Invoicing plays a crucial role in the smooth functioning of any business. It is the process of providing a detailed account of the services or products provided to a client and requesting payment for them. Understanding the basics of invoicing is essential for any entrepreneur or freelancer. This guide will take you through the step-by-step process of submitting an invoice, from understanding what an invoice is to avoiding common mistakes. So let's dive in and learn how to submit an invoice like a pro.