For sixty-five years, the Income-tax Act, 1961 was the grammar of Indian taxation. Every refund, every notice, every late-night reconciliation traced back to it. And like any language spoken for that long, it grew thick with dialect — over eight hundred sections, thousands of provisos, explanations stacked upon explanations, until it became something only specialists could read with confidence.
On 1 April 2026, it was retired. In its place stands the Income-tax Act, 2025 — 536 sections across 23 chapters, almost half the length of what it replaced. It is worth being clear about what this is and is not. It is not a new tax. Rates are unchanged, the slabs are unchanged, the deductions you know by their numbers survive under new ones. It is, instead, a re-codification: the same policy, told in plainer language.
The change most people will actually feel is a small one, and a human one. Two phrases that every taxpayer half-understood — “Previous Year” and “Assessment Year” — have been folded into a single idea, the “Tax Year.” A generation of taxpayers learned to nod along to the distinction without quite trusting it. From this year, they no longer have to.
A law is a conversation between a state and its citizens. When the conversation becomes unreadable, something is lost.
What stays the same
Almost everything that determines what you pay. The slabs and rates, the surcharge and cess, the deductions of Chapter VI-A, the capital-gains rates, the new regime as the default — all carried forward. If your tax outgo barely moves this year, that is by design. The Act was written to change how the law reads, not how much it costs.
What changes for those who file
For practitioners, the work is real. Virtually every section has been renumbered. The 1962 Rules give way to the Rules of 2026. Tax deducted at source has been reorganised — salary withholding now lives in one section, almost everything else consolidated into another, with the familiar 194-series surviving only as sub-provisions. Returns filed against the old codes are simply turned away. None of this is difficult; all of it must be done correctly, from the first filing.
It is tempting to treat a re-codification as housekeeping — the same furniture, rearranged. But legibility is not cosmetic. When a citizen can read the rule that governs them, the relationship changes; compliance stops being an act of faith in one's advisor and becomes something closer to understanding. That is the quiet ambition behind the 2025 Act, and whether it succeeds will be measured not in sections but in how many people, a decade from now, can read their own tax position without flinching.
For our clients, then, the headline is reassuring: little changes in what you owe. For us, much changes in how we cite, file and advise. Both, we think, are worth understanding — and both are why we wrote this.