The imposition of a price floor or a price ceiling will prevent a market from adjusting to its equilibrium price and quantity, and thus will create an inefficient outcome. However, there is an additional twist here. Along with creating inefficiency, price floors and ceilings will also transfer some consumer surplus to producers, or some producer surplus to consumers. Show Imagine that several firms develop a promising but expensive new drug for treating back pain. If this therapy is left to the market, the equilibrium price will be $600 per month and 20,000 people will use the drug, as shown in Figure (a). The original level of consumer surplus is T + U and producer surplus is V + W + X. However, the government decides to impose a price ceiling of $400 to make the drug more affordable. At this price ceiling, firms in the market now produce only 15,000. As a result, two changes occur. First, an inefficient outcome occurs and the total surplus of society is reduced. The loss in social surplus that occurs when the economy produces at an inefficient quantity is called deadweight loss. In a very real sense, it is like money thrown away that benefits no one. In Figure (a), the deadweight loss is the area U + W. When deadweight loss exists, it is possible for both consumer and producer surplus to be higher, in this case because the price control is blocking some suppliers and demanders from transactions they would both be willing to make. A second change from the price ceiling is that some of the producer surplus is transferred to consumers. After the price ceiling is imposed, the new consumer surplus is T + V, while the new producer surplus is X. In other words, the price ceiling transfers the area of surplus (V) from producers to consumers. Note that the gain to consumers is less than the loss to producers, which is just another way of seeing the deadweight loss.  Figure (b) shows a price floor example using a string of struggling movie theaters, all in the same city. The current equilibrium is $8 per movie ticket, with 1,800 people attending movies. The original consumer surplus is G + H + J, and producer surplus is I + K. The city government is worried that movie theaters will go out of business, reducing the entertainment options available to citizens, so it decides to impose a price floor of $12 per ticket. As a result, the quantity demanded of movie tickets falls to 1,400. The new consumer surplus is G, and the new producer surplus is H + I. In effect, the price floor causes the area H to be transferred from consumer to producer surplus, but also causes a deadweight loss of J + K. This analysis shows that a price ceiling, like a law establishing rent controls, will transfer some producer surplus to consumers—which helps to explain why consumers often favor them. Conversely, a price floor like a guarantee that farmers will receive a certain price for their crops will transfer some consumer surplus to producers, which explains why producers often favor them. However, both price floors and price ceilings block some transactions that buyers and sellers would have been willing to make, and creates deadweight loss. Removing such barriers, so that prices and quantities can adjust to their equilibrium level, will increase the economy’s social surplus. Learning Objectives
We demonstrated that market equilibrium maximizes social surplus; thus, the equilibrium quantity is the most efficient quantity of output for society. The imposition of a price floor or a price ceiling will prevent a market from adjusting to its equilibrium price and quantity, and thus will create an inefficient outcome. But there is an additional twist here. Along with creating inefficiency, price floors and ceilings also transfer some consumer surplus to producers, or some producer surplus to consumers. In the following interactive graph (Figure 1), we can see this transfer in action: Figure 1 (Interactive Graph). Inefficiency of Price Ceilings. As a result of the transfer of consumer surplus to producers (or producer surplus to consumers), two changes occur. First, an inefficient outcome occurs and the total surplus of society is reduced. The loss in social surplus that occurs when the economy produces at an inefficient quantity is called deadweight loss. In a very real sense, it is like money thrown away that benefits no one. In the last slide of the above activity, you can see the deadweight loss shown as the area U + W. When deadweight loss exists, it is possible for both consumer and producer surplus to be higher, in this case because the price control is blocking some suppliers and demanders from transactions that would be beneficial to both. A second change from the price ceiling is that some of the producer surplus is transferred to consumers. After the price ceiling is imposed, the new consumer surplus is T + V, while the new producer surplus is X. In other words, the price ceiling transfers the area of surplus (V) from producers to consumers. Note that the gain to consumers is less than the loss to producers, which is just another way of seeing the deadweight loss. Let's look at another interactive graph (Figure 2), this time with a price floor instead of a price ceiling: Figure 2 (Interactive Graph). Inefficiency of Price Floors. The net effect of the price floor in the above activity is that the price floor causes the area H to be transferred from consumer to producer surplus, but also causes a deadweight loss of J + K. This analysis shows that a price ceiling, like a law establishing rent controls, will transfer some producer surplus to consumers – which helps to explain why consumers often favor them. Conversely, a price floor like a guarantee that farmers will receive a certain price for their crops will transfer some consumer surplus to producers, which explains why producers often favor them. However, both price floors and price ceilings block some transactions that buyers and sellers would have been willing to make, and creates deadweight loss. Removing such barriers, so that prices and quantities can adjust to their equilibrium level, will increase the economy's social surplus. Source: Lumen Learning, https://courses.lumenlearning.com/wmopen-microeconomics/chapter/inefficiency-of-price-floors-and-price-ceilings/ Do price ceilings cause inefficiency?A price floor or a price ceiling will prevent a market from adjusting to its equilibrium price and quantity, thus creating an inefficient outcome.
When the economy produces at an inefficient quantity due to a price ceiling or price floor there will be a deadweight loss?At this price ceiling, firms in the market now produce only 15,000. As a result, two changes occur. First, an inefficient outcome occurs and the total surplus of society is reduced. The loss in social surplus that occurs when the economy produces at an inefficient quantity is called deadweight loss.
Do price floors cause deadweight loss?Deadweight losses primarily arise from an inefficient allocation of resources, created by various interventions, such as price ceilings, price floors, monopolies, and taxes. These factors lead to the price of a product not being accurately reflected, meaning goods are either overvalued or undervalued.
Is there deadweight loss with a price ceiling?Summary. In the absence of externalities, both the price floor and price ceiling cause deadweight loss, since they change the market quantity from what would occur in equilibrium. This is accompanied by a transfer of surplus from one player to another.
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