How to record sales invoices in GnuCash Posted on December 18, 2011 by accountinator Leave a comment Use sales invoices when you wish to bill a customer so that you can receive payment later. This YouTube video shows you how to record sales invoices using GnuCash: Leave a comment Cancel replyYour email address will not be published. Required fields are marked *Comment Name * Email * Website Save my name, email, and website in this browser for the next time I comment. Notify me of follow-up comments by email. Notify me of new posts by email.