Every ITR due date for AY 2025-26 — salaried, businesses, audit cases, revised and belated returns — plus penalties, interest under 234A/B/C and how to avoid a notice.
If you earned income in FY 2024-25 (1 April 2024 to 31 March 2025), the assessment year for filing your Income Tax Return is AY 2025-26. Missing the due date isn't just an inconvenience — it triggers interest under Section 234A, a flat late fee under Section 234F, loss of carry-forward benefits, and in audit cases, a percentage penalty that can run into lakhs. This is the only ITR last-date guide you need for the season, written for salaried employees, freelancers, founders and businesses.
| Taxpayer category | Original due date | Audit / TP report due date |
|---|---|---|
| Individual / HUF (no audit) — salaried, pensioner, freelancer in 44ADA, small business in 44AD | 31 July 2025 | — |
| Working partner of a non-audit firm | 31 July 2025 | — |
| Businesses / professionals requiring tax audit u/s 44AB | 31 October 2025 | 30 September 2025 (audit report) |
| Companies (Pvt Ltd, OPC, Public Ltd) | 31 October 2025 | 30 September 2025 (audit report) |
| Assessees with international / specified domestic transactions (Form 3CEB) | 30 November 2025 | 31 October 2025 (TP report) |
| Belated return (with late fee) | 31 December 2025 | — |
| Revised return (correcting an earlier return) | 31 December 2025 | — |
| Updated return (ITR-U) for AY 2025-26 | 31 March 2030 | — |
These are the statutory dates under Section 139(1), 139(4), 139(5) and 139(8A). The CBDT occasionally extends deadlines — always re-check the latest notification before the last week of July or October.
There are three separate financial consequences for late filing — they stack, so the real cost is usually higher than the headline late fee.
| Total income | Late fee |
|---|---|
| Up to ₹2.5 lakh (below basic exemption) | Nil |
| ₹2.5 lakh – ₹5 lakh | ₹1,000 |
| Above ₹5 lakh | ₹5,000 |
If self-assessment tax is pending on the due date, interest of 1% per month (simple) applies from the day after the due date till the date of filing. Part of a month counts as a full month — so filing a day late can already cost you a full month's interest.
If you owe more than ₹10,000 in tax for the year and didn't pay advance tax in the four prescribed instalments (15 June, 15 Sept, 15 Dec, 15 March), 234B and 234C add 1% per month each on the shortfall. These apply even if you file on time — paying tax at filing is not the same as paying advance tax.
Salaried employees often forget that interest income, capital gains and freelance earnings require advance tax. TDS on salary alone won't save you from 234B if your other income pushes you into a higher slab.
Riya has ₹95,000 self-assessment tax pending after TDS. She files on 22 August. Her cost: ₹5,000 (234F) + 1 month × 1% × ₹95,000 = ₹950 (234A) = ₹5,950 in penalties plus the ₹95,000 tax. Had she filed by 31 July with a partial payment, 234A would have been zero.
Karan presumes 50% profit (₹19 lakh) and tax of ~₹2.7 lakh after deductions. He paid no advance tax. Cost: ₹5,000 (234F) + 5 months × 1% = ₹13,500 (234A) + ~₹27,000 (234B) + ~₹15,000 (234C). Total leakage: ~₹60,500 over and above the tax itself.
Even a zero-revenue company that misses 31 October faces ROC penalties (LLP/Company side), MCA late fees, plus ₹5,000 under 234F. Directors' personal ITRs and DIR-3 KYC also slip — a single missed deadline cascades across the compliance calendar.
| Type | When to use | Last date for AY 2025-26 | Cost |
|---|---|---|---|
| Belated (139(4)) | You forgot to file by the original due date | 31 December 2025 | 234F + 234A interest |
| Revised (139(5)) | You filed, but discovered a mistake or missed income | 31 December 2025 | No 234F, but 234A on extra tax |
| Updated / ITR-U (139(8A)) | You missed both the original and belated windows | 31 March 2030 | Additional 25% / 50% / 60% / 70% of tax + interest, slab depends on year |
ITR-U cannot be used to claim or increase a refund, or to reduce tax liability. It's a one-way street: you can only pay more tax, not less.
| Instalment | Due date | Cumulative % of tax liability |
|---|---|---|
| 1st | 15 June 2025 | 15% |
| 2nd | 15 September 2025 | 45% |
| 3rd | 15 December 2025 | 75% |
| 4th | 15 March 2026 | 100% |
| Presumptive (44AD / 44ADA) | 15 March 2026 | 100% in a single instalment |
Set Google Calendar alerts 7 days before each advance tax date. Most 234B/C interest is paid by people who 'planned to file in July' — by then the meter has been running for 13 months.
Yes — the CBDT has extended the 31 July deadline in several past years (AY 2023-24, AY 2022-23, AY 2020-21). However, extensions are announced very late and only when systemic glitches occur. Never plan around a hypothetical extension.
Refund interest under Section 244A is paid at 0.5% per month, but the period of delay attributable to you (i.e. between the original due date and your filing date) is excluded. So filing late costs you both penalty interest and refund interest.
Filing is mandatory if your gross total income exceeds the basic exemption (₹3 lakh under new regime; ₹3 lakh for seniors under old). Residents above 75 with only pension + interest from the same bank can use Section 194P and skip ITR filing — the bank deducts tax instead.
Only via ITR-U, with an additional 25%–70% of tax depending on which year you file in. Regular and belated windows both close on 31 December 2025.
No. Section 234F applies only if filing is mandatory (income above the basic exemption, or foreign assets / specified spends like ₹2 lakh foreign travel or ₹1 lakh electricity bill). If you're filing voluntarily for a refund, no late fee.
31 July 2025 is the date that matters for most individuals; 31 October 2025 for audit cases and companies. Every day past these costs interest, and every month past 31 December locks you out of the regular return entirely. File early, file accurately, and use the time saved to actually plan next year's tax — not firefight last year's.
Senior contributor at Taxpex Consultancy. Reviewed by a practising Chartered Accountant. Published on 2 April 2026 · Updated on 2 April 2026.
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