Invoice

A commercial document issued by a seller to a buyer, detailing the products or services provided, their quantities, and the agreed-upon prices. It serves as a formal request for payment and typically includes important information such as the invoice number, date of issuance, payment terms, and due date. Invoices also often list any applicable taxes, discounts, and the total amount due. They are essential for accounting and record-keeping, helping both parties track transactions, manage cash flow, and fulfill legal and tax obligations. In digital and cryptocurrency transactions, invoices may also include wallet addresses and QR codes for facilitating payments.