If I had an over contribution to my Roth 401k in 2019 ($1300) and removed the excess ($1300) and associated gains ($160) before April 15 2020, how would I go about reporting this to the IRS for my 2019 taxes? I did not receive a corrected W2. Would I edit box 12b in the W2 to subtract out the over contribution and report that over contributed amount ($1300) in misc income somewhere else? And I would deal with the gains in the following year's taxes correct? Thank you!!
