I can help share some information about the use of billable expense to track the expenses billed to each customer or job. Are you using the Plus version in QuickBooks Online? If so, you can turn on the billable expense feature to start recording your billable transactions.
Go to the Gear Icon and select Account and Settings.
From the left menu, select Expenses.
Click the Pencil Icon for Bills and expenses to open the fields for editing.
Ensure that the following items are checked: Show Items table on expense and purchase forms, Track expenses and items by customer, and Make expenses and items billable.
Setting the markup rate and changing the income account is optional. By default, Billable Expense Income is selected.
As always, you can contact our Online Care Support if you need assistance in going through with the steps. They can access your account in a secure environment and help you navigate using their screen-share tool.
That should do it. I'm always here to help if you have further questions about tracking billable expense. Have a great weekend.