Public Finance

I

Introduction

Public Finance, field of economics concerned with how governments raise money, how that money is spent, and the effects of these activities on the economy and on society. Public finance studies how governments at all levels—national, state, and local—provide the public with desired services and how they secure the financial resources to pay for these services.

In many industrialized countries, spending and taxation by the government form a large portion of the nation's total economic activity. For example, total government spending in the United States equals about 40 percent of the nation's gross domestic product—that is, the value of all the goods and services produced within the United States in one year (see Gross National Product).

II

Why Public Finance Is Needed

Governments provide public goods—government-financed items and services such as roads, military forces, lighthouses, and street lights. Private citizens would not voluntarily pay for these services, and therefore businesses have no incentive to produce them.

Public finance also enables governments to correct or offset undesirable side effects of a market economy. These side effects are called spillovers or externalities. For example, households and industries may generate pollution and release it into the environment without considering the adverse effect pollution has on others. If it costs less to pollute than not to, people and businesses have a financial incentive to continue polluting. Pollution is a spillover because it affects people who are not responsible for it. To correct a spillover, governments can encourage or restrict certain activities. For example, governments can sponsor recycling programs to encourage less pollution, pass laws that restrict pollution, or impose charges or taxes on activities that cause pollution.

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Public finance provides government programs that moderate the incomes of the wealthy and the poor. These programs include social security, welfare, and other social programs. For example, some elderly people or people with disabilities require financial assistance because they cannot work. Governments redistribute income by collecting taxes from their wealthier citizens to provide resources for their needy ones. The taxes fund programs that help support people with low incomes.

III

Public Spending

Each year national, state, and local governments create a budget to determine how much money they will spend during the upcoming year. The budget determines which public goods to produce, which spillovers to correct, and how much assistance to provide to financially disadvantaged people. The chief administrator of the government—such as the president, prime minister, governor, or mayor—proposes the budget. However, the legislature—such as the congress, parliament, state legislature, or city council—ultimately must pass the budget. The legislature often changes the size and composition of the budget, but it must not make changes that the chief administrator will reject and veto.

Government spending takes two forms: exhaustive spending and transfer spending. Exhaustive spending refers to purchases made by a government for the production of public goods. For example, to construct a new harbor the government buys and uses resources from the economy, such as labor and raw materials. In transfer spending the government transfers income to people to help them support themselves. Transfers can be one of two kinds: cash or in-kind. Cash transfers are cash payments, such as social security checks and welfare payments. In-kind transfers involve no cash payments but instead transfer goods or services to recipients. Examples of in-kind transfers include food stamp coupons and Medicare. Recipients of food stamp coupons exchange the coupons for groceries.

As recently as the 1960s most spending by the U.S. government was exhaustive spending for items such as national defense, roads, airports, schools, and parks. In the mid-1960s transfer spending began to grow rapidly. In the United States today, over 50 percent of federal government spending is for cash and in-kind transfers. About 20 percent of state and local government spending is transfer spending.

IV

Public Revenue

Governments must have funds, or revenue, to pay for their activities. Governments generate some revenue by charging fees for the services they provide, such as entrance fees at national parks or tolls for using a highway. However, most government revenue comes from taxes, such as income taxes, capital taxes, and sales and excise taxes.

An important source of tax revenue in most industrialized countries is the income or payroll tax, also known as the personal income tax. Income taxes are imposed on labor or activities that generate income, such as wages or salaries. In the United States, income taxes account for about half of the total revenue of local, state, and federal governments combined. The federal government, many state governments, and some local governments levy personal income taxes.

Another important source of government revenue is the capital tax. Capital includes items or facilities that generate profits, such as factories, business machinery, and real estate. Some types of capital taxes are known as “profits” taxes. One kind of capital tax used by the federal government in the United States is the corporate income tax. A property tax is a capital tax used by state and local governments. Property taxes are levied on items such as houses or boats.

Sales and excise taxes are also a major source of government tax revenue. Many state and local governments levy a sales tax on the purchase of certain items. Consumers usually pay a percentage of the sales price as the tax. Excise taxes are used by all levels of government. An excise tax is levied on a specific product, such as alcohol, cigarettes, or gasoline. The tax is usually included in the purchase price.

In Canada and many European, South American, and Asian countries, a value-added tax (VAT) provides significant revenue. The VAT is levied on the value added to a product during production as its components are assembled into final goods. For example, a clothing manufacturer might spend $500 on fabric, thread, zippers, and other goods required to make dresses. The manufacturer then adds $1,000 to cover the costs of labor and the use of machines and equipment and sells the dresses for a total of $1,500. The value-added tax is paid on this $1,000.