New Open Economy Macroeconomics

The New Open Economy Macroeconomics refers to a vast body of literature embracing a new theoretical framework for policy analysis in open economy, with the goal of overcoming the limitations of the Mundell-Fleming model, while preserving the empirical wisdom and policy friendliness of traditional analysis. Starting in the early 1990s, NOEM contributions have developed general equilibrium models with imperfect competition and nominal rigidities, to reconsider conventional views on the transmission of monetary and exchange rate shocks; they have contributed to the design of optimal stabilization policies, identifying international dimensions of optimal monetary policy; they have raised issues in the desirability of international policy coordination.Open economy models; exchange rates; stabilization policy; Mundell-Fleming

Openness and the case for flexible exchange rates

Models of stabilization in open economy traditionally emphasize the role of exchange rates as a substitute for nominal price flexibility in fostering relative price adjustment. This view has been recently criticized on the ground that, to the extent that prices are sticky in local currency, the exchange rate does not play the stabilizing role envisioned by the received wisdom. An important question is whether, for this very reason, stabilization policies should limit exchange rate movements, or even eliminate them altogether. In this paper, I re-assess this issue by extending the Corsetti and Pesenti (2001) model to allow for home bias in consumption, so that I can exploit the advantages of closed-form solutions. While this extension leaves most properties of the model unaffected, home bias implies that the real exchange rate in an efficient equilibrium is not constant, but fluctuates with the terms of trade. The weight that monetary authorities optimally place on stabilizing domestic marginal costs is increasing in Home bias. With asymmetric shocks, fixed exchange rates are incompatible with efficient monetary rules. Yet, the adverse welfare consequences of exchange rate movements constrain the optimal intensity of monetary responses to domestic shocks. Openness matters: the larger the import content of consumption, the lower the exchange rate volatility implied by optimal stabilization rules.optimal monetary policy, nominal rigidities, exchange rate pass-through, exchange rate regimes, international cooperation

Nominal Debt and the Dynamics of Currency Crises

We study the interaction of fiscal and monetary policies during a currency crisis in an economy with government nominal liabilities. We show that the stock and maturity of these liabilities are key determinants of the magnitude, timing and predictability of a devaluation. Among notable features of our model, monetary authorities defend the currency parity conditional on the level of the interest rate, rather than on the stock of international reserves; budget deficits need not be high before a currency crisis; post- devaluation inflation may exhibit little persistence, and money demand need not fall after the crisis.

The simple geometry of transmission and stabilization in closed and open economies

This paper provides an introduction to the recent literature on macroeconomic stabilization in closed and open economies. We present a stylized theoretical framework, and illustrate its main properties with the help of an intuitive graphical apparatus. Among the issues we discuss: optimal monetary policy and the welfare gains from macroeconomic stabilization; international transmission of real and monetary shocks and the role of exchange rate pass-through; the design of optimal exchange rate regimes and monetary coordination among interdependent economies.Classification-JEL: E31, E52, F42optimal monetary policy, nominal rigidities, exchange rate pass-through, international cooperation

International Dimensions of Optimal Monetary Policy

This paper provides a baseline general-equilibrium model of optimal monetary policy among interdependent economies, with monopolistic firms that set prices one period in advance. Strict adherence to inward-looking policy objectives such as the stabilization of domestic output cannot be optimal when firms' markups are exposed to currency fluctuations. Such policies induce excessive volatility in exchange rates and foreign sales revenue, leading exporters to set higher prices in response to higher profit risk. In general, optimal rules trade off a larger domestic output gap against lower import prices. Monetary rules in a world Nash equilibrium lead to smaller exchange rate volatility relative to both inward-looking rules and discretionary policies, even when the latter do not suffer from any inflationary (or deflationary) bias. Gains from international monetary cooperation are related in a non-monotonic way to the degree of exchange rate pass-through.

Stability, Asymmetry, and Discontinuity: The Launch of European Monetary Union

macroeconomics, EMU, European Monetary Union

Macroeconomics of international price discrimination

This paper builds a baseline two-country model of real and monetary transmission in the presence of optimal international price discrimination by firms. Distributing traded goods to consumers requires nontradables, intensive in local labor. Because of distributive trade the price elasticity of demand depends on country-specific shocks to productivity and the exchange rate. Hence, within limits dictated by the possibility of arbitrage, profit-maximizing monopolistic firms drive a wedge between prices across countries at both wholesale and retail level. Optimal pricing thus results in possibly large deviations from the law of one price and incomplete pass-through on import prices. Consistent with the received wisdom on international transmission, nominal and real depreciations worsens the terms of trade. In general, the nominal and real exchange rate are more volatile than fundamentals, and large movements in the international prices translate into small changes in consumption, employment and the price level. Finally, we provide an example showing that international policy cooperation may be redundant even when asset trading is ruled out, despite incomplete pass-through and less than optimal risk sharing.exchange rate pass-through, wholesale and retail prices, nominal rigidities, international cooperation

The Simple Geometry of Transmission and Stabilization in Closed and Open Economies

This paper provides an introduction to the recent literature on macroeconomic stabilization in closed and open economies. We present a stylized theoretical framework, and illustrate its main properties with the help of an intuitive graphical apparatus. Among the issues we discuss: optimal monetary policy and the welfare gains from macroeconomic stabilization; international transmission of real and monetary shocks and the role of exchange rate pass-through; the design of optimal exchange rate regimes and monetary coordination among interdependent economies.

Towards a theory of firm entry and stabilization policy

This paper studies the role of stabilization policy in a model where firm entry responds to shocks and uncertainty. We evaluate stabilization policy in the context of a simple analytically solvable sticky price model, where firms have to prepay a fixed cost of entry. The presence of endogenous entry can alter the dynamic response to shocks, leading to greater persistence in the effects of monetary and real shocks. Entry affects welfare, depending on the love of variety in consumption and investment, as well as its implications for market competitiveness. In this context, monetary policy has an additional role in regulating the optimal number of entrants, as well as the optimal level of production at each firm. We find that the same monetary policy rule optimal for regulating the scale of production in familiar sticky price models without entry, also generates the amount of (endogenous) entry corresponding to a flex-price equilibrium.productivity, monetary policy, market dynamics