Revised Return Filing Rules and Deadlines

 Under the current Income Tax Act of India, the revision window for filing a revised Income Tax Return (ITR) under Section 139(5) is as follows: 

1. The Revision Deadline (As of AY 2025-26)

A revised return must be filed within the (below-mentioned) time frame, whichever is earlier: 

• i) December 31st of the relevant Assessment Year (AY). 
• ii) before the completion of the assessment by the Income Tax Department, if the assessment is done earlier. 

Example: 

For the Financial Year (FY) 2024-25, the Assessment Year is 2025-26. The last date to file a revised return is 31 December 2025, provided the assessment is not completed before that. If the assessment is done earlier, say within September 2025, the revised return is to be filed within that period.

Note:

So, if you have missed that opportunity to file a revised return (for any mistakes/omissions), you can no longer file a Revised Return. But, there is a chance to file an Updated Return, which is explained at the bottom of this post.

2. Important Rules for Revision 

• Eligibility: You can revise your return if you discover any error or omission in your original ITR.
• Late Filed Returns: A belated return (filed after the original due date) can also be revised within this timeframe. 
• Multiple Revisions: There are no restrictions on how many times a return can be revised, as long as it is submitted by the deadline. 
• Original Return: The revised return completely replaces the original return. 

What to Do if I Miss the Deadline? 

If the 31st December deadline is missed, you cannot file a regular revised return. 

However, you can file an Updated Return (ITR-U) under Section 139(8A) within 24 months from the end of the relevant assessment year, subject to payment of additional taxes/penalties. 

Future Changes for Revised Return Filing (Budget 2026 Proposal) 

According to recent announcements in the Budget 2026 (for FY 2025-26 onwards), the deadline for filing revised returns is proposed to be extended to 31st March of the Assessment Year (i.e., 12 months after the end of the financial year, instead of 9 months), with a nominal fee applied after 31st December. 

Note: 

For the Financial Year 2024-25, the 31st December 2025 deadline still applies, which already expired on 31st December 2025. So, you should file an Updated Return (not the Revised Return). 

For the Financial Year 2025-26, the deadline allows you to submit Revised Returns till 31st March 2027(if duly passed and enforced by the IT Department) by paying a nominal fee for the period 1st January to 31 March 2027.