My customer has a credit due to a Credit Memo issued. Is it possible to create a check to pay back the customer and at the same time get rid of the credit showing.

Hello there, young. I appreciate you for reaching out to us.

Creating a check to pay back the customer while removing the credit from the account isn't possible in QuickBooks Online. However, let me give a workaround by issuing a refund receipt to that customer. Here's how:

1. Click + New, then select Refund receipt.
2. From the Customer dropdown, choose the customer you want to repay.
3. Enter the details in the fields using the same info from the credit memo.
4. Select the payment method and account you want to use to repay the customer in the Refund from tab.
5. Select Save and close.

For additional information about the process, visit to this link: Void or refund customer payments in QuickBooks Online.

Furthermore, refund or return transactions may incur a fee depending on your price plan and transaction type. Check out the following article for further details: Understand fees for refunds or void transactions.

Please click the Reply button below if you have further concerns with your transactions in QuickBooks Online. We're available 24/7. Take care!

@youngsweld 

@SirielJeaB's advice is incorrect.  That will not remove the credit balance from your customer.

First, write a check (New > Check) to your customer and select Accounts Receivable as the category.  This issues the payment to your customer.  Then, you need to match the payment to the outstanding credit memo.  To do that, receive a payment (New > Receive payment), select the customer, check both the payment made and the credit memo (they will net to zero).  That's it.