If you have a very simple return, you can use the Free Edition.
Or—-Use this IRS site for other ways to file for free. There are 8 free software versions available from the IRS Free File site
Simple tax returns: If you have a simple tax return, you can file with TurboTax Free Edition, TurboTax Live Assisted Basic, or TurboTax Live Full Service Basic. A simple tax return is one that's filed using IRS Form 1040 only, without having to attach any forms or schedules. Only certain taxpayers are eligible.
Situations covered (assuming no added tax complexity):
Situations not covered: