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No society should expect or desire complete equality of income at a given point in time, for a number of reasons. First, most workers receive relatively low earnings in their first few jobs, higher earnings as they reach middle age, and then lower earnings after retirement. Thus, a society with people of varying ages will have a certain amount of income inequality. Second, people’s preferences and desires differ. Some are willing to work long hours to have income for large houses, fast cars and computers, luxury vacations, and the ability to support children and grandchildren.
These factors all imply that a snapshot of inequality in a given year does not provide an accurate picture of how people’s incomes rise and fall over time. Even if some degree of economic inequality is expected at any point in time, how much inequality should there be? There is also the difference between income and wealth, as the following Clear It Up feature explains.
Income is a flow of money received, often measured on a monthly or an annual basis; wealth is the sum of the value of all assets, including money in bank accounts, financial investments, a pension fund, and the value of a home. In calculating wealth all debts must be subtracted, such as debt owed on a home mortgage and on credit cards. A retired person, for example, may have relatively little income in a given year, other than a pension or Social Security. However, if that person has saved and invested over time, the person’s accumulated wealth can be quite substantial.
In the United States, the wealth distribution is more unequal than the income distribution, because differences in income can accumulate over time to make even larger differences in wealth. However, the degree of inequality in the wealth distribution can be measured with the same tools we use to measure the inequality in the income distribution, like quintile measurements. Data on wealth are collected once every three years in the Survey of Consumer Finance.
Even if they cannot answer the question of how much inequality is too much, economists can still play an important role in spelling out policy options and tradeoffs. If a society decides to reduce the level of economic inequality, it has three main sets of tools: redistribution from those with high incomes to those with low incomes; trying to assure that a ladder of opportunity is widely available; and a tax on inheritance.
Redistribution means taking income from those with higher incomes and providing income to those with lower incomes. Earlier in this chapter, we considered some of the key government policies that provide support for the poor: the welfare program TANF, the earned income tax credit, SNAP, and Medicaid. If a reduction in inequality is desired, these programs could receive additional funding.
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