Missed the ITR Deadline? Belated Return Rules That Still Save You Money

The deadline has passed. The window has not.#

A record 7.8 crore income tax returns had been filed for Assessment Year 2026-27 by 31 August, about half a crore ahead of the same stage last year, the Income Tax Department said. Of those, 5.9 crore were ITR-1 and ITR-2 filings lodged before the 31 July cut-off.

If yours is not in that pile, nothing has closed. A belated return can still be filed, and for a lot of people the entire cost of being late is a flat fee: not a percentage of income, not a penalty proceeding, a fee. What did lapse when the clock ran out is a handful of benefits that no paperwork brings back. Telling the two categories apart is the whole exercise.

What a belated return is, and which date applied to you#

Every return runs on two dates: the due date, which is the statutory deadline for your category, and the belated deadline, which is the last day the department will accept the return at all.

This year the due dates were staggered. Salaried filers, pensioners and investors using ITR-1 or ITR-2 had until 31 July 2026. Those with business or professional income not subject to audit got an extra month: the Finance Minister proposed in the Budget that "non-audit business cases or trusts are proposed to be allowed time till 31st August" (Budget speech, paragraph 109), a change the Central Board of Direct Taxes has since placed in section 263(1)(c) of the Income-tax Act, 2025. Audit cases run to 31 October.

Miss your date and you file under section 139(4) instead. The department's tax calendar sets the limit plainly: a belated return may be furnished "at any time 3 months before the end of the relevant assessment year (i.e. till 31st December of the relevant assessment year) or before the completion of the assessment, whichever is earlier". This year, 31 December 2026.

One trap catches people certain they filed on time. Uploading a return is not filing it. Verification must follow within 30 days, and where a return "is uploaded within due date but e-verified or ITR-V submitted after 30 days of uploading, in such cases the date of e-verification/ITR-V submission shall be treated as the date of furnishing the return" (Income Tax Department). Uploaded on 30 July and verified in September is a belated return.

The bill is smaller than the folklore suggests#

Two charges apply, and neither scales with your salary. The first is the late-filing fee under section 234F: ₹5,000, reduced to ₹1,000 where total income does not exceed ₹5,00,000 (Income Tax Department). It is flat, so filing on 2 September costs the same as filing on 30 December.

The second is interest under section 234A, charged at "1% per month or part of a month" as simple interest, running from the day after the due date to the date the return is furnished (Income Tax Department). It applies only to tax still unpaid after credit for TDS, advance tax and reliefs.

That last clause is where the folklore falls apart. A salaried filer whose employer deducted the full amount has nothing outstanding, so section 234A produces zero. Anyone owed a refund is in the same position. For a great many late filers the arithmetic of delay stops at ₹1,000 or ₹5,000.

The bill grows for the self-employed and small businesses, where tax often has not been paid through the year. There, 1% a month stacks on interest already running under sections 234B and 234C for advance-tax shortfalls.

What actually expired on the due date#

Three things went, and together they are worth more than the fee.

Carrying losses forward#

A capital loss on shares or a business loss can be set against future income for up to eight years, but only if the return for that year "is furnished on or before the due date of furnishing the return, as prescribed under section 139(1)" (Income Tax Department). File late and the loss is not carried at all. An investor sitting on a ₹3 lakh capital loss has forfeited a shield against future gains and will not notice for years.

The old regime, for salaried filers#

The new regime is the default now. Non-business taxpayers can switch back inside the return itself, but the department is explicit that "such ITR is required to be filed on or before the due date specified under section 139(1)" (Income Tax Department). A belated filer is locked into the new regime for the year. Whether that costs anything is personal: with the section 87A rebate raised to a total income of ₹12,00,000 and a maximum of ₹60,000 from this assessment year, the new regime wins for most salaried people, though someone with a large home-loan interest claim and a full 80C can still lose by it.

Full interest on your refund#

Refund interest under section 244A runs from 1 April of the assessment year only where the return was furnished by the due date. Otherwise it runs "from the date of furnishing of return of income to the date on which the refund is granted" (Income-tax Act, 1961). At the statutory half a per cent a month, five months of delay on a ₹40,000 refund costs about ₹1,000.

What survives, which is the part most people get wrong#

A belated return is not a hollow exercise. It still gets you your refund, because the deadline restricts carry-forward and not repayment, and it still gets you credit for TDS and advance tax. Two losses also cross the line: house property loss "can be carried forward even if the return of income/loss of the year in which loss is incurred is not furnished on or before the due date", and unabsorbed depreciation sits outside the restriction (Income Tax Department). For a landlord with a home loan, that carve-out often beats the ₹5,000 fee.

A belated return can also be corrected. The department confirms that "a belated return can be revised to correct errors or omissions" (Income Tax Department), and this year the revision window shuts on the same 31 December. From the next cycle it lengthens: the Budget proposed extending revision "from 31st December to up to 31st March with the payment of a nominal fee", set by the CBDT at ₹1,000 or ₹5,000 depending on whether total income crosses ₹5 lakh.

There is also a reason not to sit on it. Section 276CC allows prosecution for failure to furnish a return, with imprisonment of "not less than three months" in ordinary cases (Income-tax Act, 1961). The department reserves it for wilful non-filers with substantial tax outstanding, not for a late salaried return, but it stops being available against anyone who has filed.

After 31 December, the price changes shape#

Once the belated window shuts, the only route left is the updated return under section 139(8A), filed on form ITR-U. It runs "48 months from the end of the relevant assessment year", but the toll climbs: 25% of tax and interest within 12 months, 50% within 24, 60% within 36 and 70% within 48 (Income Tax Department).

The harder limit is what ITR-U cannot do. It must not be a return of loss, must not decrease your total tax liability, and must not produce a refund or increase one already due. So the taxpayer owed money by the government, the very person for whom filing late felt harmless, loses that money for good at midnight on 31 December. Practitioners say the same: an updated return "cannot be filed to claim or enhance refunds, even if arising from TDS/TCS" (Business Standard).

Three routes, compared#

Key takeaways#

1. The belated window for AY 2026-27 closes on 31 December 2026. The due dates behind it were 31 July, 31 August or 31 October by category.
2. For most salaried filers the cost is a flat ₹1,000 or ₹5,000, because section 234A interest bites only on tax still unpaid.
3. Capital and business losses stop being carried forward once the due date passes. House property loss and unabsorbed depreciation do not.
4. A belated filer is locked into the new regime for the year, which matters less than it used to, though not for everyone.
5. After 31 December the refund goes. ITR-U cannot be used to claim one, however much TDS sits in your Form 26AS.

Frequently asked questions#

Can I still get my refund if I file in October? Yes. A belated return preserves the refund claim and the TDS credit. Only the interest changes, running from the date you file rather than from 1 April.

I filed on 29 July but forgot to e-verify. Am I late? Not if you verified within 30 days. Beyond that, the verification date becomes your filing date, and if it falls after your due date the return is belated.

Can I switch to the old regime in a belated return? No. For non-business taxpayers the regime is chosen in a return filed by the section 139(1) due date.

Can a belated return be revised? Yes, and for this year the revision window also ends on 31 December 2026.

I have a loss to carry forward and I have missed the date. Should I bother? File anyway. You keep the refund, the TDS credit and any house property loss or unabsorbed depreciation. The business and capital losses for that year are gone either way.

Glossary#

Assessment Year (AY): the year in which the previous financial year's income is assessed. Income earned in FY 2025-26 is assessed in AY 2026-27.

Belated return (section 139(4)): a return filed after the due date but within the statutory window, ending 31 December 2026 for this year.

Section 234F fee: the flat late-filing fee of ₹5,000, or ₹1,000 where total income is ₹5 lakh or less.

Section 234A interest: simple interest at 1% a month on tax still unpaid, from the day after the due date to the date of filing.

ITR-U (section 139(8A)): an updated return disclosing additional income within 48 months of the end of the assessment year, on payment of 25% to 70% additional tax.

Unabsorbed depreciation: depreciation on business assets not set off in the year it arose. It carries forward without the timely-filing condition.

References#

1. Income Tax Department, record 7.8 crore ITRs filed for AY 2026-27, departmental statement reported 1 September 2026
2. Government of India, Budget 2026-27 speech of Nirmala Sitharaman, paragraphs 108 and 109
3. Central Board of Direct Taxes, FAQs on Budget 2026
4. Income Tax Department, income tax returns help page
5. Income Tax Department, return of income
6. Income Tax Department, interest payable by the taxpayer under the Income-tax Act
7. Income Tax Department, set off and carry forward of losses under the Income-tax Law
8. Income Tax Department, ITR-V FAQs and the 30 days' timeline for e-verification
9. Income Tax Department, salaried individuals for AY 2026-27
10. Income-tax Act, 1961, section 244A
11. Income-tax Act, 1961, section 276CC
12. Income Tax Department, updated return of income
13. Government of India, memorandum to the Finance Bill, 2025, section 87A rebate
14. Business Standard, belated return: claim refunds, credits, carry forward house property loss

This piece explains the law as published by the Income Tax Department and in the Union Budget documents. It is general information, not tax or investment advice. Circumstances differ, so check your own position with a qualified tax professional before acting.