1.
Sign in to your TurboTax Online
account.
2.
Select Intuit Account from the
lower left corner.
3.
This will take you to an Account
Settings screen.
4.
Click Edit at the right of
the E-mail address line.
5.
Enter your new email address and
confirm it.
6.
Enter your password.
7.
Click Save, and you’re done.
If you no longer have access to your email address and are
unable to login to your TurboTax Online account please complete the Account Recovery Request Submission Form.
https://ttlc.intuit.com/questions/2578442-how-do-i-change-my-turbotax-account-email
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