Section 80-I allowed a deduction of twenty per cent (twenty-five per cent for a company) of the profits and gains derived from a qualifying industrial undertaking, ship, hotel or business of repairs to ocean-going vessels or other powered craft. For undertakings, ships and hotels that began operating on or after 1 April 1990 but before 1 April 1991, sub-section (1A) raised the rate to twenty-five per cent (thirty per cent for a company).
The qualifying windows were closed by the section itself. An industrial undertaking had to begin manufacture or production, or operation of a cold storage plant, within ten years after 31 March 1981; a ship had to be brought into use within ten years after 1 April 1981; a hotel had to start functioning after 31 March 1981 but before 1 April 1991; and ship-repair work had to begin after 31 March 1983 but before 1 April 1988. The undertaking could not be formed by splitting up or reconstruction, or by transfer of used machinery (subject to a twenty per cent tolerance), and had to employ the stated number of workers.
Operative consequences
The deduction ran for the initial assessment year and the seven following years, extended to nine (co-operative societies, and 1990-91 starters) or eleven years, and cut to four for ship repairs (s. 80-I(5)).
Profits were computed as if the eligible business were the only source of income from the initial year (s. 80-I(6)).
A non-corporate, non-co-operative assessee needed an audit report in the prescribed form with the return (s. 80-I(7)).
Inter-unit transfers were taken at market value, and excessive profits from close connections could be reduced by the Assessing Officer (s. 80-I(8), (9)).
Status
Expired. The section has no bracketed note of omission, but on its own dates no deduction period can extend to assessment year 2026-27. The Finance Act, 2026 does not amend s. 80-I.
The Income-tax Act, 1961 governs assessment year 2026-27 and earlier years; the Income-tax Act, 2025 governs tax year 2026-27 onwards. For this subject, there is no corresponding provision.
Case Laws & Commentary
SECTION 80-I — DEDUCTION IN RESPECT OF PROFITS AND GAINS FROM INDUSTRIAL UNDERTAKINGS, ETC. AFTER A CERTAIN DATE
Case Laws & Commentary (Income-tax Act, 1961 as amended by Finance Act, 2026)
STATUTORY SCHEME (editorial summary — verbatim bare-Act text in the companion Block-1 file)
Marginal heading: Deduction in respect of profits and gains from industrial undertakings after a certain date, etc.
Section 80-I allowed a deduction (generally 20 per cent, 25 per cent for companies) of the profits and gains derived from a new industrial undertaking, ship, hotel business or repair of ocean-going vessels, which began to manufacture or operate within the qualifying dates, for the prescribed number of assessment years, subject to the new-undertaking conditions (not formed by splitting up or reconstruction, not by transfer of used machinery beyond the permitted limit, manufacture/production, etc.). It is the bridge provision between the old section 80J relief and the modern section 80-IA / 80-IB regime, and is spent for new undertakings.
A. SECTION COMMENTARY
A.1 Structural position
Section 80-I succeeded the omitted section 80J as the principal new-industrial-undertaking deduction and was in turn succeeded by sections 80-IA and 80-IB. Its jurisprudence on 'derived from', on the new-undertaking / reconstruction conditions, and on the quantum overlaps with sections 80HH and 80-IA.
A.2 Provision taxonomy
A percentage deduction (20 / 25 per cent), time-limited, conditioned on a genuinely new undertaking meeting the splitting-up/reconstruction, used-machinery, and manufacture conditions, computed on profits 'derived from' the undertaking.
A.3 Core doctrinal themes
(i) The 'new undertaking' condition — the unit must not be formed by the reconstruction or splitting up of an existing business; a genuinely new and identifiable undertaking, even if set up by an existing concern, qualifies (Textile Machinery Corporation). (ii) 'Derived from' — only first-degree industrial profits qualify (Sterling Foods; Pandian Chemicals). (iii) Quantum — the deduction is on gross profits and gains before depreciation/investment allowance for the pre-section-80AB years (Vijay Industries).
A.4 Legislative evolution / FA amendment trail
Re-introduced by the Finance (No. 2) Act, 1980 (succeeding section 80J); applicable to undertakings within the qualifying dates and now spent, the regime having moved to sections 80-IA and 80-IB. Not amended by the Finance Act, 2026.
A.5 CA practitioner pointers
(1) Test the new-undertaking / reconstruction condition by the Textile Machinery test — a new and separate identifiable unit qualifies even if set up by an existing assessee. (2) Apply the 'derived from' nexus. (3) Quantum on gross profits before depreciation for pre-80AB years. (4) Relevant only for open legacy assessments.
B. FA 2026 IMPACT NOTE
Section 80-I is NOT amended by the Finance Act, 2026 and is spent for new undertakings; its jurisprudence informs sections 80-IA and 80-IB.
C. CASE LAW — CLUSTERED BY ISSUE
Cluster C-1 : The 'new undertaking' / reconstruction condition
Facts: An existing concern set up new manufacturing units and claimed the new-undertaking relief; the Revenue contended the units were merely a reconstruction or expansion of the existing business.
Issue: When is an undertaking 'formed by the reconstruction of a business already in existence' so as to be disqualified, and when is it a genuinely new undertaking eligible for the relief.
Held: The Supreme Court held that a new and identifiable undertaking, separate and distinct from the existing business, set up with new capital and capable of producing on its own, is eligible even if it is established by an assessee already carrying on business; it is not disqualified merely because it arises in the course of expansion. Reconstruction connotes the same business being reorganised, not the setting up of a distinct new unit.
Ratio: The new-undertaking relief is available to a genuinely new, separate and identifiable unit; 'reconstruction' does not cover the establishment of a distinct new undertaking by an existing business.
Relevance: The foundational authority on the new-undertaking / reconstruction condition, applied across sections 80-I, 80-IA and 80-IB.
Cluster C-2 : 'Derived from' and quantum (cross-reference)
Facts: Section 80-I uses the same 'profits and gains derived from' formula as sections 80HH and 80-IA.
Issue: How the nexus and quantum questions are resolved for section 80-I.
Held: The 'derived from' nexus (Sterling Foods / Pandian Chemicals) excludes ancillary and incentive receipts; and for the pre-section-80AB years the deduction is on gross profits and gains before depreciation/investment allowance (Vijay Industries, which expressly addressed section 80-I).
Ratio: Section 80-I follows the section 80HH line on nexus and the gross-profits quantum.
Editorial scheme summary prepared from the Income-tax Act, 1961 as amended by the Finance Act, 2025, read with the Finance Act, 2026; verbatim bare-Act text is carried in the companion Block-1 treatise file. Digested authorities are reported Supreme Court / High Court decisions verified against standard law reports (ITR/Taxman/CTR). Several deductions in this cluster are sunset for new undertakings but carry substantial pending litigation and remain the governing law for open assessments.
Function in the statutory architecture
Section 80-I allowed a deduction of twenty per cent (twenty-five per cent for a company) of the profits and gains derived from a qualifying industrial undertaking, ship, hotel or business of repairs to ocean-going vessels or other powered craft. For undertakings, ships and hotels that began operating on or after 1 April 1990 but before 1 April 1991, sub-section (1A) raised the rate to twenty-five per cent (thirty per cent for a company).
The qualifying windows were closed by the section itself. An industrial undertaking had to begin manufacture or production, or operation of a cold storage plant, within ten years after 31 March 1981; a ship had to be brought into use within ten years after 1 April 1981; a hotel had to start functioning after 31 March 1981 but before 1 April 1991; and ship-repair work had to begin after 31 March 1983 but before 1 April 1988. The undertaking could not be formed by splitting up or reconstruction, or by transfer of used machinery (subject to a twenty per cent tolerance), and had to employ the stated number of workers.
Operative consequences
Status
Expired. The section has no bracketed note of omission, but on its own dates no deduction period can extend to assessment year 2026-27. The Finance Act, 2026 does not amend s. 80-I.
The Income-tax Act, 1961 governs assessment year 2026-27 and earlier years; the Income-tax Act, 2025 governs tax year 2026-27 onwards. For this subject, there is no corresponding provision.
Case Laws & Commentary
SECTION 80-I — DEDUCTION IN RESPECT OF PROFITS AND GAINS FROM INDUSTRIAL UNDERTAKINGS, ETC. AFTER A CERTAIN DATE
Case Laws & Commentary (Income-tax Act, 1961 as amended by Finance Act, 2026)
STATUTORY SCHEME (editorial summary — verbatim bare-Act text in the companion Block-1 file)
Marginal heading: Deduction in respect of profits and gains from industrial undertakings after a certain date, etc.
Section 80-I allowed a deduction (generally 20 per cent, 25 per cent for companies) of the profits and gains derived from a new industrial undertaking, ship, hotel business or repair of ocean-going vessels, which began to manufacture or operate within the qualifying dates, for the prescribed number of assessment years, subject to the new-undertaking conditions (not formed by splitting up or reconstruction, not by transfer of used machinery beyond the permitted limit, manufacture/production, etc.). It is the bridge provision between the old section 80J relief and the modern section 80-IA / 80-IB regime, and is spent for new undertakings.
A. SECTION COMMENTARY
A.1 Structural position
Section 80-I succeeded the omitted section 80J as the principal new-industrial-undertaking deduction and was in turn succeeded by sections 80-IA and 80-IB. Its jurisprudence on 'derived from', on the new-undertaking / reconstruction conditions, and on the quantum overlaps with sections 80HH and 80-IA.
A.2 Provision taxonomy
A percentage deduction (20 / 25 per cent), time-limited, conditioned on a genuinely new undertaking meeting the splitting-up/reconstruction, used-machinery, and manufacture conditions, computed on profits 'derived from' the undertaking.
A.3 Core doctrinal themes
(i) The 'new undertaking' condition — the unit must not be formed by the reconstruction or splitting up of an existing business; a genuinely new and identifiable undertaking, even if set up by an existing concern, qualifies (Textile Machinery Corporation). (ii) 'Derived from' — only first-degree industrial profits qualify (Sterling Foods; Pandian Chemicals). (iii) Quantum — the deduction is on gross profits and gains before depreciation/investment allowance for the pre-section-80AB years (Vijay Industries).
A.4 Legislative evolution / FA amendment trail
Re-introduced by the Finance (No. 2) Act, 1980 (succeeding section 80J); applicable to undertakings within the qualifying dates and now spent, the regime having moved to sections 80-IA and 80-IB. Not amended by the Finance Act, 2026.
A.5 CA practitioner pointers
(1) Test the new-undertaking / reconstruction condition by the Textile Machinery test — a new and separate identifiable unit qualifies even if set up by an existing assessee. (2) Apply the 'derived from' nexus. (3) Quantum on gross profits before depreciation for pre-80AB years. (4) Relevant only for open legacy assessments.
B. FA 2026 IMPACT NOTE
Section 80-I is NOT amended by the Finance Act, 2026 and is spent for new undertakings; its jurisprudence informs sections 80-IA and 80-IB.
C. CASE LAW — CLUSTERED BY ISSUE
Cluster C-1 : The 'new undertaking' / reconstruction condition
Textile Machinery Corporation Ltd. v. CIT (1977) 107 ITR 195 (SC)
Facts: An existing concern set up new manufacturing units and claimed the new-undertaking relief; the Revenue contended the units were merely a reconstruction or expansion of the existing business.
Issue: When is an undertaking 'formed by the reconstruction of a business already in existence' so as to be disqualified, and when is it a genuinely new undertaking eligible for the relief.
Held: The Supreme Court held that a new and identifiable undertaking, separate and distinct from the existing business, set up with new capital and capable of producing on its own, is eligible even if it is established by an assessee already carrying on business; it is not disqualified merely because it arises in the course of expansion. Reconstruction connotes the same business being reorganised, not the setting up of a distinct new unit.
Ratio: The new-undertaking relief is available to a genuinely new, separate and identifiable unit; 'reconstruction' does not cover the establishment of a distinct new undertaking by an existing business.
Relevance: The foundational authority on the new-undertaking / reconstruction condition, applied across sections 80-I, 80-IA and 80-IB.
Cluster C-2 : 'Derived from' and quantum (cross-reference)
Applied authorities: Sterling Foods (1999) 237 ITR 579 (SC); Vijay Industries (2019) 412 ITR 1 (SC)
Facts: Section 80-I uses the same 'profits and gains derived from' formula as sections 80HH and 80-IA.
Issue: How the nexus and quantum questions are resolved for section 80-I.
Held: The 'derived from' nexus (Sterling Foods / Pandian Chemicals) excludes ancillary and incentive receipts; and for the pre-section-80AB years the deduction is on gross profits and gains before depreciation/investment allowance (Vijay Industries, which expressly addressed section 80-I).
Ratio: Section 80-I follows the section 80HH line on nexus and the gross-profits quantum.
Relevance: Settled law controls; the section 80HH authorities apply to section 80-I.
Editorial note on sourcing
Editorial scheme summary prepared from the Income-tax Act, 1961 as amended by the Finance Act, 2025, read with the Finance Act, 2026; verbatim bare-Act text is carried in the companion Block-1 treatise file. Digested authorities are reported Supreme Court / High Court decisions verified against standard law reports (ITR/Taxman/CTR). Several deductions in this cluster are sunset for new undertakings but carry substantial pending litigation and remain the governing law for open assessments.