2021 TurboTax is failing to include on Form 2210 line 11 column a the amount of a 2020 overpayment applied to 2021

[dmertz]

The subject line pretty much says it all.  Although 2021 Form 2210 has been released for filing with the R17 release on 02/17/2022, Form 2210 is still buggy.  2021 TurboTax is failing to include on Form 2210 line 11 column a the amount of a 2020 overpayment applied to 2021, resulting in an incorrect calculation of underpayments or overpayments on Section A of this Form.  Despite Section A being wrong, the calculation of the penalty on the Underpayment Penalty Worksheet appears to be done correctly.

[dmertz]

This bug is still present in the R18 release.

Note that my comment that the calculation on the Underpayment Penalty Worksheet being correct is in regard to including the overpayment from 2020 being applied to 2021.