Does this application file once I complete it and pay?

[VolvoGirl]

No, not automatically.  After you fill out your return and pay you need to keep going on to the very end and enter your prior year AGI to verify you then hit the big orange Transmit Returns Now button to efile.  You can efile until Oct 15.  Or you can print and mail your return.

How to efile
https://ttlc.intuit.com/turbotax-support/en-us/help-article/electronic-filing/e-file-personal-indivi...

Or How to mail a return from the Online version
https://ttlc.intuit.com/community/printing/help/how-do-i-print-and-mail-my-return-in-turbotax-online...