This happened to us as well too. When filling in TurboTax for 2020 taxes, I logged into the IRS website to get the EIP 1 and EIP 2 payments for the recovery rebate credit worksheet and entered them into TurboTax. What I didn't catch is to take each EIP payment x 2 as the IRS website only shows it for one person and not for both me and my spouse together. Once I made the adjustment, I derived at the same numbers as the IRS calculated and received a letter from them as well with an explanation. Made the changes in Turbotax and saved the file so won't impact future returns.
