How do I delete my Federal tax return

[DoninGA]

If you have not paid for the online edition you are using, have not filed your tax return or registered the Free edition, then you can clear your return and start over. Click on Tax Tools on the left side of the program screen while working on the 2021 online tax return. Click on Clear & Start Over.

[VolvoGirl]

If you haven't filed, registered or paid you can try to clear it.  Or just leave and abandon it.

https://ttlc.intuit.com/community/using-turbotax/help/how-do-i-clear-and-start-over-in-turbotax-onli...