Self-employed health insurance deduction goes on Form 1040 Schedule 1 line 17 (which goes to 1040 line 10), as long as the expense is not greater than your Net Profit on schedule C individually. If the Insurance is more than your Net Profit on each of your Schedule Cs you can split it up and enter it on each schedule C so you don't go over the net profit on either one. If it does exceed your net self-employment income it gets split automatically. An amount equal to your net self-employment income goes on Schedule 1 and the remainder gets added in to medical expenses on Schedule A.
