how ironic that many "progressive" states have the highest Sales Tax rates. Not in AZ. Between state and local tax, AZ sales tax can get as high as 10.3%. http://phoenix.about.com/library/blsalestaxrates.htm Arizona has highest sales tax burden in US Arizona has the lowest unemployment insurance tax levies on employers in the U.S. and consequently some of the lowest UI benefits for jobless workers. http://www.bizjournals.com/phoenix/news/2012/10/10/arizona-has-highest-sales-tax-burden.html?page=all