I buy a lot of books and other items from amazon.com. I recently noticed that they always charge sales tax on the shipping cost, not only on the item prices. Sales tax in Los Angeles is 8.25%. Tax on shipping is only a few cents here and a few cents there, but over dozens of orders it adds up. And over millions of customers we're talking about a lot of money. I know that the laws about whether shipping is subject tax varies from state to state. In California, merchants do not have to collect or pay sales tax on shipping charges. Is amazon overcharging me? Is the tax I've been paying on my shipping charges going into amazon's pockets, is it going to the state of California even though it isn't owed, or is it a legitimate charge even though I am in California?