ITR-U lets you file an updated return up to 48 months from the end of the assessment year with graded additional tax. Eligibility, computation and FY 2026-27 strategy.
Analysis of ITR-U Return
ITR-U — the Updated Return under Section 139(8A) of the Income-tax Act, 1961 — lets any taxpayer voluntarily correct missed income, under-reported figures, or income placed under the wrong head in an earlier return. Following the Finance Act, 2025 amendment, the filing window now extends to 48 months from the end of the relevant Assessment Year, covering four financial years at once. As of May 2026, returns for AY 2022-23 through AY 2025-26 are potentially open. You pay a graded additional tax ranging from 25% to 70% of net tax and interest — and in exchange you significantly reduce the risk of a Section 148 reassessment notice, penalties under Section 270A, and the protracted litigation that follows.
What ITR-U Is — and Why It Matters More Than Ever in 2026
Before ITR-U, a taxpayer who discovered an omission after the revised return deadline had almost no clean statutory exit. The only options were to wait and hope the department never noticed, or to approach the Assessing Officer (AO) informally — a process with no legal certainty and a high dependence on goodwill.
ITR-U changes this equation. It is a statutory mechanism that gives you a defined additional tax cost (predictable, set by formula), creates a formal disclosure record that operates as evidence of good faith, and works for both filers and non-filers — you do not need to have filed an original return to use ITR-U.
The urgency has grown sharply because the Income Tax Department now cross-references your Annual Information Statement (AIS) and Taxpayer Information Summary (TIS) against every ITR filed. The AIS aggregates data from over 70 sources — banks, mutual fund houses, registrars, employers, the GSTN (Goods and Services Tax Network), SEBI-registered intermediaries, and Authorised Dealers for foreign remittances. If your AIS shows income that your ITR does not, the department's AI-driven compliance engine flags the mismatch automatically. ITR-U is your pre-emptive answer before that flag becomes a formal notice.
Eligibility: Who Can File, and Who Cannot
Who CAN file
Any resident or non-resident individual, HUF (Hindu Undivided Family), firm, LLP (Limited Liability Partnership), AOP (Association of Persons), BOI (Body of Individuals), or company can file an updated return, whether or not they filed an original, belated, or revised return for the relevant year. The one non-negotiable condition: ITR-U must result in an additional tax liability. It cannot be filed merely to make corrections that are tax-neutral or tax-reducing.
Who CANNOT file
The law — Section 139(8A) proviso and Rules 12AC — bars ITR-U in the following situations:
- Search, survey, or requisition cases: A search under Section 132, requisition under Section 132A, or survey under Section 133A relating to the taxpayer, and the year in question is covered by that action.
- Assessment or reassessment in progress or completed: If the AO has initiated or completed assessment, reassessment, revision, or re-computation proceedings for that year, the ITR-U window closes.
- Information from tax treaties pending action: Where the department has received information under Section 90 or 90A (Double Taxation Avoidance Agreements — DTAAs) relating to the taxpayer, and that information is under active examination.
- Prosecution proceedings initiated: If prosecution for the relevant AY has commenced under Chapter XXII of the Act.
- Result would be refund or reduction in tax: ITR-U cannot claim a higher refund, increase a loss carried forward, or reduce the tax already declared in any prior filing.
Practical first step: Before computing your ITR-U, go to the Pending Actions tab on the income-tax portal. If a notice under Section 143(2), 142(1), or 148 is showing for the target year, ITR-U is already barred for that year by statute. Paying the additional tax and filing anyway will result in rejection — and you will have tipped off the department about the income.
The 48-Month Window and Graded Additional Tax — Finance Act, 2025
The extended timeline
The original Section 139(8A), introduced by Finance Act, 2022, allowed updated returns within 24 months from the end of the relevant Assessment Year. Finance Act, 2025 doubled this to 48 months and added two new tax slabs for the longer delay periods. This is a significant legislative shift — it effectively gives taxpayers four opportunities per omission instead of two.
Additional tax rate table
| Period elapsed from end of relevant AY | Additional Tax Rate |
|---|---|
| Up to 12 months | 25% of (tax + interest − taxes already paid) |
| 13 to 24 months | 50% of (tax + interest − taxes already paid) |
| 25 to 36 months | 60% of (tax + interest − taxes already paid) |
| 37 to 48 months | 70% of (tax + interest − taxes already paid) |
The additional tax is computed on the Net Base Amount (NBA) — that is, tax on the additional income plus applicable interest, reduced by taxes already paid (TDS, TCS, advance tax, self-assessment tax). The additional tax is on top of the NBA; it is not a substitute for it.
Last-chance alert for AY 2022-23
As of May 2026, AY 2022-23 is approximately 38 months past its end date (31 March 2023). You are in the 37–48 month bracket at 70% additional tax, and the 48-month window closes 31 March 2027 — fewer than eleven months away. If you have any omissions for FY 2021-22, this is the most time-sensitive year on the ITR-U calendar.
> Important caveat: The original 24-month window for AY 2022-23 expired on 31 March 2025. Whether the Finance Act, 2025 extension revives the ITR-U window for that year depends on the effective date of the amendment as notified by the Central Government. Verify this against the relevant Finance Act, 2025 provisions and any departmental circular before relying on ITR-U for AY 2022-23.
How to Compute Your ITR-U Liability: A Precise Walk-Through
Do this computation on paper or in a spreadsheet before opening the portal. The portal auto-computes some figures, but verifying independently protects you from system errors.
Step 1 — Identify the additional income List every item missed or mis-classified. Common sources: FD and savings account interest per bank passbook, capital gains on mutual funds per CAMS or KFintech statement, freelance income in a secondary account, rental income, deemed dividend under Section 2(22)(e), ESOP perquisite.
Step 2 — Recompute total income and tax Add the additional items to the income already reported. Apply the regime you used originally (old or new — you cannot switch regime in ITR-U). Compute tax on revised total income, less any basic exemption and deductions, plus surcharge (if applicable) and Health & Education Cess at 4%.
Step 3 — Compute interest
- Section 234A: 1% per month if the original return was itself filed late (on the unpaid tax).
- Section 234B: 1% per month from 1 April of the Assessment Year to the month of filing ITR-U, on the shortfall in advance tax.
- Section 234C: 1% per month for deficient installment-wise advance tax payments (applies at specific installment dates: 15 June, 15 September, 15 December, 15 March).
- Section 234F: Late-filing fee — Rs. 5,000 if total income exceeds Rs. 5,00,000; Rs. 1,000 if not. Applicable only if the original return was filed late (not relevant to the ITR-U computation itself, but confirm if the original filing was delayed).
Step 4 — Subtract taxes already paid Deduct TDS (from Form 26AS / AIS), TCS, advance tax paid, and any self-assessment tax already deposited for that year.
Step 5 — Net Base Amount (NBA) NBA = (Tax on additional income + Interest) − Taxes already paid
Step 6 — Apply the additional tax rate Additional Tax = NBA × applicable rate (25% / 50% / 60% / 70%)
Step 7 — Total challan payment Total = NBA + Additional Tax
Pay via Challan ITNS 280, Major Head 0021 (for individuals and non-corporate taxpayers) or 0020 (companies), selecting the appropriate minor head as indicated by the portal. Collect the BSR code and Challan Serial Number — you will need these when filling in the ITR-U form.
Worked Example: Rahul's Missed FD Interest — AY 2024-25
Facts: Rahul is a salaried professional with total income above Rs. 15,00,000, taxed at 30% under the old regime. His bank credited FD interest of Rs. 5,00,000 during FY 2023-24 (AY 2024-25). He filed his original return on time in July 2024 but forgot to include this interest. His bank deducted TDS at 10% — Rs. 50,000 — which appears in his AIS. He wants to file ITR-U in May 2026, which is 14 months from the end of AY 2024-25 (31 March 2025), placing him in the 13–24 months bracket: 50% additional tax.
| Computation Item | Amount (Rs.) |
|---|---|
| Additional income (FD interest) | 5,00,000 |
| Income tax @30% on Rs. 5,00,000 | 1,50,000 |
| Health & Education Cess @4% on Rs. 1,50,000 | 6,000 |
| Gross tax on additional income | 1,56,000 |
| Interest u/s 234B (1% × Rs. 1,56,000 × 26 months) | 40,560 |
| Sub-total: tax + interest | 1,96,560 |
| Less: TDS deducted by bank | (50,000) |
| Net Base Amount (NBA) | 1,46,560 |
| Additional tax @50% on NBA | 73,280 |
| Total challan payment | 2,19,840 |
What if Rahul waits for a Section 148 notice instead?
Assume the department issues a notice in early 2029 — roughly five years after the income was earned. The 234B interest now runs for approximately 60 months instead of 26:
- 234B interest: Rs. 1,56,000 × 1% × 60 = Rs. 93,600 (vs. Rs. 40,560 under ITR-U now)
- Penalty u/s 270A for under-reporting: 50% of tax = Rs. 78,000 (this is in addition to the interest; it is not the same as the ITR-U additional tax)
- Professional fees (CA/advocate for representation): Rs. 50,000 to Rs. 2,00,000+
- Potential misreporting penalty (if the department characterises the omission as deliberate): 200% of tax = Rs. 3,12,000
ITR-U total outflow: Rs. 2,19,840. Contested reassessment potential outflow: Rs. 3,50,000 to Rs. 5,50,000+ — before accounting for management time, multiple hearings, and reputational exposure. The arithmetic is rarely ambiguous.
Which Assessment Years Are Open Right Now (May 2026)?
| AY | Income Year (FY) | End of AY | Months Elapsed | Additional Tax Slab | 48-Month Deadline |
|---|---|---|---|---|---|
| AY 2022-23 | FY 2021-22 | 31 Mar 2023 | ~38 months | 70% | 31 Mar 2027 ⚠️ |
| AY 2023-24 | FY 2022-23 | 31 Mar 2024 | ~26 months | 60% | 31 Mar 2028 |
| AY 2024-25 | FY 2023-24 | 31 Mar 2025 | ~14 months | 50% | 31 Mar 2029 |
| AY 2025-26 | FY 2024-25 | 31 Mar 2026 | ~2 months | 25% | 31 Mar 2030 |
AY 2026-27 (FY 2025-26) is not yet open for ITR-U: the original return due date of 31 July 2026 has not yet passed, and the revised return window remains available until 31 December 2026. If you need to correct FY 2025-26, use the revised return route now — it costs no additional tax.
Strategic Use: AIS, TIS, and Beating Section 148 to the Punch
Use AIS and TIS as your pre-filing audit
Pull your AIS and TIS for every open year from the income-tax portal (login → Services → Annual Information Statement). The AIS captures:
- Bank interest and dividends (reported under Section 285BA)
- Capital gains on mutual funds, listed shares, real estate
- GST-registered turnover (cross-referenced from GSTN)
- Foreign remittances (Form 15CA/CB filings by banks)
- Purchase and sale of immovable property above Rs. 30,00,000 (SFT — Specified Financial Transactions)
- Cryptocurrency transaction proceeds (reported by exchanges registered in India)
Compare every AIS line item against the relevant ITR. For each mismatch, you have three options:
- Submit AIS feedback — if the information is factually wrong (e.g., a property sale is attributed to you but belongs to a co-owner, or a dividend was reinvested and not a cash receipt). Document your feedback and retain evidence. The AIS portal allows you to mark items as "incorrect," "partially correct," or "not relating to me."
- File ITR-U — if the income is genuine but was omitted.
- Do nothing — and wait for a notice. When the income is genuine and appears in AIS, this is almost never the correct strategy.
The Section 148 trigger mechanism
Section 148 allows reopening of assessments within 3 years from the end of the relevant AY if escaped income is up to Rs. 50,00,000, and within 10 years if it exceeds Rs. 50,00,000 (subject to the conditions laid down after the Supreme Court's ruling in Union of India v. Ashish Agarwal [2022] and the amendments that followed). A reopened assessment means:
- Full scrutiny of the year's return — not just the flagged item
- Penalty under Section 270A (50% for under-reporting; 200% for misreporting with concealment)
- Prosecution risk under Section 276C for wilful evasion
- Interest running longer (more months = more 234B cost)
ITR-U's protective value: While the statute does not offer an explicit immunity from penalty post-ITR-U, the voluntary disclosure creates a strong mitigating record. The penalty authority considers: Was there voluntary disclosure before detection? Does the taxpayer have a prior history of evasion? Was there concealment or merely an oversight? Filing ITR-U — backed by an AIS that shows the income was visible to you — is your evidence of good faith.
Step-by-Step: Filing ITR-U on the Income-Tax Portal
- Log in to unknown node using your PAN credentials.
- Navigate to e-File → Income Tax Returns → File Income Tax Return.
- Select the relevant Assessment Year and choose Updated Return (ITR-U) as the filing type.
- Select the applicable ITR form: ITR-1 (salaried, one house property, interest income only), ITR-2 (capital gains, multiple properties, foreign income), ITR-3 (business/profession income), ITR-4 (presumptive taxation), ITR-5 (partnership firms, LLPs, AOPs), ITR-6 (companies), ITR-7 (trusts and exempt entities). Do not use ITR-1 if the omitted income includes capital gains — that will render the return defective.
- Select your reason for updating from the statutory dropdown:
- Income not reported correctly
- Wrong head of income chosen
- Reduction of carried-forward loss (to increase current year income)
- Reduction of unabsorbed depreciation
- Reduction of tax credit under Section 115JB / 115JC
- Wrong rate of tax applied
- Disclose the additional income in the appropriate schedule. The portal pre-fills data from the original/revised return; you add the omitted item on top.
- Verify the auto-computed additional tax against your offline calculation. Discrepancies here are common when interest periods straddle financial years.
- Pay the challan (ITNS 280) for the total amount — NBA plus additional tax. Pay before submitting the return. The return cannot be accepted without a settled challan.
- Enter the BSR code and Challan Serial Number in the form and submit.
- Verify within 30 days via net-banking EVC, Aadhaar OTP, or TOTP. Alternatively, post a signed ITR-V to CPC, Bengaluru. An unverified ITR-U is treated as never filed — and does not protect you from a Section 148 notice.
Common Mistakes and Pitfalls to Avoid
Filing when a notice is already pending. This is the single most costly error. Check the Pending Actions tab first. If Section 143(2) or 148 is visible for the year, ITR-U is barred — filing it telegraphs the omission without providing protection.
Using ITR-U to reduce tax or claim refund. If you realised you over-declared income or missed a TDS credit, ITR-U is the wrong vehicle. Use rectification under Section 154 or pursue the matter in a pending appeal.
Skipping the AIS feedback step. If the AIS shows a figure different from what you are disclosing, the portal may flag an inconsistency. Correct genuinely erroneous AIS entries first, then disclose the remaining genuine omissions via ITR-U.
Paying the challan after submitting the form. The return is not valid without the settled payment. Always generate and pay the challan — and wait for it to appear in Form 26AS or AIS (typically within 24–48 hours) — before initiating the ITR-U submission.
Miscounting the delay period. The 12/24/36/48-month buckets run from the end of the Assessment Year, not from the original return due date or the date you filed the original return. For AY 2024-25, the clock starts 31 March 2025, not 31 July 2024. Getting the bucket wrong by even a few days can change your additional tax rate by 10 percentage points.
Wrong ITR form. Choosing ITR-1 when the additional income includes equity mutual fund gains (which require ITR-2) renders the return defective and triggers a defective return notice under Section 139(9) — defeating the purpose.
Not retaining documentation. After filing, save: the acknowledgement PDF, the challan receipt, and a printout of your AIS/TIS for the year. If the matter is scrutinised later, these documents form your first line of defence.
Key Takeaways
- Four assessment years are open as of May 2026: AY 2022-23 (70% additional tax, deadline 31 March 2027), AY 2023-24 (60%), AY 2024-25 (50%), and AY 2025-26 (25%). AY 2022-23 is the most urgent — the window closes in under eleven months.
- The Finance Act, 2025 extension to 48 months is a meaningful reform, but the later slabs (60%–70%) carry a significant cost premium — the sooner you disclose, the cheaper it is.
- Cross-check your AIS/TIS for every open year before deciding whether to file. Every line item in AIS that does not appear in your ITR is a potential Section 148 trigger.
- The computation sequence is: tax on additional income → add cess → add 234B/C/A interest → subtract taxes already paid → arrive at NBA → multiply by the applicable rate to get additional tax.
- ITR-U is barred once a formal notice has been issued for the relevant year. The window to act proactively is before the department acts, not after.
- Voluntary disclosure is structurally cheaper than a contested reassessment — not just in direct tax cost, but in 234B interest running longer, Section 270A penalty exposure, professional fees, and the management bandwidth consumed by years of litigation.
- Verify the return within 30 days of filing. An unverified ITR-U provides zero legal protection and zero evidentiary value — it is treated as never having been filed.





