You can use the steps below to get to the section to update your phone number in your account information.
If you need to update your account information—such as phone number, email, password, or address:
Sign in to TurboTax and select the Tax Home button on the left.
Select Intuit Account on the bottom left, and you'll see your Account Settings.
Select either Profile or Security depending on which options you want to update.
Select Edit next to the option(s) you want to change.
From here you can also turn on two-step authentication.
NOTE: Information for TurboTax Advantage users.
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