Hi there, @DIETRYING.

Let me assist you in handling situations where your customer may not pay the remaining balance. Here's what you can do.

When you need to write off uncollectible invoices in QuickBooks, you need to record them as bad debts. Here's how:

1. Create a Bad debts expense account in the Chart of Accounts.
    

   

2. Create a bad debt non-inventory item through the Products & Services page. Choose Bad debts as the Income Account.
    

   

3. Create a credit memo for the customer and the balance difference as the amount for the Bad debt non-inventory item.
4. Apply the credit memo to the invoice by creating a Receive Payment transaction, and selecting the customer and their invoice. From the Credits section, select the credit memo. Hit Save and Close.

For a more detailed procedure for writing off bad debts, you can check this article: Write off bad debt in QuickBooks Online

If you have a liability loan, you can also consider setting up a loan in QuickBooks Online.

I'm always available to assist you further with your inquiries about writing off bad debts in QuickBooks Online. Feel free to leave a reply!