In which year can I deduct health insurance enrollment payment?

[Dmitry1]

In which year can I deduct health insurance enrollment payment? (For the health insurance purchased on the marketplace with tax credits applied to the cost of the plan.)

For example, I enrolled for 2018 coverage and paid premiums for the first month of the coverage in November, 2017. In which return can I claim deduction for my self-employed activity?

[Critter]

If you pay the insurance premiums in 2017 they are deducted on the 2017 return.

[Dmitry1]

And how is that possible? I can deduct only amount adjusted for tax credits. But I don't know actual tax credits for 2018 in 2017!

[Critter]

You will adjust for the tax credits on the 2017 return since you are paying the premiums in 2017. And next year you will make any adjustments needed based on the fact that you didn't pay any premiums ... believe in the system since it works.

[Dmitry1]

I pay premiums, so I don't understand what you are writing about.

[Critter]

If you pay all of the 2018 premiums in 2017 then you will not pay any out of pocket premiums in 2018 ... so on the 2018 return you will only have to reconcile the Advance Premium Tax Credit on the 2018 return.

[Dmitry1]

Of course, I payed only firth month payment for 2018 in 2017.