The transition from the legacy Income-tax Act of 1961 to the Income-tax Act, 2025 marks the most significant shift in Indian fiscal policy in over six decades. At the heart of this new legislative framework lies Section 4. Often referred to as the “Charging Section,” Section 4 is the legal engine that empowers the Central Government to levy and collect tax.
Section 4 is the gatekeeper: if a receipt does not fall within the parameters of this section, it cannot be taxed as income, regardless of how large the amount may be.
1. The Statutory Framework of Section 4
Section 4 provides the legal mandate to tax income. It establishes that income tax is not just a voluntary contribution but a compulsory levy authorized by Central legislation.
Key Sub-clauses of Section 4:
Section 4(1): Basis of Charge
Income tax for any tax year shall be charged at the rates enacted by a Central Act (usually the annual Finance Act) for that specific year.
Section 4(2): Taxable Base
The tax is levied on the “Total Income” of the tax year of every person. This reinforces that the tax is a comprehensive annual levy rather than a transactional one.
Section 4(3): Inclusion of Additional Taxes
The term “income-tax” is defined broadly to include any surcharge, cess, or additional income tax (like the tax on updated returns) levied under the Act.
Section 4(4): Deviations from the Tax Year
While the general rule is to tax annual income, this sub-clause allows the Act to charge tax on periods other than the standard tax year (e.g., accelerated assessment in case of persons leaving India or discontinued businesses).
Section 4(5): Mode of Recovery
It mandates that tax shall be deducted at source (TDS), collected at source (TCS), or paid in advance as prescribed.
2. Transition from 1961 to 2025: What Changed?
The most significant change in Section 4 of the 2025 Act is the simplification of the timeline.
| Feature | Income-tax Act, 1961 | Income-tax Act, 2025 |
| Primary Unit | Previous Year (Income earned) | Tax Year (Income earned) |
| Assessment Unit | Assessment Year (Tax paid) | Integrated into the Tax Year cycle |
| Language | Complex, multi-layered | Modern, direct, and simplified |
| Scope | Scattered additional taxes | Consolidated definition of “tax” |
Under the 2025 Act, the Tax Year 2026-27 refers to the period from April 1, 2026, to March 31, 2027. This eliminates the confusion of filing a return in “AY 2027-28” for income earned in “FY 2026-27.”
3. Practical Examples of Section 4 in Action
Example 1: The “New Business” Scenario
Suppose Mr. SK starts a tech consultancy on December 1, 2026.
Application: Under Section 4(4), his first “Tax Year” will not be a full 12 months. It will begin on December 1, 2026, and end on March 31, 2027.
Charge: Section 4(1) ensures that the rates applicable for Tax Year 2026-27 (as per the Finance Act 2026) are applied to the total income earned in those four months.
Example 2: The Foreign Resident
An expat, Ms. Arya, works in India for six months in 2026 and earns ₹20,00,000.
Application: Section 4(2) states the charge is on the “Total Income” of “every person.” Even as a non-resident, the “charge” is triggered because the income is earned within the Indian tax jurisdiction during the Tax Year.
4. Landmark Case Studies and Legal Principles
While the 2025 Act is new, it preserves the “legal soul” of the 1961 Act. Courts have historically used the charging section to define the boundaries of state power.
A. The Principle of “Vested Liability”
In the classic case of CIT vs. Singari Bai, the courts established that the liability to pay tax is a statutory liability that arises the moment the income is earned, even if the actual payment happens later. Section 4(1) of the 2025 Act reinforces this by linking the charge directly to the “Total Income of the Tax Year.”
B. Rates vs. Charge (The Finance Bill Interplay)
In Madurai District Central Co-operative Bank Ltd vs. ITO, it was held that while the Income-tax Act provides the machinery for assessment, the Finance Act provides the vitality (the rates). Section 4 of the 2025 Act serves as the “bridge” between these two. If a Finance Act is not passed in any year, the rates from the previous year usually prevail to ensure the Section 4 charge remains active.
C. Accelerated Assessment (The Exception to the Year Rule)
Normally, tax is assessed after the year ends. However, under Section 4(4), the department can assess tax immediately if a person is likely to leave India permanently.
Case Reference: In Re: Satyendra Mohan Roy Choudhury, it was upheld that the “unit of time” (the year) can be broken by the legislature to prevent tax evasion.
5. Components of "Total Income" under Section 4
To satisfy the charge under Section 4, the income must be categorized into the five heads retained in the 2025 Act:
- Salaries
- Income from House Property
- Profits and Gains of Business or Profession
- Capital Gains
- Income from Other Sources
Section 4 acts as the “umbrella.” Once income falls under any of these heads, Section 4 “charges” it, and the subsequent sections (Section 5 onwards) determine the scope and computation.
6. The Significance of Section 4(5): Pay-as-you-earn
One of the most litigated areas involves the timing of tax payments. Section 4(5) clarifies that the “charge” is not just an end-of-year event.
- TDS/TCS: These are “provisional” charges.
- Advance Tax: This is a “pay-as-you-earn” mechanism. Even if a taxpayer has paid 100% of their tax via TDS, the legal charge is still finalized under Section 4 through the filing of the Tax Return.
7. Conclusion
Section 4 of the Income-tax Act, 2025 is more than just a procedural clause; it is the constitutional anchor of direct taxation in India. By simplifying the “Previous Year/Assessment Year” duality into a singular “Tax Year,” the 2025 Act reduces the entry barrier for common taxpayers to understand their liabilities.
For a taxpayer, Section 4 is a reminder that:
- Liability is created by the Act.
- Quantification is done by the Finance Act (Rates).
- Collection is done through TDS and Advance Tax.
As India moves toward a more digital and “taxpayer-centric” era, Section 4 remains the bedrock, ensuring that the sovereign right to collect tax is exercised with clarity, fairness, and legal precision.
Frequently Asked Questions (FAQs)
1. What is the “Tax Year” concept in Section 4 of the 2025 Act?
This is the most searched query. In the 1961 Act, taxpayers had to navigate two different years: the Previous Year (when income is earned) and the Assessment Year (when income is taxed).
The Change: Section 4 of the 2025 Act introduces a unified “Tax Year.” For example, “Tax Year 2026-27” now refers to the period from April 1, 2026, to March 31, 2027, covering both the earning and the primary compliance cycle.
2. Does Section 4 of the new Act change the tax rates or slabs?
Taxpayers often confuse the Charging Section (Section 4) with the Slab Rates.
Clarification: Section 4 itself does not set the rates; it merely provides the authority to charge tax. The actual rates are defined in later sections (like Section 202 for the New Tax Regime) and are updated annually via the Finance Act. The 2025 Act maintains the New Tax Regime as the default.
3. Is the “Total Income” definition under Section 4 different now?
Many people search for changes in what constitutes taxable income.
The Reality: While the structure of the Act is simplified (reducing from over 800 sections to 536), the core concept of “Total Income” remains largely consistent. It still includes all five heads of income (Salaries, House Property, Business/Profession, Capital Gains, and Other Sources).
4. How does Section 4 affect existing assessments under the 1961 Act?
Since the new Act takes effect from April 1, 2026, there is high search volume regarding “repeal and savings.”
The Rule: Section 4 of the 2025 Act applies to income earned from the 2026-27 Tax Year onwards. Any pending proceedings or income earned for years prior to April 2026 will still be governed by the Charging Section of the 1961 Act.
5. Are surcharges and cess still included under the “Charge of Tax”?
Taxpayers often ask if the “Income-tax” they pay includes extra levies.
The Answer: Yes. Section 4(3) explicitly clarifies that the charge of “income-tax” includes any applicable surcharge and Health and Education Cess. This ensures that the legal mandate to collect tax covers the entire amount shown in your tax computation, not just the base rate.
Note for Professionals: The 2025 Act has integrated many “provisos” and “explanations” directly into the main text of Section 4 to reduce litigation and make the law more “reader-friendly.”
