The Income Tax Act in India classifies income into various heads to determine how much tax an individual or entity is liable to pay. These categories are essential for understanding how different types of earnings are taxed. The classification of income under specific heads enables taxpayers to identify which earnings fall under which category, thereby ensuring transparency and simplifying the tax calculation process. The Income Tax Act outlines five primary heads of income: Salaries, Income from House Property, Profits and Gains of Business or Profession, Capital Gains, and Income from Other Sources. Each head has its own set of rules and tax rates, making it necessary for taxpayers to be well-informed to optimise their tax obligations. Understanding these heads is crucial for accurate tax filing and effective financial planning.