Online preparation and e-filing for 2016 is permanently closed.
To file a return for a prior tax year
Only a 2017 return can be prepared online and e-filed.
If you need to prepare a return for 2014, 2015, or 2016 you can purchase and download desktop software to do it, then print, sign, and mail the return(s)
https://turbotax.intuit.com/personal-taxes/past-years-products/
(if you want to prepare on paper for free: )
You can download the Forms and Instructions from the IRS web site:
https://www.irs.gov/forms-pubs/prior-year
Remember to prepare your state return as well—if you live in a state that has a state income tax.
When you mail a tax return, you need to attach any documents showing tax withheld, such as your W-2’s or any 1099’s. Use a mailing service that will track it, such as UPS or certified mail so you will know the IRS received the return.
Based on your income and your filing status you might have to file a return for 2016 and/or 2017. If you need to prepare a return for 2016 and 2017 you can purchase and download desktop software to prepare it, then print, sign, and mail the return(s).
Check the IRS website for additional information regarding the filing requirements.