India’s 64-year-old tax law has retired. Here’s what the new Income-Tax Act means for your business.
On 1 April 2026, the Income-tax Act of 1961 was formally retired after more than six decades of service, and the Income-Tax Act 2025 took its place. If you run a business in India, the first thing to know is also the most reassuring: your tax rates have not changed. This is a structural reform, not a rate reform. The same income is taxed at the same rates, and the same deductions remain available.
What has changed is almost everything around those rates. The old law had grown, over sixty-four years and thousands of amendments, into something close to unreadable — well over eight hundred sections layered with provisos and explanations. The new Act rebuilds the same tax policy into a leaner structure of roughly five hundred and thirty-six sections, written in plainer language and designed for a digital economy.
The one change you’ll notice first
The single change you will notice most is the disappearance of two familiar terms. “Assessment Year” and “Previous Year” are gone, replaced by one concept: the Tax Year, defined simply as the financial year from 1 April to 31 March in which income is earned. This ends a long-running source of confusion, but it also means that every reference in your internal records, your accounting software, and your conversations with your accountant needs to migrate to the new vocabulary.
Three things worth doing now
First, confirm that your accounting and payroll software vendors have updated their systems to reference the new section numbers, because much of the familiar numbering has changed. Second, if you have any pending assessment or litigation from earlier years, note that it stays under the old 1961 Act — the new law does not reach backwards. Third, use the official section-mapping utility published by the Income Tax Department to translate any section number you rely on into its new equivalent.
The reform is meant to make compliance easier over time. The transition, handled well, is a one-time exercise rather than an ongoing burden.
This article is current as of publication. Indian tax rules continue to evolve; verify specific figures against the Income Tax Department (incometax.gov.in) before acting.