The ITR Deadline Just Split Into Four Dates —Which One Is Actually Yours?

For as long as most taxpayers in Lucknow can remember, 31 July was simply "the" income tax return deadline — the one date everyone without a tax audit had to remember. That is no longer true. The Finance Act, 2026 has rewritten Explanation 2 to section 139(1) of the Income-tax Act, 1961, and for returns of Assessment Year 2026-27 (income earned in FY 2025-26), the single deadline has become four separate deadlines depending on who you are and what kind of income you have.

This matters because the change is easy to miss. Many salaried taxpayers will still file by 31 July, as always. But a large number of small business owners, freelancers and professionals filing ITR-3 or ITR-4 now have an extra month — while assuming otherwise, one way or the other, can lead either to unnecessary last-minute stress or, worse, to filing after your actual due date without realising it.

What the Finance Act, 2026 actually changed

Parliament substituted Explanation 2 to section 139(1) with effect from 1 March 2026, applicable to Assessment Year 2026-27 (Previous Year 2025-26) — the return most Uttar Pradesh taxpayers and businesses are preparing to file this year. In place of the old two-and-a-half date structure, the law now sets out four categories in a table, each with its own due date.

Why the middle category is the one to watch

The genuinely new relief is the 31 August date for non-audit business and professional income. Previously, only audit cases got extra time; everyone else — a shopkeeper on presumptive taxation, a freelance consultant, a small trader — had to file by 31 July along with salaried employees, even though their books typically take longer to finalise. That has now changed, and it is a real, useful concession if you fall in this category.

But the concession only helps you if you correctly identify that you are in it. A person filing ITR-3 with genuine, unaudited business income falls in the 31 August category; a salaried employee with no business income at all remains squarely in the 31 July bucket regardless of the general "business owners get more time" headline. The safest approach is to check your own facts — the nature of your income, your ITR form, and whether your accounts are audit-required — against the table above, rather than assuming which bucket you fall into.

An extra month is only useful to a taxpayer who knows it exists. Assuming you have until 31 August when your actual due date is 31 July is the more expensive mistake of the two.

A second, quieter change: more room to revise your return

The same Finance Act also substituted section 139(5), which governs revised returns. Previously, a revised return had to be filed within nine months from the end of the relevant financial year. Under the new provision, you may now furnish a revised return at any time before the end of the relevant assessment year — for AY 2026-27, that runs through 31 March 2027 — or before your assessment is completed, whichever comes first.

This is a genuine improvement for anyone who files close to the belated-return deadline and then discovers an error, since under the old nine-month rule such a person effectively had no time left to revise. The one caveat: a newly inserted section 234-I imposes a modest fee — ₹1,000 if your total income does not exceed ₹5 lakh, ₹5,000 otherwise — if the revised return is filed later in this extended window rather than promptly. Filing your revision as soon as you spot the error, rather than waiting, remains the more sensible course.

One thing this change does not do

It is worth being precise about which law governs which year, because the two are easy to conflate. The new Income-tax Act, 2025 also rationalises these due dates — in its own section 263 — but those provisions apply from Tax Year 2026-27 onward (income earned from April 2026), commencing 1 April 2026. The return you are filing right now, for income earned in FY 2025-26, is an Assessment Year 2026-27 return and remains governed by the amended section 139(1) of the 1961 Act described above. The two regimes happen to arrive at broadly similar due-date structures, but for this year's filing, it is the 1961 Act's table that applies.

How to work out your own due date

Interest under section 234A on any unpaid tax continues to run from the original due date applicable to your category if tax remains outstanding, so identifying your correct date is not just a compliance formality — it affects the interest calculation as well.