They should be in your Documents in a Turbo Tax folder. Or search your computer for all files ending in .tax2021. There should also be temp files that start with a Tilde sign ~ . That's in case your file gets corrupted or you lose it.
You can delete a tax return from within the TurboTax Windows Desktop Program on the very first screen after starting the program or go to File-Open. Click on the large square icon representing the file you wish to delete (avoid clicking the blue "Continue" button). Then just hit your delete key and answer the prompt.
OR Start the program and on the first page click the blue Find A Tax File link at the bottom of the box. Then in the list that pops up you can right click on the file and choose delete.
