I was sent a corrected w-2, but don't think that this will affect my taxes at all because they already took tax payment right out of the bonus. I paid the full bonus right back to them so that would affect my income for the year. Just wondering if I need to refile or not, and if so how the refile will look.
If you paid it back in a later year, then you will report the payback on the tax return for the tax year you actually paid it back. Your 2015 tax return remains unchanged.