Last reviewed: 25 September 2026. The 31 July deadline for ITR-1 and ITR-2 has come and gone, and no extension was notified. Under the Finance Act, 2026 staggered calendar, ITR-3 and ITR-4 filers not liable to tax audit had until 31 August 2026, and that window has closed too. Anyone who missed either date can still file a belated return up to 31 December 2026, at a cost that grows with every month of delay. The next live dates are for audit cases: the tax audit report by 30 September 2026 and the return by 31 October 2026. Here is where each category stands today, what a missed deadline actually costs, and how to limit the damage.
Which due date applies to you
The deciding factor under the staggered calendar is whether your accounts are liable to audit under Section 44AB — not the form number you are used to. This is where most misclassification happens: a salaried person with F&O trades files ITR-3, and a consultant on presumptive tax files ITR-4, and both belonged to the 31 August slab, which has now passed, not the 31 July one.
| Taxpayer category | Form | Due date (AY 2026-27) |
|---|---|---|
| Salary/pension, one house property, other sources (income up to Rs 50 lakh) | ITR-1 | 31 July 2026 — passed; belated window open |
| Salary, capital gains, multiple properties, foreign assets — no business income | ITR-2 | 31 July 2026 — passed; belated window open |
| Business or profession (incl. F&O trading), not liable to 44AB audit | ITR-3 | 31 August 2026 — passed; belated window open |
| Presumptive taxation u/s 44AD / 44ADA / 44AE | ITR-4 | 31 August 2026 — passed; belated window open |
| Accounts liable to tax audit u/s 44AB | ITR-3 / ITR-5 / ITR-6 | 31 October 2026 (audit report by 30 September 2026) |
| Working partner of a firm whose accounts require audit | ITR-3 | 31 October 2026 |
| Transfer pricing cases (Section 92E report) | — | 30 November 2026 |
31 July was not extended — the final position
Speculation about relief ran right up to the last evening, but no extension was notified and the ITR-1/ITR-2 window closed on schedule. The portal held up this year, unlike 2025, when late utility releases pushed the date to mid-September. With business filers already holding a statutory cushion to 31 August, the pressure that used to force July extensions has largely gone. Both the 31 July and 31 August dates have now passed. If your date was either of them and you missed it, the belated route below is open, and cheaper the sooner you use it.
What missing the due date actually costs
| Consequence | Provision | Impact |
|---|---|---|
| Late filing fee | Section 234F | Rs 5,000 (Rs 1,000 where total income ≤ Rs 5 lakh) |
| Interest on unpaid tax | Section 234A | 1% per month or part month, from due date to filing date |
| Loss carry-forward | Sections 139(3) / 80 | Business and capital losses lapse; house-property loss and unabsorbed depreciation survive |
| Tax regime locked | Section 115BAC | Old-regime option available only in a return filed by the 139(1) due date; belated returns are processed under the new regime |
| Profit-linked deductions | Section 80AC | Deductions under Part C of Chapter VI-A (80-IA to 80-IE, 80JJAA, 80P etc.) require a return filed by the due date |
| Refund interest trimmed | Section 244A | On a late return, interest on your refund runs only from the filing date, not from 1 April |
AY 2026-27 is FY 2025-26 income, so the 1961 Act sections above still govern it. One point to verify on your facts: under section 536(2)(g) of the Income-tax Act, 2025, interest for the period from 1 April 2026 may be charged under the new Act (section 423 for old 234A, section 437 for old 244A). The rate and computation are the same, so the cost below does not change.
Worked example: what a belated return costs — and why September beats December
Take a salaried taxpayer with total income of Rs 14 lakh, ITR-2, self-assessment tax of Rs 48,000 still payable after TDS. Her due date of 31 July 2026 has passed. Compare two belated filing dates:
- Files 30 September 2026: Section 234F fee Rs 5,000 (fixed once the due date is missed) + 234A interest for August and September = 2 months × 1% × Rs 48,000 = Rs 960. Direct cost: Rs 5,960.
- Files 20 December 2026: the same Rs 5,000 fee, but 234A now runs August to December = 5 months (part months count in full) × 1% × Rs 48,000 = Rs 2,400. Direct cost: Rs 7,400.
- Either way, the regime lock applies: if HRA, home-loan interest and 80C made the old regime cheaper by, say, Rs 22,000, a belated return forfeits that choice for the year — taking the December total to Rs 29,400.
The Rs 5,000 fee became unavoidable the moment 31 July passed — but every further month adds another 1% on the unpaid tax, and 234B/234C interest on any advance-tax shortfall accrues separately. By contrast, a pensioner with total income of Rs 4.6 lakh and no tax payable pays a capped fee of Rs 1,000 — and no 234F at all if filing was not mandatory for her in the first place.
Missed 31 July or 31 August? File belated now — checklist
- Pay self-assessment tax first, then file immediately — 234A runs to the filing date and each part month counts in full, so crossing into the next month adds another full 1%.
- Reconcile Form 16, Form 26AS and AIS before you start — mismatches are the top cause of CPC adjustments and notices, and corrections later mean a revised return.
- Recompute tax under the new regime — a belated return (no business income) cannot opt for the old regime, so do not copy last year’s old-regime working.
- If a refund is due, file without delay: with no tax payable there is no 234A, and 244A refund interest starts only from your filing date.
- E-verify within 30 days — an unverified return is treated as never filed, which wastes the fee you just paid.
NRIs: an NRI with Indian capital gains, rent or interest usually files ITR-2, so the same 31 July date and the same belated window to 31 December 2026 apply. A belated return is often the only way to recover excess TDS deducted on a property sale or NRO interest. Our CA services for NRIs and NRI tax hub cover the NRI-specific points.
Audit cases: 30 September report, 31 October return
- If your accounts are liable to audit u/s 44AB, the tax audit report (Form 3CA/3CB with 3CD) is due by 30 September 2026, and the return follows by 31 October 2026. No extension had been notified as on the date of this review; check the portal before relying on one.
- Close the books first: broker P&L and F&O turnover statements, GST-vs-books turnover reconciliation and 26AS/AIS/TIS matching all take longer than expected — our ITR-3 guide for traders and professionals walks through the sequence.
- Compare regimes before filing — see our old vs new regime break-even guide; if the old regime wins, file Form 10-IEA before the return, since business-income filers opt via 10-IEA by the due date.
- Clear any advance-tax shortfall with self-assessment tax early — 234B interest runs monthly until payment.
- Do not bank on the last week: portal load, OTP and challan delays peak in the final days before every due date.
The recovery path, in full
A belated return under Section 139(4) can be filed up to 31 December 2026 with the fee and interest above. A return already filed can be revised under Section 139(5) up to 31 March 2027 — a window the Finance Act, 2026 widened from the earlier 31 December limit. Beyond those dates, the only route is the updated return (ITR-U) — open for 48 months but with additional tax of 25–70% and no refunds or losses; our ITR-U guide covers it in detail. And remember: a refund can only be claimed through a filed return — every season we see taxpayers forfeit genuine TDS refunds simply by not filing.
Common mistakes we see every filing season
- Waiting for an extension that never came — 31 July closed on schedule this year; the staggered calendar has removed most of the pressure that used to force last-minute relief.
- Filing the wrong form on habit — F&O traders using ITR-2, or presumptive professionals using ITR-1, invite defective-return notices u/s 139(9).
- Paying the tax but not filing — payment alone does not stop 234F or the loss of carry-forwards.
- Filing but not e-verifying within 30 days — the return lapses quietly.
- Ignoring AIS entries for dividends, SB interest and mutual-fund switches — small omissions that surface as e-campaign notices months later.
Frequently asked questions
Was the ITR last date extended for AY 2026-27?
No. The 31 July 2026 due date for ITR-1 and ITR-2 passed without any CBDT extension. Under the Finance Act, 2026 staggered calendar, ITR-3 and ITR-4 filers not liable to tax audit had until 31 August 2026, and that date has also passed. Audit cases have until 30 September 2026 for the tax audit report and 31 October 2026 for the return.
I missed the 31 July 2026 ITR deadline. Can I still file?
Yes. A belated return under Section 139(4) can be filed until 31 December 2026. It attracts the Section 234F fee and 1% per month interest under Section 234A on unpaid tax, is processed under the new regime, and cannot carry forward business or capital losses, though house-property loss and unabsorbed depreciation survive. Filing sooner costs less, because each month or part month of delay adds another 1%.
What is the late fee if I miss my ITR due date for AY 2026-27?
Section 234F levies a fee of Rs 5,000, reduced to Rs 1,000 where total income does not exceed Rs 5 lakh. In addition, interest under Section 234A runs at 1% per month or part thereof on unpaid tax from the due date to the filing date. No 234F fee applies if you were not mandatorily required to file under Section 139(1).
Can I choose the old tax regime in a belated return?
Generally no. For taxpayers without business income, the Income Tax Department FAQs state the old-regime option is exercised in the return filed on or before the Section 139(1) due date, so a belated return is processed under the default new regime. Taxpayers with business or professional income must file Form 10-IEA by the due date to opt for the old regime.
I trade F&O or run a small business. Is my due date 31 August 2026?
It was. For accounts not liable to audit under Section 44AB, the ITR-3/ITR-4 due date for AY 2026-27 was 31 August 2026 (a statutory date under the Finance Act, 2026, not an extension), and it has now passed. A belated return stays open till 31 December 2026. If a 44AB audit applies, the audit report is due by 30 September 2026 and the return by 31 October 2026; a working partner of a firm whose accounts require audit also gets 31 October 2026. The deciding factor is audit liability, not the form number.
Do NRIs get the same belated window?
Yes. An NRI with Indian capital gains, rent or interest usually files ITR-2, and the 31 July 2026 due date applied. A missed return can be filed belated until 31 December 2026 on the same terms, and it is often the only way to recover excess TDS deducted on property sales or NRO interest.
What if I miss even the 31 December 2026 belated deadline?
The updated return (ITR-U) route stays open for up to 48 months from the end of the assessment year, i.e. until 31 March 2031 for AY 2026-27, but it requires additional tax of 25% to 70% depending on when you file, and it cannot be used to claim or increase a refund or to report a loss.
Our office assists with belated returns and refund claims, tax audit reports and audit-case returns, regime comparison, AIS reconciliation and post-filing notices. If you missed 31 July or 31 August, every month of delay has a price; if your accounts are audited, the report is due by 30 September and the return by 31 October.
Income Tax Filing & Advisory Income Tax Notice Management Talk to usThis article is educational material on the law applicable to AY 2026-27 (FY 2025-26), reflecting the Income-tax Act, 1961 as amended by the Finance Act, 2026, and CBDT releases as of 25 September 2026. Due dates can change by notification; please verify the current position or take professional advice for your specific facts before acting. See also our ITR Filing Hub for AY 2026-27.