For the same tax year? 2024? You cannot switch from desktop download and move the 2024 data from desktop software into 2024 online TT software if that is what you are asking. You can seek a refund for the desktop software and then start over in online. You cannot pay for online TT with the license key.
To request a refund for a TT product
https://ttlc.intuit.com/turbotax-support/en-us/help-article/intuit-refunds/request-refund-turbotax-p...
Gotta ask----why do you want to do that?
**Disclaimer: Every effort has been made to offer the most correct information possible. The poster disclaims any legal responsibility for the accuracy of the information that is contained in this post.**
