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An invoice from a hardware shop

An invoice is a document used in commerce, particularly in retail. It is made by a person or company who is selling something to a customer (or "buyer"). The invoice is given to the customer as a request for payment. It lists the goods or service provided to the customer, along with the price being charged for each of them.

Once the customer has paid for the goods or services, they may be given a receipt. The receipt is the customer's proof that they have paid for the products. A receipt is not the same thing as an invoice.[1]

From the seller's point of view, an invoice is called the sales invoice. From the buyer's point of view, an invoice is called the purchase invoice.


  • The word invoice
  • Unique reference number
  • Invoice date
  • Credit terms
  • Tax payments
  • Name and contact detail of the seller and buyer
  • Tax or company registration details of seller
  • Date of transaction
  • Purchase order number
  • Description of products
  • Unit prices of products
  • Total amount charged
  • Payment terms


Electronic invoices

  • Open Application Group Integration Specification
  • UBL


  1. Heidi Cardenas; Demand Media. "The Difference Between an Invoice and a Receipt". Houston Chronicle. Hearst Newspapers, LLC. Retrieved 20 February 2014.