Thanks for the heads up @fanfare . The Limitation worksheet is included. I had already done the calculation using IRS Pub 936 and that's how I know the worksheets in TT Premier 2021 are not calculating properly based on the values entered in the Step-by-Step Screens. The only reason for trying things now was to get a better sense of the Q4 estimated payment in January. I've deleted the file and will start over once everything is released.
