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You can enter contra payments in QuickBooks Online to offset the bill against the remainder of the sales invoice. To do this, select + New and select Journal entry. Then follow these steps:
1. For line 1, select Debtors (Accounts Receivable) in the Accounts column.
a. Enter the credit amount (in this case, 60.00) in the Credits column.
b. Enter the name of the customer in the Name column.
2. For line 2, select Creditors (Accounts payable) in the Accounts column.
a. Enter the debit amount (60.00) in the Debits column.
b. Enter the name of the supplier in the Name column.
3. To save the journal entry, click Save.
4. Open the outstanding invoice and select Receive payment.
5. Use the journal to pay off the full outstanding balance and Save.
6. Open the outstanding bill and click Make payment.
7. Use the journal to settle the amount.
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