Principles of Economics II (Microeconomics)

Markets in Action
(2 of 2)

Overview

1. Review

Have you any questions on homework?

2. Course Objectives

Write down course objectives 4 through 6 from  text page 127.

4.

5.

6.

3. Outline

bullet

III. Taxes

A. The question — "Who pays a sales tax: the buyer or seller?" — can be studied with the demand and supply model.

fig7-3.gif (21120 bytes)

1. As illustrated in Figure 7.3, a sales tax shifts the supply curve so that the vertical distance between the supply curves equals the amount of the tax. As a result, the equilibrium price and equilibrium quantity of the good are affected. The price rises from P to and the quantity decreases from Q to

B. In general, the tax is divided between supplier and demander.

1. The buyer pays part of the tax in the form of the higher price, and the seller pays part in the form of lower receipts (the new price minus the tax paid to the government).

C. In extreme cases, the seller or the buyer may pay the entire tax.

1. The seller pays the entire tax if:

a) the demand is perfectly elastic (the demand curve is horizontal).

b) the supply is perfectly inelastic (the supply curve is vertical).

2. The demander pays the entire tax if:

a) the demand is perfectly inelastic (the demand curve is vertical).

b) the supply is perfectly elastic (the supply curve is horizontal).

D. Given the supply curve, the more elastic the demand, the less the demander pays of the tax; and given the demand curve, the more elastic the supply, the less the supplier pays of the tax.

1. Heavy taxes usually are levied on products with an inelastic demand because the quantity purchased does not decrease by much, so the government collects relatively large tax receipts.

E. In general, imposing a tax creates a deadweight loss. (In the extreme case of perfectly inelastic demand or perfectly inelastic supply, the quantity does not change and there is no deadweight loss.)

bullet

IV. Markets for Prohibited Goods

A. The government prohibits trade of some goods, such as illegal drugs.

B. Prohibiting transactions in a good raises the cost of such trading. The impact of the prohibition depends on how effectively the ban is policed and whether the penalty is levied on the buyer, seller, or both. Compared to an unrestricted market:

1. If the penalty is levied on the seller, the penalty is added to the other costs of doing business. Hence the supply curve shifts so that the vertical distance between the initial supply curve and the supply curve with the penalty equals the amount of the penalty. In this case, the equilibrium price of the product rises and the equilibrium quantity decreases.

2. If the penalty is levied on the buyer, the penalty is subtracted from the value of the good. Hence the vertical distance between the demand curve with the penalty and that without is the amount of the penalty. As a result, the equilibrium price of the product falls and the equilibrium quantity decreases.

3. If buyers and sellers face sanctions, both the demand and supply curves shift leftward. If the shift in the supply curve is larger, the equilibrium price rises and quantity decreases; if the shift in the demand curve is larger, the price falls and quantity decreases; if the shifts are the same magnitude, the price is unchanged and the quantity decreases.

C. A prohibited good can be legalized and then taxed so that, compared to free and untaxed trade, the price is higher and the quantity consumed is less. To decrease consumption to the level that occurs when trade is prohibited, a very large tax likely would be necessary. A policy of legalizing and taxing has advantages and disadvantages.

1. An advantage is that the government raises revenues, which can be used for education against the product.

2. A disadvantage is that legalization may signal that use of the good is acceptable, which could increase demand for the product. In addition, if the demand for the product is inelastic, to reduce consumption to the level that occurs with prohibition a high tax is needed, which might lead to tax evasion.

bullet

V. Stabilizing Farm Revenue

A. The demand for farm products is inelastic. Because the demand is inelastic, a poor harvest, which shifts the supply curve leftward, raises total farm revenues; a bumper crop, which shifts the supply curve rightward, lowers total farm revenues.

B. Speculative markets in inventories result in storage of farm products and help limit fluctuations in farm revenues. The mechanism works as follows:

1. Inventory holders speculate by buying when the current price is lower than they expect it to be in the future and selling when the current price is higher than the expected future price.

2. Inventories can be used to absorb output if supply increases or provide it if supply decreases.

3. The (idealized) behavior of inventory owners makes the supply to consumers perfectly elastic at the price expected by inventory holders.

4. A perfectly elastic supply completely stabilizes the price of the product; in reality speculation decreases but does not completely eliminate price fluctuations.

5. Speculation does not stabilize revenue from the product. However, total revenue now increases with bumper crops and decreases with crop failures.

C. Most governments have instituted programs designed to limit fluctuations in the prices of agricultural products. Some of the most extensive programs are in the European Union.

1. These programs can set production limits, that is, quotas, which restrict the quantity produced.

2. These programs also set price floors above the equilibrium price, which creates surpluses. The government must buy the excess supply, which the results in the government owning inventories of agricultural products.

4. PowerPoint Viewgraphs (Slides 63 - 70, 71 - 78, and 79 - 86)

5. Optional Activity - 5. Optional Activity - Visit  www.Econ100.com

6. Optional Activity - 6. Optional Activity - Watch Economics U$A Video #2 - Markets

7. Homework

1.  Review Helpful Hints in your study guide.
2.  Complete even-numbered Questions in your study guide and check your answers.
3.  If you watched the video, write one or more sentence about each of its three episodes which will bring the episodes and lessons learned from them to mind.
4.  If not done in class, complete the Two-Minute-Feedback.

8. Summary of Key Points (from text page 146)

Markets for Prohibited Goods

12.  Penalties on sellers of an illegal good increase the cost of selling the good and decrease its supply. Penalties on buyers decrease their willingness to pay and decrease the demand for the good.

13.  The higher the penalties and the more effective the law enforcement,the smaller is the quantity bought.   The price is higher or lower than the unregulated price, depending on whether  the penalties on sellers or buyers are higher.

14.  A tax set at a sufficiently high rate will decrease the quantity of a drug consumed, but there will be a tendency for the tax to be evaded.


Stabilizing Farm Revenue

15.  Farm revenues fluctuate because supply fluctuates.

16.  The demand for most farm products is inelastic, so a decrease in supply increases the price and increases farm revenue, while an increase in supply   decreases price and decreases farm revenue.

17.  Inventory holders and government agencies act to stabilize farm prices and revenues. 

9. Preview

Organizing Production  introduces the firm, the forms of business organization,  and discusses how firms raise funds by issuing stock and selling bonds.  The chapter explains the differences between explicit and implicit costs which lead to higher measures of profit when calculated by accountants than when measured by economists.  Finally, the chapter introduces the concept of economic efficiency.  

10. Two Minute Feedback

Take a minute and jot down the problem, idea, or concept that was most interesting to you from this chapter.

Take another minute and jot down the problem, idea, or concept with which you struggled the most.

Give the Two-Minute-Feedback to your instructor.

file:  Week 02 Part 2

Notes

Love for Econ springs eternal!

Jets.jpg (18752 bytes)

Overview.htm