Ok ... if the child is being claimed on the other parent's return then both parents will enter the 1095-A on their individual returns ... if you and the child are on the 1095-A but you are not claiming the child then you will only enter your info from the 1095-A and the parent claiming the child will report only the child info on the1095-A on their return.
NOW ... since you have a 1095-A in common then you get to ALLOCATE the premium tax credit in any way you both can agree on ... this is one of those quirks in the tax system you can take advantage of as long as the % between the 2 returns totals up to 100%. So you can divide it 100/0 , 50/50, 70/30 or any other combination you can both agree on ... so take some time to review how these percentages affects both returns and make the best decision for all involved again if you can agree to it.
