Your question is pretty difficult to answer in the general sense. As of today, I observe that Turbotax has now correctly included the 1040 line 12(b) amounts in form 2210 line 7; the original problem with the overstatement of 1Q annualized income was fixed some time ago. 2020 refunds applied to 2021 are still not included in line 11, and I believe the form 2210AI line 14 tax computation to still be incorrect. In my case I believe they are undercalculating my annualized tax obligation in columns (a), (b) and (c), but the resulting required installments are the same with or without the error. I have filed with the errors and documented my calculations. Your situation may be different.
