Updated Return (ITR-U)

A note on the law: section numbers here are from the Income tax Act, 1961, the operative law for the current filing cycle. The Income tax Act, 2025 folds the updated-return provision, currently Section 139(8A), into its broader return-of-income framework under Section 263, from returns filed for Tax Year 2026-27 onward. This article is for general information and does not constitute tax advice.

Section 139(8A) (updated return provision) lets you fix a return, or file one you missed, even after the normal window closes.

What ITR-U cannot do

Worth stating plainly rather than leaving it implied, since this is the single most common point of confusion with the form. ITR-U can only report additional income and pay the resulting additional tax. It cannot be used to claim a refund, increase a refund already claimed, reduce the tax liability shown in the original return, or report or increase a loss. If the original return showed a nil-tax or refund position, an updated return still cannot turn that into a smaller liability, it can only add to what is already owed.

Filed within	Extra tax on top of what you owe
12 months from end of assessment year	25%
12 to 24 months	50%
24 to 36 months	60%
36 to 48 months	70%

What that percentage actually applies to: the aggregate of the additional tax due on the newly declared income, plus any interest that applies on it, not just a flat markup on the tax figure alone. Filing earlier genuinely costs less.

Beyond that, other conditions also block it entirely: a search or survey started against you, assessment proceedings pending or completed for that year, or having already filed one ITR-U for that year.

Voluntary disclosure through ITR-U is treated very differently from being caught. If the department discovers the same omitted income first, through scrutiny, reassessment, or an information mismatch, you lose access to ITR-U for that year entirely, and face a materially worse position, potential penalty under Section 270A and possibly prosecution in serious cases, compared to simply declaring it yourself first.

Do not confuse this with a revised return. A regular revised return under Section 139(5) (return revision provision) is cheaper and faster, usable within roughly a year of the tax year ending, and can correct genuine errors either direction, more or less tax, covered in Revised Return. ITR-U only ever adds tax, and only after that earlier window has passed.

Three different costs that get confused with each other

Budget 2026 added a further change that sits right next to ITR-U’s escalating tax and is easy to conflate with it: the deadline for filing a belated or revised return was itself extended, from 31 December to 31 March of the assessment year. Filing in that newly extended window carries its own nominal fee, 5,000 rupees if taxable income exceeds 5 lakh rupees, 1,000 rupees if it doesn’t, a flat cost rather than a percentage. This is genuinely a third, separate charge, distinct from both the numbers above and below it:

1. Section 234F late fee: the standard fee for filing after the original due date but within the belated return window, unrelated to either of the two items below
2. The new nominal fee for the extended belated/revised window: 1,000 or 5,000 rupees depending on income, specifically for using the window Budget 2026 pushed out to 31 March, on top of whatever 234F fee already applied
3. ITR-U’s own escalating additional tax: the 25/50/60/70% structure in the table above, which only comes into play once you’re past the belated/revised return window entirely and filing an updated return instead

The practical upshot: someone correcting a return within the newly extended 31 March window pays a small flat fee and nothing like ITR-U’s escalating tax, as covered in Belated Return. It’s only once that window has genuinely closed that ITR-U, and its much steeper cost structure, becomes the only route left.