<prompt> Human: Got a letter from the IRS today which indicated I owed an additional 26,000 in taxes on my 2010 taxes. A bit of reading and it becomes clear that somebody in their offices entered a 690.00 income from one source as a 69000 income forgot the decimal. Luckily all I had to do was open up my 2010 envelope and pull out the relevant 1099 form to send back as proof that theyre screwballs. Keep your records, friends! I was not expecting a paper audit 2 years after the fact, but Im glad I decided to not throw away any of this essential information.  <response>: Yup, happened to me, although on a much smaller scale.One year my wife had some surgery, and collected a couple grand in short-term disability. It was duly reported on our W-2. I did our taxes, paid what we owed, and that was that.Until...the STD company sent in a separate W-2. The IRS promptly sent us a bill for 600. All it took was a phone call to iron it out, but it was made so much easier because I had every scrap of paper. 