There is no federal sales or use tax in the United States. All but five states impose sales and use taxes on retail sale, lease and rental of many goods, as well as some services. Many cities, counties, transit authorities and special purpose districts impose an additional local sales or use tax. Sales and use tax is calculated as the purchase price times the appropriate tax rate. Tax rates vary widely by jurisdiction from less than 1% to over 10%. Sales tax is collected by the seller at the time of sale. Use tax is self assessed by a buyer who has not paid sales tax on a taxable purchase.