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Published on 10 April 2025

Understanding Rule 12AC for Updated Income Tax Returns: A Complete Guide

Rule 12AC: Filing an Updated Return of Income

Rule 12AC, which was brought into effect via Notification No. 48/2022 dated 29.04.2022, offers taxpayers the option to submit an updated return of income in accordance with Section 139(8A) of the Income Tax Act, 1961. This rule is applicable for the Assessment Year 2020-21 and onwards. The objective of this rule is to encourage voluntary compliance by tax payers as it enables them to correct their past omissions or mistakes from their previous returns or file returns that they earlier missed, subject to certain conditions.

Who Can File ITR-U?

The following are eligible to file ITR-U:

  • Individuals
  • Hindu Undivided Families (HUFs)
  • Firms
  • Limited Liability Partnerships (LLPs)
  • Companies
  • Associations of Persons (AOPs)
  • Bodies of Individuals (BOIs)
  • Local authorities
  • Artificial juridical persons

They should have:

  • Filed their original, belated, or revised return under Section 139(1), 139(4), or 139(5).
  • Overlooked filing any return for the applicable assessment year.

Key Note: ITR-U can be filed only once in an assessment year.

How to File ITR-U

Filing Mechanism by Eligibility

  • Electronically with Digital Signature: Companies, political parties, or individuals whose accounts are audited under Section 44AB (other than those using ITR-7).
  • Electronically with Digital Signature Certificate (DSC) or Electronic Verification Code (EVC): Individuals, HUFs, firms, AOPs, BOIs, local authorities, etc.

Timeline for Filing ITR-U

  1. Original Rule: The revised return should be furnished within 24 months from the last day of the concerned assessment year.
  2. Budget 2025 Amendment: From April 2025, the timeline is extended to 48 months (4 years) from the last day of the concerned assessment year, which instills better compliance.

Filing Examples:

  • For FY 2020-21 (AY 2021-22): ITR-U can be submitted up to 31st March 2025.
  • For AY 2022-23 (FY 2021-22): ITR-U can be filed up to 31st March 2026.

Circumstances Where ITR-U Can Be Filed

You may file ITR-U in the following circumstances:

  • Where the return was not earlier filed.
  • Where income was not properly reported.
  • Where the wrong head of income was chosen.
  • Where there's a rise in the tax payable.
  • If there is a decrease in carried forward loss, unabsorbed depreciation, or tax credit under Section 115JB/JC.
  • If the incorrect tax rate was used.

Circumstances Under Which ITR-U Cannot Be Filed

ITR-U cannot be filed in the following situations:

  • If the return shows a loss.
  • If it decreases total tax liability or enhances a refund.
  • If any search, survey, or prosecution proceedings have been initiated for the concerned Assessment Year.
  • If assessment, reassessment, revision, or recomputation is in progress for the concerned Assessment Year.

Tax Computation and Other Charges

The aggregate amount to be paid includes:

  • Tax on additional income
  • Interest
  • Late fee (in case of delay)
  • Additional tax

Additional Tax Rates (as per Section 140B):

  • Filing within 12 months: 25% of additional tax with interest.

  • Filing after 12 months but on or before 24 months: 50% of additional tax with interest. April 2025 onwards:

  • 12–24 months: 50%

  • 24–36 months: 60%

  • 36–48 months: 70%

Example Scenario

Take the case of Ms. Ritu, a freelance consultant, who did not report ₹2,00,000 of income for FY 2021-22 (AY 2022-23). On realizing this oversight in April 2024, she plans to file ITR-U.

  1. She computes the tax and interest on the missed ₹2,00,000.
  2. By submitting within 24 months, she pays a penalty of 50% of tax and interest.
  3. In case she submits after April 2025 (but within 36 months), the extra tax is 60%.

Step-by-Step Guide to Filing ITR-U

  1. Choose the applicable ITR Form (ITR 1–7) according to your income type and annex ITR-U.
  2. Offer necessary information:
    • PAN, Aadhaar, Assessment Year
  • Indicate if a return was previously filed
    • Specify the reason for updating (choose from the prescribed list)
    • State the period of filing (12/24/36/48 months)
    • Confirm if there is any reduction in carried forward loss, unabsorbed depreciation, or tax credit.
  1. Calculate tax liability on the updated income, including interest and additional tax.
  2. Remit the due tax, interest, and self-assessment tax before filing.
  3. File the return online (via DSC or EVC as applicable).
  4. Check and preserve the acknowledgment for your records.

Key Points and Recent Changes

  • No Refunds or Carry-Forward Losses: ITR-U cannot be used to claim or enhance a refund or carry forward more losses.
  • One-Time Opportunity: Only one revised return in an assessment year is allowed.
  • Extended Timeline: From April 2025, a four-year filing window will be available, with increasing additional tax rates for delayed filings.
  • Mandatory Additional Tax: Filing of ITR-U is barred when there is no additional tax payable to the government.
  • Verification Requirements: DSC is to be used by companies, political parties, and taxpayers under tax audit; others can use EVC.
  • Reporting Requirements: Detailed head-wise reporting of extra income and tax calculation is required in the revised return.
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