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Income Tax

IT Act 2025 vs IT Act 1961 -- Side by Side Comparison

VS Vikas Sharma 📅 March 23, 2026 ⏱️ 5 min read 👁️ 1 views Updated: Mar 25, 2026

Overview

This article provides a detailed, section-by-section analysis of IT Act 2025 vs IT Act 1961 under the Income Tax Act, 2025 (effective 1 April 2026). The new Act replaces the Income Tax Act, 1961 with 536 sections across 23 chapters and 16 schedules -- a 40% reduction in legislative volume. This article maps the new provisions to their 1961 Act equivalents, highlights what has changed, and explains the practical impact.

Relevant provisions: Various of the Income Tax Act, 2025.

Key Context
The Income Tax Act, 2025 was passed by Parliament on 21 August 2025 and received Presidential assent on the same day. It comes into effect from 1 April 2026 (Tax Year 2026-27 onwards). The 1961 Act continues to govern all tax years up to 31 March 2026. All pending assessments, appeals, and proceedings for earlier years remain under the 1961 Act (Section 536 -- Repeal and Savings). The new Act does not impose any new tax or increase rates -- the reform is structural and linguistic, not substantive.

What the New Act Says

Provision Under IT Act 2025

Various of the Income Tax Act, 2025 establishes the framework for IT Act 2025 vs 1961. Key features of the new provision:

  • Simplified language: All provisos and explanations from the 1961 Act have been absorbed into the main text as sub-sections, clauses, or sub-clauses. Not a single proviso or explanation exists in the entire new Act.
  • Logical organization: Related provisions that were scattered across the 1961 Act are now grouped together under a single chapter/section.
  • Tables and formulas: Where the 1961 Act used verbose narrative, the new Act uses clear tables and mathematical formulas for computation.
  • Reduced cross-references: The new Act minimizes cross-referencing between distant sections, making each provision more self-contained.

Comparison: Old Act (1961) vs New Act (2025)

FeatureIT Act, 1961IT Act, 2025
Total Sections819+ (with amendments)536
Chapters4723
Schedules1416
Provisos1,200+Zero
Explanations900+Zero (absorbed into main text)
PY/AY SystemPrevious Year + Assessment YearUnified "Tax Year"
TDS Sections65+ scattered sections9 consolidated clauses (390-398)
NPO/TrustScattered across Sec 11, 12A, 80G etc.Dedicated Chapter (Sec 332-355)
LanguageDense, archaic, heavy cross-referencingPlain English, self-contained
Tax RatesAs per Finance ActSame -- no change in rates
Tax Year Concept
The most visible change: "Previous Year" and "Assessment Year" are replaced by a single "Tax Year" (Section 3). The Tax Year is the 12-month period starting 1 April. Income earned in Tax Year 2026-27 is computed and taxed for that same Tax Year -- no more confusing PY/AY distinction. For new businesses, the Tax Year runs from the date of setup to the following 31 March.

Detailed Analysis with Examples

Example 1 (Salaried): Rahul files his return for Tax Year 2026-27 under the new Act. His salary computation follows the same logic as before (gross salary minus standard deduction of Rs. 75,000 under the new regime), but the provision is now found in a single, clearly worded section instead of scattered across Sections 15, 16, and 17 of the old Act. The standard deduction of Rs. 75,000 is now codified in the Act itself (not just in the Finance Act), giving it legislative permanence.

Example 2 (Business): Priya's trading business (turnover Rs. 2 crore, 90% digital) uses the presumptive taxation provision equivalent to old Section 44AD. The computation remains identical -- 6% of digital receipts + 8% of cash receipts -- but the language is clearer, and the Rs. 3 crore threshold (with digital receipts condition) is presented as a simple table rather than a multi-proviso narrative.

Example 3 (Capital Gains): An investor selling listed equity shares in Tax Year 2026-27 applies Clause 196/198 (equivalent to old Section 111A/112A). STCG remains at 20%, LTCG at 12.5% above Rs. 1.25 lakh exemption. The holding period rules (12 months for listed equity, 24 months for others) are codified in a clear table under Section 67 equivalent. Indexation continues to be unavailable (as per Finance Act 2024 changes, now permanently codified).

Practical Advice
For IT Act 2025 vs 1961 under the new Act, the substantive compliance requirements remain largely the same. What changes is where you find the provision and how it reads. Tax professionals should familiarize themselves with the new section numbering. The CBDT has published an official concordance table mapping old sections to new ones. we are fully prepared for the transition.

Select Committee Corrections

The Select Committee (chaired by MP Baijayant Panda) submitted 285 recommendations -- 84 substantive and 201 drafting corrections. Key corrections relevant to IT Act 2025 vs 1961 include:

  • Standard deduction raised from Rs. 50,000 to Rs. 75,000 and codified in the Act
  • Anonymous donation provisions (Clause 337) corrected to restore exemption for religious-cum-charitable trusts
  • "Income" definition in Clause 335 fixed to ensure gross receipts are not taxed
  • Various cross-referencing errors fixed throughout

Transition Rules -- Section 536

Important Transition Points
Section 536 (Repeal and Savings) contains 22 sub-clauses ensuring smooth transition:

1. All proceedings for Tax Years up to 2025-26 continue under the 1961 Act
2. No expired limitation is revived under the new Act
3. Existing rights, obligations, and liabilities remain intact
4. Pending assessments, appeals, and penalty proceedings continue under old Act
5. Section 6 of the General Clauses Act, 1897 applies to fill any gaps
6. TDS/TCS certificates issued under the old Act remain valid
7. Registrations (12A/80G etc.) granted under old Act are deemed valid under new Act

New Act Section Mapping

TopicOld Act (1961)New Act (2025)Change
Charging SectionSection 4Section 4Unified (includes surcharge/cess)
Scope of IncomeSection 5Section 5Same structure, clearer language
Residential StatusSection 6Section 6Simplified, same substance
SalarySections 15-17Part D (consolidated)Merged, provisos removed
House PropertySections 22-27Part E (consolidated)Simplified annual value computation
Business/ProfessionSections 28-44Part F (consolidated)Cleaner deduction framework
Capital GainsSections 45-55Part G; Clauses 67, 196-198Reorganized, table-based
Other SourcesSection 56-59Part HGift taxation simplified
TDS (65+ sections)Sections 190-206Sections 390-398 (9 clauses)Massively consolidated
NPO/TrustScattered (11,12A,80G etc.)Chapter XVII-B (332-355)Dedicated chapter -- major improvement
PenaltiesSections 270A-280Clauses 439-498Recalibrated, same substance
AppealsSections 246A-262Clauses 356-374Faceless appeal codified
Repeal & SavingsN/ASection 53622 sub-clauses for transition

IT Rules 2025 -- What Changed

Rules Simplified
The Income Tax Rules have been reduced from 511 rules with 399 forms to 333 rules with 190 forms. Key changes:

1. Perquisite valuation rules simplified and presented as tables
2. Depreciation rates consolidated into a single clear schedule
3. ITR forms to be redesigned for the Tax Year concept
4. TDS return forms simplified to match the 9-clause TDS structure
5. Valuation rules for shares (Rule 11UA equivalent) retained with clearer formulas
6. Faceless assessment procedural rules codified
7. Trust/NPO registration forms aligned to the dedicated chapter
Disclaimer
This article is for general informational and educational purposes only. It does not constitute tax, legal, or professional advice. While every effort has been made to ensure accuracy based on the Income Tax Act, 2025, Income Tax Rules, 2025, and CBDT guidelines as amended up to March 2026, tax laws change frequently. Consult a qualified Chartered Accountant or tax professional before acting. TaxClue Consultech Pvt Ltd accepts no liability for any loss arising from use of this information. All samples are illustrative only. Use at your own risk.

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❓ Frequently Asked Questions
What is IT Act 2025 vs 1961 under the new IT Act 2025?
Various of the IT Act 2025 governs this. It replaces/simplifies the equivalent 1961 Act provision.
When does the new Act come into effect?
1 April 2026. Tax Year 2026-27 onwards. The 1961 Act governs all years up to 31 March 2026.
Do tax rates change under the new Act?
No. Tax rates, slabs, and exemption limits remain the same. The reform is structural and linguistic, not substantive.
How can TaxClue help with the transition?
Complete transition advisory and compliance services. .

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Vikas Sharma VERIFIED EXPERT
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