Imposts are taxes or fees that are imposed on goods or services. Synonyms for imposts include tariffs, levies, customs duties, excise taxes, and surcharges. Tariffs are taxes imposed on imported goods, while levies refer to taxes imposed on goods or services within a country. Customs duties are taxes imposed on goods when they enter or leave a country, while excise taxes are taxes imposed on specific goods such as tobacco or alcohol. Surcharge refers to an additional charge on top of the regular price of a good or service. Regardless of the term used, imposts are typically used to generate revenue for governments and to regulate the flow of goods and services.