If I am not ready to file my taxes but need to update my direct deposit info how can it be done with waiting to do my taxes

[Kat]

You won't be able to change that information until you're almost ready to file.  You'll make the changes when you get to the FILE portion of your TurboTax return.  The TurboTax FAQ I'm linking below will explain how to do that when the time comes.

How do I change my transferred direct deposit information? 

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[xmasbaby0]

Your banking information cannot be changed after your tax return has been filed and accepted.

Banking information does not go from TT to the IRS until you file your 2020 tax return and it is accepted.  You enter/change banking information in the FILE section before you file your 2020 return. Changing it on the TurboTax site does not do any good until you file your return.  If they manage to send out stimulus checks before you can change your information, we hope the IRS provides a way for you to change it with the IRS.  If your check goes to a wrong or closed account, it will be sent back to the IRS and then the IRS will mail a check to the address on your tax return.