Got a letter today that our 2012 fed. taxes were just found to be $1281 short due to a $4300 difference between what Merrill Lynch reported to us and what they reported to the IRS about a stock sale. We have the 1098 or whatever it's called, stating the exact dollar amount of the stock sale, which we forwarded on to our CPA. The IRS says what ML reported to them was $4300 more and hence we owe taxes on the difference. WTF? How can this happen?