Deductions & credits

You don’t have to calculate anything.  Turbo Tax does it for you.  It will automatically send the rest of it to Schedule A Medical Deductions.  And the health insurance won’t actually reduce your Schedule C self employment Net Profit .  It goes on Form 1040 Schedule 1 line 17 (to 1040 line 10).  So you still pay self employment on the whole Net Profit.