That has nothing to do with TurboTax, that is the built in Mac Keychain feature to remember and enter passwords for you.
https://support.apple.com/guide/keychain-access/what-is-keychain-access-kyca1083/mac
You must be sure the Remember in Keychain is unchecked if you do not want auto-login.
**Disclaimer: This post is for discussion purposes only and is NOT tax advice. The author takes no responsibility for the accuracy of any information in this post.**
