Section 113 — Block Period Tax (Search Assessment)

Case Laws & Commentary

SECTION 113 — TAX IN THE CASE OF BLOCK ASSESSMENT OF SEARCH CASES

Case Laws & Commentary (Income-tax Act, 1961 as amended by Finance Act, 2026)

A. SECTION COMMENTARY

A.1 Structural position & legislative purpose

Section 113 fixes the rate of tax on the undisclosed income of the block period determined under section 158BC, namely a flat sixty per cent. It is the rate provision that completes the block-assessment machinery for search and requisition cases under Chapter XIV-B. A proviso, inserted by the Finance Act, 2002 with effect from 1 June 2002, provides that the tax so chargeable be increased by a surcharge as levied by the relevant Central Act, fixed by reference to the date of the search under section 132 or the requisition under section 132A. The proviso remains in force; when block assessment was revived, the Finance (No. 2) Act, 2024 (Act No. 15 of 2024) omitted, with effect from 1 September 2024, only the words that applied the surcharge in the assessment year relevant to the previous year in which the search was initiated or the requisition made, so that the tax is now increased by the surcharge, if any, levied by any Central Act.

The original block-assessment scheme applied to searches initiated up to 31 May 2003, after which it was replaced by the section 153A/153C regime. The Finance (No. 2) Act, 2024 revived block assessment for searches initiated on or after 1 September 2024 (a recast Chapter XIV-B), with section 113's sixty-per-cent flat rate continuing to govern the block-period undisclosed income, so the provision is operative law once more.

A.2 Sub-section / clause taxonomy

Main limb (live): undisclosed income of the block period (section 158BC determination) is taxed at a flat sixty per cent. Proviso (Finance Act, 2002, w.e.f. 1 June 2002; words fixing the surcharge by reference to the assessment year of the search/requisition omitted by Act No. 15 of 2024 w.e.f. 1 September 2024): increases the tax by the surcharge, if any, levied by any Central Act.

A.3 Core doctrinal themes

Theme (1) - Single flat rate on undisclosed income: the block-period undisclosed income is taxed at a punitive flat sixty per cent, divorced from the slab system, reflecting the deterrent character of the search-assessment regime.

Theme (2) - Prospective surcharge: the surcharge proviso operates prospectively from 1 June 2002 and could not be applied to searches initiated before that date - the central holding in Vatika Township, which overruled the contrary view in Suresh N. Gupta.

Theme (3) - Presumption against retrospectivity: Vatika Township elevates this into a general canon - a statute imposing a new burden is presumed prospective unless the legislature clearly states otherwise; only beneficial or genuinely clarificatory provisions may be read retrospectively. This canon reaches beyond the proviso and is the section's enduring doctrinal contribution.

A.4 Legislative evolution / Finance Act amendment trail

Section 113 (flat-rate charge on block-period undisclosed income) accompanied the original Chapter XIV-B block-assessment scheme. The surcharge proviso was inserted by the Finance Act, 2002 w.e.f. 1 June 2002. Block assessment ceased for searches after 31 May 2003 (replaced by section 153A) and was revived, in recast form, by the Finance (No. 2) Act, 2024 for searches initiated on or after 1 September 2024; by the same Act the words in the surcharge proviso tying the surcharge to the assessment year of the search or requisition were omitted w.e.f. 1 September 2024, with section 113 continuing to supply the sixty-per-cent rate.

Finance Act 2026: no amendment to section 113. The flat sixty-per-cent rate continues to govern block-period undisclosed income for searches under the revived Chapter XIV-B.

A.5 CA practitioner pointers

(1) For any pre-1-June-2002 search, resist the levy of surcharge under the proviso - it was prospective (Vatika Township). (2) Distinguish 'undisclosed income of the block period' (section 113 at 60%) from regular total income; only the former attracts the flat rate. (3) Under the revived (post-1-September-2024) block scheme, the proviso increases the tax by the surcharge, if any, levied by any Central Act, its words tying the surcharge to the assessment year of the search having been omitted w.e.f. 1 September 2024. (4) Use Vatika Township as the lead authority wherever the Revenue seeks to apply an amendment imposing a fresh burden to an earlier period.

B. FINANCE ACT, 2026 - IMPACT NOTE

Section 113 is NOT amended by the Finance Act, 2026. The flat sixty-per-cent rate on block-period undisclosed income continues to govern search-and-requisition block assessments under the Chapter XIV-B scheme revived by the Finance (No. 2) Act, 2024 for searches on or after 1 September 2024. (Note: the surcharge proviso to section 113 remains in force; the Finance (No. 2) Act, 2024 omitted, w.e.f. 1 September 2024, only its words tying the surcharge to the assessment year of the search, and FA 2026 makes no change.)

C. CASE LAW - CLUSTERED BY ISSUE

Cluster C-1 : Prospective operation of the surcharge proviso (the landmark)

CIT v. Vatika Township (P) Ltd. (2014) 367 ITR 466 (SC) (Constitution Bench).

Facts: The Revenue sought to levy surcharge on block-period undisclosed income for a search conducted before 1 June 2002, relying on the proviso to section 113 inserted by the Finance Act, 2002. The question was whether that proviso was clarificatory/curative (and hence retrospective) or substantive (and hence prospective).

Issue: Whether the proviso to section 113 (surcharge), inserted with effect from 1 June 2002, applies to searches initiated before that date.

Held: The Constitution Bench held that the proviso is prospective; it is not clarificatory, declaratory or curative. Surcharge under the proviso cannot be levied on block assessments arising from searches initiated before 1 June 2002. The earlier view in CIT v. Suresh N. Gupta (2008) 297 ITR 322 (SC) was overruled.

Ratio: A statutory provision imposing a fresh levy or burden is presumed to operate prospectively unless the legislature expressly or by necessary implication makes it retrospective; the general rule against retrospectivity rests on fairness and the protection of vested rights. Only provisions conferring a benefit, or truly clarificatory of pre-existing law, may be applied retrospectively.

Relevance: The leading authority on section 113's surcharge proviso and, more broadly, the governing modern statement of the presumption against retrospective operation of taxing amendments - cited across the Act wherever the temporal reach of an amendment is in issue. Its value endures, beyond the proviso itself, as a canon of statutory construction.

Cluster C-2 : The overruled position and the doctrinal correction

CIT v. Suresh N. Gupta (2008) 297 ITR 322 (SC) (overruled on the surcharge point).

Facts: A two-judge Bench had held that the proviso to section 113 was clarificatory and that surcharge was leviable even for searches before 1 June 2002.

Issue: Whether the proviso was merely clarificatory of an already-existing liability to surcharge.

Held: Suresh N. Gupta had treated the proviso as clarificatory; this reasoning was expressly disapproved and overruled by the Constitution Bench in Vatika Township.

Ratio: A provision that alters the substantive tax burden cannot be characterised as clarificatory merely to achieve retrospective levy; the label does not control the legal effect.

Relevance: Marks the doctrinal correction - the practitioner relies on Vatika Township, not Suresh N. Gupta, on the temporal question; Suresh N. Gupta survives only on points not displaced by the larger Bench.

D. PRACTITIONER'S NOTE

Section 113 is short but doctrinally weighty. On the rate, the block-period undisclosed income bears a flat sixty per cent; on the surcharge, the proviso is prospective from 1 June 2002 (Vatika Township), and its words tying the surcharge to the assessment year of the search were omitted w.e.f. 1 September 2024. With block assessment revived for searches on or after 1 September 2024, section 113 is live law again - keep Vatika Township at hand as the governing authority on the wider presumption against retrospectivity, and note that, for the revived scheme, the proviso increases the tax by the surcharge, if any, levied by any Central Act.

E. SOURCES & CITATIONS

Caveat: Treatise-style commentary for practitioners and academic use; not legal opinion. The revived block-assessment scheme (searches on or after 1 September 2024) is recent and the surcharge proviso has been amended; verify the current statutory text of recast Chapter XIV-B, the applicable surcharge rates and the latest appellate position before relying on any proposition.