Precaution Versus Mercantilism: Reserve Accumulation, Capital Controls, and the Real Exchange Rate

60 Pages Posted: 25 Apr 2017 Last revised: 27 Apr 2023

See all articles by Woo Jin Choi

Woo Jin Choi

University of Virginia - Department of Economics; Korea Development Institute

Alan M. Taylor

University of California, Davis - Department of Economics; National Bureau of Economic Research (NBER); Centre for Economic Policy Research (CEPR)

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Date Written: April 2017

Abstract

We document a new international stylized fact describing the relationship between real exchange rates and external asset holdings. Economists have long argued that the real exchange rate is associated with the net international investment position, appreciating as external wealth increases. This mechanism has been seen as central for international payments equilibrium and relative price adjustments. However, we argue that the effect of external assets held by the public sector—reserve accumulation—on real exchange rates may be quite different from that of privately held external assets, and that capital controls are a critical factor behind this difference. For 1975–2007, controlling for GDP per capita and the terms of trade, we find that a one percentage point increase in external assets relative to GDP (net of reserves) is related to an 0.24 percent real exchange rate appreciation. On the contrary, a one percentage point increase in reserve accumulation relative to GDP has virtually no effect on the real exchange rate in financially open countries (low capital controls), and is related to a 1.65 percent real exchange rate depreciation in financially closed countries (high capital controls). Results are stronger in developing countries and in more recent periods. Gross rather than net positions matter and we present a new theoretical model to account for the stylized fact. The framework encompasses so-called precautionary and mercantilist motives for reserve accumulation, and also explains how the optimal capital account policy—the mix of reserve accumulation and capital controls—is determined. Further empirical support arises from evidence that reserve accumulation is associated with a trade surplus, along with higher GDP and TFP growth in countries with high capital controls, findings that are consistent with the mechanisms of our model.

Suggested Citation

Choi, Woo Jin and Choi, Woo Jin and Taylor, Alan M., Precaution Versus Mercantilism: Reserve Accumulation, Capital Controls, and the Real Exchange Rate (April 2017). NBER Working Paper No. w23341, Available at SSRN: https://ssrn.com/abstract=2957337

Woo Jin Choi (Contact Author)

University of Virginia - Department of Economics ( email )

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Alan M. Taylor

University of California, Davis - Department of Economics ( email )

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Centre for Economic Policy Research (CEPR)

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