I have an older brother that thought he was "off the books". No S.S. #, no property in his name, he got paid "in kind", in general he thought he was hidden in plain sight. About 15 years ago, a F-up at computer company that he consulted for sold a computer to some Chinese students, just to help them out. Then a few more, and a couple more after that. Somewhere along the way the Chinese students turned into your friendly neighborhood FBI agents. Then the Brooks Brother suits showed up to have "friendly" chats with every one. Evan my brother, who did not work there, who had no tax records, no ID, not evan a freaking drivers license! And the friendly FBI man had a 3-ring binder full of all sorts of neat stuff about my brother. He got to take a copy home to review before his next chat, and the appointment with the IRS agent that was expecting him, and all sorts of friendly suits eager to help back to the path of virtue. Get the tax stamp, enjoy your toy, and don't worry about what the government does or does not know, 'couse I SAW the binder, and brother, you can't hind one damn thing from a government that want's to know about it!