Proforma Invoice is a quote used in international trade to present the price of goods or services. It is used to provide customers with the price and terms of goods or services before actually selling them. The proforma invoice is similar to an invoice but has no legal effect. The main differences between a proforma invoice and a commercial invoice are the timing of issuance and legal effect. A proforma invoice is a quote provided before actually selling goods or services, with no legal effect. A commercial invoice is an invoice for the actual sale of goods or services, serving as evidence of the transaction and having legal effect for tax and other purposes.
Source : ChatGPT