Income Tax Act, 2025 vs Income Tax Act, 1961 — What Actually Changed

From 1st April 2026, India moved from the 64-year-old Income Tax Act, 1961 to the Income Tax Act, 2025. If you’ve heard this described as a “complete overhaul,” take a breath — it isn’t. It’s best understood as the same law, reorganised into cleaner language and simpler numbering. Here’s what genuinely changed, and what didn’t.

What Changed

•             Section numbering: Nearly every section has a new number. Salary TDS moved from Section 192 to Section 392; most other TDS moved to Section 393; capital gains sections were renumbered (Section 112A became Section 198, for instance); deductions under Chapter VI-A (Section 80C, 80D, etc.) now sit under Section 123 and Schedule XV.

•             Terminology: “Previous Year” and “Assessment Year” are both replaced by a single term — “Tax Year.” So instead of “income earned in FY 2026-27, assessed in AY 2027-28,” you simply say “Tax Year 2026-27.”

•             Structure: The Act is shorter — around 536 sections compared to 800+ effective provisions (including sub-clauses) in the old Act — because scattered, repetitive provisions have been consolidated into single sections with tables (as seen with TDS under Section 393).

•             Forms: Nearly every return, certificate, and declaration form has a new number — Form 16 is now Form 130, Form 26Q is now Form 140, Form 15G/15H is now Form 121, and so on.

What Stayed the Same

•             Tax rates, slabs, and thresholds — largely unchanged. The new Act is a recodification exercise, not a rate revision.

•             Core concepts — capital gains, TDS, deductions, exemptions, presumptive taxation, and residential status rules all work exactly as before.

•             Due dates and compliance timelines — the quarterly, monthly, and annual filing rhythm continues unchanged.

Why the Government Did This

The 1961 Act had been amended by more than 65 Finance Acts, resulting in redundant provisos, cross-references, and explanations that made the law difficult even for professionals to navigate. The 2025 Act consolidates these into direct, tabular provisions — for example, all TDS rates and thresholds that were once spread across 30+ sections now live in tables under one section.

A Quick Illustration

Suppose a company pays a consultant ₹80,000 in professional fees in June 2026. Previously, this was Section 194J of the 1961 Act. Under the new Act, it’s Section 393(1), Table 1, Serial Number 6(iii). The rate (10%) and threshold (₹50,000) are unchanged — only the citation and the payment code used on the TDS return have changed.

Frequently Asked Questions

Q1. Do I need to refile my old tax returns because of the new Act? No. Returns for income earned up to 31st March 2026 continue to be governed by the Income Tax Act, 1961, using the old section references and forms.

Q2. Is my tax liability going to change because of this new law? For most taxpayers, no — the change is structural. Any change in your actual tax liability would come from a Budget/Finance Act rate change, not from the recodification itself.

Q3. Where can I find the mapping between old and new section numbers? The Income Tax Department has published official concordance tables mapping every old section to its new equivalent — your tax software or CA should already have these built in.

This overview reflects the position as of Tax Year 2026-27. For section-specific detail, see our dedicated guides on salary TDS, capital gains, and TDS return filing under the new Act.