You have already filed your income tax return. Then, while checking Form 26AS, AIS or your bank statement, you spot something you missed: FD interest, a capital gain, a TDS credit, or a deduction entered incorrectly. Do you have to wait for an income tax notice? No. If you are eligible and still within the revision window, you can correct the return yourself.
For AY 2026–27 (income earned during FY 2025–26), a revised return under Section 139(5) of the Income-tax Act, 1961 can generally be furnished until 31 March 2027 or before completion of the assessment, whichever is earlier. A new Section 234-I fee applies to revised returns filed from 1 January 2027 through the extended window. This is not the same as the fee for filing an original return late.
AY 2026–27 is not Tax Year 2026–27. AY 2026–27 covers FY 2025–26 and continues under the Income-tax Act, 1961. Tax Year 2026–27, which begins 1 April 2026, is governed by the new Income-tax Act, 2025. Select the year shown on your original acknowledgement, not the year in which you discover the mistake. Income Tax Department's transition FAQ Official ↗.
Revised ITR last date for AY 2026–27: deadline and fees
The Finance Act, 2026 extended the revised-return filing window through the end of the assessment year. The law also introduced an additional fee for using the January–March extension.
| Date you file the revised ITR | Additional revision fee under Section 234-I |
|---|---|
| On or before 31 December 2026 | Nil |
| 1 January–31 March 2027, revised total income up to ₹5 lakh | ₹1,000 |
| 1 January–31 March 2027, revised total income above ₹5 lakh | ₹5,000 |
The deadline is earlier if your assessment is completed. Tax, interest or other statutory charges can be payable irrespective of the revised-return fee. The ₹5-lakh threshold uses the total income in the revised return, not merely the amount of income you are adding.
Example: You filed an original return in August 2026 showing total income of ₹7,80,000. In February 2027, you correct a ₹5,000 TDS-credit entry while the assessment is still open. The January–March revised-return fee would be ₹5,000 even though the correction is only ₹5,000. Filing the same revision in November 2026 would not attract the additional revision fee.
Do not confuse Section 234-I (late revision, applicable during the extended window) with Section 234F (late filing of the original/belated return). If the original return itself was belated, its applicable fee remains a separate issue.
Official sources: Income Tax Department ITR-1 AY 2026–27 FAQs Official ↗, ITR-2 filing FAQs Official ↗, and Interest and Fees Official ↗.
When should you file a revised income tax return?
A revised return is designed for mistakes or omissions in a return that has already been filed under the applicable provisions. Some situations are straightforward; others affect your tax computation or eligibility for a particular ITR form.
1. You forgot to report some income
Bank savings interest, fixed-deposit interest, rental receipts, taxable freelance income and capital gains should be reviewed alongside the information already reported in AIS and Form 26AS. If a taxable receipt was omitted, correct the appropriate income schedule and recompute the liability. Do not assume that an item is taxable merely because it appears in AIS—first verify its nature and year.
2. You claimed an incorrect deduction or exemption
Perhaps an 80C investment was entered twice, a health-insurance premium was overstated, or a house-rent claim was made without meeting its conditions. Correct the amount and supporting schedules. Claims depend on the chosen tax regime and the applicable rules for FY 2025–26.
3. You missed TDS, TCS or a tax challan
Check salary Form 16, Form 16A, Form 26AS, AIS and advance/self-assessment tax receipts. A credit may be missing because it was omitted from the return, or because the deductor has not reported it correctly. These situations require different actions—an updated return entry cannot manufacture a tax credit that is not supported by the relevant records.
4. You selected an ineligible ITR form
A return originally filed in ITR-1 may need ITR-2 or ITR-3 if the actual income category does not meet ITR-1 eligibility. Choose the correct form and provide all applicable disclosures. Do not assume every income type or taxpayer can use the same form.
5. You entered incorrect personal, bank or reporting details
Incorrect bank information, a missed foreign-asset schedule, or incorrect other particulars may need correction. For bank changes alone, the portal's profile and refund services may also be relevant; use a revised return where correction to filed return data is needed.
The key rule: A revised return is a complete replacement of the earlier return, not a one-line correction. The amounts that were already correct must also be carried forward and reviewed.
Before revising: gather these records
- Your original ITR acknowledgement number and original filing date.
- A downloaded copy of the submitted return and computation.
- Form 16/16A, Form 26AS and AIS, with notes on any genuine differences.
- Salary, interest, business, rental or capital-gains workings relevant to the correction.
- Deduction proofs, tax payment challans and any earlier ITR-V/e-verification acknowledgement.
- Bank details and the correct filing status and tax-regime selection.
If the existing return still shows Pending for verification, check the e-verification position first. The Income Tax Department also offers a Discard Return option for eligible unverified returns, but discarding an on-time original and refiling after the due date can create belated-return consequences. Official Discard Return FAQ Official ↗.
How to file a revised income tax return online: step by step
You can revise through the official Income Tax e-Filing portal Official ↗. Screen labels can vary by ITR form and portal updates, so follow the prompts for the selected assessment year.
File the corrected return
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Check original return
Log in, go to e-File → Income Tax Returns → View Filed Returns, and note the original acknowledgement number and date.
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Choose the correct assessment year
Open e-File → Income Tax Returns → File Income Tax Return and select AY 2026–27, not Tax Year 2026–27.
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Select filing section
Choose Revised Return under Section 139(5) and provide the original filing details when prompted.
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Review all schedules
Select the appropriate ITR form, bring forward correct income and deductions, update omitted figures, and reconcile tax paid.
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Compute and pay dues
Review tax, interest and any Section 234-I fee. Pay the applicable outstanding amount and enter challan particulars if required.
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Submit and verify
Validate, submit and e-verify the new return within the prescribed verification period. Download both the acknowledgement and verification confirmation.
Step 1: Find the earlier return details
Do not guess the acknowledgement number. Open View Filed Returns and save a copy of the return filed for AY 2026–27. If you submitted more than one return, review the sequence and use the appropriate valid filing details requested by the portal.
Step 2: Select AY 2026–27 and Section 139(5)
Select the same assessment year as the return being corrected. Choose Revised, not Original, Belated or Updated (ITR-U). The form asks for the earlier acknowledgement number and date to establish the link between filings.
Step 3: Complete the whole return again
Check salary, house property, business or professional income, capital gains, other sources, exemptions, deductions, tax paid, bank details and additional disclosure schedules as applicable. Reconcile all totals rather than adjusting only the erroneous line.
Step 4: Calculate tax, interest and revision fee
If taxable income increases, additional tax and interest may arise. If you revise from January through March 2027, assess Section 234-I separately even when the revision does not increase income. A revision that lowers your tax can be legitimate if the underlying claim is lawful and the return remains eligible for revision.
Step 5: Submit and e-verify the revised ITR
After submission, complete e-verification within the applicable 30-day period or use the permitted signed ITR-V process. An uploaded but unverified return should not be treated as a finished correction. See TaxQue's ITR e-verification guide and the Income Tax Department e-Verify manual Official ↗.
Step 6: Check the status
Return to View Filed Returns to confirm the revised acknowledgement and e-verification status. Download the filed JSON/PDF and keep the payment receipt with your year-wise records. If a refund or demand changes later, compare the final processing intimation with the revised return, not only with the original return.
Practical example: missed fixed-deposit interest
Rohan earned gross salary of ₹14,00,000 during FY 2025–26 and filed a return under the new regime. His salary after the illustrative ₹75,000 standard deduction was ₹13,25,000. Later he discovered ₹40,000 of taxable bank FD interest omitted from the return.
| Description | Original return | Revised return |
|---|---|---|
Gross salary | ₹14,00,000 | ₹14,00,000 |
Less: standard deduction | ₹75,000 | ₹75,000 |
Taxable salary | ₹13,25,000 | ₹13,25,000 |
FD interest | Nil | ₹40,000 |
Total taxable income | ₹13,25,000 | ₹13,65,000 |
Extra basic slab tax | — | ₹6,000 |
Extra cess at 4% | — | ₹240 |
Illustrative additional tax: ₹6,240, before assessing any applicable interest or outstanding credits. Both income figures fall in the 15% marginal slab under the relevant new-regime schedule for AY 2026–27; hence ₹40,000 × 15% = ₹6,000. The illustration assumes no other income, adjustments or special-rate items.
If Rohan revises in November 2026, no Section 234-I revision fee is due. If he waits until February 2027, the additional ₹5,000 revision fee may apply because his revised total income exceeds ₹5 lakh—separately from the additional tax and any interest.
Correcting income voluntarily does not automatically guarantee that a notice will never be issued. It puts accurate information on record and can help resolve discrepancies, but assessment and verification processes remain governed by law.
Revised return vs belated return vs rectification vs ITR-U
These are different procedures, and choosing the wrong one can delay a legitimate correction.
| Procedure | Main use | AY 2026–27 point to remember |
|---|---|---|
Revised ITR — Section 139(5) | Correct mistakes in an eligible already-filed return | By 31 March 2027 or earlier completed assessment; Section 234-I fee in Jan–Mar |
Belated ITR — Section 139(4) | File when you missed the original due date | Generally up to 31 December 2026 or before assessment completion, with applicable Section 234F fee |
Rectification — Section 154 | Correct a mistake apparent from record in an eligible processed intimation/order | Not a substitute for adding unreported income or claiming a fresh deduction |
Updated ITR — Section 139(8A) | Report eligible omitted income after normal filing options close | Subject to 48-month outer window, additional tax and restrictions; not for increasing refund or reducing tax |
The Income Tax Department's rectification FAQ Official ↗ expressly distinguishes correcting a submitted return through revision from correcting apparent errors in an intimation. Rectification can cover certain mistakes in return processing or the taxpayer's previously reported data, but it is not only for errors made by the department.
What if the return has already been processed?
“Processed under Section 143(1)” and “completion of an assessment” should not be treated as interchangeable in every circumstance. Check the actual notices, orders and the portal's eligibility before deciding that revision is blocked. If you receive a demand or a notice, deal with its specific response deadline separately from your revision plan.
Can a belated return be revised?
Yes, a return validly furnished under Section 139(4) may also be revised within the applicable Section 139(5) time limit. But the original belated-return fee, if applicable, does not vanish when you revise it.
What happens after the revised return deadline?
For qualifying omitted income, an updated return (ITR-U) may be available within the statutory 48-month period, with additional tax and other restrictions. It cannot generally be used to increase a refund, reduce tax or create/increase a loss. See the Income Tax Department's ITR-U explanation Official ↗.
Can you change the old/new tax regime through a revised return?
Be careful. A revised return does not reset the statutory deadline for opting out of the default new regime.
- Without business or professional income: Choosing the old regime requires an eligible return filed within the Section 139(1) deadline. Do not assume you may freely move from a new-regime original to the old regime in a later revision.
- With business or professional income: The prescribed Form 10-IEA election and its due date matter, as do the restrictions on switching back. You cannot cure a missed timely election merely by choosing another regime on the revised-return screen.
- A wrongly recorded regime: Review the original filing date, valid election and portal rules. A corrected return may be appropriate where it reflects an election already validly made.
Sources: New vs Old Tax Regime FAQs Official ↗ and Form 10-IEA manual Official ↗.
Common mistakes to avoid
Using AY 2027–28 instead of AY 2026–27. The relevant year is determined by when the income was earned; for FY 2025–26, use AY 2026–27.
Thinking the fee depends on the correction amount. From January to March 2027, Section 234-I looks at total income in the revised return, not the value of the missed item.
Assuming revised returns are always free. That is no longer true for the extended January–March 2027 window.
Leaving out unchanged schedules. The revised ITR is a full return and should reproduce correct entries as well as amendments.
Ignoring information-reporting differences. AIS is an important cross-check, but a reported item may need clarification, correction or reconciliation rather than automatic duplication into taxable income.
Filing an original return a second time. Use the proper revised-return filing section and earlier acknowledgement details.
Not e-verifying. Submission alone is not enough; keep the completed verification acknowledgement.
Treating an ITR-U as a refund correction tool. Updated returns have narrower eligibility and different additional-tax consequences.
Quick checklist before you submit
- ○ Confirmed AY 2026–27 and the earlier valid ITR details.
- ○ Matched income figures against salary records, bank statements and AIS/26AS.
- ○ Reviewed the tax regime, deductions and form eligibility.
- ○ Re-entered all relevant schedules, not only the changed item.
- ○ Computed any extra tax, interest and Section 234-I fee.
- ○ Validated the return and completed e-verification.
- ○ Downloaded the revised acknowledgement and payment receipts.
Should you correct a small mistake?
If a detail affects tax, refund, disclosure, ITR-form eligibility or another material fact, check it rather than ignoring it because the amount looks small. A simple typographical issue that can be changed directly in the profile may not require the same filing response as omitted taxable income. The best remedy follows the nature of the error and stage of your return.
TaxQue can help review your original return against Form 26AS, AIS and supporting records, prepare the correct filing and check verification status. You can explore Income Tax Return Filing Services, review documents required for ITR, or compare calculations with the income tax calculator.
Official sources and further reading
- Income Tax Department — ITR-1 FAQs for AY 2026–27 Official ↗ — revised-return deadline and Section 234-I.
- Income Tax Department — ITR-2 Online FAQs Official ↗ — fee thresholds and AY applicability.
- Income Tax Department — Income Tax Returns Transition FAQ Official ↗ — 1961 Act versus 2025 Act.
- Income Tax Department — Interest and Fees Official ↗ — Sections 234F and 234-I.
- Income Tax Department — Rectification FAQs Official ↗ — rectification compared with revision.
- Income Tax Department — e-Verify User Manual Official ↗ — verifying submitted returns.
- Income Tax Department — Form 10-IEA Manual Official ↗ — old/new regime election with business income.
- Income Tax Department — Updated Return Guidance Official ↗ — ITR-U eligibility and limits.
Updated: 19 October 2026. This article is general tax information. Individual cases depend on return status, assessment proceedings, the chosen regime and the instructions applicable on the filing date.
