An invoice or bill's a commercial document issued by a seller to the buyer, indicating the products, quantities, and agreed prices for products or services the seller has provided the buyer. An invoice indicates the buyer must pay the seller, according to the payment terms. In the rental industry, an invoice must include a specific reference to the duration of the time being billed, so rather than quantity, price and discount the invoicing amount's based on quantity, price, discount and duratio… (More on Invoice)