I'm looking to open another account, but one that is not attached to my social security number. I looked at one company to open a business account but they still wanted my social security number. I want to keep my personal income taxes separate from my taxes from trading. (and also keep money in that account hidden from "prying eyes") if you know what I mean. Does anyone know of a retail firm that will open an account without your social security number and just let you use a tax identification number instead?