Hi,
Thanks for your response! I confirmed the contribution on March 2021 was indeed for 2020. You mentioned "then you should have reported it on your 2020 return", but when I searched how to report it, I found "
Form 5498 is for informational purposes only. You are not required to file it with your tax return.
This form is not posted until May because you can contribute to an IRA for the previous year through mid-April. This means you will have finished your taxes before you receive this form." my form 5498 was issued on 05/2021, so I don't understand how I could have reported on my 2020 return.
