Income definition under tax law covers taxable receipts from salary, business profits, investments and capital gains. The scope of income under income-tax law encompasses all receipts that constitute economic gain to a person and are chargeable to tax. For salaried individuals, this includes amounts or benefits from an employer in cash, kind or as facilities; for traders, net business profit; for investors, interest, dividends and commissions; and for disposals, gains on sale of capital assets. Taxable income is computed under the provisions of the Income-tax Act, 1961 which set out heads of income and computation rules.