A few bugs that haven't been fixed in recent updates:
1) Form 2210 Part III Section A heading "Payment Due Dates" -the dates are "7/15/20", "9/15/20", and "1/15/21". They're off by one year, and for 2021 estimated tax payments reverted to 4/15/21, 6/15/21, 9/15/21, and 1/15/22.
2) Box (b) for Part III Section A Line 11 needs to pick up the June payment to avoid computing a spurious penalty.
3) Tax Payments Worksheet Estimated tax Payments for 2021 - an earlier version of the package corrupted date entry in Lines 1-4. The Jan 21 rev fixes this but you must re-enter all dates.
4) Charitable contributions entered through the questionnaire create "Charitable Org" forms but these don't reliably flow through to 1040 Worksheet Line 12b or Form 1040 Line 12b. You may need to manually copy the total to the worksheet.
