After you file

Use the exact same account and user ID you started it with, and open up the account by clicking Add a State.

 

You have until October 15, 2019 to e-file a 2018 return.  After that, online tax prep and e-filing for 2018 will shut down.  After the deadline, you will have to print, sign and mail a 2018 return.

**Disclaimer: Every effort has been made to offer the most correct information possible. The poster disclaims any legal responsibility for the accuracy of the information that is contained in this post.**