Originally I had overcontributed to my 401k in 2016. But 1 of my employers 401k manager issued a Corrective Distribution Refund Check bc they failed the Actual Deferral Percentage and Actual Contribution Percentage tests, so now I'm well below the limit. Do i need an corrected W2 to submit my taxed for 2016 or can i just manually tally the actual 401k contribution for 2016. The refund check came in 2017.
