ITR Filing Deadline AY 2026-27: Due Dates, Late Fees, and What Happens If You Miss It

The deadlines for AY 2026-27

The ITR filing deadline is not a single date, it depends on who you are. For AY 2026-27 (income earned in FY 2025-26), the due dates are:

For most salaried people, the date that matters is 31 July 2026. These are the deadlines as they stand; the CBDT occasionally extends them, so confirm before relying on any date. Our income tax service tracks the applicable deadline for your category.

The late fee: Section 234F

The first cost of missing your deadline is a fixed fee under Section 234F. It is not interest, it is a flat charge added automatically when you file a belated return on the portal:

• ₹5,000 if your total income exceeds ₹5 lakh.
• ₹1,000 if your total income is up to ₹5 lakh.
• Nil if your income is below the basic exemption limit and you are filing voluntarily.

The important catch: this fee applies even if you owe no tax. A nil-tax return filed late still attracts 234F if you were required to file. So "I don't owe anything, why rush" is a costly misunderstanding, the fee is for late filing, not for late payment.

The interest: Section 234A

The second cost applies only if you have unpaid tax. Section 234A charges simple interest at 1% per month, or part of a month, on your outstanding tax, running from the day after the due date (1 August, for the 31 July filers) until you file and pay.

Because a part-month counts as a full month, the clock is unforgiving. If you owe ₹20,000 and file on 15 October, that is three part-months (August, September, October), so the 234A interest is ₹20,000 × 1% × 3 = ₹600, on top of the ₹5,000 fee. If your tax is already fully covered by TDS and advance tax, there is no 234A interest, though the 234F fee can still apply.

The costs people forget

The fee and interest are the obvious costs. The ones that hurt more are the rights you lose by filing late:

• You lose the old tax regime for that year. A belated return must be filed under the new regime, if the old regime saved you money (through HRA, 80C, home loan interest), that saving is gone for the year.
• You cannot carry forward losses. Business losses, capital losses and F&O losses can normally be carried forward to offset future gains, but only if you file by the due date. File late and those losses are forfeited.
• Your refund is delayed. Returns are processed in the order they are verified, so late filers go to the back of the queue, if you have a sizeable TDS refund, that can mean months of extra wait.
• Belated returns can draw more scrutiny and complicate loan and visa applications, which rely on your filed ITRs.

For anyone with an old-regime advantage or losses to carry forward, these hidden costs dwarf the ₹5,000 fee. That is the real reason to file on time.

Belated returns and the final cut-off

Missing 31 July is not the end, you can still file a belated return under Section 139(4) up to 31 December 2026, with the 234F fee and any 234A interest. After that, the belated window closes.

Beyond 31 December, your only route is an updated return (ITR-U), which can be filed within a longer window but comes with additional tax over and above the normal liability and does not allow a refund. So 31 December 2026 is effectively your last practical chance to file normally for the year. Our guide to belated and revised returns covers this in detail.

Why filing early pays

Filing is not just about avoiding penalties, filing early actively helps you:

• Faster refunds, because early verified returns are processed first.
• Loan and credit readiness, since banks ask for your last two to three years of ITRs.
• Smoother visa applications, where embassies often require ITR receipts as proof of income.
• Full flexibility, to choose the old or new regime and to carry forward any losses.

If your return is straightforward, filing early is a small task that removes a large risk. If it is not, capital gains, multiple properties, foreign assets, business income, that complexity is exactly why leaving it to the last week is dangerous. Our income tax and ITR service files it correctly and on time, whichever form applies to you.

Quick answers

What is the ITR deadline for AY 2026-27? 31 July 2026 for most individuals (ITR-1/ITR-2 non-audit), 31 August for non-audit ITR-3/ITR-4, 31 October for audit cases. What is the late fee? ₹5,000 under Section 234F, or ₹1,000 if income is up to ₹5 lakh. Is there interest too? Yes, 1% a month under Section 234A on unpaid tax. Can I file after 31 July? Yes, a belated return until 31 December 2026, with the fee. What do I lose by filing late? The old-regime option and loss carry-forward, plus a delayed refund. Want it filed on time? Our tax team handles it.