A sale is a transaction between two or more parties that involves the exchange of tangible or intangible goods, services, or other assets for money. In some cases, assets other than cash are paid to a seller.

In the financial markets, a sale can refer to an agreement made by a buyer and a seller regarding a financial security, its price, and specific arrangements for its delivery.

Regardless of the context, a sale is essentially a contract between a seller of a product or service and a buyer who is willing to pay a specified amount for it.