There isn't one.
It varies not just from State to State, but frequently from county to county and even city or town to city or town within a state.
Also. what is taxed changes from area to area.
There is no universal sales tax rate in America - each state, county and city applies their own sales tax. See 'Sources and related links' below for each rate.
The sales tax rate for Topeka, KS is 8.95% and that is including the state of Kansas sales tax.
The state sales tax rate in Massachusetts is 6.25%
The state sales tax rate in Louisiana is 5.000%. With local taxes, the total sales tax rate is between 5.000% and 12.000%.
The state sales tax rate in Maryland is 6%. There are no local taxes beyond the state rate.
The state sales tax rate in Colorado is 2.900%. With local taxes, the total sales tax rate is between 2.900% and 10.900%.
The state sales tax rate in Arizona is 5.600%. With local taxes, the total sales tax rate is between 5.850% and 10.900%.
The sales tax rate in Iowa is 6%. Some areas of the state impose an additional 1% Local Option Sales Tax (LOST) bringing the total sales tax rate to 7%.
The sales tax rate are not the same in every state. It varies on what the state and local governments charge. If a business has a sales tax license, then they are allowed to charge it.
The 23669, Hampton, Virginia, general sales tax rate is 4.3%.
Although the "Tax Rate Finder" application apparently is not up-to-date or working currently, by navigating the Illinois Dept of Revenue website, all rates can be found. http://tax.illinois.gov/Publications/Sales/ As of 2009, the sales tax rate is as follows: Food tax (state): 1% General merchandise (state): 6.25% General merchandise (county): 0.25% General merchandise (city): 1.5% This makes the general merchandise tax total 8%. A local option sales tax was passed for the county in 2009, which will increase the county sales tax rate by 0.25% in 2010 for up to 20 years. This will cause the local general merchandise tax to be 8.25%.
The state sales tax rate in Tennessee is 7%. The local sales tax rates can be as high as 2.75%. Therefore currently the maximum sales tax rate is 9.75%. The sales tax amount on $5,000 is $487.50 at 9.75% and $350 at 7%.