You can manually track customer payments to mark the invoices as paid, BeattieSweetie.
If you're utilizing a third-party application that integrates with QuickBooks Online (QBO) to receive payments, you can import the payment transaction and match it to the invoice you've already recorded in the program.
However, if you want to mark the invoices as paid within QBO, you can record customer payments to ensure balances in your account are accurate. To do this:
- In your QBO account, go to Sales and click Invoices.
- Find the specific invoice, then select Receive Payment under the Action column.
- From the Payment method dropdown, choose between credit card, debit, PayPal, Venmo, or ACH bank transfer.
- Under the Deposit to dropdown, select the account you put the payment into.
- Enter and review all the information. Then, click Save and Close.

On the other hand, you'll want to seek additional guidance from our QuickBooks Live Expert Assisted team to help you manage customer invoices.
In addition, you can run sales-specific reports to track customer balances and your overall financial data.
We'll be available on this thread for any additional queries.