The Income-tax Act, 2025 Is Now in Force: What It Means for Your Business
On 1 April 2026, India's Income-tax Act, 1961 - the law that has governed direct taxation for more than six decades - was formally replaced by the Income-tax Act, 2025. If you've filed a return, deducted TDS, or claimed a deduction under Section 80C in the past few months, you've likely already interacted with the new law without fully realising how much has changed under the hood. For businesses, professionals, and individual taxpayers, this is more than a renumbering exercise - it changes the vocabulary, structure, and several compliance touchpoints you rely on every year. Here is a plain-language breakdown of what actually changed, verified against the Income Tax Department's own transition materials and press releases, and what it means for you going into Tax Year 2026-27.
A New Law, Not New Taxes
It helps to start with what did not change: the underlying tax policy. Tax rates and slabs, set annually through the Finance Act, and the broad principles of how income is computed remain the same. What changed is the presentation - the Act has been rewritten in simpler language, reorganised into a cleaner structure, and had its cross-references cleaned up to reduce the litigation that arose from decades of amendments layered onto the 1961 Act. The Bill was passed by Parliament on 12 August 2025, received Presidential assent on 21 August 2025, and came into force on 1 April 2026, with the Income-tax Rules, 2026 notified on 20 March 2026 to support it.
"Tax Year" Replaces "Previous Year" and "Assessment Year"
The most visible change for anyone who has ever filled out a tax form: the confusing dual system of 'Previous Year' (when you earned the income) and 'Assessment Year' (when you file and pay tax on it) has been replaced with a single, unified 'Tax Year'. What would have been called Assessment Year 2027-28 under the old system is now simply Tax Year 2026-27 - the year in which the income is earned. This alone should reduce a common source of confusion for salaried taxpayers and small business owners who often mixed up which year's income a particular ITR form referred to.
A Leaner, More Navigable Act
Structurally, the Act has been significantly compressed. Independent legal and tax-advisory analyses comparing the two laws report that the 1961 Act's 700-plus sections, spread unevenly across its chapters after decades of insertions, have been consolidated into roughly 536 sections across 23 chapters, with total page count trimmed from around 823 to 622. Provisions that were previously buried in Section 10's many sub-clauses - exemptions such as HRA - have been moved out of the main body of the Act into Schedule II, so where you once cited 'Section 10(13A)' for HRA, you will now point to the corresponding Schedule II entry.
Renumbered Provisions You'll Actually Use
TDS provisions, previously scattered across Sections 192 to 194T, are now consolidated under Section 393.
Tax audit, previously governed by Section 44AB, is now covered by Section 63. Turnover thresholds are unchanged: audit is generally required above Rs 1 crore turnover, with the Rs 10 crore exemption continuing where cash transactions stay under 5% of total receipts and payments, and Rs 50 lakh gross receipts for professionals.
Section 80C deductions move to Section 123, with the Rs 1.5 lakh limit and eligible investments (PPF, ELSS, life insurance premium, etc.) unchanged.
The standard deduction under the new tax regime, earlier tied to Section 115BAC, is now addressed under Section 202.
Capital gains, charged earlier under Section 45, are now charged under Section 67, with computation mechanics spread across Sections 196-198.
What This Means for You, Practically
None of this changes how much tax you owe. But it does change how your CA, your accounting software, and your own records should refer to these provisions going forward - and getting the citations right matters when you are filing returns, responding to notices, or claiming a deduction. A few practical steps worth taking now:
Update saved templates, board resolutions, and standard client communications that cite old section numbers (80C, 44AB, 10(13A)) to their 2025 Act equivalents.
If your business crosses the audit threshold, confirm with your CA whether your Tax Year 2026-27 audit report needs to reference Section 63 rather than Section 44AB.
Check that your payroll and TDS software reflects Section 393 for deduction and reporting purposes.
Do not assume every provision kept its old logic just because the number changed - a few provisions were also clarified during the rewrite, so a quick professional review is worth it rather than assuming a like-for-like renumbering everywhere.
The Bottom Line
The Income-tax Act, 2025 is, by design, meant to be a modernisation rather than a revolution - the government has been explicit that the goal was simpler language and structure, not a change in tax policy. But 'no change in tax policy' does not mean 'no change in compliance.' For businesses and individuals still getting used to the new section numbers, the Tax Year terminology, and the shifted location of familiar exemptions, this transition period is exactly the time to get a professional review of how the new Act applies to your specific filings.
If you would like help mapping your business's compliance obligations - TDS, tax audit, deductions, or return filing - to the Income-tax Act, 2025, CA Samir K. Mehta & Associates can walk you through exactly what has changed for your situation. Get in touch with our team to make sure your Tax Year 2026-27 filings are fully aligned with the new law.
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