Such a dilemma. The IRS has sent me a nice notice saying they owe me $900 from my 1997 return. I thought perhaps I had made a data entry error. But it turns out that one of my employers misreported to the IRS the tax they withheld from me. How this happened, I don’t know; I always assumed that the software that spits out the number for me spits out the same number to the IRS, but my W-2 is clearly different from the government’s data. My software engineer’s inclination, which will certainly be a hassle to all parties involved, is to track down how this happened. My morals say “don’t take the money!”. And of course I’ve got a tiny little voice in my head saying “Hey, the form says if you do nothing, they’ll send you the money anyway!” What to do?