Missed the ITR Deadline? How to File a Belated Return Today

Yes, you can still file. If you missed the due date for FY 2025-26 (assessment year 2026-27), you can file a belated return on the e-filing portal until 31 December 2026. You pay a late fee of Rs 1,000 or Rs 5,000, plus interest on any unpaid tax, and you e-verify within 30 days.

Which deadline did you actually miss?

Start here, because not everyone had the same date. A belated return simply means a return filed after your own due date. The law that allows it is section 139(4) of the Income-tax Act, 1961. The new Income-tax Act, 2025 started on 1 April 2026, but your FY 2025-26 return still follows the 1961 Act.

If you sell on Amazon, Flipkart or Meesho and your books are not audited, your date was 31 August 2026. So what does being late cost you?

What you pay for filing late

The late fee

Section 234F charges a flat fee. It is Rs 1,000 if your total income is up to Rs 5 lakh, and Rs 5,000 if it is higher. The fee is the same whether you are one day late or four months late. That is the one piece of good news: waiting has not made the fee bigger, but waiting further brings no benefit either.

Interest on unpaid tax

If you still owe tax, section 234A adds simple interest of 1% for every month or part of a month from the day after your due date until you file. Even one day into a new month counts as a full month. If TDS and advance tax already cover your full liability, this interest is nil. Separate interest can also apply if you skipped advance tax during the year.

What you lose besides money

Your choice of tax regime. The new regime is the default. The income tax portal's own guidance says the old regime can be chosen only on or before the due date under section 139(1). Sellers and professionals do it through Form 10-IEA by that date. In a belated return you are taxed under the new regime. If you were counting on deductions such as 80C, home loan interest or HRA, work out the tax again without them.

Loss carry-forward. A business loss or a capital loss (say, from shares) can be carried to future years only if the return is filed by the due date. File late and that loss cannot be carried forward. Most tax publishers agree that house property loss and unabsorbed depreciation still carry forward, though we found one page that says otherwise, so confirm this if it affects you.

Time. Any refund comes later, and the window to correct mistakes is shorter.

How to file a belated return on the e-filing portal

1. Collect your papers: Form 16 or sales and expense summary, bank statements, and the TDS certificates from your marketplaces.
2. Log in at incometax.gov.in with your PAN. Open your AIS and Form 26AS and note every income and TDS entry shown there.
3. Go to e-File, then Income Tax Returns, then File Income Tax Return. Choose assessment year 2026-27 and the online mode.
4. Pick your status and the right form. ITR-4 suits most small sellers on presumptive taxation. ITR-3 is for business with regular books.
5. In the filing section, select "139(4), belated return". This is the step people miss.
6. Fill in income, check the pre-filled data against your own records, and let the portal compute tax, the 234F fee and interest.
7. Pay the amount due through e-Pay Tax. The challan details then flow into the return.
8. Preview, submit, and e-verify with Aadhaar OTP, net banking or a bank or demat account code.

Menu labels on the portal change from time to time. If a label differs, look for the same idea under e-File.

E-verify within 30 days, or the return is not filed

You have 30 days from upload to e-verify or to send a signed ITR-V to CPC Bengaluru. Verify within 30 days and your upload date is the filing date. Verify later and the verification date becomes the filing date. A return that is never verified is treated as invalid. If you upload on 28 December and verify in late January, your return has effectively missed 31 December. Verify the same day.

A worked example

Neha sells kurtis on Meesho. Her books are not audited, so her due date was 31 August 2026. Her total income is Rs 14,00,000. After TDS and the advance tax she paid, she still owes Rs 30,000. She files on 20 November 2026.

• Late fee under section 234F: Rs 5,000, because her income is above Rs 5 lakh.
• Interest under section 234A: 1% a month for September, October and November. That is 3% of Rs 30,000, or Rs 900.
• Extra cost of being late: Rs 5,900, on top of the Rs 30,000 tax.

If she waits and files on 5 January 2027, the belated route is closed. If her total income had been Rs 4,20,000, the fee would have been Rs 1,000.

The mistake people usually make

They treat 31 December as the day to start. Then the AIS shows an entry they did not expect, the tax payment takes a day to reflect, or the OTP does not arrive. The second common mistake is filing the belated return with last year's old regime numbers. The portal will not accept the old regime in a late return, and the tax due can jump. Run the new regime numbers first, so the figure does not surprise you at the payment step.

What if you miss 31 December too?

You are left with the updated return, called ITR-U, under section 139(8A). It can be filed up to 48 months after the end of the assessment year, which for AY 2026-27 means 31 March 2031. It comes with conditions. You cannot use it to claim or increase a refund or to report a loss. You also pay additional tax: 25% of the tax and interest if you file within 12 months of the end of the assessment year, and 50% in the next 12 months, with higher rates after that. It is a fallback, and an expensive one.

Should you do this yourself?

If you have salary, one house and bank interest, you can file a belated return yourself in an evening. Get help if you have marketplace sales with TDS entries that do not match your books, capital gains, a loss you hoped to carry forward, or a regime switch that changes your tax by a large amount. A wrong late return costs you a second round of fixing with less time left.

Frequently asked questions

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