How do you change bank accounts on turbo tax

[MindyB]

As long as you have not filed, you can update this in TurboTax Online per How do I change my bank info for direct deposit?: 

1. Open or continue your return.
2. Select File.
3. Select Start or Revisit or Continue next to Step 2 Your refund/payment info.
4. Select See all options on the Get your refund up to 5 days early screen.
5. Choose Direct deposit and follow the onscreen instructions.

If you have already filed, the IRS will not be able to deposit to a closed account, so they'll contact you.  If it is a valid account you just want to change, contact the IRS directly at 800-829-1040.