1.2.6 The total of the income under each head as worked out in accordance with the provisions of the Act
is termed as 'gross total income. The act provides for certain deduction from such gross total income. These deductions which are discussed in Chapter V, are not referable to any particular head of income, but are allowed from the aggregate of income under all the heads and are in the nature of incentive provisions of different kinds. For example, deductions are allowed for promotion of charitable activities, promoting exports and other activities resulting in the inflow of foreign exchange, for development of industries and for other socio-economic objectives. Incentives for promotion of savings are provided in the form of deduction in tax liability by grant of rebate at certain percentage on certain savings made out of taxable income.
1.2.7 After reducing the 'gross total income' by the amount of incentives deductions mentioned in the preceding paragraph. What is left is the amount on which tax is to be calculated at the rates prescribed by the relevant Finance Act. This amount is termed as Total income and is the base for taxation. For certain categories of tax payers, a basic exemption limit is provided and tax is calculated only on that part of the total income which is in excess of such exemption limit. If such 'Total income' is below the basic exemption limit, no tax is chargeable. For instance, under the Finance Act, 2000, no tax is payable by an individual if his total income is below Rs. 50,000/-. The rates of taxation and the exemption limit applicable to different categories of Assessees are given in Chapter XIII.