Belated & Revised Return vs ITR-U: What's the Difference
Missed the ITR due date, spotted a mistake after filing, or realised months later that you forgot to report some income? Indian tax law gives you three separate routes back to compliance — a belated return, a revised return, and an updated return (ITR-U) — and each has a different deadline, cost, and purpose. Confusing them is common, and filing the wrong one can mean paying more than necessary or missing your window entirely. Here's how they actually differ.
Belated return — Section 139(4)
A belated return is simply a return filed after the original due date has passed. If you had no reasonable excuse and simply missed the deadline (typically 31 July of the assessment year for most individuals), you can still file under Section 139(4) any time up to 31 December of the assessment year, or before completion of assessment, whichever is earlier. The catch: a late-filing fee under Section 234F applies (Rs 1,000 if total income is up to Rs 5 lakh, Rs 5,000 otherwise), interest under Section 234A accrues on any unpaid tax, and certain losses (other than house property loss) cannot be carried forward.
Revised return — Section 139(5)
A revised return is for correcting an error or omission in a return you already filed — whether that original return was filed on time or was itself a belated return. Common reasons include a wrong bank account number, a missed deduction, an income head reported incorrectly, or a TDS entry that doesn't match Form 26AS/AIS. Crucially, a revised return replaces the earlier one entirely and carries the same deadline as a belated return — 31 December of the assessment year, or completion of assessment, whichever is earlier. There is no separate late fee for revising, but any additional tax due still attracts interest.
Updated return (ITR-U) — Section 139(8A)
ITR-U exists for a narrower, more serious situation: you've missed both the original and the 31 December deadline, and you want to correct your tax position by declaring additional income that increases your tax liability. Introduced to encourage voluntary compliance, an updated return can now be filed within 48 months (4 years) from the end of the relevant assessment year — extended from the earlier 24-month window by the Finance Act, 2025, applicable from AY 2026-27 onward. The trade-off is an additional tax on top of the regular tax and interest otherwise payable.
| Filed within | Additional tax on the extra tax liability |
|---|---|
| Up to 12 months from end of relevant AY | 25% |
| 12 to 24 months | 50% |
| 24 to 36 months | 60% |
| 36 to 48 months | 70% |
Who cannot file ITR-U
- To claim or increase a refund, or to report a loss (unless a specific relaxation applies) — ITR-U is only for reporting income that raises your tax liability, not for lowering it.
- If it would reduce the total tax liability determined in the earlier return.
- If a search under Section 132, requisition under Section 132A, or survey under Section 133A has been initiated against you for that year.
- If assessment, reassessment, or revision proceedings are pending or completed for that assessment year.
- If prosecution proceedings have been initiated for that year, or the Assessing Officer has information under specific information-sharing agreements against you.
Belated vs revised vs ITR-U — quick comparison
| Feature | Belated return | Revised return | ITR-U |
|---|---|---|---|
| Section | 139(4) | 139(5) | 139(8A) |
| Purpose | File a return you missed | Correct an error in a filed return | Report extra income long after deadline |
| Deadline | 31 Dec of assessment year | 31 Dec of assessment year | 48 months from end of relevant AY |
| Extra cost | Late fee u/s 234F + interest | Interest only, if tax due | 25% to 70% additional tax |
| Can lower tax/claim refund? | N/A | Yes, if error inflated tax earlier | No — only to increase liability |
Not sure which return you need to file, or how much extra tax ITR-U will cost you?
Get help filing your ITR on KyaTax →Frequently asked questions
Can I file a revised return after the belated return deadline?
No. Both belated returns (Section 139(4)) and revised returns (Section 139(5)) share the same outer deadline — 31 December of the relevant assessment year (or completion of assessment, whichever is earlier). After that date, only an updated return (ITR-U) under Section 139(8A) remains available, and it comes with additional tax and stricter conditions.
Can ITR-U be used to claim a refund or reduce my tax liability?
No. ITR-U can only be filed to report income that increases your total tax liability. It cannot be used to claim an additional refund, increase a refund already claimed, or reduce the tax liability shown in an earlier return.
How much extra tax do I pay if I file ITR-U?
On top of the tax and interest otherwise due, ITR-U requires additional tax on the increase in liability: 25% if filed within 12 months of the end of the relevant assessment year, 50% within 12-24 months, 60% within 24-36 months, and 70% within 36-48 months, as per the extended window introduced by the Finance Act, 2025.
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