1. Ch. 6: Markets in Action. Price ceiling and inefficiencies.
Price floors (minimum wage) and inefficiency.
Sales tax
Volatility of farm prices and revenues
How production subsidies and quotas influence farm production, costs, and prices

2. The effect of price ceilings.
Price ceiling is a “maximum” price.
A price ceilinig is “binding” only if ceiling is below equilibrium price.
A binding price ceiling causes a shortage.

3. SR & LR effects without price ceiling
Suppose equilibrium price of gasoline is $4 and a hurricane destroys numerous refineries. Examine SR & LR effects on price and quantity. S $4
S-LR D

4. Compare outcomes with and without a price ceiling at $4
Shortage
Effect on consumer’s surplus
Effect on producer’s surplus
Deadweight loss
Black markets, search costs, enforcement costs S $6 $5 $4
S-LR D
100
200
Millions of gallons per day

5. Suppose the equilibrium price of gasoline is $5 after the hurricane
Suppose the equilibrium price of gasoline is $5 after the hurricane. Compared to the case where government does not intervene, a price ceiling of $4 would cause
Both producers and consumers to be worse off.
Producers to be worse off, but consumers could be better or worse off.
Consumers to be worse off, but producers could be better or worse off.
Consumers to be better off, but producers to be worse off. 0% 30

6. Based on the diagram below, assuming no black markets or search costs, a price ceiling of $4 would make consumers
$50 million better off
$50 million worse off
$100 million better off
$100 million worse off $6 $5 $4
S-LR 0% D 30
100
200
Millions of gallons per day

7. Based on the diagram below, assuming no black markets or search costs, a price ceiling of $4 would make prodcuers
$50 million better off
$50 million worse off
$150 million better off
$150 million worse off $6 $5 $4
S-LR 0% D 30
100
200
Millions of gallons per day

8. Suppose the equilibrium price of gasoline is $4 and a hurricane wipes out some gasoline refineries. The shortage caused by the price ceiling will be greater if the demand for gasoline is
Both producers and consumers to be worse off.
Producers to be worse off, but consumers could be better or worse off.
Consumers to be worse off, but producers could be better or worse off.
Consumers to be better off, but producers to be worse off. 0% 30

9. Minimum Wage Is a price floor on labor. Why is there a minimum wage?
Would a higher minimum wage make workers better off?
Efficiency versus equity

10. The Labor Market and the Minimum Wage
Minimum wage is
a price floor.
Price floor is “binding” only if it is above equilibrium price.

11. The Labor Market and the Minimum Wage
A “binding” price floor
reduces consumer (employer) surplus
Could increase or decrease producer (employee) surplus
Creates a deadweight loss
Destroys some of the producer surplus (employee) through search activity.

12. The Effect of Price Floors
In general, a “binding” price floor will result in:
a. Buyers (employers) are worse off
b. Sellers (employees) could be better or worse off.
c. A deadweight loss.

13. Based on the diagram in the previous slide, if a price floor is imposed at $3, there would be
a surplus of 500
a surplus of 1000
A shortage of 500
A shortage of 1000 0% 30

14. No better or worse off $250 better off $750 worse off $500 better off.
Based on diagram in the previous slide, compared to the case where there is no price floor, a price floor of $3 would make sellers
No better or worse off
$250 better off
$750 worse off
$500 better off. 0% 30

15. No better or worse off $250 better off $750 worse off $500 worse off.
Based on diagram in the previous slide, compared to the case where there is no price floor, a price floor of $3 would make buyers
No better or worse off
$250 better off
$750 worse off
$500 worse off. 0% 30

16. Based on diagram in the previous slide, a price floor of $3 would cause a deadweight loss of:$0
$250
$500
$750 0% 30

17. Taxes
Tax Incidence
the division of the burden of a tax between the buyer and the seller.
When an item is taxed, its price might rise by the full amount of the tax, by a lesser amount, or not at all.
If the price rises by the full amount of the tax, the buyer pays the tax.
If the price rises by a lesser amount than the tax, the buyer and seller share the burden of the tax.
If the price doesn’t rise at all, the seller pays the tax.

18. Taxes Tax Incidence Tax incidence doesn’t depend on tax law.
The law might impose a tax on the buyer or the seller, but the outcome will be the same.
Example: On July 1, 2002, Mayor Bloomberg upped the cigarette tax in New York City from almost nothing to $1.50 a pack.

19. Tax Incidence .

20. Taxes
Tax incidence:
Buyer: $1
Seller : $.50

21. Taxes A Tax on Buyers Tax incidence:
suppose that buyers, not sellers, are taxed $1.50 a pack.
Tax incidence:
Buyer: $1
Seller: $.50

22. Tax Division and Elasticity of Demand
The more inelastic the demand, the larger is the buyers’ share of the tax.

23. Taxes
The more elastic the supply, the larger is the buyers’ share of the tax.

24. Income is lower on average among smokers in Mexico than in the U. S
Income is lower on average among smokers in Mexico than in the U.S. This means that the consumers’ share of a tax on cigarettes would likely be greater in Mexico.
True
False 0% 30

25. The supply of apples is highly inelastic in the short run
The supply of apples is highly inelastic in the short run. Consequently, any tax on apples will be borne primarily by
Apple producers
Apple buyers. 0% 30

26. Taxes Taxes in Practice
Taxes usually are levied on goods and services with an inelastic demand or an inelastic supply.
Alcohol, tobacco, and gasoline have inelastic demand, so the buyers of these items pay most the tax on them.
Labor has a low elasticity of supply, so the seller—the worker—pays most of the income tax and most of the Social Security tax.

27. Taxes
Taxes create allocative inefficiency unless S or D is perfectly inelastic.
What’s effect of tax on
Consumer surplus
Producer surplus
Tax revenue
Deadweight loss
Excess burden of tax
reduction in consumer & producer surplus minus tax revenue
Identical to deadweight loss

28. $2 million Less than $2 million More than $2 million.
Consider the market for insulin. Suppose demand is perfectly inelastic, equilibrium price per dose is $10, and equilibrium quantity is 1 million per year. If a $2 tax is imposed on each dose, the annual tax revenue would be
$2 million
Less than $2 million
More than $2 million. 0% 30

29. Decrease by less than $2 million.
Consider the market for insulin described above. A $2 tax would cause consumer’s surplus to ____.
Not change
Decrease $2 million
Decrease by less than $2 million. 0% 30

30. Decrease by less than $2 million.
Consider the market for insulin described above. A $2 tax would cause producer’s surplus to ____.
Not change
Decrease $2 million
Decrease by less than $2 million. 0% 30

31. Subsidies and Quotas
Fluctuations in the weather bring big fluctuations in farm output.
How do changes in farm output affect the prices of farm products and farm revenues?
How might farmers be helped by intervention in markets for farm products?

32. Stabilizing Farm Revenues
A poor harvest decreases supply.
Effect on total revenue?
higher price
lower quantity
How would answer change if demand were elastic?

33. Stabilizing Farm Revenues
A large harvest increases supply.
Effect on total revenue?
Lower price
Higher quantity
How would answer change if demand were elastic?

34. Stabilizing Farm Revenues
Intervention in markets for farm products takes two main forms:
Subsidies
a payment made by the government to a producer that’s in addition to market price received.
Production quotas
an upper limit on the quantity of a good that may be produced during a specified period.

35. Subsidies Effect of $20 subsidy Equilibrium quantity Equilibrium price
Consumer surplus
Producer surplus
Cost to taxpayers
Deadweight loss

36. The $20 subsidy would cause consumers to be
$500 million better off
$600 million better off
$400 million better off
$400 million worse off 0% 30

37. The $20 subsidy would cause producers to be
$500 million better off
$600 million better off
$400 million better off
$400 million worse off 0% 30

38. The $20 subsidy would cost taxpayers
$1000 million
$1200 million
$500 million
$600 million 0% 30

39. Quotas Maximum production allowed.
Binding only if below equil quantity
limits total production to 40 million tons a year.
Effect on
Price
Consumer’s surplus
Producer’s surplus
Deadweight loss
Price of license

40. Suppose that a “binding” quota on peanuts is imposed. This will
Make consumers worse off, but producers better off.
Make consumers worse off, but producers could be better or worse off.
Make both consumers and producers worse off.
Make both consumers and producers better off. 0% 30

41. Markets for Illegal Goods
How do increased penalties on sellers affect price, quantity?
How do increased penalties on buyers affect price, quantity?
Illegal immigration?