INVOICE

A non-negotiable commercial document that denotes an itemized transaction between a buyer and a seller. Normally, it has the following information: items sold, price of goods and/or services, parties involved, delivery date, transport mode, invoice number, discounts (if any), and tax information. If goods or services were purchased on credit, it will usually indicates the terms of the deal and give details on the available payment methods. Also called bill, statement, contract of sale, or sales invoice.