A slab system means that different tax rates are prescribed for different income ranges. It means that tax rates continue to rise as the taxpayer's income rises. This type of taxation allows the country to have progressive and equitable tax systems. These income tax slabs are subject to change with each budget. These slab rates differ for different types of taxpayers. Income tax has three categories of "individual" taxpayers, including:

Individuals (under the age of 60), both residents and non-residents
Senior citizens who live locally
Residents who are super senior citizens

An income tax slab is a system used by governments to categorize taxpayers into different income ranges, each with a corresponding tax rate. These slabs are designed to implement a progressive tax structure, where the tax rate increases as the taxpayer's income increases. For example, lower income brackets are taxed at a lower percentage, while higher income brackets are subject to higher tax rates. This ensures that individuals with higher incomes contribute a larger share of their earnings in taxes compared to those with lower incomes. The slabs and rates can vary significantly between countries and may be adjusted periodically based on economic conditions, inflation, and government policies. Income tax slabs help in promoting fairness and reducing income inequality within the economy.