This document discusses various taxes including income tax, sales tax, and value added tax. It defines taxes as compulsory exactions of money by public authorities for public purposes. Sales tax is classified as an indirect tax on the sale of goods, while income tax and wealth tax are direct taxes. The Central Sales Tax Act of 1956 establishes principles for determining when inter-state sale or purchase of goods occurs. Value added tax is levied on the value added at each stage of production or distribution and aims to eliminate cascading of taxes.