Income-tax Act 2025 transition provisions: Which Pending Rights Survive, Which Litigation Arguments Weaken?

The new statute repeals the old law, but not its afterlife. In tax controversy, the real fight is now about continuity: what survives the switch, and on what terms.

The savings clause is the new battlefield

Income-tax Act 2025 transition provisions will decide far more litigation than the cleaner drafting or the new section numbers ever will. India is moving the law to a shorter code, but it is doing so inside a tax system of immense scale: the Receipt Budget 2026-27 says 8,67,67,752 returns were filed for AY 2024-25 up to 30 November 2025, reporting taxable income of Rs 1,17,22,177.26 crore, while Budget 2026-27 estimates the Centre’s net tax receipts at Rs 28.7 lakh crore. In a regime where the government’s own implementation note says almost 99 per cent of returns are already on self-assessment, transition drafting is not clerical housekeeping. It is risk allocation. (Sources: Receipt Budget 2026-27, Annexure 7; Union Budget 2026-27 Budget Speech; Implementation of Budget Announcements 2025-26.)

Income-tax Act 2025 transition provisions do not treat repeal as a clean slate. Section 536 repeals the 1961 Act, then preserves prior operation, accrued rights and liabilities, pending proceedings, options already exercised, carry-forward items, search cases, and surviving notifications and circulars subject to consistency with the new law. Section 536(4) then adds a second shield by invoking section 6 of the General Clauses Act, 1897. Read together, that is the core message of the transition: repeal is not amnesty, and renumbering is not escape. (Source: Income-tax Act, 2025, sections 536(1), 536(2), 536(4).)

Pending proceedings survive. Revival theories do not.

The CBDT’s March 2026 FAQs say pending appeals before the Commissioner (Appeals), the Appellate Tribunal or the courts continue under the 1961 Act, and even appeals filed after 1 April 2026 for AY 2026-27 or earlier still run under the old statute if they relate to pre-2026 tax years. Rectification applications and revision petitions already filed do not need to be filed again. Fresh revision for an old year can still be initiated after repeal, but only if limitation under the 1961 Act has not expired. (Source: FAQs on Interplay and Transition, Q7.4, Q7.5, Q7.6, Q7.22, Q10.10.)

The rights most likely to survive are the ones the statute identifies with precision. Refund entitlements for old years survive. Losses carried forward from the 1961 Act survive without a restart of the original clock. MAT and AMT credits migrate into the new law but remain tied to their original time discipline. Options, declarations and elections also survive, though only where a corresponding provision exists in the 2025 Act. Continuity is statutory, not sentimental. A taxpayer gets the benefit of a mapped bridge, not a free-floating vested right to any historical preference. (Source: Income-tax Act, 2025, section 536(2)(f), (l), (m), (n); FAQs on Interplay and Transition, Q2.25-Q2.31, Q3.23, Q8.17, Q8.24.)

Where transition arguments weaken

Several familiar litigation positions weaken. The easiest weak argument is the plea that a dead limitation under the 1961 Act springs back to life because the 2025 Act is newer or procedurally different. The FAQs reject that directly: if limitation to file an appeal, revision or reference had already expired before commencement, the new Act does not revive it. Another weak argument is that any old option automatically rolls forward forever. Section 536(2)(f) preserves only options that can attach to a corresponding provision. A third weak argument is that a departmental circular survives simply because it once existed. Under section 536(2)(j), it survives only so far as it is not inconsistent with the new Act. (Source: Income-tax Act, 2025, section 536(2)(f), (j), (k); FAQs on Interplay and Transition, Q7.6, Q10.5-Q10.9.)

Grandfathered relief is not frozen computation

The subtler fights will come from cases where a right survives, but its computation base changes. CBDT’s own guidance says an eligible deduction carried forward from the old Act may continue into post-2026 tax years, yet the profit on which that deduction is computed can still be determined under the 2025 Act. The right may be grandfathered, but the arithmetic may not be. That will matter in infrastructure deductions, special business deductions and other multi-year incentives. For corporate taxpayers, it changes provisioning, deferred-tax modelling, dispute valuation and M&A diligence. (Source: FAQs on Interplay and Transition, Q8.16, Q8.18, Q8.20.)

Finance Act 2026 quietly tightened this logic. Its memorandum says section 536(2)(h) was widened because the original drafting did not capture every case in which an amount earlier deducted or excluded under the 1961 Act would later need to be pulled back into income even without a breach of conditions. The amendment therefore preserves future taxability where the old law would have required inclusion had it not been repealed. That materially weakens the argument that repeal dissolved later claw-backs. Search cases face an even harder wall: section 536(2)(v) ring-fences pre-commencement searches and requisitions so that connected proceedings continue wholly under the old Act. (Source: Finance Bill 2026 Memorandum, para 582; Income-tax Act, 2025, section 536(2)(h), (v); FAQs on Interplay and Transition, Q8.22, Q10.11.)

Why the middle class and professional market still care

For the middle class, the transition question is less about precedent-rich appeals and more about friction that can ripen into low-value disputes. The FAQs make clear that AY 2026-27 obligations under the old law and Tax Year 2026-27 obligations under the new law are independent. They also split March 2026 and April 2026 TDS credits across different legal periods. In practice that means refund timing, AIS mapping, payroll alignment and late-credit complaints will sit at the seam between two statutes. A salaried taxpayer may never cite section 536, but the consequences of section 536 will still reach him through certificates, reconciliations and delayed credits. (Source: FAQs on Interplay and Transition, Q3.20, Q6.25-Q6.27.)

For tax professionals, the immediate premium shifts from recall of section numbers to classification discipline. Before arguing merits, they will need to ask: What is the relevant tax year? Was the right already accrued? Is the proceeding pending, newly initiated or time-barred? Is the claim a continuation of an old benefit, or a fresh claim under the new Act? Section 535 adds one more variable because it authorises removal-of-difficulty orders, including adaptations for tax years ending on 31 March 2026 or earlier, for up to three years from 1 April 2026. That may reduce procedural gaps, but it can also open a second layer of contest over whether an administrative adaptation stayed within statutory limits. (Source: Income-tax Act, 2025, section 535; FAQs on Interplay and Transition.)

The real litigation risk

The cleanest way to read the 1961-to-2025 switch is this: substantive continuity has been preserved more aggressively than many taxpayers first assumed, but only within clearly drafted lanes. Rights survive where the statute or the savings clause says they survive. Arguments weaken where parties try to smuggle in revival, enlargement or inconsistency through the back door. That is sensible policy. A tax code of this scale could not have afforded a fiscal cliff in pending proceedings. But it also means the first generation of transition litigation will turn on classification – whether a case is truly old, partly old, newly computed, conditionally preserved, or already lost on limitation. In Indian tax controversy, that is enough to keep the next few years busy. (Source: Income-tax Act, 2025, sections 535-536; FAQs on Interplay and Transition; Finance Bill 2026 Memorandum.)

Decision tree for the 1961-to-2025 transition

Sample argument map

Sources & Data Points

1. Income-tax Act, 2025 [30 of 2025], as amended by Finance Act, 2026 – Used for sections 535 and 536, including repeal and savings, search continuity, carry-forwards, and the express application of section 6 of the General Clauses Act. Open official source

2. FAQs on Interplay and Transition – Income-tax Act, 2025 – Used for pending appeals, limitation, fresh revision for old years, migration of options, carry-forward of losses and MAT credit, dual-return logic, TDS/AIS split, and search continuity. Open official source

3. Union Budget 2026-27 Budget Speech – Used for the 1 April 2026 effective date of the new Act, the redesign of rules and forms, and the estimate of Rs 28.7 lakh crore in the Centre’s net tax receipts for 2026-27. Open official source

4. Receipt Budget 2026-27 – Used for the return-filing scale and tax-receipt context, including Annexure 7 data on 8,67,67,752 returns filed for AY 2024-25 and reported taxable income of Rs 1,17,22,177.26 crore. Open official source

5. Receipt Budget 2026-27 – Annexure 7, Statement of Revenue Impact of Tax Incentives – Used for the aggregate return-filing, taxable-income and gross-tax data cited in the opening section. Open official source

6. Finance Bill, 2026 Memorandum – Used for the official explanation of the amendment to section 536(2)(h), including the preservation of later income inclusion even where no breach condition is involved. Open official source

7. Implementation of Budget Announcements 2025-26 – Used for the department’s self-assessment context – almost 99 per cent returns being on self-assessment – and the broader transition narrative. Open official source

8. Income-tax Rules, 2026 notification dated 20 March 2026 – Supplementary official source for the commencement of the new rules from 1 April 2026. Open official source