Your Roth IRA basis carried into 2020 into 2021 and from 2021 into 2022 includes the excess $6,000 contribution made for 2020. Be sure to proceed past the page that lists the Forms 1099-R that you have entered, indicate that you want TurboTax to track your Roth IRA basis, then make sure that TurboTax shows the correct Roth IRA contribution basis for years prior to 2022. That amount will be $6,000 plus any other Roth IRA contributions you may have made prior to 2022 (minus any Roth IRA distributions you may have made prior to 2022).
