Use a revised return when the section 139(5) correction window is open. An updated return (ITR-U) is a later, more restricted route that can carry additional tax. Your assessment year, the date and status of the original return, whether the correction raises or lowers tax, its effect on a refund or loss, and any notice or assessment proceeding determine which route is legally available.
Revised return or ITR-U: the short answer
A revised return is the normal way to fix a mistake in an income-tax return that you have already filed. The Income Tax Department’s ITR-1 FAQ describes the situation plainly: “If you later discover that you have made a mistake in an already submitted return, you can re-submit or revise your return.” You must still be within the applicable section 139(5) period and should check whether assessment has been completed.
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An updated return, filed in Form ITR-U, is not a general extension of the revised-return facility. It is a statutory mechanism for updating eligible income or reducing a reported loss after the ordinary correction route has closed or when the law otherwise permits it. ITR-U restrictions can prevent you from using it to report a loss, reduce tax payable, or obtain or increase a refund. Additional tax is built into the form, and the percentage depends on when you file and, in one category, on the type of notice involved.
Because the rules differ by assessment year, never choose a form solely because it is available on the filing portal. First identify the assessment year, then test the correction against the relevant deadline, tax effect and exclusion rules.
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What each return is designed to do
Revised return under section 139(5)
A revised return replaces the return already submitted for the same assessment year. It is intended for an error or omission discovered after filing: for example, a calculation mistake, omitted income or deduction, or an incorrect schedule that changes the figures in the return. The revised filing must identify the original return and acknowledgement as required by the applicable form and utility.
The revised return is still a return for that assessment year, not a separate settlement of tax. Recalculate total income, tax, interest and any applicable fee using the correct facts. If the correction increases tax, pay the amount shown by the computation and preserve the challan and acknowledgement. If it changes a refund, the department will process the revised figures under the normal rules; filing a revised return does not guarantee that a refund will be issued.
Updated return (ITR-U)
Form ITR-U is headed: “For persons to update income/reduce loss within forty-eight months from the end of the relevant assessment year.” The current form, notified by CBDT Notification No. 52/2026 dated 30 March 2026, describes a 48-month filing window. It is therefore a later correction mechanism, but only for cases that satisfy the statutory conditions.
The form includes reason choices such as “Income not reported correctly,” “Wrong heads of income chosen,” and “Wrong rate of tax.” Those labels help explain the kinds of errors the form contemplates; they do not override the eligibility tests. An ITR-U calculation must include the additional tax prescribed for the period in which it is filed.
Check the assessment year and deadline first
AY 2025-26
The Income Tax Department’s FAQ lists 31 December 2025 as the revised-return deadline for assessment year 2025-26. That date has passed. A taxpayer correcting an AY 2025-26 return in October 2026 should therefore examine ITR-U eligibility rather than assuming a revised return can still be filed. Other statutory restrictions and the status of assessment still matter.
AY 2026-27 and the transition between Acts
The department’s AY 2026-27 guidance says filings for AY 2026-27 and earlier continue under the Income-tax Act, 1961, even though a filing may occur after the new Act takes effect. In its example, the revised return under the old Act is described as due before the end of the assessment year or completion of assessment, whichever is earlier. The same FAQ flags a proposed change to the revised-return period.
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A proposal is not the same as enacted law. Before filing for AY 2026-27, verify the final legislation, commencement date and any department notification that applies on the day you file. Do not rely on an article, software prompt or an earlier version of the FAQ when the department has marked the rule as proposed.
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For any other year, read the deadline attached to that assessment year and the law in force for that filing. A return filed late, an assessment already completed, or a notice issued after the original filing can change which options remain. Record the assessment year, original filing date, acknowledgement number and current proceeding status before selecting a form.
When a revised return is usually the right route
- The original return was filed and you discovered a genuine error or omission.
- The applicable section 139(5) period for that assessment year is still open.
- There is no completed assessment or other event that prevents the revision under the applicable law.
- You can recompute the return from supporting records and disclose the correction completely.
A revised return may increase tax, reduce a refund, increase a refund or alter a loss, depending on the error. The key advantage is that it is the ordinary correction process, not a late update with ITR-U additional tax. That does not mean it is cost-free: tax payable, interest, late-filing consequences and other statutory amounts can still arise from the corrected figures or from the original filing history.
Typical revised-return examples
- You omitted interest income from a bank statement and the revised computation increases taxable income.
- You selected the wrong head of income and need to move an item to the correct schedule.
- You entered a deduction incorrectly and the correction reduces the refund or increases tax.
- You made a calculation or data-entry mistake but the revised-return deadline has not expired.
When ITR-U may be available after the revised window
If the revised-return deadline has closed, test ITR-U against the statutory conditions for that assessment year. The 2026 form describes filing within 48 months from the end of the relevant assessment year, divided into four periods:
| Time from the end of the assessment year | Additional-tax band shown in Form ITR-U |
|---|---|
| Up to 12 months | 25% |
| More than 12 months and up to 24 months | 50% |
| More than 24 months and up to 36 months | 60% |
| More than 36 months and up to 48 months | 70% |
These percentages are bands in the notified form, not a flat fee applied to gross income. The form’s liability calculation determines the base, and the applicable legislation controls the computation. A later filing can therefore be materially more expensive than correcting the same error through a timely revised return.
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The central ITR-U restrictions
The department’s eligibility notice states that an updated return is ordinarily not available where the filing:
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- reports a loss;
- reduces the tax liability determined from the earlier return or returns;
- creates a refund; or
- increases a refund already claimed.
In practical terms, ITR-U is designed to bring additional income or tax into the record, not to reopen a closed year to obtain a tax benefit. A correction that would lower taxable income, increase a carried-forward loss or produce a larger refund may fail this test even if the underlying mistake is genuine.
Proceedings and information-related exclusions
The same notice lists further bars connected with prior ITR-U filings, specified notices and proceedings, and information received through search, survey or other statutory channels. An assessment, reassessment or recomputation process can also affect eligibility. The exact bar depends on the provision and the facts; a portal accepting a form does not establish that the filing is legally valid.
Pause and obtain a case-specific review if you have received a notice, faced a search or survey, are in assessment or reassessment, or have already filed an updated return for the year. Keep every notice and response together with the original return before deciding.
Special additional-tax bands for a section 148 response
Form ITR-U separately shows additional-tax bands of 35%, 60%, 70% and 80% for the specified return filed in response to a section 148 notice. Those figures are not the ordinary ITR-U bands. Whether this category applies depends on the notice, the return being furnished and the statutory conditions. Do not substitute the 25%–70% table for the section 148 calculation or assume that receiving any tax notice automatically puts you in this category.
How to choose: a practical decision path
- Identify the assessment year. Write down the year, the original return type, filing date and acknowledgement number. Check the department’s current guidance and the law applicable to that year.
- Check the revised-return deadline. For AY 2025-26 the department lists 31 December 2025. For AY 2026-27, confirm the final rule because the FAQ describes a transition and flags a proposal. For other years, use the year-specific deadline.
- Describe the correction precisely. State the omitted income, wrong head, wrong rate, deduction error or calculation mistake. Rebuild the computation from records rather than changing only the final tax number.
- Measure the tax effect. Does the correction increase tax, reduce tax, create or increase a refund, or report or increase a loss? A result that reduces liability or creates/increases a refund is a major ITR-U warning sign.
- Check proceedings and prior filings. Review notices, assessment or reassessment status, search or survey history and whether an ITR-U has already been filed. Apply the specific statutory exclusions.
- Compare the cost. A timely revision can still involve tax, interest or other statutory amounts. ITR-U adds the applicable 25%–70% band, or the separate 35%–80% section 148 bands, to the form’s liability calculation.
- File through the correct utility and retain proof. Validate schedules, pay any amount shown as due, submit the return, complete verification within the permitted process and save the acknowledgement, computation, challans and supporting documents.
If the revised window is open and the correction is otherwise valid, the revised-return route is generally the first option to examine. If it is closed, ITR-U is only the next option after the restrictions and additional tax have been tested; it is not an automatic substitute.
Worked decision examples
An omitted income item that increases tax
You filed an original return and later find an interest statement that was not included. The revised deadline for your assessment year is still open. Recalculate the return with the interest, submit a revised return and pay the resulting tax and interest, if any. There is no reason to choose ITR-U merely because it is a newer form.
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A correction that would increase a refund
You discover that eligible tax deducted at source was left out and adding it would increase your refund. If the revised period remains open, investigate the revised-return route. ITR-U generally cannot be used where the result is a new or larger refund, so filing an updated return for that purpose can be invalid.
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A late correction that reduces tax
You find a deduction that would lower the liability after the revised deadline. ITR-U generally cannot be used to reduce the tax liability from the earlier return. The restriction means you need professional advice on the available statutory remedy rather than simply selecting ITR-U.
A notice or reassessment is pending
You receive a notice while considering an updated return. Stop and map the notice to the relevant proceeding and statutory provision. The ITR-U notice includes information-related and proceeding-related exclusions, and a section 148 notice may invoke a different additional-tax band. Filing first and checking eligibility later can create a defective or ineffective return.
Independent reader supportYour contribution helps us test, update, and keep practical guides available for everyone.Filing preparation checklist
- Original return, acknowledgement number and verification status.
- Assessment year and the deadline applicable to that year.
- Form 16, interest certificates, capital-gains statements, rent or business records and tax-deduction certificates relevant to the correction.
- A line-by-line reconciliation showing what was reported originally and what changes.
- Recomputed total income, tax, interest, fee, refund or loss, with the effect clearly identified.
- Copies of every department notice, assessment order, reassessment communication or search/survey document.
- Evidence of any tax payment and the final submission acknowledgement.
Use the department’s current return utility and instructions for the assessment year. Forms and validation rules can change, especially during the transition between the 1961 Act and the new Act. Keep the filed JSON or XML data, downloaded acknowledgement and working papers in one folder so that the correction can be explained later.
Common mistakes to avoid
Treating ITR-U as a late revised return
ITR-U has a different purpose and eligibility test. A portal option does not remove the restrictions on losses, lower liability or refunds.
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A 2024 department notice reproduces older section 139(8A) wording that referred to a 24-month period. The current 2026 CBDT notification describes the Form ITR-U window as 48 months. Use the later notified form and current law for the applicable filing date instead of repeating the older period as the present rule.
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Quoting one universal additional-tax rate
The ordinary bands are 25%, 50%, 60% and 70% by filing period. The specified section 148 context has 35%, 60%, 70% and 80% bands. The percentage and liability base must be calculated for the exact facts.
Ignoring the original return’s status
An unverified return, a completed assessment, a notice or a prior ITR-U can change the analysis. Confirm status before preparing a replacement or update.
Changing only the tax payable field
The department expects the schedules and income figures to support the final computation. Correct the source entry and every consequential schedule, not just the summary amount.
When to obtain professional help
Consider a qualified Indian tax professional when the correction involves business or professional income, multiple years, carried-forward losses, foreign income, capital gains, a notice, search or survey, assessment or reassessment, or uncertainty about whether the correction lowers tax or increases a refund. Give the adviser the assessment year, original return and acknowledgement, proposed correction, tax calculation and complete notice history. Professional review cannot guarantee acceptance or remove statutory additional tax, but it can prevent choosing an unavailable filing route.
Bottom line
File a revised return when the applicable section 139(5) window is open and you are correcting an already filed return. Consider ITR-U only after that window has closed or another permitted circumstance applies, and only if the update passes the loss, tax-reduction, refund, proceeding and prior-filing restrictions. For the current Form ITR-U, the window is described as 48 months from the end of the assessment year, with additional-tax bands of 25% to 70% and a separate 35% to 80% schedule for the specified section 148 response context. Verify the assessment-year rule and final legislation before submitting.
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