Invoice is a nonnegotiable commercial instrument issued by way of a seller to a buyer. It identifies both the trading parties in addition to lists, describes, and quantifies those things sold, shows the actual date of transport and mode regarding transport, prices in addition to discounts, and delivery and payment terminology. Running your business entails self-discipline and close monitoring of your products, services, acquisitions and etc. Here are the important things you need to include in you invoice template: Company details, Invoice number, Dates, Client Details, Fees, Payment Terms etc.