A receipt is a business document given by a company to a buyer when he pays for goods or services. The receipt includes particulars of the transaction and the sum paid. It constitutes confirmation that payment for the transaction has been received from the buyer.
Difference between Invoice and Receipt - A Quick Explanation
The main difference between a receipt and an invoice is that a receipt is given to the buyer only after he actually pays, while an invoice can be given to the buyer before payment is received. An invoice does not constitute confirmation that the money has actually been paid.