Public finance

Public finance

Public finance is the study of the role of the government in the economy.

The proper role of government provides a starting point for the analysis of public finance. In theory, under certain circumstances, private markets will allocate goods and services among individuals efficiently (in the sense that no waste occurs and that individual tastes are matching with the economy's productive abilities). If private markets were able to provide efficient outcomes and if the distribution of income were socially acceptable, then there would be little or no scope for government. In many cases, however, conditions for private market efficiency are violated. For example, if many people can enjoy the same good at the same time, then private markets may supply too little of that good. National defense is one example of non-rival consumption, or of a public good.

"Market failure" occurs when private markets do not allocate goods or services efficiently. The existence of market failure provides an efficiency-based rationale for collective or governmental provision of goods and services. Externalities, public goods, informational advantages, strong economies of scale, and network effects can cause market failures.

Public finance is closely connected to issues of income distribution and social equity. Governments can reallocate income through transfer payments or by designing tax systems that treat high-income and low-income households differently.

Government expenditures

Economists classify government expenditures into three main types. Government purchases of goods and services for current use are classed as government consumption. Government purchases of goods and services intended to create future benefits--- such as infrastructure investment or research spending--- are classed as government investment. Government expenditures that are not purchases of goods and services, and instead just represent transfers of money--- such as social security payments--- are called transfer payments.

Income distribution

Some forms of government expenditure are specifically intended to transfer income from some groups to others. For example, governments sometimes transfer income to people that have suffered a loss due to natural disaster. Likewise, public pension programs transfer wealth from the young to the old. Other forms of government expenditure which represent purchases of goods and services also have the effect of changing the income distribution. For example, engaging in a war may transfer wealth to certain sectors of society. Public education transfers wealth to families with children in these schools. Public road construction transfers wealth from people that do not use the roads to those people that do (and to those that build the roads).

Government expenditures are financed in some ways:

Government revenue

Taxes

Non-tax revenue (revenue from government-owned corporations, sovereign wealth funds, sales of assets)

Government borrowing

Printing of Money or Inflation

Privatization

Taxes

Taxation is the central part of modern public finance. Its significance arises not only from the fact that it is by far the most important of all revenues but also because of the gravity of the problems created by the present day heavy tax burden. The main objective of taxation is raising revenue. A high level of taxation is necessary in a welfare State to fulfill its obligations. Taxation is used as an instrument of attaining certain social objectives i.e. as a means of redistribution of wealth and thereby reducing inequalities. Taxation in a modern Government is thus needed not merely to raise the revenue required to meet its ever-growing expenditure on administration and social services but also to reduce the inequalities of income and wealth. Taxation is also needed to draw away money that would otherwise go into consumption and cause inflation to rise.

Debt

Governments, like any other legal entity, can take out loans, issue bonds and make financial investments. Government debt (also known as public debt or national debt) is money (or credit) owed by any level of government; either central or federal government, municipal government or local government. As the government represents the people, government debt can be seen as an indirect debt of the taxpayers. Government debt can be categorized as internal debt, owed to lenders within the country, and external debt, owed to foreign lenders. Governments usually borrow by issuing securities such as government bonds and bills. Less creditworthy countries sometimes borrow directly from commercial banks or international institutions such as the International Monetary Fund or the World Bank.