This is a common misconception; there have been certain years in certain regions were Amazon has paid little or no tax but this is due to the massive amount of investment amazon makes and the competitive and low-margin nature of the retail sector. Taxation is often misunderstood and areas such as corporate tax is calculated based on profits, not revenue as a whole. Amazon has paid billions in tax in some years and much less in others and has even had to make use of tax breaks, the issue of taxation surrounding such a large business is complex and often misunderstood.