The Income Tax Act, 1961
The framework governing how income earned in India is computed, taxed, reported and assessed.
The Income Tax Act, 1961 is the principal legislation for direct taxation in India. It sets out who is liable to tax, how taxable income is computed, the rates at which it is charged, and the procedures for filing, assessment and appeal. It is amended every year through the Finance Act, and supplemented by rules, notifications and circulars issued through the year.
Income is computed under five heads — salaries, house property, business or profession, capital gains, and other sources — and taxed for a financial year in the assessment year that follows it. A taxpayer's residential status determines how much of their global income falls within the Indian net.
Beyond the annual return, the Act creates a continuous compliance rhythm: tax deducted at source on specified payments, quarterly TDS statements, advance tax in instalments through the year, and record-keeping obligations that support whatever position is eventually taken in the return.
India has also enacted the Income-tax Act, 2025 to replace the 1961 Act. The underlying concepts largely carry forward, but section references, forms and certain procedures change, so transition timelines should be confirmed for your own situation.
Common compliance touchpoints
- Permanent Account Number (PAN) and, where applicable, TAN registration
- Annual income tax return, with due dates varying by category of taxpayer
- TDS deduction, deposit and quarterly statements
- Advance tax instalments where liability crosses the prescribed limit
- Tax audit for businesses and professions above prescribed turnover limits
- Assessment, reassessment, appeal and rectification procedures
Who it applies to
Individuals, Hindu Undivided Families, firms, LLPs, companies, trusts and every other person earning taxable income in India.