Receipts and invoices both deal with payment transactions, but in different ways. While receipts are proof of payment given after a transaction, invoices are requests for payment. A seller gives a customer a receipt for a purchase, and a seller or contractor provides an invoice for their work or goods provided to a customer. Both receipts and invoices can include itemized lists of products or services; however, receipts list the buyer’s purchased items, and invoices list the amount owed for products or services (including the hourly rate and number of hours worked), pending payment.