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Abstract: This paper develops a model of the firm's choice between debt denominated in local currency and that denominated in foreign currency in a small open economy characterized by exchange rate risk and hedging possibilities. The model shows that the currency composition of debt and the level of hedging are endogenously determined as optimal firms' responses to a tradeoff between the lower cost of borrowing in foreign debt and the higher risk of such borrowing due to exchange rate uncertainty. Both the composition of debt and the level of hedging depend on common factors such as foreign exchange rate risk and the probability of financial default, interest rates, the size of firms' net worth, and the costs of managing exchange rate risk. Results of the model are broadly consistent with the lending and hedging behavior of the corporate sector in small open economies that recently experienced currency crises. In particular, unlike the predictions of previous work in the literature on currency crises, the model can explain why the collapse of the fixed exchange rate regime in Brazil, in early 1999, caused no major change in the currency composition of debt of the corporate sector.

Keywords: Exchange rate regime, debt composition, hedging

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