You can’t. At least not directly. I can confirm that on both the online and the Mac desktop versions the schedule A 8a box is NOT an editable field. Hence why I mentioned creating a fake 1098 which is where it is pulling the incorrect values from. Also, I obviously know about the guidance in 936 or else I wouldn’t have known the calculation was wrong.
Furthermore, as I stated in my post, TT is doing the calculation correctly they just have the wrong fields mapped together. So schedule A 8a should also (unless overridden) be the same as 22 on the worksheet. They are likely pulling 14 instead.
@fanfare
