Line 12b on the 8889 is the excess amount of contributions withdrawn after the end of the year.
The issue with this field is that if on the first pass, TurboTax says that you had X in excess contributions and you agreed to withdraw Y before the due date (i.e., after the end of the year), then even when you change things on the second pass so that there is no longer an excess, this number in 12b gets "stuck".
If this field is giving you trouble, the best thing to do is to delete all HSA data and re-enter it from scratch - there is no way to get rid of that number (if it is now incorrect) otherwise.
To delete the HSA data, please do the following:
1. make a copy of your W-2(s) (if you don't have the paper copies)
2. delete your W-2(s) (use the garbage can icon next to the W-2(s) on the Income screen)
*** Desktop***
3. go to View (at the top), choose Forms, and select the desired form. Note the Delete Form button at the bottom of the screen.
*** Online ***
3. go to Tax Tools (on the left), and navigate to Tools->Delete a form
4. delete form(s) 1099-SA (if one), 8889-T, and 8889-S (if one)
5. go back and re-add your W-2(s), preferably adding them manually
6. go back and redo the entire HSA interview.
**Say "Thanks" by clicking the thumb icon in a post
**Mark the post that answers your question by clicking on "Mark as Best Answer"
