pro forma invoice
noun [ C ]
ACCOUNTING, COMMERCE (also proforma invoice) ukus(also pro forma)an invoice, usually one sent to a new customer, asking for payment before goods or services are supplied:
To ensure a swift delivery, please complete the details below and pass this pro forma invoice on to your Accounts Department.
an invoice sent to a possible customer to give an example of prices charged:
Large organisations may request a proforma invoice purely for their internal purchasing approval process.