If you haven't filed, registered or paid you can try to clear. This FAQ might be wrong, Clear and start over is now under Switch Products section.
https://ttlc.intuit.com/community/using-turbotax/help/how-do-i-clear-and-start-over-in-turbotax-onli...
Dec 2025, See this post for how to clear and start over. It has a screenshot
https://ttlc.intuit.com/community/taxes/discussion/trying-to-start-my-data-entry-over-by-clearing-cu...
