR-U) with additional tax. But a belated return loses most loss carry-forward benefits, so on-time filing is worth protecting.
This article is for general information only and reflects rules current as of 2026. It is not legal, tax, or financial advice — rules, rates and procedures can change, so please confirm the current position with a qualified professional before acting.