A recurring invoice is one that is sent to the same customer repeatedly over a certain period of time. When we talk about recurring invoices, we are talking about invoicing software, because invoices can be generated automatically. With our invoicing software you can create recurring invoices and save time. The recurring invoice is the way to streamline and automate a regular process of sending invoices that, if it did not exist, would make the life of the self-employed or entrepreneur more complicated.