Hi there, @MohicanMomma.

Thank you for joining the Community. I'd be happy to help you write off bad debt if you're on a cash basis.

You can enter a credit memo instead of receive payments. The credit amount can be issued in your customer's account as a return and apply it to their invoice. This way, it clears the amount out from your accounts receivable and reduces your net profit. 

Here's how: 

1. From the Customers menu, select Create Credit Memos/Refunds.
2. From the Customer:Job drop-down, select the customer name.
3. Enter the items, then select Save & Close.
4. On the Available Credit window, select Apply to an invoice.
5. Click OK.
6. On the Apply Credit to Invoices window, select the transaction.
7. Click Done.

After that, you can run a Cash Basis Profit & Loss Detail report to make sure the total is 0.

For more details, please check the articles below:

• Record a credit memo or refund in QuickBooks Desktop 
• Customize reports in QuickBooks Desktop 

Also, The phone support agents will be able to assist you in getting this resolved.

1. Go to https://help.quickbooks.intuit.com/en_US/contact
2. Select QuickBooks for Windows.
3. Select your QuickBooks for Windows version.
4. Select a topic.
5. Click on the Get Phone Number button.

That should get you back on track.

I'm just a post away if you should have any other questions about how to write off bad debt. I'll be happy to help you out. Wishing you well.