Hello. Let me share some information on how billable expense/income works in our program, schand.

When you mark an expense as billable, QuickBooks records the expense as a cost to your company and creates an accounts receivable entry for the client. When you invoice the client for these billable expenses, the income is recognized, and the accounts receivable is cleared. 

However, since the Billable Expense Income feature is throwing you off, it could be due to a few reasons:

• Expenses are not being marked as billable correctly.
• The corresponding income is not being recognized as expected.
• There could be issues with how the billable expenses are being linked to the client invoices.

If that's the case, I suggest reviewing the steps for recording billable expenses in QuickBooks Online. This ensures that you accurately mark the expenses as billable and link them to the client invoices. 

Enter a billable expense:

1. Go to the +New button.
2. Choose the transaction type (Bill, Expense, or Check) you want to create.
3. Select the payee.
4. In the Category column, pick the expense account for the transaction.
5. In the Customer column, select the customer you want to bill for this expense. 
6. Make sure to tick the Billable box.
7. Hit Save and close.

Adding billable expenses to invoices:

1. Still, go to the +New button.
2. Select Invoice.
3. From the Customer dropdown menu, choose the customer you created a billable expense for. This opens the Add to invoice window.
4. Click Add on the billable expense you want to charge to your customer.
5. Hit Save and close.

Additionally, you can refer to these articles at any time to manage your customer and vendor workflow:

• Invoices and payments.
• Expenses and vendors.

If you need more help with managing billable expenses on invoices, feel free to ask. I'm here to assist you whenever you need it.