Description: detail of each item sold or service provided.Buyer: person or company purchasing the goods or services.Seller: person or company offering goods or services.Invoices are used by a person or company (offering goods or services) to tell a buyer that payment is now due.Ī basic invoice should include the following details: Download Above Template (Excel & Word) Otherīelow you can find more invoice templates and help with how to write one:Īn invoice is a request for payment for itemized goods and services sent from a seller to a buyer.