This paper analyzes the impact of the exchange rate volatility on the performance of the Peruvian economy using financial information from 163 non-financial listed firms. We find evidence that, for firms holding dollar-denominated debt, investment decisions are negatively affected by real exchange rate depreciation. The reasons behind this result are: (i) the high degree of liability dollarization and currency mismatch that create the conditions for a balance sheet effect and a financial stress in the aftermath of a currency depreciation; (ii) the strong bank-lending channel that follows and reinforces the balance sheet effect; (iii) the domestic demand shrinkage that affects severely firms' sales; and (iv) the relatively small and poorly diversified export sector. © 2003 Elsevier B.V. All rights reserved.