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Definition

An invoice is a document that records a commercial transaction between a seller and a buyer. It states what was sold, the quantities, the prices, the applicable taxes, and the total amount due.

Purpose

Invoices drive the billing and collection cycle. They serve as the legal record of a sale or purchase.

Relationships

  • Each invoice belongs to a contact (customer or supplier).
  • Each invoice line references a product and a tax rate.

Endpoints