The sales tax rate for Seattle, Washington can be found on the Washington State Department of Revenue website. As of 2015, the combined tax rate for Seattle is 9.6 percent.
Washington is one of the few states that does not have an individual income tax, explains the Seattle Times. To bridge the revenue gap, the state's sales tax is proportionally larger than the sales taxes of most other states. Once municipal taxes are collected, they are then distributed to taxing authorities, which usually include the state, the city and regional bodies. In Seattle, sales tax revenue is divided between the state of Washington, the city and the Regional Transit Authority. In April 2015, voters approved a rate hike of .1 percent to benefit King County Metro Transit, notes the Seattle Times. Comprehensive information on taxes and rates, including updated change notices, is on the Washington State Department of Revenue website.
Seattle's rate of 9.6 percent puts it slightly higher than the state average, which is the fourth highest in the country; only Tennessee, Arkansas and Louisiana have higher sales taxes, as reported by the Seattle Times. Oregon, Delaware and New Hampshire are the only three states that do not have state or local taxes.