Thanks for your prompt reply, @email4.
I'll share some other ways to reflect those interest payments as expenses in your BBL account.
You'll want to manually add an expense transaction to your BBL account to show the interest payments as an expense. I'll show you how.
- Go to the Accounting menu in your QuickBooks Online (QBO) account.
- Select Chart of accounts.
- Locate and double-click your BBL account to open it.
- From the top of the list, select the Add cheque or Add Expense drop-down and select Expense.

- Fill out the fields to complete the transaction, then click Save.
You can also check this link for more details about the process: Manually add transactions to accounts in QuickBooks Online.
Moreover, I still encourage you to check with your accountant or visit our ProAdvisor page to look for one from there. This way, you'll be guided accordingly in recording this. They can also provide you on other ways to record this.
Once you're all set, feel free to check out this article for reference. This can walk you through the process of flawlessly matching your book and bank accounts: Reconcile an account in QuickBooks Online.
I'll be here if you have any additional questions about recording your expenses in QBO. Keep safe!