Find any section in the
new Income Tax Act
Search by old section number (1961 Act) or new section number (2025 Act). 536 new sections mapped from 635 old sections.
Key Changes Under the New Act
What the new Income Tax Act 2025 means for different taxpayers.
For Salaried Taxpayers
Standard deduction, HRA exemption, and leave encashment exemption continue under the new act. The new tax regime (lower rates, fewer deductions) remains the default. Section 80C investments (PPF, ELSS, insurance) and Section 80D (health insurance) continue with the same limits. Key change: section numbers have been reorganised, but the tax calculation remains the same.
For Business Owners
Business income computation rules (previously Sections 28-44) have been consolidated and reorganised. Presumptive taxation schemes (44AD, 44ADA, 44AE) continue with new section numbers. Depreciation rules, capital gains treatment, and TDS obligations remain substantively the same. The new act simplifies cross-referencing between related provisions.
For NRIs
Residential status determination and taxation rules for non-residents remain unchanged in substance. DTAA provisions, TDS on payments to non-residents, and the scope of income deemed to accrue in India continue. Section 195 (TDS on non-resident payments) has a new section number but the same compliance requirements.
For Startups
Startup tax benefits (previously Section 80-IAC) continue under the new act. DPIIT-recognised startups retain their 3-year tax holiday. Angel tax provisions, ESOP taxation rules, and carry-forward of losses for eligible startups remain the same. The new act consolidates startup-related provisions for easier reference.
For HUFs (Hindu Undivided Families)
HUF taxation provisions continue under the new act. HUFs remain a separate taxable entity with their own PAN, return filing, and deduction eligibility. The old tax regime slabs for HUFs remain the same as for individuals. Deductions under 80C, 80D, and other sections continue to be available to HUFs. The partition and dissolution provisions have been reorganised but remain substantively unchanged.
For Partnership Firms & LLPs
Partnership firms and LLPs continue to be taxed at a flat rate of 30% plus surcharge and cess. The presumptive taxation option under Section 44AD (turnover up to Rs 2 crore) continues for eligible firms. Remuneration and interest to partners remain deductible subject to the same limits specified under the old Section 40(b). The new act reorganises these provisions but does not change the rates or limits.
For Charitable Trusts & NGOs
The registration and compliance framework for charitable trusts and NGOs (previously Sections 11, 12, 12A, 12AB, and 80G) has been consolidated under the new act. The requirement for fresh registration under the new regime continues. Trusts must still apply 85% of income for charitable purposes. The new act consolidates scattered provisions into a dedicated chapter on non-profit organisations, making compliance requirements easier to follow.
In-Depth Guides
Plain-English explanations of the most important changes.
How Section 80C Changes Under the New Income Tax Act 2025
PPF, ELSS, LIC, and other tax-saving deductions - what changes and what stays the same.
Income Tax Act 2025HRA Exemption Under the New Act - What Renters Need to Know
Does HRA still exist? How is it calculated? Complete guide with examples.
Income Tax Act 2025Home Loan Tax Benefits Under the New Act
Interest deduction, principal repayment, and pre-construction interest - all benefits mapped.
Income Tax Act 2025Income Tax Slabs 2025-26: Complete Comparison
New regime vs old regime slabs with examples and breakeven analysis.
Income Tax Act 2025TDS Under the New Act - Key Changes for Employers
Complete TDS section mapping and compliance checklist for April 2026.
Income Tax Act 2025Capital Gains: Section 45 is Now Section 67
STCG, LTCG, exemptions - complete mapping for investors.
Income Tax Act 2025NRI Taxation: Residential Status, TDS, DTAA
Everything NRIs need to know about the new act.
Income Tax Act 2025Startup Benefits: 80-IAC is Now Section 140
Tax holiday, angel tax, ESOP deferral - all continue.
Income Tax Act 2025ITR Filing: Section 139 is Now Section 263
Due dates, penalties, advance tax - step by step guide.
Income Tax Act 2025Section 80D Health Insurance: Now Section 126
Rs 25K-1L deduction limits, scenarios, and eligibility.
Income Tax Act 2025Section 80G Donations: Now Section 133
50% and 100% deduction categories, limits, and documentation.
Income Tax Act 2025Presumptive Taxation: 44AD is Now Section 58
For businesses up to Rs 2 crore and professionals up to Rs 50 lakh.
Income Tax Act 2025Section 10 Exemptions: Now Section 11
Gratuity, LTA, leave encashment, agricultural income - all mapped.
Income Tax Act 2025Set Off and Carry Forward of Losses
Sections 70-80 are now 108-122. 8-year carry forward rules.
Income Tax Act 2025Section 80E Education Loan: Now Section 129
No limit on deduction, 8-year window, interest only.
Income Tax Act 2025Section 80GG Rent Without HRA: Now Section 134
Rent deduction for those without HRA from employer.
Income Tax Act 2025Advance Tax: Sections 207-211 are Now 405-407
Due dates, percentages, and interest for non-payment.
Income Tax Act 2025IT Notice and Assessment: 143/147/148 Mapped
Scrutiny, reassessment, time limits, and how to respond.
Frequently Asked Questions
When does the new Income Tax Act 2025 come into effect?
The Income Tax Act 2025 takes effect from April 1, 2026, replacing the Income Tax Act 1961 which was in force for over 60 years.
Do I need to do anything differently for my tax filing?
For FY 2025-26 (AY 2026-27) onwards, all references will use the new section numbers. Your CA or tax software will handle the mapping. The fundamental tax rules remain largely the same - the act has been reorganised for clarity.
What happened to Section 80C deductions?
Section 80C deductions (PPF, ELSS, life insurance, etc.) continue under the new act with the same Rs 1.5 lakh limit. The section number has changed but the benefits remain. Use the search above to find the new section number.
Is HRA exemption still available under the new act?
Yes, HRA exemption continues under the new act for those opting for the old tax regime. The calculation method and limits remain the same. Use the search above to find the new section number.
Why was the old act replaced?
The 1961 Act had grown to 819 sections over 60+ years of amendments, making it complex and difficult to navigate. The 2025 Act consolidates these into 536 sections with clearer language and better organisation, without fundamentally changing the tax rules.
Will my old tax notices still be valid?
Existing notices, assessments, and proceedings under the 1961 Act will continue under the relevant transition provisions. The new act provides a mapping for all old sections to their new equivalents.
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