If I got premium tax credits, do I have to file a tax return?

Yes, if you got premium tax credits for 2014, you have to file a federal tax return.  Even if you have never filed before, starting in 2014 if you got tax credits you have to file a tax return.

Your premium tax credits are based on the income you report to the IRS.  When you applied for health insurance through Covered California, you had to estimate your family income.  At tax time, you have to let the IRS know what your family’s actual income was for the year.