A sales commission is the amount of compensation paid to a person based on the amount of sales generated. This is typically a percentage of sales, which is paid on top of a base salary. A high proportion of sales commission to base pay is intended to draw the attention of the sales staff most forcefully to the need to generate sales. A sales commission may be paid when a sale is generated, or when cash is received from the customer. The latter payment system is the wiser course of action, since it forces salespeople to pay attention to the creditworthiness of customers.