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Income-tax prosecution | Updated 28 October 2026

Section 276CCC of the Income-tax Act, 1961: Failure to File a Return in Search Cases

Section 276CCC deals with a wilful failure to furnish the return of undisclosed income for a block period in response to a notice issued under Section 158BC(1)(a). The Finance Act, 2026 substantially revised the punishments with effect from 1 March 2026.

Current-law context: The Income-tax Act, 2025 came into force on 1 April 2026. Section 480 is the corresponding provision under that Act. For earlier searches, assessment years and alleged defaults, the 1961 Act and the repeal-and-savings rules must be examined together; do not assume the same law governs every case.

1. Meaning and scope of Section 276CCC

The offence is tied to a return required through a notice under Section 158BC(1)(a), not merely to the fact that a search occurred. Under the text substituted by Section 26 of the Finance Act, 2026, a person who wilfully fails to furnish in due time the return of income setting forth undisclosed income for the block period may face prosecution.

Wilful failure denotes a deliberate default; inadvertence, lack of notice, genuine impossibility and other case-specific facts require separate legal evaluation. A tax demand or an assessment order alone does not automatically prove the criminal offence.

  • Section 132: Authorises income-tax search and seizure subject to statutory conditions.
  • Section 132A: Provides for requisition of books, documents or assets from specified authorities in prescribed circumstances.
  • Section 158BC(1)(a): Governs the notice requiring the person concerned to furnish a return of undisclosed income for the block period under the special search-assessment framework.
  • Block period: The period defined for the special assessment of undisclosed income arising from a qualifying search or requisition; the applicable definition depends on the legislative regime and search date.
  • Undisclosed income: Income identified under the relevant block-assessment provisions, not simply all income of the taxpayer.

3. Punishment from 1 March 2026

Section 26 of the Finance Act, 2026 (official text) substituted Section 276CCC retrospectively from 1 March 2026:

Amount of taxStatutory punishment
More than Rs. 50 lakhSimple imprisonment up to 2 years, or fine, or both.
More than Rs. 10 lakh but not more than Rs. 50 lakhSimple imprisonment up to 6 months, or fine, or both.
Rs. 10 lakh or belowFine.

The monetary amount and the facts must be established in the relevant proceeding. These are the substituted statutory categories; they do not mean prosecution or conviction is automatic.

4. Historical statutory exception

The proviso protects against punishment under Section 276CCC for a failure relating to a search initiated under Section 132, or books, documents or assets requisitioned under Section 132A, after 30 June 1995 but before 1 January 1997. This narrow historical exception is preserved in the 2026 substituted text.

5. Legislative history and changes

  • Finance Act, 1997: Introduced Section 276CCC with effect from 1 January 1997. The earlier punishment was imprisonment from 3 months to 3 years and fine.
  • Finance (No. 2) Act, 2024: Updated the reference to clause (a) of Section 158BC(1), reflecting the reintroduced block-assessment framework.
  • Finance Act, 2026, Section 26: Substituted the offence and its punishment framework with effect from 1 March 2026, introducing tax-amount bands and simple imprisonment/fine alternatives.
  • Income-tax Act, 2025: Effective from 1 April 2026, with corresponding Section 480 and transition/savings provisions.

6. Illustrative situations

Example A: A valid block-return notice is served and a taxpayer intentionally declines to furnish the required return by the due date. The authority may examine prosecution under the applicable statutory framework, including whether the default was wilful.

Example B: A taxpayer fails to file because a notice was never lawfully served. The notice and service records may be central to deciding whether the ingredients of the offence are met.

Example C: A case relates to a search within the historical period specified in the proviso. The express exclusion must be considered before applying Section 276CCC.

7. Difference between Sections 276CC and 276CCC

Section 276CC generally addresses wilful non-filing of income returns required under the ordinary return and specified notice provisions. Section 276CCC specifically addresses the block-period return of undisclosed income required by a search-case notice under Section 158BC(1)(a). The two provisions should not be treated as interchangeable.

8. Income-tax Act, 2025: Section 480

The official section-mapping document identifies Section 480 of the Income-tax Act, 2025 as corresponding to Section 276CCC of the 1961 Act. Consult the official section-mapping reference and the enacted law before applying it. Section 536 of the 2025 Act contains repeal-and-savings provisions relevant to prior periods and proceedings.

9. Frequently asked questions

What is Section 276CCC of the Income-tax Act, 1961?

It concerns wilful failure to furnish within the prescribed time a return of undisclosed income for a block period when required by notice under section 158BC(1)(a).

What is the punishment under Section 276CCC from 1 March 2026?

Where tax exceeds Rs. 50 lakh, simple imprisonment up to two years or fine or both; where tax exceeds Rs. 10 lakh but not Rs. 50 lakh, simple imprisonment up to six months or fine or both; otherwise fine.

Does every late return in a search case lead to prosecution?

No. The provision requires wilful failure to furnish a return required by a qualifying notice; statutory exceptions and the facts of the case must also be considered.

Which section corresponds to Section 276CCC in the Income-tax Act, 2025?

Section 480 addresses failure to furnish a return of undisclosed income in search cases; the applicable law and savings provisions depend on the period and conduct concerned.

10. Official statutory references

This article is general legal information. Search dates, notice validity, legislative commencement and transitional provisions can change the outcome of a particular case.