The point of sale is the point in time when a sale is considered to be complete. In a retail environment, the point of sale is at the cash register, when goods are transferred to the buyer. Or, in a service environment, the point of sale is when the service being provided is considered to be complete. From an accounting perspective, revenue is typically recognized at the point of sale, though additional accounting rules may apply that defer the point at which revenue can be recognized.
From a retailing perspective, the point of sale is the location at which a purchasing decision is made, such as at a store or on a Website store. The point of sale within a physical store is typically surrounded by additional opportunities for shoppers to engage in impulse purchases.