You filed, and then you noticed - a deduction you forgot to claim, an interest income you overlooked, a figure keyed in wrong. This is ordinary and fixable. The law expressly allows you to correct a filed return by submitting a revised return under Section 139(5).
What matters is doing it within the window, and knowing which situations call for a revised return rather than something else.
When to file a revised return
A revised return is the right instrument whenever you discover an omission or a wrong statement in a return you have already filed. Common triggers:
- You forgot to claim a deduction you were entitled to - a premium paid, an NPS contribution, a donation.
- You omitted an income source, such as savings account interest, fixed deposit interest, or a freelance payment.
- You reported an incorrect amount, or made a computation error.
- You selected the wrong ITR form and need to correct your filing.
- Your AIS or Form 26AS shows income that your return does not.
Importantly, a revision can go in either direction. It is not only for reducing your tax - if you under-reported income, revising proactively is exactly what you should do, and it is far better than waiting for the department to raise the point.
The deadline you actually get
This is where the most common misinformation appears. A revised return is not open for a year from the date you filed.
Under Section 139(5), a revised return may be filed up to 31 December of the relevant assessment year, or before the completion of the assessment, whichever is earlier. So for a return relating to FY 2025-26 (assessment year 2026-27), the revision window ordinarily runs to 31 December 2026 - unless your assessment is completed sooner, which closes it.
A belated return can also be revised within the same window. And note the practical point: your original return must have been verified for it to exist as a return at all. An unverified submission is not a filed return, and there is nothing to revise.
How to file a revised return
The process runs through the same e-filing portal as your original return.
Step 1: Log in and start a new return. Log in to the official income tax e-filing portal and go to the file-return section for the relevant assessment year.
Step 2: Select the return type as revised. Choose the option indicating that the return is being filed under Section 139(5) as a revised return, rather than an original return.
Step 3: Enter the original return's details. You must quote the acknowledgement number and filing date of the original return you are revising. Keep the acknowledgement handy - the portal will not proceed without it.
Step 4: Correct the return in full. A revised return replaces the original entirely. Complete the whole return with the corrected figures, not merely the fields you are changing.
Step 5: Recompute the tax. Let the system recalculate your liability. If the revision increases your tax, pay the balance, along with any interest that applies, before submitting.
Step 6: Submit and e-verify. As with any return, the revision only takes effect once it is verified. E-verify immediately.
Will a revision attract a penalty?
Revising a return is a legitimate statutory right, and correcting a genuine error of your own accord is not itself a penalised act. The nuance is what the revision reveals:
- If the revision increases your tax liability, you pay the additional tax together with the interest that has accrued on it. That interest is not a penalty - it is the cost of the tax having been paid late.
- If you revise proactively, before the department has raised the issue, you are in a materially stronger position than if the discrepancy is discovered for you.
- Misreporting or deliberate under-reporting is a different matter. Where a claim was not a genuine error, penalty provisions can apply, and a revision does not launder a false claim.
The practical rule: the moment you notice something is wrong, fix it. Delay narrows your options and worsens your position.
What if the revision window has closed?
If 31 December of the assessment year has passed, a revised return is no longer available to you - but you may still not be out of options. An updated return (ITR-U) allows certain taxpayers to update a return within a longer window, subject to conditions and an additional tax.
ITR-U is a narrower instrument than a revised return, and it cannot be used simply to claim a refund or reduce your liability. Our guide to the belated, revised and updated return (ITR-U) sets out which route applies to which situation.
Frequently Asked Questions
How long do I have to file a revised return?
Up to 31 December of the relevant assessment year, or until your assessment is completed, whichever comes first. The window is not one year from the date you filed.
How many times can I revise a return?
There is no fixed cap on the number of revisions within the available window, but each revision replaces the one before it. Repeated revisions invite questions, so it is far better to get the corrected return right in one pass.
Can I revise a belated return?
Yes. A belated return can be revised within the same window that applies to revisions generally.
Do I have to pay a penalty to revise my return?
Revising is not itself penalised. If the revision increases your tax, you pay that tax plus the interest accrued on it. Deliberate misreporting is treated differently and can attract penalty provisions.
What if I have already been issued a notice about the error?
Once the department has raised the issue, your position is weaker than if you had corrected it yourself. Speak to a professional about how to respond rather than simply filing a revision.
Let Regikart correct it properly
A revised return replaces your original filing in full, which means a careless revision can introduce fresh errors while fixing old ones. Regikart's Chartered Accountants review what went wrong, reconcile your return against Form 26AS and the AIS, and file the correction cleanly within the window.
We handle income tax filing and corrections for clients across India, from offices in Kolkata, Delhi, Gurugram, and Pune. If you have spotted an error - or received a notice about one - talk to us before you file anything further.
About the author
Suresh Iyer
Direct Tax Advisor at Regikart. Want to discuss this in the context of your business?
