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The Effect of Income Taxes on Economic Growth

Income Taxes - Government Spending on Infrastructure

By , About.com Guide

We saw in the previous section that higher taxes can lead to higher economic growth if those taxes are efficiently spent on three areas which protect the rights of citizens. A military and a police force ensure that people do not have to spend a great deal of time and money on personal security, allowing them to engage in more productive activities. A court system allows individuals and organizations to enter into contracts with one another which creates opportunities for growth through collaboration motivated by rational self interest.

There are other government programs, which bring a net benefit to the economy when fully paid for by taxes. There are certain goods that society finds desirable but individuals or corporations cannot supply. Consider the problem of roads and highways. Having an extensive system of roads on which people and goods can freely travel greatly adds to the prosperity of a nation. If a private citizen wanted to build a road for profit, they would run into two major difficulties:

  1. The cost of collection. If the road was a useful one, people would gladly pay for its benefits. In order to collect fees for the use of the road, a toll would have to be set up at every exit and entry to the road; many interstate highways work this way. However, for most local roads the amount of money obtained through these tolls would be dwarfed by the extreme costs of setting up these tolls. Because of the collection problem, a lot of useful infrastructure would not be built, although there is a net benefit to its existence.

  2. Monitoring who uses the road Suppose you were able to set up a system of tolls at all the entrances and exits. It may still be possible for people to enter or leave the road at points other than the official exit and entrance. If people can evade paying the toll, many will.
Governments provide a solution to this problem by constructing the roads and recouping the expenses through taxes such as the income tax and the gasoline tax. Other pieces of infrastructure such as the sewage and water system work on the same principle. The idea of government activity in these areas is not new; it goes at least as far back as Adam Smith. In his 1776 masterpiece, The Wealth of Nations Smith wrote:

"The third and last duty of the sovereign or commonwealth is that of erecting and maintaining those public institutions and those public works, which, though they may be in the highest degree advantageous to a great society, are, however, of such a nature that the profit could never repay the expense to any individual or small number of individuals, and which it therefore cannot be expected that any individual or small number of individuals should erect or maintain."

Higher taxes which lead to improvements in infrastructure can lead to higher economic growth. Once again, it depends on the usefulness on the infrastructure being created. A six-lane highway between two small towns in upstate New York is not likely to be worth the tax dollars spent on it. An improvement to the safety in the water supply in an impoverished area might be worth its weight in gold if it leads to reduced illness and suffering for the users of the system.

Next we'll consider the situation where higher taxes are used to finance social programs.

Be sure to continue to page 4

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