In the world of business transactions, invoices play a crucial role in the smooth operation of trade. However, there are different types of invoices, each with its own purpose and characteristics. Two commonly used terms are "proforma invoice" and "invoice". Although they may sound similar, they serve distinctly different functions. In this article, we will explore the nuances between a proforma invoice and an invoice, understand their definitions, examine their key elements, and clarify their purpose and use.