If you make less than $31,000 AGI or are active duty military with $57,000 or less you can get TurboTax for free online. Additionally, you can e-file federal for free. If you qualify for a Free Federal filing, you may also qualify for FREE STATE filing in the following states:
If your state does not sponsor a Free File Program, you can still prepare and file a state return within the Freedom Edition for only $14.99 (credit card required).
You have access to a lot of the same benefits as the paid version including chatting with real tax advisors over the internet or phone.