In the world of business, invoices play a crucial role in facilitating transactions and ensuring smooth financial operations. An invoice is a document that outlines the details of a sale, including the goods or services provided, their respective prices, and the terms of payment. Being aware of what goes on an invoice is essential for both businesses and customers to maintain transparency and avoid any potential disputes. In this comprehensive guide, we will delve into the different components of an invoice, the legal requirements associated with it, and the importance of understanding its basics.