Quick Summary: India’s new Income Tax Act 2025 came into force on April 1, 2026, replacing the Income Tax Act 1961 that had been in place for over six decades. The Act does not change tax rates or slabs — instead, it completely restructures, simplifies and modernises the tax law. Here is everything you need to know, whether you are a salaried employee, a business owner, or a startup founder.

What Is the Income Tax Act 2025 and Why Was It Introduced?

India’s original Income Tax Act was enacted in 1961. Over the next six decades, it was amended hundreds of times — new sections were inserted, old ones were patched, cross-references multiplied, and legal language grew so dense that even experienced tax professionals needed hours to interpret a single provision. By 2024, the Act had ballooned to over 700 sections spread across thousands of pages.

The government recognised that this complexity was hurting compliance. Honest taxpayers were making genuine mistakes simply because the law was difficult to read. Litigation was rising because the same provision could be interpreted in multiple ways. Small business owners and salaried individuals were spending unnecessary time, money, and mental energy just trying to understand their tax obligations.

The Income Tax Act 2025 was introduced in the Lok Sabha on February 13, 2025, to solve this exact problem. Its core purpose is simplification, not overhaul. The new Act reorganises the entire direct tax framework into 536 sections across 23 clearly defined chapters, cutting down from the earlier sprawling structure while retaining most of the substantive law intact. Tax rates remain unchanged. The objective is to make the law easier to read, easier to comply with, and easier to enforce.

The Act came into force on April 1, 2026 (Tax Year 2026-27). For FY 2025-26, the old Income Tax Act 1961 still applies for ITR filing purposes.

Key Structural Changes from the Old Income Tax Act, 1961

Many taxpayers fear that the new Act brings sweeping changes to how much tax they pay. It does not. What it does change is the architecture of the law — and some of these structural changes have very practical consequences.

1. The “Tax Year” Concept Replaces Assessment Year

This is the most visible change for everyday taxpayers. Under the old system, you earned income in a “Previous Year” (say, FY 2024-25) and filed your return in the “Assessment Year” (AY 2025-26). This dual-year concept confused millions of taxpayers who could never quite remember which year their return belonged to.

Under the Income Tax Act 2025, both concepts are merged into a single Tax Year. Income earned in Tax Year 2026-27 (April 2026 to March 2027) is assessed and filed in Tax Year 2027-28. The Tax Year equals the Financial Year. This aligns India with global tax norms and removes one of the most common sources of confusion in Indian taxation.

2. Sections Reduced and Consolidated

The number of sections has been cut from over 700 to 536. Redundant provisions have been removed. Overlapping clauses have been merged. More importantly, the new Act uses plain, direct language instead of complex legal phrasing with nested sub-sections and cross-references.

For example, all TDS provisions — which were previously scattered across sections 192, 193, 194, 194A, 194B, 194C, 194D, and dozens more — are now consolidated under three sections: 392, 393, and 394 in a tabular format with serial numbers and numeric codes. A deductor no longer needs to search through dozens of sections to find the applicable TDS rate.

3. Schedules Replace Complex Provisions

Many deductions and exemptions that were embedded deep within sections have been pulled out and placed in easy-to-read Schedules at the back of the Act. For instance, deductions previously under Section 80C of the old Act are now referenced as Schedule XV read with Section 123 of the new Act. This makes it far easier to locate and verify all available deductions in one place.

4. Faceless Assessment and Digital-First Framework

The Act formally codifies the faceless assessment regime, which was introduced as a temporary measure under the old Act. It also expands the government’s power to implement faceless mechanisms for inquiry, valuation, revision of orders, and recovery of tax — reducing scope for personal discretion and corruption in tax administration.

Additionally, the new Act empowers income tax authorities to enter and search virtual digital spaces — a direct acknowledgement of the digital economy, covering cloud storage, email, and online financial accounts.

New Income Tax Slabs Under the Act (Effective Tax Year 2026-27)

It is important to be clear here: the Income Tax Act 2025 itself does not prescribe new tax rates. Tax rates are determined each year through the Union Budget. The slabs effective for Tax Year 2026-27 — the first year under the new Act — are as follows under the new tax regime:

Key points on slabs:

• The basic exemption limit under the new regime has been raised to ₹4 lakh (from ₹3 lakh earlier).
• The tax rebate under Section 87A (now referenced under the new Act’s equivalent provision) ensures zero tax liability for income up to ₹12 lakh under the new regime.
• For salaried individuals, the standard deduction of ₹75,000 pushes the effective tax-free limit to ₹12.75 lakh.
• A taxpayer earning ₹20 lakh now pays approximately ₹1,85,000 (plus 4% cess) — a saving of around ₹93,000 compared to the older slab structure.
• The old tax regime with deductions (80C, HRA, home loan interest, etc.) continues to remain available for those who opt for it.

Changes in Deductions, Exemptions, and TDS Rules

Deductions and Exemptions

The substantive deductions available to taxpayers remain largely intact under the new Act, but their section numbers have changed. Employers, employees, and businesses must update their references accordingly:

• Section 80C equivalent → Schedule XV read with Section 123 (investments in PPF, ELSS, life insurance, NSC, home loan principal, etc.)
• HRA exemption → Now consolidated under the new Act’s salary chapter
• Standard deduction → Continues at ₹75,000 for salaried taxpayers
• Senior citizen deduction for interest income → Increased from ₹50,000 to ₹1,00,000 under the new Act

For businesses and professionals under the old regime, deductions for depreciation, business expenses, and Chapter VI-A investments continue without substantive change — only the section numbering has shifted.

TDS Changes — Critical for Businesses

This is where businesses, payroll teams, and accountants face the most immediate practical impact. From April 1, 2026:

• All old TDS section numbers are invalid for new transactions. Using Section 194C, 194J, or 194I in a TDS return filed for Tax Year 2026-27 will generate system-level validation errors on the income tax portal.
• The new TDS framework works through Sections 392, 393, and 394, with all payment types listed in a single table with numeric codes (1001–1067).
• Form 24Q (quarterly salary TDS return) is replaced by Form 138.
• Form 16 (salary TDS certificate issued to employees) is replaced by Form 130.
• TCS rates on scrap, alcoholic liquor, coal, LRS remittances for education and medical purposes, and overseas tour packages are now a flat 2%, removing earlier higher rates and threshold-based slabs.
• Manpower supply and labour contract services are now explicitly included under the new TDS provision equivalent to old Section 194C, removing the ambiguity that caused many disputes earlier.

If your accounting software (Tally, Zoho Books, QuickBooks, SAP) has not been updated to reflect new section codes and form numbers, your TDS returns for FY 2026-27 will be technically non-compliant and may attract correction notices.

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Impact on Salaried Employees, Freelancers, and Businesses

Salaried Employees

For most salaried individuals, the day-to-day experience of taxation changes very little. Your employer will continue to deduct TDS, you will continue to file an ITR, and your investment declarations will continue to work. However, there are two immediate steps you need to take:

1. When submitting your investment declaration for Tax Year 2026-27, reference the new Act’s section numbers — your HR or payroll team should have updated the format.
2. Your Form 16 at year-end will now be called Form 130 and will use the new Act’s section references. Do not be alarmed — it contains the same TDS information as before.

Freelancers and Self-Employed Professionals

If you receive professional fees on which TDS is deducted (previously under Section 194J), the deductor (client company) is now required to use the new Section 393 equivalent code. Make sure the TDS shown in your AIS reflects this accurately. If you see discrepancies, it may be because the deductor’s software has not been updated — which you need to flag promptly, as it affects your advance tax calculation and refund claims.

Business Owners and Companies

The transition has the highest immediate impact on businesses, since they are both taxpayers and deductors. Key action items:

• Update ERP/accounting software to new section codes before processing April 2026 payments.
• Retrain payroll and accounts teams on new TDS provisions and form numbers.
• Restart TDS computation for all employees from April 1, 2026, considering their new Tax Year income and investment declarations.
• Verify vendor TDS codes — if you deduct TDS on contractor payments, professional fees, rent, or interest, every payment code must be updated.
• For businesses with multiple entities or high transaction volumes, even one wrong section code can trigger multiple correction notices and reconciliation work.

New Compliance Requirements and Deadlines

The compliance calendar under the Income Tax Act 2025 largely mirrors the old Act, but with updated form numbers and new terminology:

Important clarification on timelines: For income earned in FY 2025-26 (April 2025 to March 2026), the old Income Tax Act 1961 still applies. ITR for AY 2026-27 (income of FY 2025-26) will be filed under old Act provisions. The new Act’s ITR forms and references apply from Tax Year 2026-27 onwards — i.e., income earned from April 1, 2026.

For TDS, however, any payment made on or after April 1, 2026 must use new Act section codes — even if the contract or invoice relates to the previous financial year.

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How Rudra Capital Helps You Navigate the Income Tax Act 2025

The Income Tax Act 2025 is a major transition, and mistakes made in the first year of compliance can result in validation errors, demand notices, and penalties that take months to resolve. At Rudra Capital, our team of experienced CAs and tax professionals has been trained on every aspect of the new Act and is ready to help you transition smoothly.

Here is how we help:

• ITR Filing under the new Act — We handle your income tax return filing using the correct new Act provisions, ensuring accurate section references, deduction claims, and regime selection.
• TDS Compliance for Businesses — We update your TDS workings, software codes, and quarterly return filing to comply with new sections 392/393/394 and new form numbers from Tax Year 2026-27.
• Payroll and Employer TDS — We restart your salary TDS computation for Tax Year 2026-27 using new regime slabs and new form references.
• Tax Planning and Advisory — With slabs updated and new deduction schedules in place, we help you choose the right regime and structure your investments for maximum tax savings.
• Notice Resolution — If you receive a 143(1) intimation, demand notice, or TDS mismatch notice under the new Act, we handle the response and resolution for you.

Book a free strategy call today at +91-9953572838 or visit https://rudracap.com/contact to get started.

FAQs – Income Tax Act, 2025

Q1: When does the Income Tax Act 2025 come into effect?
The Act came into force on April 1, 2026. For income earned in FY 2025-26, the old Income Tax Act 1961 still applies. The new Act governs income earned from Tax Year 2026-27 onwards.

Q2: Does the new Act change tax rates or slabs?
No. Tax rates and slabs are determined annually through the Union Budget and remain unchanged by the Act itself. The Act only restructures how the law is organised and written.

Q3: Do I need to refile old ITRs under the new Act?
No. Past assessments, pending appeals, and refunds for FY 2025-26 and earlier continue under the old Act provisions. Only new transactions from April 1, 2026 fall under the new Act.

Q4: My Section 80C investments — are they still valid?
Yes. The deductions that were under Section 80C are now referenced under Schedule XV read with Section 123 of the new Act. The investments themselves (PPF, ELSS, LIC premium, home loan principal) continue to qualify for the same deduction limits under the old regime.

Q5: What happens if I use the old TDS section numbers after April 1, 2026?
Using old section numbers like 194C or 194J for payments made on or after April 1, 2026 will generate validation errors on the income tax portal when you file the quarterly TDS return. You will need to submit a correction statement, which causes delays and invites compliance risk. Update your software before processing the first payment of Tax Year 2026-27.

Q6: Can I switch between new and old tax regime under the new Act?
Yes. Salaried employees can switch regime every year at the time of ITR filing. Business owners and self-employed individuals can switch only once from the old to the new regime.

Q7: What is the difference between the old “Assessment Year” and the new “Tax Year”?
Under the old Act, income earned in FY 2024-25 was assessed in AY 2025-26. Under the new Act, income earned in Tax Year 2026-27 is filed and assessed in Tax Year 2027-28. It is a terminology change designed to eliminate confusion — the Tax Year always equals the Financial Year.

Written by the Rudra Capital Editorial Team and reviewed by qualified Chartered Accountants specializing in Income Tax, TDS compliance, GST advisory, startup compliance, and business taxation in India.

Need help with ITR filing, TDS compliance, or understanding how the Income Tax Act 2025 affects your business? Rudra Capital’s experts are available 24×7. Call us at +91-9953572838 or book a free strategy call here.