This page applies if you were enrolled in a Marketplace plan but didn't qualify for (or didn't apply for) a premium tax credit.
Get your Form 1095-A, Health Insurance Marketplace® Statement
Find it in your HealthCare.gov account (select your 2016 application, not your 2017 application, and select "Tax Forms" from the menu on the left) or by U.S. Mail.
Use this figure to fill out Form 8962, Premium Tax Credit (PDF, 115 KB). When you're done, you'll find out if you qualify for a premium tax credit based on your final 2016 income.
If you qualify for a premium tax credit, you must complete Form 8962 and attach it to your federal income tax return.
Your credit will either increase your 2016 refund or reduce your tax bill.