ITR-U Now Has a 48-Month Window: How to Fix Old Tax Returns in 2026
The Finance Act, 2025 doubled the Updated Return (ITR-U) window from 24 to 48 months from 1 April 2025. You get more time to correct old returns — but the additional tax rises from 25% to 70% the longer you wait. Here is how Section 139(8A) works now.
- The ITR-U window doubled from 24 to 48 months from the end of the assessment year, effective 1 April 2025.
- Additional tax climbs the longer you delay: 25% within 12 months, 50% at 24, 60% at 36, 70% at 48 — on tax plus interest.
- ITR-U is one-directional — it cannot be used to claim a refund, declare a loss, or reduce your tax.
- About 90 lakh updated returns have been filed since 2022, bringing in roughly ₹9,118 crore of additional tax.
If you missed income on an old return — a side consultancy invoice, interest you forgot, a cash sale that never got booked — you now have far longer to fix it before the department fixes it for you. From 1 April 2025, the Finance Act, 2025 doubled the window to file an Updated Return (ITR-U) under Section 139(8A) from 24 months to 48 months (four years) from the end of the relevant assessment year (ClearTax, 2025). More time, but not free time: the longer you wait, the higher the extra tax.
What changed in 2025?
Before April 2025, an ITR-U could be filed within 24 months from the end of the assessment year. The Finance Act, 2025 extended this to 48 months (IndiaFilings, 2025). In practical terms, during FY 2025-26 you can file an updated return for assessment years as far back as AY 2021-22, right up to AY 2025-26. For the year just closed — FY 2024-25 (AY 2025-26) — your ITR-U window runs from 1 April 2026 to 31 March 2030.
How much extra tax will I pay?
The cost of an updated return is an additional tax on top of the tax and interest otherwise due, and it rises in steps the longer you wait (ClearTax, 2025). This is the heart of the rule: ITR-U rewards early correction and penalises delay. File within the first year and you pay 25% extra; drag it to the fourth year and you pay 70%.
What can I not do with an ITR-U?
An updated return only moves in one direction: it lets you declare additional income and pay more tax. You cannot use ITR-U to claim or increase a refund, to file a nil or loss return, or to reduce your total tax liability (ClearTax, 2025). It is a voluntary disclosure tool, not a do-over for tax planning. If your correction would lower your tax or create a refund, ITR-U is not the route.
When am I barred from filing it?
You cannot file an ITR-U if a search under Section 132, a survey under Section 133A, or assessment/reassessment proceedings have been initiated or completed for that year (TaxGuru, 2025). The window also interacts with reassessment notices under Section 148A. The principle is simple: ITR-U is for voluntary correction before the department comes knocking — once enforcement starts, the option closes.
Is anyone actually using it?
Yes, in large numbers. Across roughly four years since the scheme launched in 2022, about 90 lakh updated returns have been filed, generating around ₹9,118 crore in additional tax, per figures placed before Parliament (Business Standard, 2025). In the current fiscal alone, more than 21 lakh taxpayers filed updated returns paying about ₹2,500 crore, many after CBDT "NUDGE" outreach (Outlook Money, 2025). The message: the department increasingly knows what you left out, and prefers you fix it yourself.
Does ITR-U survive the new Income-tax Act, 2025?
Yes. The updated-return mechanism carries forward into the new Income-tax Act, 2025 — re-mapped to Section 263(6) with the same 48-month window — effective 1 April 2026 (ClearTax, 2026). For income earned in FY 2025-26 and earlier, the familiar Section 139(8A) still governs, so nothing about your AY 2026-27 correction changes in substance.
Frequently Asked Questions
How far back can I file an ITR-U in 2026?
During FY 2025-26 you can file an updated return for assessment years from AY 2021-22 through AY 2025-26 — the 48-month window introduced from 1 April 2025. For FY 2024-25 income (AY 2025-26), the ITR-U window runs from 1 April 2026 to 31 March 2030.
What is the penalty for filing an updated return?
It is an additional tax under Section 140B, not a fixed penalty. You pay 25% extra on the tax and interest if you file within 12 months of the assessment year end, rising to 50% within 24 months, 60% within 36 months, and 70% within 48 months. Filing early is materially cheaper.
Can I get a refund through ITR-U?
No. An ITR-U cannot be used to claim a refund, increase an existing refund, declare a loss, or reduce your tax liability. It only allows you to disclose additional income and pay more tax. If your situation would reduce tax, ITR-U is not the right form.
Can I file ITR-U if I never filed an original return?
Yes. You can file an updated return even if you missed the original, belated, and revised return deadlines entirely. You still pay the applicable additional tax under Section 140B, plus any interest and late-filing fee that would otherwise apply for that year.
What should you do next?
Pull your AIS and Form 26AS for the last four assessment years and compare them against what you actually reported. If you spot income you missed — interest, freelance receipts, capital gains, cash sales — file the ITR-U sooner rather than later to stay in the cheaper 25% or 50% band. For help reconciling and filing, see Bizeract business ITR filing and our guide to the best way to file taxes in India.
What to verify before acting on ITR-U Now Has a 48-Month Window
Rules and platform behaviour change after an article is published. Confirm forms, due dates, AIS or Form 26AS data, regime rules, and filing instructions against the Income Tax Portal before you act on anything below, because the right answer depends on your entity, state, turnover, and current setup.
Going deeper: Business ITR Filing, ITR Filing (Salaried), and Income Tax Notice Handling.
Frequently asked questions
How far back can I file an ITR-U in 2026?
During FY 2025-26 you can file an updated return for assessment years from AY 2021-22 through AY 2025-26 — the 48-month window introduced from 1 April 2025. For FY 2024-25 income (AY 2025-26), the ITR-U window runs from 1 April 2026 to 31 March 2030.
What is the penalty for filing an updated return?
It is an additional tax under Section 140B, not a fixed penalty. You pay 25% extra on the tax and interest if you file within 12 months of the assessment year end, rising to 50% within 24 months, 60% within 36 months, and 70% within 48 months. Filing early is materially cheaper.
Can I get a refund through ITR-U?
No. An ITR-U cannot be used to claim a refund, increase an existing refund, declare a loss, or reduce your tax liability. It only allows you to disclose additional income and pay more tax. If your situation would reduce tax, ITR-U is not the right form.
Can I file ITR-U if I never filed an original return?
Yes. You can file an updated return even if you missed the original, belated, and revised return deadlines entirely. You still pay the applicable additional tax under Section 140B, plus any interest and late-filing fee that would otherwise apply for that year.
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