Optimal Monetary Policy In A Small Open Economy Under Segmented Asset Markets And Sticky Prices

This paper studies optimal monetary policy in a two-sector small open economy model under segmented asset markets and sticky prices. We solve the Ramsey problem under full commitment, and characterize the optimal monetary policy in a calibrated version of the model. The findings of the paper are threefold. First, the Ramsey solution mimics the allocations under flexible prices. Second, under the optimal policy the volatility of non-tradable inflation is close to zero. Third, stabilizing nontradable inflation is optimal regardless of the financial structure of the small open economy. Even for a moderate degree of price stickiness, implementing a monetary policy that mitigates asset market segmentation is highly distortionary. This last result suggests that policymakers should resort to other policy instruments in order to correct financial imperfections.

Introducing habit formation into an open economy macroeconomic model with price stickiness, we examine the characteristics of an optimal monetary policy. We find that, first, the optimal policy rule entails interest rate smoothing and responds to the lagged values of the foreign interest rate and domestic technology shocks as well as their current values. Second, habit formation enriches the dynamics of the economy with a persistent, hump-shaped response of consumption to shocks. Finally, when habit formation does matter, the optimal policy rule achieves a greater welfare improvement over alternative policy rules by achieving lower macroeconomic variability.

Most trade is invoiced in very few currencies. Despite this, the Mundell-Fleming benchmark and its variants focus on pricing in the producer’s currency or in local currency. We model instead a ‘dominant currency paradigm’ for small open economies characterized by three features: pricing in a dominant currency; pricing complementarities, and imported input use in production. Under this paradigm: (a) the terms-of-trade is stable; (b) dominant currency exchange rate pass-through into export and import prices is high regardless of destination or origin of goods; (c) exchange rate pass-through of non-dominant currencies is small; (d) expenditure switching occurs mostly via imports, driven by the dollar exchange rate while exports respond weakly, if at all; (e) strengthening of the dominant currency relative to non-dominant ones can negatively impact global trade; (f) optimal monetary policy targets deviations from the law of one price arising from dominant currency fluctuations, in addition to the inflation and output gap. Using data from Colombia we document strong support for the dominant currency paradigm.

The European experience suggests that the efforts made to achieve an efficient trade-off between monetary policy and prudential supervision ultimately failed. The severity of the global crisis have pushed central banks to explore innovative tools—within or beyond their statutory constraints—capable of restoring the smooth functioning of the financial cycle, including setting macroprudential policy instruments in the regulatory toolkit. But macroprudential and monetary policies, by sharing multiple transmission channels, may interact—and conflict—with each other. Such conflicts may represent not only an economic challenge in the pursuit of price and financial stability, but also a legal uncertainty characterizing the regulatory developments of the EU macroprudential and monetary frameworks. In analyzing the “legal interaction” between the two frameworks in the EU, this book seeks to provide evidence of the inconsistencies associated with the structural separation of macroprudential and monetary frameworks, shedding light upon the legal instruments that could reconcile any potential policy inconsistency.

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A comprehensive and rigorous text that shows how a basic open economy model can be extended to answer important macroeconomic questions that arise in emerging markets. This rigorous and comprehensive textbook develops a basic small open economy model and shows how it can be extended to answer many important macroeconomic questions that arise in emerging markets and developing economies, particularly those regarding monetary, fiscal, and exchange rate issues. Eschewing the complex calibrated models on which the field of international finance increasingly relies, the book teaches the reader how to think in terms of simple models and grasp the fundamentals of open economy macroeconomics. After analyzing the standard intertemporal small open economy model, the book introduces frictions such as imperfect capital markets, intertemporal distortions, and nontradable goods, into the basic model in order to shed light on the economy's response to different shocks. The book then introduces money into the model to analyze the real effects of monetary and exchange rate policy. It then applies these theoretical tools to a variety of important macroeconomic issues relevant to developing countries (and, in a world of continuing financial crisis, to industrial countries as well), including the use of a nominal interest rate as a main policy instrument, the relative merits of flexible and predetermined exchange rate regimes, and the targeting of “real anchors.” Finally, the book analyzes in detail specific topics such as inflation stabilization, “dollarization,” balance of payments crises, and, inspired by recent events, financial crises. Each chapter includes boxes with relevant empirical evidence and ends with exercises. The book is suitable for use in graduate courses in development economics, international finance, and macroeconomics.

The integration of market economies is one of the most remarkable features of international economics, which has important implications for macroeconomic performance in open economies. Equally important is the declining relevance of the real versus the monetary theory dichotomy. These papers focus on those aspects of monetary policy which relate to credibility and non-neutrality; the domestic adjustment to foreign shocks; the interdependence of open economies and their strategic interactions. An important section is also devoted to the innovative modelling of exchange rate dynamics.