Every brand, no matter how big or small, has a logo. The invoice logo helps customers and other parties identify that this is a certain brand and they have a specific logo that represents them. Most invoices have logos so that it is clear where the buyer has purchased from. For example, a factory that turns raw cloth into finished goods buys its raw material from its supplier and receives an invoice. That invoice may have the brand's logo on it, so it helps in distinguishing a business from others. It is given a small spot on the top of the invoice. The invoice logo could be on the top left, center, or right side of the invoice.