Utility Bill Split between tenants

Hello there, @accountingatheart. Let me help you record the Utility Bill between your client and his neighbor inside QuickBooks Online (QBO). 

We appreciate you for sharing a detailed situation with us. For the first scenario, you can create an Expense or Check, which depends on the mode of payment. Here's how to record an Expense for the scenario one:

1. In +New, click Expense.
2. Choose the vendor from the Payee Field.
3. Select the account used when paying the expense in the Payment account.
4. Enter the expense date in the Payment date and select how you paid the expense in the Payment method.
5. You can enter the Ref no and Permit no for detailed tracking.
6. In the Tags field, enter the preferred label to categorize your money.
7. Enter the expense info in the Category details section and choose the expense account in the Category dropdown.
8. Put the Amount and Tax.
9. If done, click Save and Close.

On the other hand, you can create a bill for scenario two and set the amount as billable. I'll show you how:

1. Choose Bill in the +New.
2. Select the vendor in the Vendor dropdown and choose the bill's term in the Terms dropdown.
3. Enter the Bill date, Due date, and Bill no. for detailed bill tracking.
4. Enter the bill details in the Category details section. From the Category dropdown, select the expense account you use to track expense transactions.
5. Enter the Amount and Tax, then click the Billable checkbox and enter their name in the Customer field.
6. Click Save and Close.

After that, you can follow step 3 in this article to add the billable expense in the invoice to let your client's neighbor pay the amount: Enter billable expenses in QuickBooks Online. 

Moreover, visit this link for additional insights about Bills, Checks, and Expenses in QBO: Learn the difference between bills, checks, and expenses in QuickBooks Online. 

Have a reply below for more questions about recoding a utility expense inside QBO. I'm always here to help. Take care!