Use tax is a tax that is imposed on the use, storage, or consumption of goods and services that were purchased without paying sales tax. It is typically imposed by the state or local government where the goods or services are used, and the rate is often the same as the sales tax rate. It is designed to ensure that people who purchase goods and services from out-of-state vendors or online retailers pay the same amount of tax as they would if they purchased the goods or services locally.
Source: tax.thomsonreuters.com