I accidentally made excess contributions to my 401K back in 2019, but did not receive refund of the excess amount until Jan 2020. When I filed my taxes for 2019, the total amount of deferral exceeded $19000 (as reported from both my W-2 forms combined). Now I received a 1099-R for the excess amount that was refunded to me in Jan 2020. Upon reporting the 1099-R for tax year 2020, TurboTax is instructing me to revise my 2019 taxes. Do I need to, or is reporting 1099-R sufficient? Of note, the excess amount that was refunded to me did not have federal and/or state taxes withheld.
