Demographics

On the Distribution of Wealth

In an effort to understand the dynamics of the distribution of consumption, income and wealth, over the past decade, there has been an explosion of research. While important debates about measurement and data interpretation continue, a range of evidence points to two important conclusions. First, over the past two centuries, the global income distribution has become far more equal. But, while the gap between countries is now much smaller, in recent decades, inequality within some advanced countries, especially in the United States, has risen.

Rather than income or consumption, in this post we focus on the distribution of wealth. Wealth affects welfare in at least two key ways. First, in the presence of borrowing constraints, it provides a buffer against fluctuations of income, allowing households to smooth consumption in the face of temporary bouts of illness or unemployment. Second, it provides the basis for household spending in retirement. .

As we will see, the distribution of wealth is far less equal than that of income. Moreover, recent research shows that, following the Great Financial Crisis of 2007-2009, the U.S. wealth distribution has become decidedly more unequal. As a result, a large portion of U.S. households appears to have little scope for meeting retirement needs out of their current net worth, making federal insurance programs key to their future well-being.

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