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U.S. income inequality could be pushing interest rates lower, research finds

EconomyAug 27, 2021 03:41PM ET
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© Reuters. A man walks in the financial district, during the outbreak of the coronavirus disease (COVID-19) in New York City, New York, U.S. April 23, 2020. REUTERS/Eduardo Munoz

By Jonnelle Marte

(Reuters) - Economists have long attributed the decline in U.S. interest rates primarily to the country's aging population, with other factors such as slower growth also playing a role.

But a steady rise in income inequality may be the bigger force driving rates down, according to a new paper released on Friday during the annual Jackson Hole research conference held virtually by the Kansas City Federal Reserve.

The research focuses on the neutral rate, or the longer-term interest rate at which the Fed is neither stimulating the economy nor slowing it down. That rate, known as "R-star," tends to go down when savings are rising.

The general theory economists usually cite says that as baby boomers aged, a large portion of the population entered the highest earning years of their career - during which they would typically save more. But rising income inequality may be doing more to increase savings, according to researchers Atif Mian of Princeton University, Ludwig Straub of Harvard University and Amir Sufi from the University of Chicago Booth School of Business.

The bottom line is that higher-income households tend to save more than lower-income households, the researchers note. And the share of income going to the top 10% of households has risen steadily since the 1980s, "corresponding almost exactly to the downward pattern" in the neutral rate, the paper says.

For example, when people born between 1925 and 1934 reached the ages of 45 to 54, the top 10% of the group received 33% of the total income earned by that cohort. When people born between 1965 and 1974 reached that age group, which are considered the highest earning years, the top 10% earned 47% of the total income.

The patterns caused by demographic shifts are not as strongly correlated with the decline in the neutral rate, the researchers say.

For instance, the share of income going to people between the ages of 45 and 64 rose from the 1990s through 2010 as more baby boomers entered that age group. But it started to fall in 2010 as those boomers began to retire. Meanwhile, the neutral rate declined during most of that time, the researchers said.

Fed officials are struggling to figure out the best ways to adapt monetary policy to a low interest rate world. There is little indication that inequality is going to lessen in the near future, the researchers wrote. If they are correct, rates could be low for a while.

U.S. income inequality could be pushing interest rates lower, research finds
 

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Mox Mox
Mox Mox Aug 27, 2021 5:27PM ET
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what a joke research and article
 
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