What is the last date for a belated return for AY 2026-27?

A belated return for AY 2026-27 can be filed up to 31 December 2026, with a Section 234F late fee and interest on unpaid tax. A belated return is taxed under the new regime only.

What is the difference between a revised and an updated return?

A revised return corrects a return you already filed and can be filed up to 31 March 2027 for AY 2026-27, with no extra tax. An updated return (ITR-U) is for later corrections up to 48 months from the end of the assessment year, but requires paying additional tax.

How much additional tax is there on an updated return (ITR-U)?

Additional tax on the extra tax and interest is 25% if filed within 12 months of the assessment year end, 50% within 24 months, 60% within 36 months, and 70% within 48 months.

Blog · Guides · 12 Jul 2026 · 6 min read

Belated, Revised & Updated (ITR-U) Returns AY 2026-27

Missed the deadline, or spotted a mistake after filing? There's a way to fix it — here's which one you need.

The three types at a glance

Type	When to use	Deadline (AY 2026-27)	Cost
Belated	You missed the original due date	31 Dec 2026	₹5,000 / ₹1,000 late fee + interest
Revised	Correcting a return you already filed	31 Mar 2027	No extra tax
Updated (ITR-U)	Fixing/declaring after those windows close	31 Mar 2031 (48 months)	Additional tax (see below)

Belated return

File up to 31 December 2026 if you missed the 31 July / 31 August deadline. You'll pay the Section 234F fee (₹5,000, or ₹1,000 if income ≤ ₹5 lakh) plus interest, you can't carry forward most losses, and it's taxed under the new regime only. Details: last date & penalties.

Revised return

Made a genuine error (missed income, wrong deduction) in a return you already filed? You can revise it any number of times up to 31 March 2027 for AY 2026-27, with no additional tax. This is the cleanest way to fix mistakes.

Updated return (ITR-U)

If the belated/revised windows have closed, an ITR-U lets you come clean up to 48 months from the end of the assessment year (so up to 31 March 2031 for AY 2026-27). It requires additional tax:

Filed within	Additional tax
12 months	25% of tax + interest
24 months	50%
36 months	60%
48 months	70%

ITR-U can't be used to claim a refund or reduce your tax — only to declare more income/pay more tax.

Need to fix a return? A CA can help

Belated, revised or ITR-U — we work out the cheapest correct route and file it for you.

Fix my return with a CA →

General information for AY 2026-27, not individual tax advice. Deadlines and additional-tax rules have conditions; verify for your case. Reviewed by a Chartered Accountant.