Fixing a missed or under-reported return, the extended window, and what the additional tax costs
The updated return (ITR-U) under Section 139(8A) lets you voluntarily file or correct a return where you missed it or under-reported income. The Finance Act 2025 extended the window from 24 to 48 months after the end of the tax year, but the cost rises the longer you wait: additional tax of 25% of the aggregate tax-and-interest if filed within 12 months, 50% within 24 months, 60% within 36 months, and 70% within 48 months, on top of the tax and interest itself. You cannot use ITR-U to reduce your tax, claim or increase a refund, or report or increase a loss.
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What ITR-U is for
ITR-U is a self-correction route. If you never filed for a year, or filed but left out income (a missed capital gain, undeclared receipts, a TDS mismatch you now want to fix), you can file an updated return and pay the tax with additional tax. It is meant to encourage voluntary compliance before the department catches the gap. It is not a refund mechanism, and it cannot turn a profit into a loss.
The additional-tax ladder
The additional tax is a percentage of the aggregate of the extra tax and the interest due. The earlier you file, the cheaper it is, which is the whole point of the design.
ITR-U additional tax by timing (FA2025)
Filed within (from tax year end)
Additional tax
12 months
25% of tax + interest
24 months
50% of tax + interest
36 months
60% of tax + interest
48 months
70% of tax + interest
tipIf you spot an omission, file the ITR-U sooner rather than later. Crossing from one band to the next (for example 50% to 60%) raises the additional tax on the whole amount, not just the part over the line.
When you cannot use ITR-U
The route is one-directional and is blocked in several situations.
warningITR-U can only increase your tax. If your correction would create a refund or a loss, ITR-U is not the route, you would need a revised return within its own (shorter) deadline, or to raise it in assessment.
It reduces your total tax, or claims or increases a refund
It reports a loss, or increases a loss already declared
A search under Section 132 or survey under Section 133A has been initiated for the year
Assessment, reassessment or revision is pending or completed for the year
You have already filed one ITR-U for that tax year (only one is allowed)
Income-tax Act 1961 s.139(8A) updated return (re-enacted in the Income-tax Act 2025)
Finance Act 2025 (extension of the ITR-U window to 48 months; 60% and 70% bands)
Income-tax Act 1961 s.140B (tax on updated return)
Frequently asked questions
How long do I have to file an ITR-U?+
Up to 48 months after the end of the tax year, following the Finance Act 2025 extension from the earlier 24-month limit. So for a recent year you have a four-year window, but the additional tax rises the longer you wait, from 25% up to 70% of the tax and interest.
How much extra does ITR-U cost?+
Additional tax on top of the tax and interest: 25% if filed within 12 months of the tax year end, 50% within 24 months, 60% within 36 months and 70% within 48 months. The percentage applies to the aggregate of the extra tax and the interest, so filing early is much cheaper.
Can I use ITR-U to claim a refund?+
No. ITR-U cannot reduce your tax, claim or increase a refund, or report or increase a loss. It only works where you owe more tax. If your correction would produce a refund or a loss, you need a revised return within its deadline or must raise it during assessment.
Can I file ITR-U after a tax notice?+
Not for a year where a search or survey has been initiated, or where assessment, reassessment or revision is pending or completed. ITR-U is a voluntary pre-emptive correction; once the department has opened the year, that route closes and you respond through the assessment process instead.