I believe there is a bug in the calculation under certain circumstances for self-employed individuals with 1099 income, and healthcare purchased from an ACA healthcare site. So, I created a blank tax file. Entered my info (age 62, spouse 58, married filing jointly), consultant, $100,000 in 1099 income, 12,000 in healthcare premiums on 1095-a. (14,400 SLCSP and 0 advance payment if that matters.) The program correctly puts 12,000 as a deduction on Sched 1 line 16. I then reduced the income to $80,000 it reduces the insurance deduction on sched 1 line 16 to $3,698 and puts the rest of the premium as a medical deduction I think. At that point I think it should still deduct $12,000 there. If I then reduce the income to $30,000 it goes back to 12,000. Seems to be a bug to me. Anyone understand what's going on here, I'd appreciate any input. I searched and couldn't find a similar issue.
