I did not owe any tax in 2008, but made two pretty large errors on my return. I entered a capital gain incorrectly and I misclassified a tax exempt bond. The two are roughly the same size in opposite directions, and if I fixed both I would still owe no taxes. Presumably if audited they would correct both and there would be no change. So, do I just forget about it, or am I obligated to amend the return?
As a practical matter, is there any chance of an audit at this point?