New Income Tax Act 2025:
What Changes for You from April 2026

The Law That Governed Your Taxes for 65 Years Just Changed

On 1 April 2026, India retired the Income Tax Act, 1961 — a law that had survived six decades of amendments, political changes, and economic overhauls. It was replaced by the Income Tax Act, 2025.

To be clear about the most important thing first: your tax rates did not change. Your slabs did not change. The amount you owe did not suddenly increase. The new Act is a structural overhaul, not a new tax burden.

What changed is the plumbing — the language, the numbering, the terminology, and how everything is organised. If you have ever tried to read a tax notice and felt completely lost, this new Act is designed specifically to fix that problem.

What Exactly Is the Income Tax Act 2025?

Think of the old 1961 Act as a house that was built in one style, then had dozens of extensions, extra rooms, and emergency repairs added over 65 years. Every government that came to power added something. The result was a maze of 819 sections with cross-references, provisos, sub-provisos, and explanations that even lawyers struggled to navigate.

The Income Tax Act 2025 is the same house, completely rebuilt in a clean, logical layout. It has 536 sections across 23 chapters. The tax policy itself — rates, deductions, and principles — is virtually identical. What changed is how clearly and consistently everything is expressed.

The Biggest Change: Goodbye "Assessment Year"

If you have filed an ITR even once, you know the confusion. You earned money in "Financial Year 2024-25" but filed tax for "Assessment Year 2025-26". Why two different years for the same income? Nobody could ever explain it satisfyingly.

The new Act fixes this with one clean concept: Tax Year.

Tax Year 2026-27 means: income earned from April 2026 to March 2027, filed and assessed in the same Tax Year 2026-27. One year. One label. No more confusion about which year you are paying tax for.

One important nuance: income earned up to 31 March 2026 is still under the old Act. So for the ITR you will file in July 2026 — which covers FY 2025-26 — you still use "AY 2026-27" language because that falls under the 1961 Act. The new Tax Year terminology kicks in from FY 2026-27 onwards.

What Stayed Exactly the Same

Before going further into the changes, it is worth being direct about what did not change — because this is what affects your wallet most directly:

• Tax slabs and rates: Unchanged. The new regime slabs from Budget 2025 (zero tax up to ₹4L, 5% from ₹4-8L, etc.) continue to apply.
• Zero tax up to ₹12L: The Section 87A rebate of ₹60,000 continues. Resident individuals with taxable income up to ₹12 lakh pay zero tax. For salaried individuals, adding ₹75,000 standard deduction makes the effective tax-free limit ₹12.75 lakh.
• Old regime deductions: Section 80C (₹1.5L), 80D (health insurance), HRA, home loan interest — all continue to exist, just with renumbered sections.
• New regime as default: The new tax regime remains the default. You must actively opt out to use the old regime (except for business income earners who follow a stricter process).
• PAN and TAN: Your existing PAN and TAN remain valid. No reapplication needed.
• ITR filing deadlines: 31 July for salaried individuals, 31 August for non-audit businesses, 31 October for audit cases.

Five Real Changes That Affect You

1. All TDS Under One Section (Section 393)

Under the old Act, TDS rules were spread across 30+ sections. Your salary TDS was Section 192. Bank interest TDS was 194A. Professional fees TDS was 194J. Rent TDS was 194I. Every transaction type had a different section, a different threshold, and often different rates.

The new Act consolidates all TDS provisions under a single Section 393 — a table format that lists every income type, its TDS rate, and its threshold in one place. For anyone who has ever had to look up "which section is TDS on this payment", this is a genuine relief.

2. Better TDS Threshold for Senior Citizens

Senior citizens who earn interest from bank FDs, RDs, and savings accounts get a meaningful upgrade. The TDS deduction threshold on interest income has been raised from ₹50,000 to ₹1 lakh per year. Banks will not deduct TDS unless the total interest in a year exceeds ₹1 lakh, which gives senior citizens more flexibility in managing their cash flow.

Additionally, Form 15G and Form 15H — the declarations used to prevent TDS when income is below the taxable limit — have been merged into a single Form 121. One form instead of two.

3. Virtual Digital Space Powers for Tax Authorities

This is a new addition with no equivalent in the 1961 Act. Tax authorities can now conduct search and seizure proceedings in your "virtual digital space" — which includes email accounts, social media profiles, online trading platforms, and websites. They can override access codes if required documents are not produced.

For the vast majority of salaried employees and small investors, this has zero practical impact. But if you hold significant undisclosed assets or have unexplained transactions in digital accounts, this is a notable expansion of enforcement powers.

4. Clearer Dispute Resolution for NRIs and Transfer Pricing Cases

The new Act adds a specific improvement for Non-Resident Indians and multinational companies involved in transfer pricing disputes: the Dispute Resolution Panel must now issue directions along with the points of determination and reasons. This forces clearer reasoning in tax orders, reducing arbitrary assessments.

5. Simpler Language Throughout

This sounds minor but is actually significant for anyone who has ever tried to read a tax notice or understand a deduction rule. The old Act used deeply nested legal language: "Provided that nothing contained in sub-section (a) of clause (ii) of proviso (B) to section..." The new Act uses plain, tabular formats with numbered columns and rows — the kind of language a reasonably educated person can actually parse.

New Regime Tax Slabs for Tax Year 2026-27

These are the slabs that apply to income earned from 1 April 2026 under the new (default) regime. They are unchanged from Budget 2025:

Note: Add 4% Health and Education Cess on total tax. Surcharge applies on income above ₹50 lakh. Section 87A rebate makes tax zero for income up to ₹12 lakh.

Real Example: Arjun's Tax Calculation for Tax Year 2026-27

Arjun is a software engineer in Bengaluru earning ₹15 lakh per year (CTC). He has no home loan, uses the new tax regime, and has not opted for any deductions under Chapter VIA. Here is his exact tax calculation:

Arjun pays ₹97,500 in tax on ₹15 lakh income — an effective tax rate of just 6.5% on his gross salary. Now compare if Arjun had significant deductions:

If he had claimed ₹1.5L under 80C + ₹25,000 under 80D + HRA of ₹1.8L under the old regime: his taxable income would be ₹10.7L, and tax would be around ₹94,500 — marginally lower. For most salaried employees with modest deductions, the new regime is now comparable or better.

Income Tax Act 1961 vs 2025: At a Glance

Below is a side-by-side summary of the structural changes. Remember — none of these change your tax amount; they change how the law is written and administered:

What Should You Actually Do Right Now?

For most salaried employees and small investors, the honest answer is: almost nothing changes in practice for the filing you do this year.

Here is a quick checklist:

• For FY 2025-26 ITR (due July 2026): File as usual under the old 1961 Act. Select "AY 2026-27" on the portal. Same forms, same deductions.
• For Tax Year 2026-27 onwards: The portal will update forms with the new Tax Year terminology. No action needed from you — just follow the updated forms.
• Check your Form 26AS: For periods before April 2026, it uses Assessment Year. For periods after, it will transition to Tax Year labelling. Make sure your TDS credits reconcile correctly.
• Senior citizens: Review whether Form 15H (now Form 121) submission is needed based on your bank interest. The new ₹1 lakh threshold means fewer people need to submit it.
• Business owners: If you had mapped your accounting system to old section numbers, update references. Section 192 (salary TDS) is now part of Section 393's table. Your tax software provider should release updates.