in Arizona have their own sales taxes, and these are some of the highest sales tax rates in the United States. The highest sales tax in the country as of 2012, 13.725%, was found in Tuba City. Arkansas Arkansas has a state sales tax of 6.50%. City taxes range from an additional 0.25% to 3.5% and county taxes could be as much as 3.25%. Including city and county taxes, the highest sales tax rate is 11.625% in the portions of Mansfield that are in Scott County. Effective January 1, 2019, Arkansas' state sales tax on unprepared food (groceries) was reduced to 0.125% (1/8 of 1%) from 1.5%. Sales taxes on groceries had previously been reduced to 1.5% from 2% on July 1, 2011, to 2% from 3% on July 1, 2009, and to 3% from 6% on July 1, 2007. Local sales taxes on groceries remained unchanged. California California, from 1991 to 2012 and since 2017, has a base sales tax of 7.25%, composed of a 6% state tax and a 1.25% uniform local tax. California is ranked as having the tenth highest average combined state and local sales tax rate in the United States at 8.25%. As of July 2019, the city's rates vary, from 7.25% to 10.5% (Santa Fe Springs). Sales and use taxes are collected by the California Department of Tax and Fee Administration (prior to July 2017, those taxes were collected by the California State Board of Equalization). Income and franchise taxes are collected separately by the California Franchise Tax Board. In general, sales tax is required on all purchases of tangible personal property to its ultimate consumer. Medical devices such as prosthetics and dental implant fixtures are exempt from sales tax with the exception of prosthetic teeth such as dentures, dental orthotics/orthopedic devices, and dental crowns which the state treats as personal property. Grocery goods, bakery items, hot beverages, candies, livestock, crops and seeds, fertilizer used to grow food, certain devices related to alternative energy, and one-time sales are also exempt from sales tax. Colorado Colorado's state sales tax is 2.9% with some cities and counties levying additional taxes. Denver's tangibles tax is 3.62%, with food eaten away from the home being taxed at 4%, most unprepared food (groceries) are exempt. A football stadium tax which expired December 31, 2011, but still has a mass transit tax, and scientific and cultural facilities tax. The total