sales tax

tax imposed on the sale of goods and services

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).
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Noun
1. a tax based on the cost of the item purchased and collected directly from the buyer
(synonym) nuisance tax
(hypernym) excise, excise tax

A percentage tax on the selling price of goods and services.