Income Tax Act may refer to:
United Kingdom Income Tax Act 1842 (5 & 6 Vict. c. 35) Income Tax Act 1952 (15 & 16 Geo. 6 & 1 Eliz. 2. c. 10) Income Tax (Trading and Other Income) Act 2005 (c. 5) Income Tax Act 2007 (c. 3)
Elsewhere Income Tax Act 1976, a Statute of New Zealand Income Tax Act 1985, an Act governing income taxes in Canada since 1917, with the current version enacted in 1985. Income-tax Act, 1961, an Act of the Parliament of India Individual Income Tax Act of 1944, an Act raising income tax in the United States