How do I disconnect the bank account from my QuickBooks?

It's good to see you here in the Community, wturnertrading.

Helping you disconnect a bank account from your QuickBooks Online is quick and easy. You can remove the check-mark for the File Upload Account option to disconnect it.

Here's how:

1. Click Banking, and then select the Banking sub-tab.
2. Select your savings account, and then click its Edit icon, then Edit account info.
3. In the Account window, remove the check-mark for Disconnect this account on save.
4. Click on Save and Close.

You can visit the links below. These will provide you with articles and videos about managing your QuickBooks Online account, income, expenses, banking as well as editing, assigning, and categorising your transactions:

QuickBooks Online Banking

Connect bank and credit card accounts to QuickBooks Online

I'll be around if you still have banking concerns in QuickBooks Online. I'd be happy to lend you a hand.