Doe's business user with TAX number need to pay TAX? If I buy something in germany for my business, than I get back the TAX from the german finance office. I'm not sure about international transactions. If I remember me right, last no TAX was added as I bought a software from france.

PS: maybe this infos could be added to the MOI page - TAX or no TAX and if TAX, also for people with TAX number?