I received and reported w-2g on my 2015 return from winnings received on 12/18/2015. I just received penalty for back taxes indicating IRS received W-2G from winning in 2016 in which I did not report. I tried calling casino and they said they reported it for 2015 but was not sent to IRS until 2016. Can I simply send in my W-2G along with return from 2015 to stop garnishments, penalties, etc or will that open up an additional audit on 2015 return.
