In many European countries you pay taxes based on the remaining profit. So if you have small profit, you pay a very small tax on that. Companies tend to re-invest the money as much as possible, so they avoid paying a lot of taxes (which I think is a good thing in general).<p>The only problem appears when they do make a lot of profit, but manage to transfer it to other subsidiaries in other countries, so they pay much less profit there. I don't know if that's what Amazon did, but I'd keep in mind that while Amazon's revenues are high, their profits are usually very small.