You really cannot delete an account ( it can be deactivated but you have to jump thru hoops to do it). If your browser is remembering all your userIDs and passwords it would be easier just to delete the info on the account you don't want so it doesn't show it as an option any longer ... also delete your browser history.
Contact support for a case number if you really want to put forth the effort to deactivate ....
Use the following TurboTax website to contact TurboTax customer service/support.
Submit your question/problem during business hours and then use the option for Call.
There will be some personal information gathered so a case can be created for you. A phone number will then be provided, specific to your case, to speak directly with a TurboTax agent.
https://support.turbotax.intuit.com/contact/
Note: The Call option will not be available when TurboTax Support is closed.
