ITR-U: The Updated Return, 48 Months, and What It Actually Costs

The return for when the other two are gone

There are three ways to file or fix a return late, and most people reach for the wrong one because the differences are not obvious.

A belated return is one you file after the due date but within the belated window — for AY 2026-27, until 31 December 2026. A revised return corrects one you have already filed, within the revision window. An updated return is what remains when both of those have closed, and it is a different animal: expensive, one-shot, and available only in the direction of more tax.

If your belated or revised window is still open, use it. This article is for people whose window has closed, or who have just realised they never filed at all for a year some distance back. For the belated and revised routes, start with belated, revised and updated returns for AY 2026-27.

How long you have, and what it costs

The window was originally 24 months and was extended to 48 months from the end of the relevant assessment year. The additional tax ladder was extended along with it.

The percentage is applied to the aggregate of tax and interest payable on the additional income, and it sits on top of that tax and interest. So the headline is not "70 per cent tax" — it is 70 per cent again, on a figure that already includes interest that has been running since the original due date.

What ITR-U cannot do

This is the part that decides whether you are even in the right place. An updated return can only move in one direction.

• It cannot be filed to claim a refund, or to increase a refund you have already claimed. If your case is that the department owes you money, ITR-U is not the route and there is no route through it.
• It cannot be a nil return.
• It cannot be a return of loss. You cannot use it to declare a loss you failed to report, though you can use one to reduce a carried-forward loss or unabsorbed depreciation.
• It cannot reduce your total tax liability from what was determined earlier.
• It cannot be filed twice. One updated return per assessment year, ever.

The practical consequence: someone who missed filing a year in which they had a refund due, because TDS exceeded their liability, has genuinely lost that refund. There is no updated return that recovers it. That is a hard thing to hear and it is better heard before the fee is paid than after.

When ITR-U is barred entirely

Even where the window is open and the direction is right, the door may be shut for that year.

• A search under Section 132, or a requisition under Section 132A, has been initiated in your case for that year.
• A survey under Section 133A has been conducted, other than the limited TDS survey.
• Assessment, reassessment, revision or recomputation for that year is pending or has been completed.
• The assessing officer holds information about you under specified laws — the Prohibition of Benami Property Transactions Act, the Prevention of Money Laundering Act, the Black Money Act, or the Smugglers and Foreign Exchange Manipulators Act — and it has been communicated to you.
• Information has been received under an agreement with another country and communicated to you.
• Prosecution proceedings have been initiated for that year.

There is also a restriction where a reassessment notice under Section 148A has been issued after the 36-month point, unless an order is passed determining it is not a fit case for reassessment.

The theme is consistent: ITR-U is a voluntary-disclosure mechanism. Once the department has started looking at that year, voluntary is no longer available.

Which return is yours: a decision tree

Work down this list and stop at the first line that describes you.

• Have you already filed for the year and the revision window is still open? File a revised return. Free, unlimited revisions, no additional tax.
• Have you not filed, and the belated window is still open? File a belated return. Fee under Section 234F, interest under 234A, but no additional tax and your refund survives.
• Are both windows closed, and would the correction increase your income and your tax? ITR-U, at the applicable rate on the ladder.
• Are both windows closed and the correction would produce a refund? There is no route through ITR-U. Take advice — depending on the facts, a condonation application under Section 119(2)(b) may be the only avenue.
• Has a search, survey, assessment or reassessment already started for that year? ITR-U is barred. This is now a representation exercise, not a filing one.

Is it worth filing? A worked example

Suppose you failed to report ₹6,00,000 of professional income for a year, and the tax on it works out at ₹1,80,000. Interest under Sections 234A, 234B and 234C has been accruing since the original due date; assume it comes to ₹54,000.

Illustrative, and the interest figure will differ on your facts. But the shape is the point. The cost of the same disclosure roughly doubles across the window, and it does so on a base that is itself growing.

Against that, weigh what happens if you do not file. Undisclosed income that surfaces through the Annual Information Statement, a bank report or third-party data leads to reassessment, where the tax is the same, the interest is the same, and a penalty is available on top — a penalty that a voluntary updated return avoids. The comparison is rarely close for a disclosure of any size.

Before you file: get the data right

You get one attempt, so spend the time on the inputs.

• Download Form 26AS, the Annual Information Statement and the Taxpayer Information Summary for the year. Most people filing ITR-U are doing so because something in one of these does not match what they filed, and it is worth knowing exactly what the department can see.
• Reconcile bank credits for the year against what was reported. Do this before drafting, not after.
• Check whether the additional income changes your regime position, your presumptive eligibility, or triggers a tax audit requirement you did not previously have. Any of the three changes the return you are filing.
• Compute interest properly under Sections 234A, 234B and 234C. Getting this wrong is the most common defect in an updated return, and it cannot be corrected by filing another one.
• Pay the tax, interest and additional tax before filing, and keep the challan. The return will not validate without it.
• If there are multiple years to fix, deal with them together. They usually interact, and an updated return for one year that is inconsistent with another is worse than neither.

Given the one-shot rule, this is a poor place to save on professional fees. ITR filing covers updated returns, and where a notice is already in play, income tax notice handling is the relevant service.

Key takeaways

• 48 months from the end of the assessment year. AY 2026-27 runs to 31 March 2031.
• Additional tax of 25, 50, 60 or 70 per cent depending on when you file, on top of tax and interest.
• One updated return per assessment year. There is no second attempt.
• It can only increase income and tax. No refunds, no nil returns, no declaring a loss.
• It is barred once a search, survey, assessment or reassessment has begun for that year.
• The comparison is not "file or pay nothing" — it is "file voluntarily" against "be reassessed with a penalty".

Frequently asked questions