If your government requires us to do so, we will add applicable sales tax to your purchase price. The tax might be called Sales Tax, GST, or VAT, depending on your country. Tax is normally included in the price of the ebook, or it will be calculated at checkout. (Or it will be left off in cases where ebooks are exempt from tax.) As we need to comply with the tax systems of multiple countries it can get a bit complicated, but we have tried to display exactly what tax you have to pay in the simplest and most transparent fashion. Simply put, if sales tax is applicable, it will be clearly shown at checkout.