If you missed the 31 July 2026 income tax return due date for FY 2025-26 (AY 2026-27), you have not lost the ability to file — you have entered the belated return window instead. This guide explains, in plain language, what a belated return costs you, how it differs from a revised return, and what to do if you miss even that deadline.
Quick Summary (AY 2026-27)
- Belated return (Sec 139(4)): file by 31 December 2026
- Late fee (Sec 234F): ₹5,000 (₹1,000 if income ≤ ₹5 lakh; nil if you were not required to file at all)
- Interest (Sec 234A): 1% per month on unpaid tax, from the original due date until you file
- Revised return (Sec 139(5)): file by 31 March 2027 (extended from the earlier 31 December cut-off by a recent Budget 2026 amendment)
- Updated return / ITR-U (Sec 139(8A)): available up to 31 March 2031 (48 months), with additional tax under Section 140B
Note: for FY 2025-26 (AY 2026-27), the Income Tax Department has clarified that the older Income-tax Act, 1961 continues to apply — not the new Income-tax Act, 2025 — even for a belated or revised return filed after 1 April 2026. So the section numbers above (139(4), 139(5), 234F, 234A) are the correct, current references for this assessment year.
Original Due Dates for FY 2025-26 (AY 2026-27)
| Category of Taxpayer | Original Due Date |
|---|---|
| Individuals, salaried taxpayers, and others not requiring audit | 31 July 2026 |
| Businesses/professionals requiring a tax audit (Section 44AB) | 31 October 2026 |
| Taxpayers requiring a transfer pricing report (international/specified domestic transactions) | 30 November 2026 |
If your original due date was 31 July 2026 and you have not filed yet, you are already in belated return territory. If your due date is 31 October or 30 November 2026, you still have time to file on time and avoid the late fee and interest discussed below entirely.
What Is a Belated Return (Section 139(4))?
A belated return is simply your income tax return filed after the original due date has passed. For AY 2026-27, you can file a belated return any time up to 31 December 2026, or before your assessment is completed by the department, whichever is earlier. It uses the same ITR forms as an on-time return — there is no separate form for late filing.
Late Fee and Interest on a Belated Return
| Situation | Amount |
|---|---|
| Total income above ₹5 lakh | ₹5,000 late fee (Section 234F) |
| Total income up to ₹5 lakh | ₹1,000 late fee (Section 234F) |
| Not required to file a return at all (income below basic exemption limit, no other mandatory-filing trigger) | No late fee |
| Any unpaid self-assessment tax | 1% per month (or part of a month) interest under Section 234A, from the day after the original due date until the date of filing |
Example
Suppose your total income is ₹8 lakh, your original due date was 31 July 2026, and you file on 20 September 2026 with ₹15,000 of tax still unpaid at the time of filing. You would pay a ₹5,000 late fee under Section 234F, plus interest under Section 234A at 1% per month (or part of a month) on the ₹15,000 for the roughly 2 months of delay — about ₹300, in addition to the tax itself.
What You Lose by Filing Late
Beyond the late fee and interest, a belated return has one important real cost — certain losses can no longer be carried forward to future years:
- Cannot carry forward: business losses, speculation business losses, and capital losses (short-term or long-term)
- Can still carry forward: loss from house property, and unabsorbed depreciation
- If tax payable (after TDS/advance tax) exceeds ₹10,000 and the return is still not filed, prosecution under Section 276CC is possible in serious cases — another reason not to delay beyond the belated return deadline
If you run a business or trade in shares and expect a loss this year, filing on time (not even belated) is the only way to preserve your right to carry that loss forward against future profits. Read more on our Income Tax Return Filing service.
What Is a Revised Return (Section 139(5))?
A revised return is used when you discover an omission or a wrong statement in a return you have already filed — whether that was an on-time return or a belated one. Common reasons to revise include a missed deduction, a wrong bank account for refund, an income source left out, or a mismatch spotted against Form 26AS/AIS after filing.
For AY 2026-27, the deadline to file a revised return is 31 March 2027, or before your assessment is completed, whichever is earlier. This is later than the belated return deadline of 31 December 2026 — a recent Budget 2026 amendment pushed the revised return cut-off from the earlier 31 December date out to 31 March. You can revise your return any number of times within this window, and each revised return replaces the one filed before it.
Missed Even the Belated Deadline? Updated Return (ITR-U)
If you miss both the original and the belated return deadlines, or you need to declare additional income you missed even in an earlier return, an Updated Return (ITR-U) under Section 139(8A) is available for up to 48 months from the end of the relevant assessment year — for AY 2026-27, that works out to 31 March 2031.
| Filed Within | Additional Tax (Section 140B) |
|---|---|
| 12 months from end of AY | 25% of additional tax + interest |
| 12–24 months from end of AY | 50% of additional tax + interest |
| 24–36 months from end of AY | 60% of additional tax + interest |
| 36–48 months from end of AY | 70% of additional tax + interest |
An ITR-U cannot be used to claim or increase a refund, cannot report a loss, and is not available if a search, survey, or assessment proceeding is already pending against you, or if you have already filed an ITR-U for that year. It is meant only to declare additional income and pay the extra tax due — not as a way to correct every kind of mistake, which is what the revised return is for.
Which Option Applies to You?
- Haven't filed at all yet, and it's before 31 December 2026 → File a belated return
- Already filed (on time or belated) but need to fix a mistake, before 31 March 2027 → File a revised return
- Missed 31 December 2026 entirely, or discovered extra income later → File an updated return (ITR-U)
ITR Filing Help
Rajput Lalit & Associates helps individuals and businesses file belated returns, revised returns, and updated returns (ITR-U) accurately, with the correct late fee and interest calculated upfront so there are no surprises. We serve clients in Ambala in person and across India online. Book a consultation or see our Income Tax Return Filing service.
Frequently Asked Questions
I missed the 31 July 2026 ITR due date. What should I do now?
You can still file a belated return under Section 139(4) of the Income Tax Act, 1961, any time up to 31 December 2026 (or before your assessment is completed, whichever is earlier). You will have to pay a late fee under Section 234F and interest under Section 234A on any unpaid tax, but filing late is far better than not filing at all.
What is the late fee for filing a belated return?
Under Section 234F, the fee is ₹5,000. If your total income does not exceed ₹5 lakh, the fee is limited to ₹1,000. If you are not required to file a return at all (your income is below the basic exemption limit and none of the mandatory-filing conditions apply to you), no late fee applies even if you file after the due date.
Can I still claim a refund if I file a belated return?
Yes. You can claim a refund of excess TDS or advance tax paid even in a belated return, as long as you file within the Section 139(4) deadline. However, if any tax is still payable, interest under Section 234A continues to run until you actually file.
What is the difference between a belated return and a revised return?
A belated return (Section 139(4)) is your first return, filed after the original due date has passed. A revised return (Section 139(5)) is used to correct a mistake or omission in a return you have already filed — original or belated. You can revise a belated return too, as long as it is done within the revised return deadline.
What is the deadline to file a revised return for AY 2026-27?
For AY 2026-27, the deadline to file a revised return under Section 139(5) is 31 March 2027, or before completion of assessment, whichever is earlier. This deadline was extended from the earlier 31 December cut-off by a recent Budget 2026 amendment, so it is now later than the belated return deadline.
I missed even the 31 December belated return deadline. Is there any option left?
Yes — an Updated Return (ITR-U) under Section 139(8A) can be filed within 48 months from the end of the relevant assessment year (for AY 2026-27, up to 31 March 2031), subject to paying additional tax under Section 140B (25% to 70% of the extra tax and interest, depending on how late it is filed). An ITR-U cannot be used to claim a refund, increase a refund, or report a loss, and it is not available in certain situations such as a pending search, survey, or assessment.
Disclaimer: This article is for general information based on the Income Tax Act, 1961 (as applicable to AY 2026-27) and related amendments as of September 2026. Rules and portal processes change from time to time, so please verify the latest position or consult a professional before acting.