Robert F. Mulligan, Ph.D. WESTERN CAROLINA
UNIVERSITY COLLEGE OF BUSINESS Department of Accountancy, Finance, Information Systems, & Economics |
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chapter seventeen public
choice theory and The Economics of taxation |
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This chapter
includes a study of public choice theory, an economic analysis of government
decision making, and selected topics related to public expenditures and tax
revenues. The theoretical discussion
includes an examination of the inefficiency of voting outcomes, interest‑group
influence, political logrolling, and the paradox of voting outcomes. The median-voter model is considered. Also examined is public sector failure, or
the failure of public decisions to promote the general welfare. Attention is then
focused on how public goods are financed.
The ability‑to‑pay vs. the benefits‑received
principles of taxation are evaluated.
Progressive, proportional, and regressive taxes are defined and
illustrated with examples. The
concepts of tax incidence and efficiency loss are also reviewed. This chapter concludes with a discussion of
the structure of the U.S. tax system. |
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Concept
Illustration … Rent Seeking The French
economist Frédéric Bastiat (1801-1850) is remembered for his wit and capacity
to point out absurdities in
the arguments of his opponents. In the following passage, he satirizes appeals
to government for special benefits at someone else’s expense, or what today
we call "rent-seeking." His message is timeless: When rent-seekers
succeed, it is often at the expense of the general interest. When,
unfortunately, one has regard to the interest of the producer, and not to
that of the consumer, it is impossible to avoid running counter to the
general interest, because the demand of the producer, as such, is only for
efforts, wants, and obstacles. I
find a remarkable illustration of this in a Bordeaux newspaper. Should
the proposed railway from Paris to Madrid offer a solution of continuity at
Bordeaux? [Mr.
Simiot argues that] the railway from Paris to Bayonne should have a break at
Bordeaux, for if goods and passengers are forced to stop at that town,
profits will accrue to bargemen, pedlars, commissionaires, hotel-keepers, etc. Here
we have clearly the interest of labour put before the interest of consumers. But if Bordeaux has a right to profit by a
gap in the line of railway, and if such profit is consistent with the public
interest, then Angoulême, Poitiers, Tours, Orleans, nay, more, all the
intermediate places, Ruffec, Châtellerault, etc., should also demand gaps, as
being for the general interest, and, of course, for the interest of national
industry; for the more these breaks in the line are multiplied, the greater
will be the increase of consignments, commissions, transhipments, etc., along
the whole extent of the railway. In this way, we shall succeed in having a
line of railway composed of successive gaps, and which may be denominated a Negative Railway. The principle of restriction is the very same as the principle of gaps; the sacrifice of the consumer’s interest to
that of the producer, in other words, the sacrifice of the ends to the means. (1) 1Frédéric Bastiat, Economic
Sophisms (Edinburgh: Oliver & Boyd, Ltd., 1873), pp. 80-81, abridged. |
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I. Introduction A. Learning
objectives – In this chapter, students should learn to: 1. Explain the
problems created with majority voting and the median-voter outcome. 2. State four
reasons given by public choice theorists for government’s inefficiency in
providing public goods and services. 3. Differentiate
between the benefits-received and ability-to-pay principles of taxation. 4. Identify which
taxes are progressive, proportional, and regressive. 5. Describe how
elasticities of demand and supply are related to the incidence of a sales or
excise tax. 6. Explain the
relationship between the elasticities of demand and supply and the efficiency
loss of a particular tax. 7. Describe the
probable incidence of the personal income tax, corporate income tax, sales
and excise taxes, and property tax. 8. Explain the U.S.
structure relative to the progressivity or regressivity of Federal, state,
and local taxes. 9. Define and
identify the terms and concepts listed at end of the chapter. B. In the last chapter we examined some
examples of market failure in the private sector and the government policies
designed to remedy them. This chapter
examines more closely the public sector and its failures that elicit
disenchantment. C. This chapter deals with two main topics: a. “Public choice theory” is the economic
analysis of government decision-making that helps us to understand public
sector problems. b. The economics of taxation. |
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II. Revealing
society’s preferences through majority voting is the way collective decisions
are made in a democracy. A. Majority voting can lead to inefficient
outcomes; that is, the majority can defeat a proposal that would have
provided greater benefits than costs and adopt one that costs more than the
benefits it provides (Figure 17.1). 1. Illustration of an inefficient “no” vote
result: Suppose there are 3 voters who each will have to pay $300 in tax if a
proposal is adopted. It is worth $700
to one, $250 to the second and $200 to the third. The second and third voters will vote “no”
and defeat the proposal despite the fact that the total benefits ($1150)
exceed the $900 cost. 2. Illustration of an inefficient “yes” vote
result: Take the same three voters as above and the same level of
taxation. Now the proposal is worth
$100 to the first voter and $350 to each of the others. The vote will be 2 to 1 in favor of the
proposal even though the total benefit of $800 is less than the $900 cost. 3. Conclusion:
The problem is that the one‑person one‑vote rule does not
measure intensity of preferences, so the result may not be economically
efficient. B. Interest groups may improve the economic
efficiency of results by registering intense feelings with elected
representatives or by organizing major efforts to get the vote to go their
way. C. Logrolling or vote trading may also secure
favorable decisions for those who feel strongly about certain issues, but it
may also negate an efficient outcome in favor of a special interest group
where the value of the benefits received does not justify the cost. The efficiency of the outcome will depend
on the circumstances. D. The paradox of voting is that society may
not be able to rank its preferences consistently through majority voting. 1. Table 17.1 demonstrates a situation in
which three voters have expressed their rankings of three public projects;
each has a different ranking. If
voting is done on pairs of projects, it can be shown that national defense will
win over roads, and roads will win over weather warning systems. But the logical conclusion that the
community prefers national defense to weather warning systems is not the
case—they would each get the same number of points (if points were awarded
for a 1st, 2nd, and 3rd choice). In
other words, if one choice must receive a majority of the votes, there will
not be a consistent outcome in this case unless somehow the strengths of the
rankings can be measured. 2. Government might find it difficult to
provide the “correct” public goods by acting in accordance with majority
voting. E. The median-voter model suggests that under
majority rule the median voter will in a sense determine the outcomes of
elections. The median voter is the
person holding the middle position on an issue. 1. The textbook example has three voters
deciding among three types of weather warning systems. The first is willing to spend $400; the
second, $800; the third, $300. The
median-voter model suggests that the $400 proposal will win. In a choice between the $400 and $800
proposal, the first and third will vote for the $400 type. In a choice between the $400 and $300, the
first and second will vote for the $400 type.
In other words, both extreme voters prefer the median choice rather
than the other extreme, so the median voter will tend to predominate. 2. Real-world
examples occur in political positions where candidates seem to aim their
appeal at the median voters within each party to get the nomination and later
at the middle of the population in an effort to win the election. 3. Implications of the median-voter model: a. Many people will be dissatisfied by the
extent of government involvement in the economy. b. Some people may “vote with their feet” by
moving into political jurisdictions where the median voter’s preferences are
closer to their own. c. Median preferences can change over time. |
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III. Government
failure can occur as well as market or private sector failure. The fact that the latter exist does not
mean that the public sector improves efficiency. A. Special interests and “rent seeking” may
promote the interests of a small group at the expense of society at large. 1. The special-interest effect refers to the
situation where a small number of people will receive large gains at the
expense of a much larger number of people who individually suffer small
losses. The small group will be well
informed and highly vocal on the issue and press politicians for
approval. The large numbers who will
each suffer small losses will not have the incentive to be informed or feel
strongly. The result is that the
politician will support the special‑interest program, whose supporters
will notice the vote in their favor, and ignore the majority who don’t feel
strongly. 2. Pork-barrel politics is an example of the
special-interest effect. In this case,
the benefit goes to a single political district and to the politician from
that political district. The cost of
the project is spread out to many individuals who will never receive the
benefits. Pork-barrel politics is
often combined with logrolling. 3. Rent-seeking behavior occurs when a
transfer of wealth at someone else’s or society’s expense occurs through
government action. Here the term
“rent” means any payment to a resource supplier, business, or other organization
above that which would accrue under competitive market conditions. Examples include tax loopholes that benefit
only certain groups; public works projects that cost more than the benefits
they yield; and occupational licensing that requires more than is necessary
to protect consumers. B. Clear benefits, hidden costs (or the
reverse, immediate costs and future more vague benefits) are another dilemma
for politicians trying to decide on public programs. Where the benefits are recognizable and
popular, the politician may vote for the program even if the costs exceed
these benefits if the costs are diffuse or hidden. C. Limited and bundled choice is another
problem with public goods. The voter
must choose between a few candidates who will have the power to select the
public goods and services to be financed by the voter’s tax money. The choices are “bundled” in that the
limited set of candidates will govern over a variety of issues, and the
voter’s preferences may not perfectly align with any candidate. In the private sector, the consumer has a
multitude of choices available, and can generally separate out those goods
and services not desired. D. Bureaucracy and inefficiency can be another
problem in the public sector because there is not the profit motive or
competitive pressure to perform efficiently.
Ironically, the typical response of government to a program’s failure
may be to increase its budget and staff. 1. Government employees, together with the
special-interest groups they serve, often have the political clout to block
attempts to pare down or eliminate their agencies. 2. There
is a tendency for government bureaucracy to justify continued employment by
looking for and eventually finding new problems to solve. E. Imperfect institutions exist in both the
public and private sectors, which often makes it difficult to decide which
institutions would perform best in the production of certain goods and
services. |
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IV. Apportioning the tax burden and
deciding how the public sector should be financed is also a complex question. A. Benefits received vs. ability to pay
principle of taxation. 1. The benefits‑received principle
asserts that households and businesses should be taxed in relationship to the
services they receive. For example,
gasoline taxes are earmarked for highway construction and maintenance. a. How can the government decide which
citizens receive how much benefit from less divisible public goods like
national defense? b. Government efforts to redistribute income
would be self‑defeating if the benefits‑received principle of
taxation were applied universally—welfare recipients would have to pay for
their welfare at the extreme version of this. 2. The ability-to-pay principle asserts that
the tax burden should rest more heavily on those with greater income and
wealth. The rationale is that those
people with much income or wealth will value their marginal dollars less than
those with low incomes, where each dollar is very meaningful. B. Progressive, proportional, and regressive
taxation systems relate to the above issues.
(Key Question 7) 1. A tax is progressive if its average rate
increases as income increases; the tax grows absolutely with income and also
proportionately. 2. A tax is proportional if its average rate
remains the same; the tax payment grows absolutely with income but remains
the same proportionate to income. 3. A tax is regressive if its average rate
declines as income increases; the tax may or may not increase in the absolute
amount, but it declines in proportion to income. C. Applications in existing tax structure: 1. The federal personal income tax is mildly
progressive, with marginal tax rates ranging from 10 to 35 percent in 2008. Certain deductions that favor high-income
groups erode the progressivity of this tax. 2. Sales taxes are not as proportional as they
seem if they are on all goods. A
general sales tax is regressive because, although everyone pays the same
percent on expenditures, the rich tend to spend a much smaller fraction of
their incomes, while the poor may spend all of their incomes. Therefore, the rich will pay a smaller
overall proportion of their income in sales taxes. 3. The federal corporate income tax is
essentially a flat-rate tax with a set rate, but if it is passed on to
consumers in the form of higher prices it may actually be regressive in its
impact. 4. Payroll
taxes are regressive. The Social Security
portion of the tax (6.2 percent) is not applied to income above a certain
level ($94,200 in 2006). On the other
hand, the Medicare tax (1.45 percent) is applied to all wage income. A person making $94,200 pays 7.65 percent
($7206) of his or her wage income; a person making $188,400 pays only 4.55
percent ($8572) of his or her wage income.
5. Property taxes tend to be regressive
because landlords pass along this cost to tenants who have lower incomes;
housing costs are a larger proportion of income for the poor than for the
rich, so economists estimate that the property tax on that housing would end
up being a greater proportion of low incomes than of high incomes. |
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V. Tax
Incidence and Efficiency Loss A. Tax incidence refers to who actually bears
the economic burden of a tax (Figure 17.2). 1. The division of the burden is not
obvious. Figure 17.2 shows the impact
of a $2 per-bottle tax on wine that was priced at $8 per bottle before the
tax. 2. S is the no-tax supply situation and St is
the after-tax supply curve. The new
equilibrium price rises to $9, not $10 as one might expect with the $2 tax. a. Consumers pay $1 more per bottle. b. Producers receive $1 less per bottle. 3. In this example, consumers and producers
share the burden of the tax equally.
The incidence is not completely on either one. B. Elasticities of demand and supply explain
the incidence of an excise or sales tax. 1. Given supply, the more inelastic the demand
for the product, the larger the portion of the tax is shifted forward to
consumers (Figure 17.3b). Figure 17.3a
shows the situation if demand is more elastic. 2. Given demand, the more inelastic the supply
(Figure 17.4b), the larger the portion of the tax borne by producers or
sellers. Figure 17.4a shows the
situation if supply is more elastic. C. Efficiency loss is one result of an excise
or sales tax. 1. Figure 17.5 illustrates the concept of
efficiency loss, which occurs as a result of an excise tax or sales tax. The efficiency loss is the reduction of
well‑being that occurs because there will be less produced at the
higher price caused by the tax. It is
the sacrifice of net benefit accruing to society because consumption and
production of the taxed product are reduced below their allocatively
efficient levels. 2. Elasticities play a role in determining the
extent of the efficiency loss. Other
things being equal, the greater the elasticities of supply and demand, the greater
the efficiency loss of a particular tax. 3. Qualifications to the analysis relate to
the idea that the goals of tax policy may be more important than the goal of
minimizing efficiency losses from taxes.
Two examples are given. a. Redistributive goals—Excise taxes placed on
luxury items in 1990 resulted in efficiency losses, but the benefits from
redistributing income from the wealthier consumers who buy luxury items may
have been worth the loss in efficiency.
However, these luxury taxes were unpopular and have been repealed. b. Reducing
negative externalities—If there is less alcohol and tobacco consumption as a
result of excise taxes, the taxes may have socially desirable consequences. D. Probable incidence of U.S. taxes is
estimated for various taxes. 1. The personal income tax generally falls on
the individual except for those who can control the price of their labor
services and pass on the cost of the tax through higher fees. 2. The incidence of the corporate income tax
is uncertain. Some corporations may be
able to shift the burden by charging higher prices; others may find there is
decreased profitability and the burden is then borne by stockholders. 3. Excise taxes can be shifted to the consumer
where demand is inelastic. This is
true generally with the small range of products on which excise taxes are
levied (gasoline, cigarettes, and alcoholic beverages). However, because sales taxes cover such a
wide range of products, the incidence of sales taxes is just as likely to
fall on the seller—it depends on the respective elasticities of demand and
supply for the product. 4. The incidence of property taxes may fall on
the property owner, or in the case of rental and business property, the tax
would be largely shifted onto the tenant or the customer. 5. Global Perspective 17.1 indicates that the
U.S. is less dependent upon sales and excise taxes than many other
industrialized nations. E. Table 17.2 summarizes the discussion of the
shifting and incidence of taxes. |
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VI. The
U.S. Tax Structure A. It is difficult to determine the overall
progressivity or regressivity of the American tax structure. Disagreement among economists persists. B. The Federal tax system: The system is progressive. 1. In 2005, the average Federal tax rate for
the 20 percent of taxpayers with the lowest incomes was only 4.3
percent. The tax rate for the 20
percent of the taxpayers with the highest income was 25.5 percent. The tax rate was 27.4 percent for the top
10 percent of tax payers and 31.2 percent for the top 1 percent. 2. This progressivity is offset by the Social Security
tax, which is regressive. Because of
the cap of $94,200, taxpayers who earn more, pay a lower percent of their
income as tax than do lower and middle income earners. C. The state and local tax system: State and local tax structures are largely
regressive as a percentage of income.
Both sales and property taxes fall as a proportion of income when
income rises. D. Combined Tax Structure: Overall, the American tax structure is
slightly progressive. The American
system of taxes and transfer payments does reduce income inequality and is
estimated to quadruple the incomes of the poorest one-fifth, which makes the
tax-transfer system more progressive than the tax system alone. |