I fought this last year, and again this year, but the issue is subtle and here's the fix I found (I'm on Windows, but Mac might be the same):
- On the menu bar, select View / Form
Path 1:
- In the left panel, click "Schedule A"
- Now in the right pane, find 5b for State and local real estate taxes
- Click in the box where you'd enter numbers, and then Edit / Add Supporting Details
- Delete all of the data in rows that might be there -- that's what prevents the step-by-step from working
Path 2 (if path 1 doesn't work):
- In the left pane, click Tax & Int Wks under Schedule A
- Now in the right pane, find 2a for Real estate taxes...not entered on Form 1098
- Click in the box where you'd enter numbers, and then Edit / Add Supporting Details
- Delete all of the data in rows that might be there -- that's what prevents the step-by-step from working
You should be able to enter data in the step-by-step process now -- it worked for me. I had old notes from a prior year in those supporting detail tables.
