Learning About Growth from Austerity

All countries face complex choices with respect to the timing of austerity, perceived sovereign credit risk, and growth-oriented reforms. Today, advanced countries' previous emphasis on austerity may be giving way to a more balanced approach to boosting economic growth and employment.

MILAN – In a recent set of studies, Carmen Reinhart and Kenneth Rogoff used a vast array of historical data to show that the accumulation of high levels of public (and private) debt relative to GDP has an extended negative effect on growth. The size of the effect incited debate about errors in their calculations. Few, however, doubt the validity of the pattern.

This should not be surprising. Accumulating excessive debt usually entails moving some part of domestic aggregate demand forward in time, so the exit from that debt must include more savings and diminished demand. The negative shock adversely impacts the non-tradable sector, which is large (roughly two-thirds of an advanced economy) and wholly dependent on domestic demand. As a result, growth and employment rates fall during the deleveraging period.

In an open economy, deleveraging does not necessarily impair the tradable sector so thoroughly. But, even in such an economy, years of debt-fueled domestic demand may produce a loss of competitiveness and structural distortions. And the crises that often divide the leveraging and deleveraging phases cause additional balance-sheet damage and prolong the healing process.

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