You can file with TurboTax Free Edition if you use form 1040 with no attached schedules, but will need to upgrade to a different product if your tax situation this year falls outside of these situations.
Simple tax situations covered in TurboTax Free Edition:
• W-2 income
• Limited interest and dividend income reported on a 1099-INT or 1099-DIV
• Claiming the standard deduction
• Earned Income Tax Credit (EIC)
• Child tax credits
Situations not covered in TurboTax Free Edition include:
• Itemized deductions
• Business or 1099-MISC income
• Stock sales
• Rental property income
• Credits, deductions and income reported on schedules 1-6, such as the Student Loan Interest Deduction