High Income Disparity Leads to Low Savings Rates « naked capitalism

Citigroup Plutonomy reports in 2005 and 2006 by Ajay Kapur, Niall Macleod, and Narendra Singh as reported by Yves Smith:

In a plutonomy, the rich drop their savings rate, consume a larger fraction of their bloated, very large share of the economy. This behavior overshadows the decisions of everybody else. The behavior of the exceptionally rich drives the national numbers – the “appallingly low” overall savings rates, the “over-extended consumer”, and the “unsustainable” current accounts that
accompany this phenomenon….

Feeling wealthier, the rich decide to consume a part of their capital gains right away. In other words, they save less from their income, the wellknown
wealth effect. The key point though is that this new lower savings rate is applied
to their newer massive income. Remember they got a much bigger chunk of the
economy, that’s how it became a plutonomy. The consequent decline in absolute savings for them (and the country) is huge when this happens. They just account for too large a part of the national economy; even a small fall in their savings rate overwhelms the decisions of all the rest.

Yves here. This account rather cheerily dismisses the notion that there might be overextended consumers on the other end of the food chain. Unprecedented credit card delinquencies and mortgage defaults suggest otherwise. But behaviors on both ends of the income spectrum no doubt played into the low-savings dynamic: wealthy who spend heavily, and struggling average consumers who increasingly came to rely on borrowings to improve or merely maintain their lifestyle. And let us not forget: were encouraged to monetize their home equity, so they actually aped the behavior of their betters, treating appreciated assets as savings. Before you chide people who did that as profligate (naive might be a better characterization), recall that no one less than Ben Bernanke was untroubled by rising consumer debt levels because they also showed rising asset levels. Bernanke ignored the fact that debt needs to be serviced out of incomes, and households for the most part were not borrowing to acquire income-producing assets. So unless the rising tide of consumer debt was matched by rising incomes, this process was bound to come to an ugly end.

The US shows a negative relationship between income concentration and savings (data points 1929-2002, with 1940-1944 excluded, which is defensible, given widespread wartime rationing):

Canada shows the same downward sloping relationship, as does the UK (although the authors have to massage the data a bit more, with one downward sloping line for the period before 1990, with a shift for the 1990s period).