Hi, this is more investing related, but I thought I would give it a shot here. I sold some stock and mutual funds in 2006 that I have owned for over 10 years. The original purchase price and basis were not on the account, and the reps for the brokerage only have data going back 10 years. On the 1099for 2006 they report the total proceeds for liquidating everything, but how am I supposed to determine my tax liability if I cannot calculate my gains because I have no idea what the original basis was? Am I missing something painfully obvious? How will people retiring who have been putting money into their 401k for 30 years calculate their basis if there is no record for the original purchase price? Thanks for the help. Trying to get tax stuff done before my extension date of October 15th.