If you miss your ITR deadline for FY 2025-26 — 31 July for salaried filers, 31 August for non-audit business filers — you can still file a belated return under Section 139(4) up to 31 December 2026, with a ₹5,000 late fee under Section 234F and loss of the right to carry forward capital losses. Miss 31 December too, and an Updated Return (ITR-U) remains available for 48 months, at a steeper additional-tax cost. This guide explains every consequence and the steps to file now.
The ITR Deadline for FY 2025-26
For salaried individuals, pensioners, and investors filing ITR-1 or ITR-2, the deadline was 31 July 2026. If that's you and you're reading this now, you've missed it — but you are not out of options. If instead you have business or professional income and file ITR-3 or ITR-4 without a tax audit, your deadline is 31 August 2026 — everything below still applies once you cross that date. Tax audit cases have until 31 October 2026.
What Happens After You Miss Your Deadline?
Missing the deadline triggers three consequences, each kicking in at a different stage:
1. Late Filing Fee — Section 234F
You must pay a late filing fee when you submit a belated return (after 31 July):
- ₹5,000 — if total income exceeds ₹5 lakh
- ₹1,000 — if total income is ₹5 lakh or below
- ₹0 — if total income is below the basic exemption limit (₹2.5 lakh under old regime; nil under new regime if income is below ₹12L after std deduction)
This is a flat fee, paid once when you file the belated return. It cannot be waived.
2. Interest Under Section 234A
If you owe tax (i.e., your TDS was not enough to cover your full tax liability), Section 234A charges interest on the unpaid tax:
- Rate: 1% per month (or part thereof)
- From: 1 August 2026 (the day after the due date)
- Until: The date you file the belated return and pay the tax
Example: If you owe ₹20,000 in tax and file in October 2026 (3 months late), Section 234A interest = ₹20,000 × 1% × 3 = ₹600.
If you already paid all tax via TDS and advance tax, Section 234A does not apply — there is no interest on a zero tax balance.
3. Loss of Carry-Forward for Capital Losses
This is the biggest hidden cost of missing the deadline that most people do not know about: if you made a capital loss during FY 2025-26, you can only carry it forward (for 8 years) if you file your return on time — i.e., by 31 July 2026.
If you miss the deadline and file a belated return, you lose the ability to carry forward that loss. This can cost you thousands of rupees in future tax that could have been offset.
Exception: Loss from house property can still be carried forward even in a belated return.
Can You Still File After Your Deadline? Yes — Belated Return
A belated return under Section 139(4) can be filed anytime between 1 August 2026 and 31 December 2026. Filing process is identical to a regular return — same portal, same ITR forms, same e-verification requirement. The only difference is that you pay the Section 234F late fee and any 234A interest when submitting.
After 31 December 2026, you cannot file a belated return for FY 2025-26 through the normal process. Your only option then is an Updated Return (ITR-U) — discussed below.
Can You Revise a Belated Return?
Yes. A belated return filed under Section 139(4) can be revised under Section 139(5) — just like a normal return. The revision window for both is 31 December 2026 for FY 2025-26 returns.
So if you file in October and realise you missed a deduction, you can revise until December.
What About After December 2026? The ITR-U Updated Return
If you miss both the original deadline and the 31 December belated return deadline, you are still not permanently shut out. The Updated Return (ITR-U) under Section 139(8A) can be filed voluntarily up to:
- 48 months from the end of the assessment year = 31 March 2031 for FY 2025-26
But ITR-U comes with a significant additional tax that rises the longer you wait:
- Within 12 months (by 31 March 2027): 25% additional tax on the tax + interest due
- 12–24 months (1 April 2027 – 31 March 2028): 50% additional tax
- 24–36 months (1 April 2028 – 31 March 2029): 60% additional tax
- 36–48 months (1 April 2029 – 31 March 2031): 70% additional tax
ITR-U can only be filed to pay additional tax — you cannot use it to claim a refund. It is useful if you missed reporting income and want to regularise before a notice arrives, and it remains available even after the 31 December belated-return deadline closes.
Penalties at a Glance
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- Filed by the original due date: No penalty, no interest on tax if all advance tax was paid
- Filed as a belated return, up to 31 December 2026: ₹5,000 (or ₹1,000 if income < ₹5L) Section 234F fee + 234A interest on unpaid tax
- Filed after 31 December 2026 via ITR-U: 25%–70% additional tax, rising every 12 months, up to 48 months
- Capital losses: Carry-forward is lost the moment you miss your original due date, even if you still file before 31 December
What If You Cannot File by 31 July but Can File by September?
File as soon as you have your documents — even if it is August or September. The Section 234F fee is the same whether you file on 1 August or 30 September. There is no marginal benefit to delaying further. Filing sooner also means your refund (if any) arrives sooner.
Filing Late vs. Not Filing At All
Some people assume that if they cannot file on time, they should not file at all. This is incorrect and risky:
- Not filing attracts scrutiny and potential prosecution under Section 276CC (willful failure to file)
- The IT Department can assess your income and impose a best-judgement assessment under Section 144
- Notices for non-filing are increasingly automated — the IT Department cross-references AIS data against filed returns
Always file — even late — rather than not filing at all.
Already Missed Your Deadline? File the Belated Return Now
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Frequently Asked Questions
What is the last date to file ITR for FY 2025-26?
31 July 2026 for salaried individuals and investors filing ITR-1 or ITR-2. 31 August 2026 for business/professional filers using ITR-3 or ITR-4 without a tax audit. Taxpayers requiring a tax audit have until 31 October 2026. Whichever applies to you, a belated return can still be filed up to 31 December 2026 under Section 139(4).
What is the penalty for filing ITR after 31 July 2026?
Under Section 234F: ₹5,000 if total income exceeds ₹5 lakh; ₹1,000 if total income is ₹5 lakh or less. This late fee is mandatory and cannot be waived. Additionally, interest under Section 234A accrues at 1% per month on unpaid tax from the due date until the date of filing.
Can I carry forward capital losses if I file a belated return?
No. Capital losses (STCL and LTCL) can only be carried forward to future years if the ITR is filed on or before the due date (31 July 2026 for most individuals). A belated return filed after 31 July 2026 forfeits the right to carry forward any unabsorbed capital losses — one of the most significant penalties of late filing for equity investors.
What is a revised return and when can I file one?
A revised return under Section 139(5) can be filed to correct any error in the original return. The deadline for filing a revised return for FY 2025-26 is 31 December 2026. There is no limit on the number of revisions, but the last revised return supersedes all prior ones. A revised return can only be filed if the original return was filed before the due date.
Can I still file ITR after 31 December 2026?
Not as a belated return — that route closes on 31 December 2026. Your voluntary option after that is an Updated Return (ITR-U) under Section 139(8A), available for 48 months from the end of the assessment year (31 March 2031 for FY 2025-26), with additional tax of 25%–70% depending on when you file. If you don't file at all, the Department can issue a notice under Section 142(1) or proceed with a best-judgment assessment under Section 144.
Does a belated return affect the Section 87A tax rebate?
No — the Section 87A rebate eligibility depends on income and the tax regime chosen, not on filing timing. However, any tax payable after the due date attracts Section 234A interest, which increases the effective tax burden for late filers.