Can I change the due date on invoices?

Yes, you can, bmthharris.

I'm here to walk you through the steps of changing the due date of your invoices in QuickBooks Online. 

1. Go to Get paid & pay or Sales, then Customers.
2. Select Invoices.
3. Locate the invoice you'd like to modify the due date.
4. Choose Edit invoice.
5. Change the due date.
6. Click Save and close.
7. Repeat steps 3-6 for the other invoices.

Once the customer makes a payment on the invoice, you can track the fund easily in the program.

Additionally, I've added an article that'll help you gently remind customers about invoice due dates: Send Invoice Reminders Automatically or Manually.

Please keep us posted if you need additional assistance tracking or managing your sales transactions. It's my priority to ensure your record is accurate.