How can I unlink my bank account from my QuickBooks account?

Hi @aand319,

I appreciate you for reaching out to us here in the Community. I can help you unlink the bank account in QuickBooks Online.

When you connect an account, the data that downloads depends on your bank. Since the transactions download automatically to the For Review tab, the only option is to exclude and delete.

To disconnect the account, you can follow these steps:

1. On the left navigation bar, hover your cursor to Banking menu or Transactions menu and choose Banking.
2. Select your bank account.
3. Click the pencil ✎ icon, then press Edit account info.
4. Put a checkmark on the Disconnect this account on save checkbox. 
5. Hit Save and Close.

You can also check this article for more details about uploading bank transactions, like the supported file format and how to upload the data for accounts not linked to QuickBooks: Manually upload transactions into QuickBooks Online.

Drop me a comment below if you have any other questions related to QuickBooks Banking or importing data. I'll be happy to help you some more.