Can I file ITR after the deadline?

1Option 1: the belated return (Section 139(4))

If you missed 31 July, your first option is a belated return under Section 139(4). You can file it up to 31 December of the assessment year (or before the assessment is completed, whichever is earlier).

You file it exactly like a normal return, but you pay a late fee and interest, and you give up some benefits (explained below). The big advantage: you stay compliant and can still claim most refunds.

2Option 2: the updated return (ITR-U, Section 139(8A))

Miss even the 31 December belated window? You can still file an updated return (ITR-U), available for up to four years from the end of the assessment year. But it's meant for declaring additional income and paying tax — not for refunds.

• It costs additional tax on top of the normal tax and interest
• 25% extra if filed within 12 months of the assessment year's end
• 50% if within 24 months
• 60% within 36 months and 70% within 48 months
• You cannot use ITR-U to claim a refund, reduce your tax, or report a loss

3What you lose by filing late

Filing after the due date has real costs beyond the late fee:

• A Section 234F late fee: ₹5,000 (₹1,000 if total income is up to ₹5 lakh)
• Section 234A interest at 1% per month on any unpaid tax, from the due date
• Loss of the right to carry forward most losses (business and capital losses) to future years
• Delayed refunds and interest on them

4Which option fits you

A quick way to decide:

• Before 31 December, and you owe tax or want a refund → file a belated return under 139(4).
• After 31 December but you have income you didn't declare → file ITR-U, accepting the extra tax.
• You're owed a refund and missed 31 December → unfortunately ITR-U can't help; the refund is generally lost.

5The exact dates for AY 2026-27

The general rules above map onto specific dates this year, and knowing which one applies to you decides what your options actually are.

The individual due date has already passed, but the belated window is open for several more months. That gap is where most people still have a cheap route available and do not realise it.

• 31 July 2026 — the due date for individuals filing ITR-1 or ITR-2 whose accounts do not require audit. It was not extended this year, unlike AY 2025-26 when late release of the filing utilities forced a extension to mid-September.
• 31 August 2026 — ITR-3 and ITR-4 filers with business or professional income not requiring a tax audit. If this is you, you are not late yet.
• 31 October 2026 — taxpayers whose accounts require a tax audit.
• 31 December 2026 — the final date for a belated return under Section 139(4) or a revised return under Section 139(5) for AY 2026-27.
• Beyond that — only an updated return under Section 139(8A), which the Finance Act 2025 extended to a 48-month window effective from AY 2026-27.

6Filing the belated return, step by step

The mechanics are identical to an ordinary return, with two differences: you select Section 139(4) as the filing section, and you must pay the late fee and any interest before the return will validate. Doing the reconciliation first is what prevents a belated return from itself needing revision later.

Start by downloading your Annual Information Statement and Form 26AS from the income-tax portal and comparing them against your own records. The AIS aggregates interest from banks, dividends, securities transactions, rent received and high-value purchases reported by third parties. Income that appears there but not in your return is the single most common trigger for an intimation under Section 143(1), and correcting it now costs nothing while correcting it after a notice costs time and stress.

Next compute the tax. If tax remains payable, pay it as self-assessment tax under Challan 280 before filing, because Section 234A interest accrues on the unpaid amount for every month or part month until the return is filed. Paying first and filing immediately afterwards stops that clock. Enter the challan details in the return so the credit is matched.

Then file, choosing the correct form. A belated return can be filed on any of the ITR forms; lateness does not change which form applies to your income. Finally, e-verify. This is the step people skip, and it matters more than any other: an unverified return is legally treated as never filed, so the late fee has been paid for nothing and the interest continues to run. Aadhaar OTP is the fastest route, and you have 30 days from filing.

• Download and reconcile the AIS and Form 26AS against your own records before filing.
• Pay any outstanding tax as self-assessment tax first, so 234A interest stops accruing.
• Select Section 139(4) as the filing section and use the ITR form appropriate to your income.
• E-verify within 30 days — an unverified return counts as not filed at all.
• Keep the challan and acknowledgement together, since refund and notice queries both reference them.