After you file

No they did not. It’s just a letter stating that I owe and they have a difference of what was entered vs what was sent to them via 1099b. The 1099b only shows total but doesn’t reflect the taxes I paid on it when I sold my non qualified stock. I was told that since 2014 changes were made and that I have to adjust cost. I’m not sure how to do that. I have a summary from Meryl Lunch that shows my taxes and how much my cost actually was. I would assume that last what i need to put bs what the 1099b shows