How do I completely delete that so I can start with a clean slate, please?
If you're using the CD version of the program that you installed on your computer, look in the documents\turbotax directory and delete the .tax2021 file. Then when you start the program its as if you just installed it and are starting it for the first time.
If you're using the online version and have already registered or paid your online fees, then you can't clear the return and start over. Otherwise, the ability the clear and start over is somewhere in the TOOLS menu on the left.
