Income Tax Act 2025 vs 1961: What Actually Changed for Salaried Professionals

Every salaried professional in India is asking the same question right now: what exactly changed with the Income Tax Act 2025?

The honest answer is this: the tax rates did not change. The slabs did not change. What changed is the structure, section numbers, and certain compliance procedures. As a Finance Educator who has worked with professionals across income brackets for 7 years, here is a clear breakdown.

WHAT STAYED THE SAME

The new tax regime and old tax regime both continue. Tax rates under both are identical. Standard deduction of Rs. 75,000 continues. Section 80C deduction limit of Rs. 1,50,000 continues (now called Section 123). Section 80D health insurance deduction continues (now Section 124). HRA exemption formula is unchanged. Five heads of income unchanged.

THE 5 MOST IMPORTANT CHANGES

1. Tax Year Replaces Financial Year and Assessment Year: The confusing dual system of FY and AY is gone. Income Tax Act 2025 uses a single term: Tax Year. Income earned April 2026 to March 2027 is Tax Year 2026-27. Simple.
2. Section Numbers Changed: Section 80C is now Section 123. Section 80D is now Section 124. Section 192 TDS on salary is now Section 392. For July 2026 ITR filing (FY 2025-26), still use old section numbers. New numbers apply from July 2027 filing onwards.
3. TDS Consolidated from 60+ Sections to 3: All TDS provisions now fall under three sections: Section 392 (salary TDS), Section 393 (non-salary TDS), Section 394 (TCS). Rates unchanged. Structure cleaner.
4. Income Tax Portal Has Two Tabs Tab 1: I ncome Tax Act 1961 - use this for July 2026 filing (FY 2025-26) Tab 2: Income Tax Act 2025 - use this from July 2027 filing onwards Using the wrong tab invalidates your return. This is the single most important practical change for the July 2026 filing season.
5. Updated Return Window Extended to 4 Years: Earlier you could file ITR-U within 2 years. Now it is 4 years. More time to correct mistakes, but higher additional tax if you file very late (up to 60% extra).

WHAT THIS MEANS FOR YOUR JULY 2026 ITR

Your ITR for FY 2025-26 due July 31, 2026 uses the Income Tax Act 1961 rules entirely. Old section numbers, old forms (Form 16, Form 26AS), Tab 1 on portal. The new Act does not affect this filing at all.

Complete practical breakdown of all changes, including the full section number mapping table and form changes is as follows

On August 21, 2025, the President of India gave assent to the Income Tax Act 2025. From April 1, 2026, this new law replaced the Income Tax Act 1961, which had governed India’s direct tax system for over six decades.

Since then, one question has dominated conversations among salaried professionals, freelancers, and small business owners: what exactly changed?

The honest answer, which most articles do not give clearly, is this: the tax rates did not change. The tax slabs did not change. The five heads of income did not change. What changed is the structure, language, section numbers, and certain compliance procedures.

With 7 years of experience in income tax education, I have seen how confusion about new tax laws leads people to make filing mistakes or miss legitimate deductions. This article cuts through the noise and tells you exactly what is different, what is the same, and what it means for your taxes in FY 2026-27 and beyond.

Important for July 2026 ITR Filing: Your ITR for FY 2025-26 (due July 31, 2026) is governed by the Income Tax Act 1961, not the new Act 2025. Old section numbers, old forms, old rules apply for this filing. The new Act applies only from Tax Year 2026-27 onwards. Select Tab 1 on the income tax portal for your July 2026 filing.

The Big Picture: Why Was the Act 1961 Replaced?

The Income Tax Act 1961 started with a manageable structure. Over 64 years, it was amended more than 4,000 times through Finance Bills, standalone amendment acts, explanations, provisos, and notifications. By 2025, the Act had become a labyrinth. Simple questions required navigating through multiple cross-references, provisos to provisos, and explanations that themselves needed explaining.

The Income Tax Act 2025 does not introduce a new philosophy of taxation. It reorganizes, simplifies, and restructures what already existed. The stated goals were:

• Reduce complexity through clearer language
• Eliminate redundant and obsolete provisions
• Reduce litigation through precision in drafting
• Align with digital economy and modern compliance
• Make tax law accessible to ordinary taxpayers

What Stayed Exactly the Same

This is the most important thing to understand before worrying about what changed.

• Tax rates and slabs:  Identical under both Acts. The new tax regime and old tax regime rates are unchanged.
• Five heads of income:  Salaries, House Property, Profits and Gains from Business or Profession, Capital Gains, Income from Other Sources remain exactly the same.
• Deduction limits:  Section 80C limit of Rs. 1,50,000 (now Section 123), Section 80D limits (now Section 124), HRA exemption formula, standard deduction, all unchanged.
• New tax regime vs old tax regime:  Both continue to exist. New regime remains the default. Rules for switching remain the same.
• Penalties and offences:  Same structure, same amounts.
• Pending assessments and litigation:  All proceedings related to income earned before April 1, 2026, continue under the Income Tax Act 1961. The new Act does not affect old disputes.

What Changed: The 10 Most Important Differences

1. Tax Year Replaces Financial Year and Assessment Year

Under the Income Tax Act 1961, every Indian taxpayer dealt with two confusing terms: Financial Year (when income is earned) and Assessment Year (when it is taxed and filed). This created constant confusion, especially when filing returns or responding to notices that referenced AY numbers.

The Income Tax Act 2025 eliminates both terms and replaces them with a single concept:  Tax Year .

For practical purposes: Income earned April 2026 to March 2027 is Tax Year 2026-27. The return for this income will be filed by July 31, 2027. Simple, single reference.

Impact on you:  Minimal for now. Tax portal, Form 130 (new Form 16), and ITR forms will use new terminology from Tax Year 2026-27 onwards. Your July 2026 filing for FY 2025-26 still uses old terminology.

2. Sections Reduced and Renumbered

Sections like 80C, 80D, 80E with alphabetical suffixes no longer exist. Everything is sequentially numbered. This is why 80C is now Section 123, 80D is now Section 124, and Section 192 (TDS on salary) is now Section 392.

3. Key Section Number Changes: Complete Mapping

Important:  For your July 2026 ITR filing (FY 2025-26), use old section numbers. New section numbers apply only from Tax Year 2026-27 returns filed in 2027.

4. TDS Consolidated from 60+ Sections to 3

One of the most significant structural changes. Under the 1961 Act, TDS provisions spanned from Section 192 to Section 194T, more than 60 separate sections, each with different formats, thresholds, and exceptions. Practitioners had to cross-reference constantly.

Under the 2025 Act, all TDS provisions are consolidated into three sections:

• Section 392:  TDS on salary (replaces old Section 192)
• Section 393:  TDS on all non-salary income (replaces Sections 193 to 194T)
• Section 394:  TCS (Tax Collected at Source)

The rates and thresholds remain unchanged. Only the structure is cleaner. 

5. Form Numbers Changed

Your June 2026 Form 16 for FY 2025-26 will still be called Form 16. The rename to Form 130 starts from June 2027.

6. Income Tax Portal Has Two Tabs Now

The income tax portal (incometax.gov.in) now shows two tabs when you log in:

• Tab 1: Income Tax Act, 1961  for all filings related to FY 2025-26 and earlier years
• Tab 2: Income Tax Act, 2025  for Tax Year 2026-27 and onwards

For your July 2026 ITR filing (for income earned April 2025 to March 2026), always use Tab 1. Any pending assessments, old notices, or previous year corrections also use Tab 1. Using Tab 2 for old filings is an error.

7. Exemptions Moved to Schedules

Under the 1961 Act, exemptions were listed under Section 10 with dozens of sub-clauses: Section 10(13A) for HRA, Section 10(5) for LTA, Section 10(10) for gratuity, and so on.

Under the 2025 Act, most exemptions have been moved to dedicated Schedules at the end of the Act. The exemption amounts and conditions remain identical. Only the location within the Act changed.

8. Cryptocurrency Now Formally Defined

The 1961 Act added Virtual Digital Assets (VDAs) taxation through amendment but without a comprehensive definition. The 2025 Act formally includes cryptocurrencies, NFTs, and other digital assets in the definition of VDAs and clarifies their tax treatment as capital assets. The tax rate (30% on gains) remains unchanged. The formal inclusion reduces ambiguity for taxpayers with crypto holdings.

9. Digital Compliance Strengthened

The 2025 Act explicitly enables tax authorities wider digital access during search operations. In cases of investigation, taxpayers may be required to provide access to emails, cloud storage, social media accounts, or digital trading platforms if relevant to the investigation. This formalizes what was already happening in practice but creates a clearer legal basis.

Additionally, businesses maintaining electronic books of account must ensure they are accessible from India at all times and that backup servers are physically located in India.

10. Updated Return Window Extended to 4 Years

Under the 1961 Act, updated returns (ITR-U) could be filed within 24 months (2 years) from the end of the assessment year.

Under the 2025 Act, this window has been extended to  48 months (4 years)  from the end of the relevant tax year. However, additional tax at increasing rates (25% to 60%) applies depending on how late the updated return is filed.

What This Means for Your Day-to-Day Tax Planning

For Salaried Professionals

Your practical tax planning changes very little. The deductions you claim (Section 80C, 80D, HRA, standard deduction), the regime you choose (old or new), and the tax you pay are all unchanged. The only thing that changes from April 2026 is:

• Your employer uses new form numbers in payroll (Form 124 instead of Form 12BB)
• Your salary slip may reference Section 392 instead of Section 192 for TDS
• Your Form 26AS becomes Form 168 in the portal

For Freelancers and Consultants

Section 44ADA (presumptive taxation for professionals) is now Section 58. The limits, eligibility, and calculation method are unchanged. Your ITR form, advance tax deadline, and the 50% presumptive deduction all remain the same.

GST is completely separate from the Income Tax Act and is not affected by this change. For income tax purposes, your tax rates, deductions, and compliance requirements remain unchanged. The main practical change is updating your accounting software to reflect new section numbers.

Transition Timeline: Which Law Applies When

Frequently Asked Questions

Did the Income Tax Act 2025 change tax rates?

No. Tax slabs and rates under both old and new regimes are identical to what they were before. The Income Tax Act 2025 is a structural reorganization, not a tax rate change.

Does the new Act affect my FY 2025-26 ITR filing in July 2026?

No. Your July 2026 ITR for FY 2025-26 is governed entirely by the Income Tax Act 1961. Use Tab 1 on the portal, old form numbers, and old section references.

When does the Income Tax Act 2025 start affecting me?

From Tax Year 2026-27 (income earned April 1, 2026 onwards). The ITR for this period will be filed by July 31, 2027, using new forms and section numbers.

Is Section 80C deduction still available?

Yes. The deduction limit (Rs. 1,50,000) and eligible investments are unchanged. The section is now called Section 123 instead of Section 80C under the new Act. For FY 2025-26 filing, still refer to Section 80C. 

What happened to old assessments and disputes?

All pending assessments, appeals, and proceedings related to income before April 1, 2026, continue under the Income Tax Act 1961. The 2025 Act does not affect old disputes.

Do I need to learn all the new section numbers?

Not immediately. For FY 2025-26 filing (July 2026), old section numbers apply. From FY 2026-27 (July 2027 filing), new section numbers will be used. The income tax portal also has a comparison tool that maps old sections to new ones.

Is HRA still available under the new Act?

Yes. HRA exemption continues under the old tax regime under the new Act. The formula (minimum of 3 conditions) is unchanged. The only update is that 8 cities now qualify for 50% exemption instead of 4. 

The Bottom Line

The Income Tax Act 2025 is a significant legislative milestone but a modest practical change for most taxpayers. The restructuring is overdue and the simplified language will eventually benefit everyone. But your tax liability, your deductions, your filing process, and your compliance requirements are virtually unchanged for now.

The most important things to remember:

• July 2026 ITR filing: Use Act 1961, Tab 1, old forms
• From July 2027 onwards: Use Act 2025, Tab 2, new forms
• Tax rates: Same under both Acts
• Deductions: Same amounts, new section numbers
• Section 80C is now Section 123. Section 80D is now Section 124. The benefits are identical.