Tax+ USA is a fast and easy tool to use that helps you calculate American sales tax for any state in USA. (including Porto Rico)
Great for finding your total cost before making a purchase. And can also be a useful tool for vendors!
Main Features
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* Clean, attractive and easy to use interface.
* Accurately calculates General Sales Tax in all states of America.
* It remember which state you choose.
* Includes latest sales tax rates.
* Really clean and refine interface.
* Caltulate Sales tax immediately.
* Support for all states.
* You can also shake the iPhone to erase the price you ask for...