12B is the amount of the excess contribution that you agreed to withdraw before the due date of the return.
This number sometimes gets "frozen" in the return and you can no longer change it through the screens.
(NOTE: your employer contribution - which is the sum of what your employer contributed and what you contributed through payroll deduction - appears on your W-2 in box 12 with a code of W. This is the only place to change it)
Rather than thrashing about, it's best to delete all your HSA information and start over again with the HSA. To do this, 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.
