by Section 4 of the Income-tax Act, 1961 is the charging section of the Act. It provides the legal authority for the levy and collection of income tax in India. No income tax can be imposed unless it is authorized by this section. Section 4 lays down the fundamental principles regarding the charge of income tax, the person liable to tax, the assessment year for taxation, and the income on which tax is to be levied. It serves as the foundation of the entire Income Tax Act and determines how and when tax liability arises.
Basic Principles for Charging Income Tax [Section 4]
1. Income Tax is Charged by Authority of the Income-tax Act
The first and most fundamental principle of charging income tax is that tax can be levied only under the authority of the Income-tax Act, 1961. Section 4 is known as the charging section because it creates the legal liability to pay income tax. Without a charging provision, no tax can be imposed on any person. This principle is also supported by Article 265 of the Constitution of India, which states that no tax shall be levied or collected except by the authority of law. Therefore, every assessment, collection, and recovery of income tax must be backed by statutory provisions. Section 4 provides the legal foundation for the entire taxation system and gives effect to all other provisions of the Act. The computation provisions, assessment procedures, and collection mechanisms derive their significance from this charging section. Consequently, income tax is not imposed arbitrarily but only through a valid law enacted by Parliament. Thus, Section 4 serves as the basis for the lawful levy and collection of income tax in India.
2. Tax is Charged for Every Assessment Year
Section 4 provides that income tax shall be charged for every Assessment Year at the rates prescribed by the relevant Finance Act. The assessment year is a period of twelve months commencing on 1st April and ending on 31st March of the following year. Income tax is assessed annually, ensuring a systematic and regular process of taxation. The concept of an assessment year is important because tax liability is determined separately for each year. The rates of tax may vary from one year to another depending on government policy and economic conditions. Therefore, Parliament passes a Finance Act every year specifying the applicable tax rates. The annual assessment system ensures consistency, transparency, and efficient administration of tax laws. It allows the government to revise tax rates and introduce new fiscal measures whenever necessary. Thus, the principle that tax is charged for every assessment year forms a crucial element of the Indian income tax system and facilitates orderly tax administration.
3. Tax is Levied on the Total Income of the Previous Year
A basic principle under Section 4 is that income tax is charged on the total income of the previous year of every person. The previous year generally refers to the financial year immediately preceding the assessment year. Total income means the aggregate income computed according to the provisions of the Income-tax Act after considering exemptions, deductions, allowances, and adjustments permitted under law. Income earned during the previous year becomes taxable in the relevant assessment year. This principle ensures that tax is imposed on income that has already been earned and quantified. It provides certainty in tax administration because the income available for assessment is known and measurable. The concept of total income includes income from all taxable sources unless specifically exempted by law. Therefore, accurate computation of total income is essential for determining tax liability. This principle forms the foundation of the assessment process and ensures that taxation is based on actual income earned by the taxpayer.
4. Tax is Charged on Every Person
Section 4 provides that income tax shall be charged on the total income of every person. The term “person” is defined under Section 2(31) of the Income-tax Act and has a very wide meaning. It includes not only individuals but also various entities recognized under law. These include Hindu Undivided Families (HUFs), companies, firms, associations of persons, bodies of individuals, local authorities, and artificial juridical persons. Each category of person is treated as a separate taxable entity and is subject to tax according to the provisions applicable to it. The inclusion of different categories ensures that all forms of income-generating entities fall within the scope of taxation. This broad definition prevents tax avoidance and ensures comprehensive coverage of taxpayers. The principle reflects the intention of the legislature to bring every eligible taxpayer within the tax net. Therefore, tax liability under Section 4 is not restricted to individuals alone but extends to all recognized taxable persons.
Persons Liable to Income Tax Include:
- Individual
- Hindu Undivided Family (HUF)
- Company
- Firm
- Association of Persons (AOP)
- Body of Individuals (BOI)
- Local Authority
- Artificial Juridical Person
The tax liability of each category is determined according to the provisions applicable to that particular person. Therefore, the scope of taxation extends to all recognized taxable entities under the Act.
5. Tax Rates are Prescribed by the Annual Finance Act
Although Section 4 authorizes the levy of income tax, it does not specify the rates at which tax is to be charged. The actual rates of income tax are prescribed each year through the Finance Act enacted by Parliament. The Finance Act specifies tax slabs, surcharge rates, cess, rebates, and other fiscal measures applicable for the relevant assessment year. This arrangement provides flexibility to the government in responding to changing economic conditions and policy requirements. By revising tax rates annually, the government can encourage investment, stimulate economic growth, or increase revenue when necessary. Taxpayers must therefore refer to both the Income-tax Act and the Finance Act to determine their tax liability accurately. The annual determination of rates ensures that the taxation system remains dynamic and responsive to national needs. Thus, the Finance Act plays a crucial role in implementing the charging provisions contained in Section 4.
6. Income Tax Includes Additional Taxes
Section 4 recognizes that the total tax liability of a taxpayer may include additional levies besides the basic income tax. These additional taxes generally include surcharge and health and education cess. A surcharge is an additional charge imposed on taxpayers whose income exceeds specified thresholds. Health and Education Cess is levied as a percentage of the income tax and surcharge payable and is used to support government expenditure on education and healthcare. These additional levies increase the total tax burden and contribute to government revenue. The rates and applicability of surcharge and cess are prescribed by the annual Finance Act. Taxpayers must calculate these charges after determining their basic income tax liability. The inclusion of surcharge and cess reflects the government’s need to raise additional resources for specific developmental and welfare objectives. Therefore, income tax under Section 4 may consist not only of basic tax but also of these supplementary charges.
7. Income Must be Computed According to the Provisions of the Act
Before income tax can be levied, the income of the taxpayer must be computed in accordance with the provisions of the Income-tax Act. The Act provides detailed rules for determining taxable income under various heads such as Salaries, House Property, Business or Profession, Capital Gains, and Income from Other Sources. During the computation process, various exemptions, deductions, allowances, and set-offs are taken into account. Only the income calculated according to these statutory provisions forms part of the taxable total income. This principle ensures uniformity, consistency, and fairness in tax administration. It prevents arbitrary assessments and ensures that all taxpayers are assessed according to the same legal standards. Proper computation is essential because tax liability depends directly on the amount of taxable income determined under the Act. Therefore, the charging provisions of Section 4 operate only after income has been correctly computed according to the prescribed legal framework.
8. Income Tax is a Direct Tax
Income tax is classified as a direct tax because the burden of the tax falls on the same person who is legally responsible for paying it. The taxpayer who earns the income is required to pay the tax directly to the government, and the burden generally cannot be transferred to another person. This characteristic distinguishes income tax from indirect taxes such as GST, where the tax burden is ultimately passed on to consumers through higher prices. As a direct tax, income tax is closely linked to the taxpayer’s income and ability to pay. Individuals and entities with higher incomes generally contribute more tax, making the system equitable and progressive. Direct taxation also helps the government achieve social and economic objectives such as reducing income inequality and promoting fair distribution of wealth. Therefore, the nature of income tax as a direct tax is an important principle underlying the charging provisions of Section 4 and the broader taxation system in India.
