A proforma invoice is a document that is used to request payment in advance of the delivery of goods or services. It is typically issued by a supplier to a customer and outlines the terms of the sale, including the description and quantity of the goods or services being sold, the price, and any applicable taxes or fees.

A proforma invoice is not a legally binding document, but it serves as a useful tool for both the supplier and the customer. For the supplier, it helps to secure payment in advance and helps to confirm the details of the sale. For the customer, it provides a clear understanding of the terms of the sale and helps to facilitate the payment process.

Proforma invoices are often used in international trade, as they provide a clear and detailed record of the goods or services being sold and the terms of the sale. If you have any questions about proforma invoices or need help with the payment process for goods or services, you may want to consult with a financial or legal professional.