My banking info has changed. The account turbo tax has on file is closed. How will this effect my stimulus check?

You may receive a check in the mail, but more likely you will need to claim the second payment in the form of a credit on your 2020 tax return when you file. 

If you have not received your payment by January 15, 2021, you will claim the Recovery Rebate Credit by answering the two questions about the stimulus payments that will appear at the end of the TurboTax interview. 

The questions are in the section Federal Review.  

Once the information is entered you will see your refund increase or balance due decrease, and TurboTax will enter the amount of the credit on Line 30 of Form 1040 for you.