An invoice is a commercial document issued by a seller to a buyer, relating to a sale transaction and indicating the products, quantities, and agreed prices for products or services the seller had provided the buyer.
Terms and conditions are the rules and regulations that govern a contract or agreement between two parties. They can include things like payment terms, delivery terms, and warranty information. Sample invoices with terms and conditions provide buyers with a clear understanding of the terms of the sale, and can help to avoid disputes down the road.