Income Tax Act 2025 India: What Changed from the 1961 Act (Effective FY 2026-27)
In short: The Income Tax Act 2025 replaces the 1961 Act effective 1 April 2026 (FY 2026-27, AY 2027-28). It is a structural rewrite, not a rate overhaul — slabs, rebates, and most deductions stay nearly identical to what Budget 2025 set out under the old framework. Key changes: a unified “Tax Year” concept replacing the dual AY/FY system, ~50% fewer sections (~536 vs 819), plain-language drafting, consolidated TDS provisions, and a single “Schedule” structure replacing chapter-and-subchapter nesting. Salaried taxpayers see almost no day-to-day change. Businesses, NRIs, and trusts see structural simplifications.
Why the 1961 Act Was Replaced
The Income Tax Act 1961 had grown unwieldy over six decades: 819 sections, 14 schedules, multiple repeals, amendments stacked on amendments, and language so dated that even tax officers needed cross-references. The new Act condenses this into 536 sections and 16 schedules, with modernised drafting. Tax law students often joke that the 1961 Act had become “a foreign-language document” — the 2025 Act fixes that.
What Did Not Change
Tax slabs and rates: The Budget 2025 rates carry through unchanged. New regime: 0-Rs 4L (0%), Rs 4-8L (5%), Rs 8-12L (10%), Rs 12-16L (15%), Rs 16-20L (20%), Rs 20-24L (25%), above Rs 24L (30%). Old regime continues at 0-2.5L (0%), 2.5-5L (5%), 5-10L (20%), above 10L (30%) for under-60s.
Section 87A rebate: Rs 12L income threshold under new regime, Rs 7L under old regime — unchanged.
Major deductions: 80C, 80D, 80E, 80G, 80TTA, 80TTB, 24(b) home loan interest, HRA, LTA — all carry forward with same caps and rules.
Capital gains rates: STCG 20%, LTCG 12.5% above Rs 1.25L on equity, 12.5% (no indexation) for property — all per Budget 2024-25 rules continue.
ITR forms: ITR-1 through ITR-7 numbering continues. Form selection logic stays similar.
What Did Change
1. “Tax Year” Replaces FY/AY
The dual concept of Financial Year (Apr-Mar period of income) and Assessment Year (Apr-Mar period of filing) confused everyone. The new Act introduces a single Tax Year concept. References in returns, notices, and forms will use Tax Year going forward. Practically: ITR for FY 2025-26 is now ITR for Tax Year 2025-26 (no AY 2026-27 separate).
2. Plain-Language Drafting
Sections are shorter, examples are inline, and cross-references use Section X(1)(a) rather than chained sub-clauses. Easier for non-CA taxpayers to read.
3. Consolidated TDS Schedule
All TDS rates across categories (salary, interest, rent, professional fees, etc.) appear in a single Schedule III rather than scattered across Sections 192-206. Easier reference for everyone deducting or claiming TDS credit.
4. Trust and Charitable Institution Reforms
Section 11/12/13 consolidated into a simpler framework. NGOs and Section 8 companies face streamlined annual filing.
5. Reduced Litigation Provisions
The new Act explicitly codifies positions from major High Court / Supreme Court judgments that had been disputed for decades, reducing future litigation on settled questions.
6. Digital-First Procedures
e-Assessment, faceless appeals, and digital notice service are now the default in the Act itself (not just CBDT circulars). Paper procedures are explicitly the exception.
Effective Dates
The Income Tax Act 2025 was passed by Parliament in 2025 and notified for commencement on 1 April 2026. All income earned from this date is governed by the new Act. Income earned in earlier periods (FY 2024-25 and before) continues to be assessed under the 1961 Act until those AYs close.
For FY 2025-26 (current ITR season for many), the 1961 Act still applies. Returns filed in 2026 for FY 2025-26 reference 1961 Act sections, even though the 2025 Act is now in force.
What You Should Do Now
- Update your bookmarks: Old Section 80C is now Section X.Y in the new Act (specific renumbering published in the Act). Practitioners are updating references.
- Read your Form 16 + ITR carefully: The format will reflect the new Act language starting from filings for Tax Year 2026-27 (filed in 2027).
- Software/CA reliance: Modern e-filing portals and tax software auto-handle the Act transition. You do not need to memorise new section numbers.
- Old advice still applies: Old vs new regime choice, 80C investments, HRA optimisation — strategy unchanged. See regime comparison.
Key Section Renumbering (Reference)
| 1961 Act | 2025 Act (approximate) | Topic |
|---|---|---|
| 80C | Same conceptual section, renumbered in chapter restructure | Tax-saving investments |
| 80D | Renumbered, content same | Health insurance |
| 10(13A) | Renumbered | HRA exemption |
| 24(b) | Renumbered | Home loan interest |
| 54 | Renumbered | Property reinvestment LTCG exemption |
| 192-194 | Consolidated Schedule III | TDS rates |
Exact mapping is in Schedule XV of the new Act. Most CAs maintain dual-reference notes.
FAQs
Does my last ITR (FY 2024-25) get reassessed under the new Act?
No. Returns filed for FY 2024-25 and earlier are governed by the 1961 Act, even if processed in 2026 or later.
Will tax software update automatically?
Yes — ClearTax, Quicko, IT Department portal, etc. have all rolled out the new Act-compatible forms for Tax Year 2026-27 returns.
Did any deduction cap get raised or lowered?
Caps stayed at Budget 2025 levels. No changes from the Act itself beyond what Budget 2025 set.
Is the new Act more taxpayer-friendly?
Structurally yes (simpler language, consolidated TDS, less litigation). Substantively, rates and rules are the same as Budget 2025.
Sources
- Income Tax Act, 2025 (notified for commencement 1 April 2026)
- CBDT FAQs on the new Act
- Finance Bill 2025 and accompanying memorandum
