How do I delete a bank account permanently?

Hello there. Welcome to the Community.

Let's make your newly added bank account inactive in your chart of accounts so you can remove it from the list and keep your financial data organized in QuickBooks Online (QBO).

You're unable to permanently delete an account, except for merging one account into another. However, you can make it inactive to remove it from your list. Based on your description, I can tell that you've never used the account or its balance is $0. With this, you can easily make it inactive. To do this, here's how:

1. Go to Settings or the Gear icon.
2. Select Chart of accounts.
3. Find the account you want to delete.
4. Select the Action ▼ dropdown and choose the Make inactive option. 

For complete details about the things you need to know when making an account inactive in QBO, you can read this article: Make an account inactive on your chart of accounts in QuickBooks Online.

Also, I encourage you to reconcile your accounts in QBO regularly (every month). This helps monitor your income and expense transactions and detect possible errors accordingly. You may want to check out this article as your reference to guide you in doing and fixing reconciliation in QBO: Learn the reconcile workflow in QuickBooks.

Click the Reply button if you need more help managing your bank accounts and transactions in QBO or any QuickBooks-related concerns. Take care, and have a great day.