I have a online business in Oregon (no sales tax) . A customer in IL asked me about collecting sales tax since her state has a sales tax. I was told that there is a loophole basically and since my business is in OR and all parts of it, then I do not have to deal with any sales tax. Can someone clarify what I need to do? Do i need to collect taxes for another state? The purchase is for $600 so if means anything.