In the world of business and finance, invoices play a crucial role in facilitating transactions and ensuring timely payments. However, not all invoices are created equal. Two common types of invoices, the proforma invoice and the standard bill, serve different purposes and have distinct characteristics. In this article, we will delve into the basics of invoicing, define what a proforma invoice and a standard bill are, explore their key differences, and discuss their respective roles in international trade and day-to-day business operations.