A clear understanding of today's sales tax laws is important to your online business; it not only keeps you out of trouble with the tax man, but it also helps boost your bottom line. Consider the following questions. Do all 50 states collect sales tax? If not, which ones don't? What is Nexus? And what constitutes Nexus? In which states does Amazon have nexus? Do I, therefore, have nexus in those states? All these, and more, will be answered in this book.