The Sales Tax Rate calculated and published by the Tax Foundation is the estimated combined rate of state and local sales tax. The average local sales tax rate for the state is calculated by using population-weights. The average local sales tax rate can be added to the state's sales tax rate to provide a general estimate of the total sales tax faced by consumers within the state. 

A summary of the Tax Foundation's methodology and an important consideration are reproduced below. Please see the Tax Foundation's full study to read the complete methodology and explanations for this report.

The Sales Tax Rate in City (State and Local Combined) is calculated in the same manner and the data can be found here. The Sales Tax Rate City Ranking ranks the cities from the highest sales tax rate to the lowest sales tax rate.