I can show how to delete your accounts, milkwoodonmain.
First, I would like to know if you meant about your Bank account connected with QuickBooks Online (QBO) or is it about the account in your Chart of Accounts. Some additional details would be very helpful.
If you meant on how to delete your Bank Account, let's make sure that the bank is not connected with our online banking feature. If so, you can disconnect it first. Here's how:
I added a screenshot for your reference.
Now, your account is still in QuickBooks but it will not automatically upload bank transactions. To delete your account in Chart of Accounts, you may need to consult your accountant first if you need more information about the impact in your books. You can also share these steps with your accountant:
Also, I can see this can be useful for future reference: Reverse or delete a journal entry.
Please don't hesitate to drop by in the Community if you have concerns. I'm glad to be of assistance. Take care.