We previously used the demand curve to illustrate consumer surplus, the net gains of buyers from market exchanges. The supply curve can be used in a similar manner to illustrate the net gains of producers and resource suppliers. Suppose that you are an aspiring musician and are willing to perform a two-hour concert for $500. If a promoter offers to pay you $750 to perform the concert, you will accept, and receive $250 more than your minimum price. This $250 net gain represents your s. In effect, producer surplus is the difference between the amount a supplier actually receives (based on the market price) and the minimum price required to induce the supplier to produce the given units (their marginal cost).
It’s important to note that producer surplus represents the gains received by all parties contributing resources to the production of a good. In this respect, producer surplus is fundamentally different from profit. Profit accrues to the owners of the business firm producing the good, whereas producer surplus encompasses the net gains derived by all people who help produce the good, including those employed by or selling resources to the firm.