Regardless, as a US citizen, you should hold on to at least 50% of your income from the sales of your books, usually I think they only allow you to make up to $600 before you NEED to actually pay tax on them, but it's better to err on the side of caution. Some of my more famous writerly friends routinely save at least 50% of their income so the tax man does not come knocking. You don't want to be the Wesley Snipes of self publishing
