Has anyone had problems with the IRS in the past? I bought a stock years ago and it spun off a company that then spun off another company and those shares were sold this year. Not that I want to make anything up on my original basis, but I don't know how easily I could come up with it, let alone whether the IRS would ever question it or audit it. The total dollars are under $10,000 so the gain is obviously no more than a piece of that. Do I try my best/wing it or really try to accurately calculate and report the gain?