The Income-tax Act, 2025 came into force on 1 April 2026. After more than six decades, the Income-tax Act, 1961 has been replaced. For most founders and finance heads, the question is simple. Do I need to panic, and what exactly do I need to do on Monday morning?
The short answer is no, you do not need to panic. The longer answer, which every CFO should understand before the next board meeting, is below.
Start with what has NOT changed
This is the most important paragraph in the whole explainer, so read it twice. Tax rates are unchanged. Slabs are unchanged. The old and new regimes both continue. Deductions and exemptions are largely preserved. The faceless assessment framework continues. Your PAN and TAN continue. Pending assessments and appeals under the 1961 Act continue under the old law until completion, protected by transitional provisions under Section 536 of the new Act.
If you expected a rewrite of how much tax you pay, that is not what this reform is. The Income-tax Act, 2025 is a structural and drafting overhaul, not a rate revision. The government was explicit about this in the Act’s objectives. The goal was simplification, not a higher tax burden.
What has actually changed?
- A single Tax Year replaces Previous Year and Assessment Year. This is the most visible change. For six decades Indian tax law asked you to distinguish between the year in which income was earned (Previous Year) and the year in which it was assessed (Assessment Year). That distinction is gone. There is now one Tax Year running 1 April to 31 March. Cleaner, faster to explain to a non-specialist, and far easier when you are onboarding foreign clients who never understood the old terminology anyway.
- Act is shorter and better organised. The 1961 Act had grown to more than 800 sections through 65 rounds of amendments and over 4,000 individual changes. The new Act has 536 sections across 23 chapters and 16 schedules. Provisions that were scattered across multiple chapters now sit together. Language has been simplified. Provisos and explanations have been integrated into the main text instead of hanging off sections like afterthoughts.
- The charging section has been simplified. Section 1 of the old Act was legendary for its density. The new charging section is shorter, cleaner, and easier to cite. For practitioners drafting opinions and notices, this alone saves real time.
- Tax authorities now have explicit powers over “virtual digital space.” Search and seizure powers have been extended to email servers, social media accounts, online trading and investment accounts, and any website storing asset ownership details. Authorities can override access codes during search proceedings. If your company still treats cloud drives and email as outside the scope of a tax search, update that assumption.
- Section numbering is completely different.The old Section 10 is not the new Section 10. Every cross-reference in your internal notes, SOPs, engagement letters, and client templates needs to be updated over the coming months. The Income Tax Department has published an old-to-new mapping utility. Use it.
What changed on 1 April 2026 and what did not
Here is the clean split. Income earned up to 31 March 2026 (FY 2025-26) is still governed by the Income-tax Act, 1961. The returns you file in 2026 for FY 2025-26 are old-Act returns. Income earned from 1 April 2026 onwards (FY 2026-27) is governed by the Income-tax Act, 2025. Section 536 is the bridge. It is a 22 sub-clause repeal and savings provision that keeps pending proceedings, rights, obligations, and liabilities under the old Act intact. Your closed assessments do not reopen. Your pending appeals continue. Nothing retroactive, nothing disruptive.
Your action list for April to June
One, brief your finance team and external CAs on the terminology change. “Previous Year” and “Assessment Year” are no longer correct. Start using “Tax Year” in internal MIS and external communication from this quarter.
Two, update engagement letters, SOPs, and client templates. Any document citing 1961 Act section numbers needs a review. This is a few hours of work, not weeks, but it needs to get done.
Three, refresh your transfer pricing and international tax documentation if you have cross-border transactions. The principles are unchanged but the section references are not, and an auditor or tax officer will expect your current-year documentation to cite the new Act correctly.
Four, review the virtual digital space provisions with your IT and data protection leads. Make sure your document retention, cloud access controls, and email archiving policies are defensible if you ever face a search. This is basic hygiene that most Indian companies have been postponing.
Five, do not touch FY 2025-26 filings. Those are old Act. Keep the two years mentally separated until the 1961 Act finally goes fully dormant.
The BGA view
At Bhanushali Global Advisors we see this reform the way most senior tax practitioners do. It is an administrative upgrade India needed badly. The 1961 Act had become unreadable. The new Act is cleaner, shorter, and more usable. The bad news, if there is any, is that every tax professional in India is now relearning section numbers for the next twelve months. The good news is that the substance of the law has been preserved, so your historic positions and planning hold.
If your finance team has not yet had a structured briefing on the transition, book one. Not because anything urgent is going wrong, but because quiet clarity in April saves noisy surprises in September.
