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Wed, March 29, 2023 | 10:31
Today`s Column
Why are savings patterns so different?
Posted : 2012-09-21 17:22
Updated :  
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By Keyu Jin

BEIJING ― Ever since the integration of emerging markets into the global economy began in the early 1990s, three striking trends have emerged: a divergence in private savings rates between the industrialized core and the emerging periphery (the former experiencing a sharp rise, and the latter a steady decline); large global imbalances between the two regions; and a drop in interest rates worldwide. But, while global imbalances have preoccupied many observers, few have sought to explain the divergence in world savings behavior.

In 1988, the household savings rate in China and the United States was roughly equal, at about 5 percent. Yet, by 2007, China’s household savings rate had risen to a staggering 30 percent, compared to just 2.5 percent in the U.S. The pattern is not uncharacteristic of other industrialized countries relative to emerging markets over the last two decades.

Savings behavior invariably reacts to changes in interest rates, which have fallen steadily over the last two decades to today’s record-low levels. But how can savings patterns be so different ― often opposite ― in globalized economies that are well integrated into world capital markets?

The answer may be that credit markets are more developed in advanced economies than they are in emerging countries, particularly in terms of the degree to which households are able to borrow. Of course, one might argue that Asian thrift and American profligacy merely reflect asymmetric demands for credit: Asians are intrinsically more reluctant to borrow. In that case, however, the vast differences in household debt ― ranging from 25 percent of GDP in emerging Asia (Southeast Asia, China, India, Hong Kong and South Korea) to more than 90 percent in the US and other Anglo-Saxon economies (including Australia, Canada, Ireland, New Zealand and the United Kingdom) ― would reflect only a dissimilarity in taste.

A more plausible explanation is that institutional differences in the ability to borrow dictate to some extent the disparity in savings rates across countries. The argument is simple: All economies have both borrowers and savers, and changes in the cost of borrowing (or the return to saving) affect them differently. When interest rates decline, borrowers are able to borrow more. Savers, on the other hand, may be compelled to save more in the face of shrinking interest income.

At the macro level, a less credit-constrained economy (with a large mass of effective borrowers) could then experience a fall in the savings rate as borrowing rose. However, in a country with a large mass of effective savers, the savings rate can rise, rather than fall. This asymmetry in savings patterns might thus reflect the simple fact that credit-constrained economies are less sensitive to drops in the cost of borrowing relative to less constrained economies.

In joint research with Nicolas Coeurdacier and Stephane Guibaud, we show that economic data supports this view. Borrowers and savers are naturally grouped by age. The young normally face low, current wage income, but faster growth in future income, and would ideally borrow against future income to augment consumption today and to invest in education. The middle-aged, preparing for retirement, are likely to be the economy’s savers. If asymmetric credit constraints are indeed important, young borrowers and middle-aged savers will display distinct patterns in constrained versus less-constrained economies.

In fact, there was a remarkable contrast in savings behavior across age groups in China and the U.S. in the period 1992-2009. For young Americans (those under 25), the borrowing rate rose by 10 percentage points more than the borrowing rate of young Chinese, while the savings rate of the Chinese working-age population (ages 35-54) rose by about 17 percentage points more than the savings rate of their American counterparts.

Another implication of this view is that the steep rise in savings in China is largely driven by a rise in the savings rate of middle-aged Chinese (rather than a fall in the borrowing rate of the young). Conversely, the fall in savings in the U.S. is largely due to higher borrowing by the young (rather than a fall in middle-aged Americans’ savings rate).

Indeed, of the 20.2-percentage-point increase in aggregate household savings (as a share of GDP) in China from 1992 to 2009, the middle-aged cohort accounted for more than 60 percent (the remainder was largely attributable to the elderly). In the U.S., which experienced a 1.8-percentage-point decline in aggregate savings as a share of GDP, the savings-to-GDP ratio among the young declined by 1.25 percentage points, whereas the figure for middle-aged savers actually increased by about 1.5 percentage points.

Apart from accounting for the global divergence in savings rates, tight credit constraints in China might explain the country’s high, and rising, savings rate ― especially as the large rise in national savings is attributable mostly to household savings. This would mean that China’s much-publicized effort to boost domestic consumption might in fact call for appropriate credit-market reforms.

U.S. Federal Reserve Board Chairman Ben Bernanke’s notion of a “global savings glut” is a commonly cited explanation for falling world interest rates. Credit constraints in fast-growing developing economies may be the reason why the glut emerged in the first place.

Keyu Jin is lecturer in economics at the London School of Economics. For more stories, visit Project Syndicate (www.project-syndicate.org).
 
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