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Income-tax Act, 2025 | Section 143

Section 143 - Special provisions in respect of certain undertakings in North-Eastern States

Qualifying North-Eastern undertakings receive 100% of eligible profits for ten consecutive tax years from the initial tax year, subject to commencement, business type and anti-abuse conditions.

Reviewed by CA Nikhil Gupta · Updated 9 October 2026

Section 143: operativeEffective 1 April 2026Tax Year 2026-27 onwardLegally reviewed 8 October 2026

Current-law control

This page uses the consolidated Income-tax Act, 2025 as amended by the Finance Act, 2026. The Act and Income-tax Rules, 2026 operate from 1 April 2026. Earlier years and saved proceedings remain subject to the repeal-and-savings framework.

Primary statute: Income Tax Department consolidated Act   |   Rules: Notified Income-tax Rules, 2026

2-minute decode

Qualifying North-Eastern undertakings receive 100% of eligible profits for ten consecutive tax years from the initial tax year, subject to commencement, business type and anti-abuse conditions.

Who should use this section

Eligible undertakings, enterprises or units claiming a profit-linked or transition deduction, generally subject to historical eligibility and audit conditions This applicability note is specific to section 143.

Old-law bridge

1961 Act section 80-IE

The bridge is navigational only. A 1961 Act case or rule is carried forward only after checking wording, transition provisions and the current 2025 Act text.

Professional alert

Exception / professional alert The commencement window is historical and several excluded activities apply. Rule 66/Form 32 and original approvals are essential.

Connected Income-tax Rules, 2026 and Forms

RuleCurrent controlForm
Rule 66Audit report for profit-linked deductionsForm 32

Worked application

A qualifying undertaking that commenced within the statutory window and has three years left can continue the remaining period, subject to the section.

Evidence / compliance checklist

  • Maintain the original eligibility file for section 143, including commencement/approval history and the remaining deduction period.
  • Keep unit-wise books and a computation linking eligible profits to the qualifying undertaking or activity (section 143: Special provisions in respect of certain undertakings in North-Eastern States).
  • Where Rule 66 applies, obtain Form 32 and reconcile the accountant-certified figures to the return before the due date (section 143: Special provisions in respect of certain undertakings in North-Eastern States).
  • Preserve evidence that reconstruction, transfer, location, approval and other formation conditions continue to be satisfied (section 143: Special provisions in respect of certain undertakings in North-Eastern States).

Common mistake

Treating section 143 as a fresh 2026 tax holiday. For section 143, the preserved or transitional old-law eligibility must be checked specifically; the deduction clock does not restart merely because the 2025 Act is now in force.

Recommended approach

For section 143, fix the governing tax year, identify the operative sub-section for “Special provisions in respect of certain undertakings in North-Eastern States”, trace every amount to evidence, apply only verified Rule/Form links, and retain a computation that another reviewer can reproduce from the primary source.

Thresholds, periods and timing checkpoints

Judicial / interpretive bridge

Related provisions

Current statutory text

143. (1) Where the gross total income of an assessee includes any profits and gains derived by an undertaking, to which this section applies, from any business referred to in sub-section (2), there shall be allowed, in computing the total income of the assessee, a deduction of an amount equal to 100% of the profits and gains derived from such business for ten consecutive tax years commencing with the initial tax year. (2) This section applies to any undertaking which during the period beginning on the 1st April, 2007 and ending before the 1st April, 2017, has begun or begins, in any of the North-Eastern States,— (a) to manufacture or produce any eligible article or thing; or (b) to undertake substantial expansion to manufacture or produce any eligible article or thing; or (c) to carry on any eligible business. (3) This section applies to any undertaking which fulfils all the following conditions:— (a) it is not formed by splitting up, or the reconstruction, of a business already in existence (other than an undertaking which is formed as a result of the re-establishment, reconstruction or revival by the assessee of the business of any such undertaking as is referred to in section 140(4), in the circumstances and within the period specified therein); (b) it is not formed by the transfer to a new business of machinery or plant previously used for any purpose. (4) For the purposes of sub-section (3)(b), the provisions of section 140(5) and (6) shall apply. (5) Irrespective of anything contained in any other provision of this Act, in computing the total income of the assessee, no deduction shall be allowed under any other section contained in this Chapter in relation to the profits and gains of the undertaking. (6) Irrespective of anything contained in this Act, no deduction shall be allowed to any undertaking under this section, where the total period of deduction inclusive of the period of deduction under this section or under second proviso to section 80-IB(4) of the Income-tax Act, 1961 (43 of 1961) exceeds ten tax years. (7) The provisions contained in section 140(7) to (15) shall, so far as may be, apply to the eligible undertaking under this section. (8) For the purposes of this section,— (a) “eligible article or thing” means the article or thing other than the following:— (i) goods falling under Chapter 24 of the First Schedule to the Central Excise Tariff Act, 1985 (5 of 1986), which pertains to tobacco and manufactured tobacco substitutes; (ii) pan masala as covered under Chapter 21 of the First Schedule to the Central Excise Tariff Act, 1985 (5 of 1986); (iii) plastic carry bags of less than twenty microns as specified by the Ministry of Environment and Forests vide notification numbers S.O. 705(E), dated the 2nd September, 1999 and S.O. 698(E), dated the 17th June, 2003; and (iv) goods falling under Chapter 27 of the First Schedule to the Central Excise Tariff Act, 1985 (5 of 1986), produced by petroleum oil or gas refineries; (b) “eligible business” means the business of— (i) hotel (not below two star category); (ii) adventure and leisure sports including ropeways; (iii) providing medical and health services in the nature of nursing home with a minimum capacity of twenty-five beds; (iv) running an old-age home; (v) operating vocational training institute for hotel management, catering and food craft, entrepreneurship development, nursing and para-medical, civil aviation related training, fashion designing and industrial training; (vi) running information technology related training centre; (vii) manufacturing of information technology hardware; and (viii) bio-technology; (c) “initial tax year” means the tax year in which the undertaking begins to manufacture or produce articles or things, or completes substantial expansion; (d) “North-Eastern States” means the States of Arunachal Pradesh, Assam, Manipur, Meghalaya, Mizoram, Nagaland, Sikkim and Tripura; (e) “substantial expansion” means increase in the investment in the plant and machinery by at least 25% of the book value of plant and machinery (before taking depreciation in any year), as on the first day of the tax year in which the substantial expansion is undertaken.

Primary-source trail

FAQs

What does section 143 of the Income-tax Act, 2025 cover?

Section 143 covers special provisions in respect of certain undertakings in north-eastern states. The operative result depends on the exact statutory conditions shown on this page and applies from 1 April 2026, subject to transition/savings provisions.

Who should check section 143?

Eligible undertakings, enterprises or units claiming a profit-linked or transition deduction, generally subject to historical eligibility and audit conditions This applicability note is specific to section 143.

Are there specific Rules or Forms for section 143?

Rule 66 - Audit report for profit-linked deductions / Form 32

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