How are you reporting the earnings on the excess contribution?  I too have gotten the earnings on the excess contribution information as well as the taxes withheld. I am inclined to use Form 4852 (substitute W-2/1099-R) but not sure if that is correct.  The payer won't issue 1099-R until 2021 but the earnings withdrawn need to be reported on 2020.  I would rather not file an amended return later especially since I have the correct information