The District of Columbia state sales tax rate is 5.75%, and the average DC sales tax after local surtaxes is 5.75%. Washington, DC recently lowered the district sales tax by a quarter of a percent from 6% to 5.75%. The District of Columbia's sales tax is imposed on all sales of tangible property as well as on certain services. There is an additional sales tax of 9% on liquor and alcohol, 12% on parking fees, 10% on restaurant meals and rental cars, and 14% on hotel fees.