• 45 states collect statewide sales taxes.
• 38 states collect local sales taxes.
• The five states with the highest average combined state-local sales tax rates are Tennessee (9.45 percent), Arkansas (9.24 percent), Louisiana (8.91 percent), Washington (8.88 percent), and Alabama (8.85 percent).
• Sales taxes rates differ by state, but sales tax bases also impact how much revenue is collected from a tax and how the tax effects the economy.
• The District of Columbia successfully expanded its sales tax to include some services, which allowed reductions in its individual and corporate income tax rates.
• Differences in sales tax rates cause consumers to shop across borders or buy products online.
Continue reading here: http://taxfoundation.org/article/state-and-local-sales-tax-rates-midyear-2014