I am in a similar situation as the OP. I put my fiance on company healthy insurance plan and when we got married during 2019 tax year, I did not inform them of the change during 2019 or within the 60 day grace period. At this point, since it is technically my oversight, we work is not willing to re issue my W-2 and make the correction.
I see you are suggesting that a line 21 deduction of all the imputed income reported during 2019 and since we have been married would be appropriate. Reading about line 21 reporting, this doesn't sounds like an of the described examples, though I understand it is meant as a catch all for income not applicable elsewhere. Is it really appropriate to use line 21 in this way?
