For anyone finding this thread in 2019, as of right now, the Home and Biz 2019 version is worse than wonky at around 400%. In fact, it appears that TTax takes a look at your AGI without the self-employed health insurance deduction, and if your AGI exceeds the 4*FPL threshold, it just decides you don't get the subsidy, even if calculating the deduction and subtracting it from your AGI would put you below 400%.
To make matters worse, you can uncheck the box in the personal deduction/ACA insurance area that says you are self-employed, as suggested by TaxGuyBill, but it will attempt to create a deduction anyway. So, you have a choice (according to TTax), pay the subsidy back or take a larger deduction than would be legal.
Hopefully, they will get this resolved quickly. If not, we will have no other choice but to do it manually, and then not be able to e-file.
