Transcript Document
CHAPTER 5 The Market Strikes Back PowerPoint® Slides by Can Erbil © 2004 Worth Publishers, all rights reserved What you will learn in this chapter: Why does the government intervene in markets? What are the common tools of government intervention? What happens when the government intervenes? Price controls Price ceiling Price floor Quantity controls— quota Inefficiency Excise tax Excess burden Tax incidence Deadweight loss 2 The Market for Apartments in the Absence of Government Controls Without government intervention, the market for apartments reaches equilibrium at point E with a market rent of $1,000 per month and 2 million apartments rented. 3 The Effects of a Price Ceiling 4 Price ceilings cause inefficiency! A market or an economy is inefficient if there are missed opportunities: Some people could be made better off without making other people worse off. Price ceilings often lead to inefficiency in the forms of: Inefficient allocation to consumers Wasted resources Inefficiently low quality They also produce black markets. 5 The Market for Butter in the Absence of Government Controls Without government intervention, the market for butter reaches equilibrium at a price of $1 per pound and with 10 million pounds of butter bought and sold. 6 The Effects of a Price Floor 7 Price Floors Cause Inefficiency! The most familiar price floor is the minimum wage. Price floors are also commonly imposed on agricultural goods. Price floors often lead to inefficiency in the forms of: Inefficient allocation of sales among sellers Wasted resources Inefficiently high quality They can also can provide an incentive for illegal activity (Ex.: black labor, paying under the table). 8 Controlling Quantities A quantity control, or quota, is an upper limit on the quantity of some good that can be bought or sold. The total amount of the good that can be legally transacted is the quota limit. A license gives its owner the right to supply a good. Example: Market for taxi rides in New York City 9 The Market for Taxi Rides in the Absence of Government Controls Without government intervention, the market reaches equilibrium with 10 million rides taken per year at a fare of $5 per ride. 10 Effect of a Quota on the Market for Taxi Rides 11 A quota drives a wedge between the demand price (the price paid by buyers) and the supply price (the price received by sellers) of a good. The difference between the demand and supply price at the quota limit is the quota rent, the earnings that accrue to the license-holder from ownership of the right to sell the good. It is equal to the market price of the license when the licenses are traded. Like price controls, quantity controls create inefficiencies and encourage illegal activity. 12 Excise Taxes Excise taxes are taxes on the purchase or sale of a good. They have effects similar to quotas: raise the price paid by buyers and reduce the price received by sellers, and drive a wedge between the two. Examples: Excise tax levied on sales of taxi rides and excise tax levied on purchases of taxi rides 13 Effect of an Excise Tax Levied on the Sales of Taxi Rides 14 Effect of an Excise Tax Levied on the Purchases of Taxi Rides 15 The incidence of a tax is a measure of who really pays it. Who really bears the tax burden (higher prices to consumers and lower prices to sellers) does not depend on who officially pays the tax. Depending on the shapes of supply and demand curves, the incidence of an excise tax may be divided differently. The wedge between the demand price and supply price becomes the government’s tax revenue. 16 The Revenue from an Excise Tax Area of the shaded rectangle: $2 per ride × 8 million rides = $16 million. 17 Excise taxes also cause inefficiency: excess burden or deadweight loss. This excess burden, or deadweight loss, means that the true cost is always larger than the amount paid in taxes. Excise taxes prevent some mutually beneficial transactions. They also encourage illegal activity in attempts to avoid the tax. 18 The End of Chapter 4 coming attraction: Chapter 5: Elasticity 19