Hello there, Jack68. The option to generate an actual payment receipt isn't available in the QuickBooks Sole Trader. However, you can resend the paid invoice. This way, your customer receives an email containing a View receipt button.

This link directs them to a summary page showing a zero balance due, along with the option to download a PDF copy of the invoice clearly marked with a Paid in Full status label. This serves as official proof of payment for their records.
You can reply below if you have additional questions. We’re here to help.