A commission is a fee that a company pays to its sales staff for each sale they make. The amount of the commission is typically a percentage of the total sale price. Commissions provide an incentive for sales staff to make more sales, and can be a significant part of their income. They also help to align the interests of the sales staff with those of the company, as both parties benefit when more sales are made. There are different types of commission structures that companies may use, and these can vary based on factors such as the type of product being sold, the geographical area covered by the sales staff, and the experience level of the salespeople.