How do I know my taxes are complete

If you clicked "Transmit Returns", it should be on its way to the IRS.  You will get notifications from Turbo Tax via email as well.  To check what step you are on, please follow the instructions at the link here.  

Did you go all the way through the File tab, through the 3 steps and hit the big orange Transmit Returns Now button?

You might be able to check your efile status here     

https://turbotax.intuit.com/tax-tools/efile-status-lookup/   

When you efile you get back 2 emails.  The first email only confirms the transmission.  The second email says if the IRS (or state) Accepted or Rejected your efile.

When you log into your account you should also see the status and if it was Accepted or Rejected, Started, Printed, Ready to Mail, etc.  What does it say?