I'm only 15, and I have my SSN readily available. However, like any sensible person, I don't want to give it to every single Afiiliate/CPA I sign up for. An EIN seems like an easy solution, but I don't want it negatively impacting me in any way for the future. Will getting a Sole Propietor (or whatever it is) EIN disallow me from getting one from a business I may join later in life? Will the IRS know that a 15 year old signed up for an EIN, or a better question, would they do anything about it? Thanks!