Grandmabee is correct. The way this actually works is that it is all accounted for and reconciled on that year's return even though the excess is paid back (or refund received) in the following year. The adjustment becomes part of the calculation for the deduction on Sch A or for SEHI. Here's how it works: the total gross premiums for that tax year are reduced by the actual PTC that is allowed as calculated on the return. not the amount of advance PTC that was claimed during the year. What that means is that if there was an excess claimed throughout the year, the premiums paid by the taxpayer out-of-pocket should have been higher, meaning that the Sch A medical deduction or SEHI are that much higher. If the return shows that the taxpayer could have utilized more APTC that results in an additional refund, then his out-of-pocket for premiums should have been lower during the year, and therefore the Sch A medical or SEHI would be that much lower. The tax program should be doing this automatically for you, but you should check to make sure this is how ATX is handling it. My program does do this automatically, but I no longer use ATX.
If that isn't clear, here is an example:
Total gross premiums for year: $12,000
APTC utilized throughout year: $7,000
Taxpyr prems pd during year: $5,000
If the amount of APTC used was the exact correct amount, then the taxpayer has a deduction of $5,000 for Sch A or SEHI purposes.
If the taxpayer should have only used $4,000 of credit during the year causing a $3,000 payback, then the share of premiums he should have paid during the year should have been $8,000, and that amount would go to Sch A or to SEH I even though the $3,000 payback occurs in the next tax year.
If the taxpayer was entitled to use $9,000 of credit and therefore has an additional refund of $2,000 on his return, that additional $2,000 effectively reduces the $5,000 of premiums paid down to $3,000, and only the $3000 is allowed as a deduction on Sch A or for SEHI.