I am no longer an employee. I am also getting this message "You may be due some cash back once you repay last year's deferred Social Security taxes"; however, my box 4 plus code M of box 12 = 6.2% of box 3. What do I need to do with code M of box 12 other than report it on my W-2 income? I won't be getting a W-2C from my employer. Do I somehow need to pay code M of box 12?
