Hey there lesthiessen-hotm,
Thanks for reaching out to us here and Welcome to the QuickBooks Community! QuickBooks Online is a great software to have. It allows you to create sales receipts for your customers. Let me show you how.
To create a Sales receipt,
1-Click on the New button
2-In the Customers column, select Sales receipt
3-Fill out the required information and click on Save at the bottom right hand corner
You can then send it to your customer by email, or you can print a copy for them.
If you have any other questions, feel free to reach out here.