The tax settings of your store depend to a large degree on where you are based.
To simplify matters, Kartris features a 'Regional Setup Wizard' (found within the 'Regional Setup' menu). This walks you through some simple questions and then sets up the various tax settings for you, including determining which countries/states are activated and set to have tax charged to them.
Note that the tax regime used is hardcoded in this wizard. That's because it uses the tax regime specified in the web.config file, which is generally set when the store is first set up.
