The ITR deadline split in two this year — most people are still assuming one date

Every mid-July the office fields the same call: "Is our return due on the 31st?" This year the honest answer is it depends — and for a growing number of our clients, the answer has changed from what they filed last year. The Finance Act, 2026 quietly split what used to be one shared non-audit deadline into two, and the split has not caught up with most people's mental calendar yet.

One date becomes three

Until this assessment year, section 139(1) of the Income-tax Act gave most non-audit taxpayers — salaried individuals and small businesses alike — a common 31 July due date, with audit cases pushed out to 31 October. The Finance Act, 2026 amended section 139(1) to carve out a third slab: taxpayers filing ITR-3 or ITR-4 who do not require a tax audit now get until 31 August 2026, a full month beyond the ITR-1/ITR-2 date. Transfer pricing cases requiring Form 3CEB retain their own later date of 30 November.

The change is permanent, not a one-year concession the government granted because of portal glitches or extended audit timelines — the kind of extension we have all grown used to reading about in late July. It is now written into the due-date structure itself, and it will repeat every assessment year unless amended again.

The deadline is no longer about how much you earn. It is about which ITR form you file and whether your accounts need an audit.

Who actually gets the extra month

The additional month is narrower than the headlines suggest. It applies specifically to ITR-3 filers (individuals and HUFs with business or professional income) and ITR-4 filers (presumptive-scheme taxpayers under sections 44AD, 44ADA or 44AE) whose accounts do not cross the tax audit threshold. In practice, that covers most proprietors, self-employed professionals, and partners drawing remuneration and interest from a non-audit firm.

It does not extend to ITR-1 or ITR-2 filers — salaried individuals, pensioners, and those with only capital gains, one house property, or other-source income stay on 31 July, exactly as before. And it does not extend to anyone whose accounts do require a tax audit under section 44AB, regardless of which ITR form they file: that group remains on 31 October, tied to the audit report timeline. A trap worth flagging here: a taxpayer with a small trading or freelance side income alongside a salary must file ITR-3, not ITR-1 — which moves their form, and therefore their due date, without them necessarily realising it.

Why the confusion is the expensive part

We have already seen both failure modes in the first two weeks of July. Salaried clients hearing about "the new August date" and assuming it applies to them, then filing carelessly close to 31 July because they think they have more room than they do. And business clients with audit requirements assuming the August date applies to everyone with business income, when their accounts actually keep them on the October timeline tied to their audit report.

Neither error costs anything to make on the phone. Both cost real money if acted on: a late-filed ITR-1 or ITR-2 attracts a fee under section 234F and interest under section 234A the moment 31 July passes, whichever form you eventually intended to file. The fix is simple but has to happen before you file, not after — confirm which ITR form your income actually requires, and read the due date off that, not off a headline.

The other change: more room to fix mistakes

A second, quieter change from the Finance Act, 2026 extends the window for filing a revised return under section 139(5). Previously a revised return had to be filed by 31 December of the assessment year; that window now runs to the end of the assessment year itself — 31 March 2027 for returns relating to AY 2026-27. This gives more breathing room to correct a missed deduction, an unreported bank interest entry, or an AIS mismatch discovered after filing.

Do not read this as licence to be careless with the original filing. A longer revision window changes nothing about the due date itself: file late past your applicable date — 31 July, 31 August or 31 October — and section 234F fees and section 234A interest still apply, exactly as before. The extended window helps you fix an honest error later; it does not soften the cost of filing late in the first place.

What to check this week

If you are salaried with only capital gains or other-source income alongside your salary, nothing has changed — treat 31 July as your date and do not wait on the strength of news you may have half-heard about an extension. If you run a proprietorship, practice, or draw partner's remuneration from a non-audit firm, confirm with your accountant that your turnover genuinely stays under the audit threshold before you rely on the 31 August date — being wrong about audit applicability is a costlier mistake than filing early. And if a tax audit does apply to your accounts, use the extra weeks before 31 October to close your books and get the audit report finalised early; that report, not the return itself, is usually what determines whether the October date is comfortable or a scramble.

Sources

This article is general information, not professional advice. Rules change; verify current provisions or contact the office for advice on your situation.