The file shows a Simple Invoice Form. It is so general that it can be used in almost every business field. In general, an invoice would mainly include four parts, the information about the company, the information about the clients and the most important part of the details of the transaction and the payment information as well. The transaction part usually covers four parts, including the description, quantity, unit price and amount. If you are planning to create an invoice for your clients, you can download this template for free and fill the blank with your company's specific information.