A sales tax is a consumption tax charged at the point of purchase for certain goods and services. The tax is usually set as a percentage by the government charging the tax. There is usually a list of exemptions. The tax can be included in the price (tax-inclusive) or added at the point of sale (tax-exclusive).
This prevents so-called tax "cascading" or "pyramiding," in which an item is taxed more than once as it makes its way from production to final retail sale. There are several types of sales taxes: Seller or Vendor Taxes, Consumer Excise Taxes, Retail Transaction Taxes, or Value Added Taxes.
