How to File | Internal Revenue Service (irs.gov)
You can use the free filing from the IRS website.
Ordinarily, you must have "earned" income to qualify for the credit.
Earned income is W-2's, Schedule C (Business), etc.
Interest, social security, retirement income, etc don't qualify as "earned".
consult the instructions for Form 1040 they lay it out really well
All the tax prep software companies do a really good job of alerting you if you qualify.
