1. Government Involvement #1-Price Controls: Floors and Ceilings #2-Subsidies #3-Excise Taxes #4-Externalities 1

2. #1-PRICE CONTROLS Who likes the idea of having a price ceiling on gas so prices will never go over $1 per gallon? 2

3. Q o $5 4 3 2 1 P 10 20 30 40 50 60 70 80 3 D S Shortage (Qd>Qs) Maximum legal price a seller can charge for a product. Goal: Make affordable by keeping price from reaching Eq. Gasoline Does this policy help consumers? Result: BLACK MARKETS Price Ceiling To have an effect, a price ceiling must be below equilibrium

4. Q o $4321$4321 P 10 20 30 40 50 60 70 80 4 D S Surplus (Qd<Qs) Minimum legal price a seller can sell a product. Goal: Keep price high by keeping price from falling to Eq. Corn Does this policy help corn producers? Price Floor To have an effect, a price floor must be above equilibrium

5. Are Price Controls Good or Bad? To be “efficient” a market must maximize consumers and producers surplus Q P D S PcPc QeQe CS PS 5

6. Are Price Controls Good or Bad? To be “efficient” a market must maximize consumers and producers surplus Price FLOOR Q P D S PcPc QeQe Q floor DEADWEIGHT LOSS The Lost CS and PS. INEFFICIENT! CS PS 6

7. Are Price Controls Good or Bad? To be “efficient” a market must maximize consumers and producers surplus Q P D S PcPc QeQe CS PS 7

8. Are Price Controls Good or Bad? To be “efficient” a market must maximize consumers and producers surplus Price CEILING Q P D S PcPc QeQe Q ceiling DEADWEIGHT LOSS The Lost CS and PS. INEFFICIENT! CS PS 8

9. #2 Subsidies The government just gives producers money. The goal is for them to make more of the goods that the government thinks are important. Ex: Agriculture (to prevent famine) Pharmaceutical Companies Environmentally Safe Vehicles FAFSA 9

10. Result of Subsidies to Corn Producers Q o Price of Corn Quantity of Corn 10 S S Subsidy Price Down Quantity Up Everyone Wins, Right? PePe P1P1 QeQe Q1Q1 D

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12. #3 Excise Taxes Excise Tax = A per unit tax on producers For every unit made, the producer must pay $ NOT a Lump Sum (one time only)Tax The goal is for them to make less of the goods that the government deems dangerous or unwanted. Ex: Cigarettes “sin tax” Alcohol “sin tax” Tariffs on imported goods Environmentally Unsafe Products Etc. 12

13. Excise Taxes Q o $5 4 3 2 1 P 13 Supply Schedule PQs $5140 $4120 $3100 $280 $160 D S 40 60 80 100 120 140 Government sets a $2 per unit tax on Cigarettes

14. Excise Taxes Q o $5 4 3 2 1 P 14 Supply Schedule PQs $5 $7140 $4 $6120 $3 $5100 $2 $480 $1 $360 D S 40 60 80 100 120 140 Government sets a $2 per unit tax on Cigarettes

15. Excise Taxes Q o $5 4 3 2 1 P 15 Supply Schedule PQs $5 $7140 $4 $6120 $3 $5100 $2 $480 $1 $360 D S 40 60 80 100 120 140 Tax is the vertical distance between supply curves S Tax

16. Excise Taxes Q o $5 4 3 2 1 P 16 D S 40 60 80 100 120 140 Identify the following: 1.Price before tax 2.Price consumers pay after tax 3.Price producers get after tax 4.Total tax revenue for the government before tax 5.Total tax revenue for the government after tax S

17. #4 EXTERNALITIES 17

18. An externality is a third-person side effect. There are EXTERNAL benefits or external costs to someone other than the original decision maker. Why are Externalities Market Failures? The free market fails to include external costs or external benefits. With no government involvement there would be too much of some goods and too little of others. Example: Smoking Cigarettes. The free market assumes that the cost of smoking is fully paid by people who smoke. The government recognizes external costs and makes policies to limit smoking. What are Externalities? 18

19. Negative Externalities 19

20. Situation that results in a COST for a different person other than the original decision maker. The costs “spillover” to other people or society. Example: Zoram is a chemical company that pollutes the air when it produces its good. Zoram only looks at its INTERNAL costs. The firms ignores the social cost of pollution So, the firm’s marginal cost curve is its supply curve When you factor in EXTERNAL costs, Zoram is producing too much of its product. The government recognizes this and limits production. Negative Externalities (aka: Spillover Costs) 20

21. Video- Whistle Tips 21

22. P Q D=MSB Supply = Marginal Private Cost Q Free Market 22 Market for Cigarettes The marginal private cost doesn’t include the costs to society.

23. P Q D=MSB Supply = Marginal Private Cost Q Free Market 23 Market for Cigarettes Supply = Marginal Social Cost What will the MC/Supply look like when EXTERNAL cost are factor in? Q Optimal

24. P Q D=MSB S=MPC Q Free Market 24 Market for Cigarettes S =MSC Q Optimal At Q FM the MSC is greater than the MSB. Too much is being produced If the market produces Q FM why is it a market failure? Overallocation

25. P Q D=MSB Q Free Market 25 Market for Cigarettes What should the government do to fix a negative externality? Q Optimal S=MPC S =MSC Solution: Tax the amount of the externality (Per Unit Tax)

26. P Q D=MSB Q Free Market 26 Market for Cigarettes What should the government do to fix a negative externality? Q Optimal S=MPC S =MSC Solution: Tax the amount of the externality (Per Unit Tax) =MPC MSB = MSC

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28. Positive Externalities 28

29. Positive Externalities (aka: Spillover Benefits) Situations that result in a BENEFIT for someone other than the original decision maker. The benefits “spillover” to other people or society. (EX: Flu Vaccines, Education, Home Renovation) Example: A mom decides to get a flu vaccine for her child Mom only looks at the INTERNAL benefits. She ignores the social benefits of a healthier society. So, her private marginal benefit is her demand When you factor in EXTERNAL benefits the marginal benefit and demand would be greater. The government recognizes this and subsidizes flu shots. 29

30. P Q D=Marginal Private Benefit S = MSC Q Free Market 30 Market for Flu Shots The marginal private benefit doesn’t include the additional benefits to society.

31. P Q Q FM 31 What will the MB/D look like when EXTERNAL benefits are factor in? Q Optimal D=Marginal Private Benefit S = MSC D=Marginal Social Benefit Market for Flu Shots

32. P Q D=MSB 32 If the market produces Q FM why is it a market failure? S = MSC D=Marginal Social Benefit Q FM Q Optimal Market for Flu Shots

33. P Q 33 Underallocation S = MSC D=Marginal Social Benefit Q FM Q Optimal At Q FM the MSC is less than the MSB. Too little is being produced Market for Flu Shots

34. P Q Q FM 34 Q Optimal D=MPB S = MSC D=MSB What should the government do to fix a negative externality? Subsidize the amount of the externality (Per Unit Subsidy) =MPB Market for Flu Shots

35. Economics of Pollution Why are public bathrooms so gross? The Tragedy of the Commons (AKA: The Common Pool Problem) Goods that are available to everyone (air, oceans, lakes, public bathrooms) are often polluted since no one has the incentive to keep them clean. There is no monetary incentive to use them efficiently. Result is high spillover costs. Example: Over fishing in the ocean 35

36. Perverse Incentives 1.In 1970, the government tried to protect endangered woodpeckers by requiring land developers to report nests on their land to the EPA. The population of these bird decreased. Why? Land owners would kill the birds or else risk lengthy production delays. ( Known as “Shoot, Shovel, and Shut Up” ) 2.Assume the government wanted to limit a firm from polluting. They tell them they will inspect them twice and they must reduce pollution by 5%. The amount of pollutants would increase. Why? These firm will have the incentive to pollute more prior to inspection. Are their “market solutions” to these problems? 36

37. How can markets and self interest help to limit pollution? Government can sell the right to pollute 100 200 50 100 Assume the lake can naturally absorb 500 gallons of pollutants each year Now what does each firm have the incentive to do? The Gov’t sells each firm the right to pollute a set number of gallons