1095-a

[jntom]

I had only about 2,000 dollars of income. I had marketplace for a month in february but then cancelled when I realized I wont be working for the rest of the year. Do I still have to file for that?

[MinhT1]

As you had a Marketplace policy (even for one month) and have received a form 1095-A, you are required to file a tax return and enter the form 1095-A on it. 

This is required to reconcile the APTC (Advance Premium Tax credit) on form 8962, even if your income is below the threshold requiring a tax return.