Yin-Wong Cheung

Frank Westermann

Issues in debates about foreign currency exposure—the denomination of liabilities or assets in foreign currency. The foreign currency denomination of contracts in international transactions can lead to international currency exposure at the country level with important economic and policy implications. When debts are denominated in foreign currency and revenues in domestic currency, exchange rate fluctuations can result in balance sheet effects for countries with either net asset or liability positions. Moreover, currency mismatch between assets and liabilities can be a cause for crises in developing and emerging economies. This book looks at the issues surrounding foreign currency exposure in today's increasingly integrated world economy. The contributors draw on cross-country as well as country-specific data. They consider international currency risk after the Swiss franc ended its one-sided peg with the euro, for example, and the foreign exchange positions of firms in Turkey and Russia. Other contributors take macroeconomic perspectives, examining the potential effects of exchange rate realignment, the pressure to appreciate on countries with current account surpluses, and the currency exposure in international trade. Finally, contributors consider the issue from finance and political economy perspectives, addressing the phenomenon of the forward premium puzzle and discussing geopolitical aspects ascending currencies. Contributors Fatih Altunok, Huseyin Aytug, Agustín S. Bénétrix, Jörg Breitung, Paul De Grauwe, Eiji Fujii, Peter Garber, Juann H. Hung, Signe Krogstrup, Philip R. Lane, Katja Mann, Arif Oduncu, Gunther Schnabl, Maria V. Sokolova, Cédric Tille

International Currency Exposure

Aaron Tornell

Aaron Tornell Frymerman

Analysis and evidence of how the factors that give rise to boom-bust cycles in fast-growing developing economies also enhance long-run growth. The volatility that has hit many middle-income countries (MICs) after liberalizing their financial markets has prompted critics to call for new policies to stabilize these boom-bust cycles. But, as Aaron Tornell and Frank Westermann point out in this book, over the last two decades most of the developing countries that have experienced lending booms and busts have also exhibited the fastest growth among MICs. Countries with more stable credit growth, by contrast, have exhibited, on average, lower growth rates. Factors that contribute to financial fragility thus appear, paradoxically, to be a source of long-run growth as well. Tornell and Westermann analyze boom-bust cycles in the developing world and discuss how these cycles are generated by credit market imperfections. They explain why the financial liberalization that allows countries to overcome imperfections impeding rapid growth also generates the financial fragility that leads to greater volatility and occasional crises. The conceptual framework they present illustrates this linkage and allows Tornell and Westermann to address normative questions regarding liberalization policies.The authors also characterize key macroeconomic regularities observed across MICs, showing that credit markets play a key role not only in boom-bust episodes but in the strong "credit channel" observed during tranquil times. A theoretical framework is then presented that explains how credit market imperfections can account for these empirical patterns. Finally, Tornell and Westermann provide microeconomic evidence on the credit market imperfections that drive the results of the theoretical framework, finding that asymmetries between tradables and nontradables are key to understanding the patterns in MIC data.

Frank Westermann

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