I can show you how to update the bank account where your customer payments are deposited to.
If you're using QuickBooks Payments, the payments go into the external bank account you pick. This is known as your payments account. To update it, you can use this link:
Log in to your QuickBooks Online account.
Go to the Gear icon and then select Account and settings.
Select the Payments tab. In the Deposits section next to Standard Deposits, select Change bank.
Click Add new bank account and enter the routing number and account number of the bank account you want to change to.
Select Save when you're ready.
Review the bank account info and ensure it’s selected before completing your request.
Moving forward, all customer payments will be deposited to the account your selected.
You can use these links for more detail in handling customer payments: