Due to having withdrawn money from IRA to purchase a home, I had to repay the entire Premium Tax Credit in the amount of $15,000.00 when I filed my taxes in February 2018.
Can I deduct the entire $15,000 when I file this year?
Personal Finance & Money Stack Exchange is a question and answer site for people who want to be financially literate. It only takes a minute to sign up.Sign up to join this community
I guess this was because the withdrawal put you over 400% of the Federal Poverty Level (FPL). Too bad it wasn't a Roth IRA open at least 5 years :-)
If you received excess APTC (Advance Premium Tax Credit) in 2017 and had to repay it (when filing in early 2018) it counts as a medical expense on your 2017 return. For most people this means a Schedule A deduction if you itemize (and exceed the 7.5% floor). As @quid hints, health insurance for self-employed is handled differently, but Is "premium tax credit repayment" deductible as health insurance cost for self-employed? got an answer from the IRS that it works similarly for this case.
Note the links in that question are to the web version of pub 502 which changes every year and is already updated for 2018, although this point hasn't changed. If you need to confirm, prior-year publications are available in PDF at https://www.irs.gov/forms-pubs-prior-search?search=502
You can amend for a refund up to 3 years from the filing deadline (or actual filing if later, or 2 years from payment if later, but it doesn't sound like those apply to you).