A Simple Dynamic General Equilibrium Analysis of the Trade-off Between Fixed and Floating Exchange Rates
2
Citation
0
Reference
20
Related Paper
Abstract:
This paper provides a complete analytical characterization of the positive and normative effects of alternative exchange rate regimes in a simple two-country sticky-price dynamic general equilibrium model with money, technology, and government spending shocks. A central question addressed is whether fixing the exchange rate prevents macroeconomic adjustment in relative prices from occurring, in face of shocks. In the model, the exchange rate regime has implications for both the volatility and mean of macroeconomic aggregates. But the effects of the exchange rate regime depend upon both the stance of monetary policy and the way in which the exchange rate is pegged. With a passive monetary policy, a cooperative pegged exchange rate regime has no implications for macroeconomic volatility, relative to a floating regime, but implies a higher mean level of employment, capital stock, and real GDP. When monetary policy is determined optimally however, a fixed exchange rate regime leads to higher employment volatility and a lower mean level of employment and real GDP. Therefore, whether fixing the exchange rate involves a welfare cost depends critically upon the flexibility of monetary policy in responding to macroeconomic shocks.Keywords:
Exchange-rate flexibility
Cite
Floating interest rate
Cite
Citations (0)
This paper examines how much the central bank should adjust the interest rate in response to real exchange rate fluctuations. The paper first demonstrates in a two-country Dynamic Stochastic General Equilibrium (DSGE) model, that the home bias in consumption is important to duplicate the exchange rate volatility and exchange rate disconnect documented in the data. When home bias is high, the shock to Uncovered Interest-rate Parity (UIP) can substantially drive up exchange rate volatility while leaving the volatility of real macroeconomic variables, such as GDP, almost untouched. The model predicts the volatility of the real exchange rate relative to that of GDP increases with the extent of home bias. This relation is strongly supported by the data. Then a second-order accurate solution method is employed to solve the model and compare the conditional welfare under different policy regimes. The results suggest that the monetary authority should not seek to vigorously stabilize exchange rate fluctuations. In particular, when the central bank does not take a strong stance against the inflation rate, exchange rate stabilization may induce substantial welfare loss. The model also suggests no welfare gain from the international monetary cooperation, which extends Obstfeld and Rogoff's (2002) findings to a DSGE model.
Cite
Citations (8)
This paper presents new empirical evidence on the effects of monetary policy shocks on U.S. exchange rates, both nominal and real. Three measures of monetary policy shocks are considered: orthogonalized shocks to the Federal Funds rate, the ratio of Non Borrowed to Total Reserves and the Romer and Romer (1989) index. Using data from the flexible exchange rate era, we find that expansionary shocks to U.S. monetary policy lead to sharp. persistent depreciations in U.S. nominal and real exchange rates as well as to sharp. persistent increases in the spread between various foreign and U.S. interest rates. The temporal pattern of the depreciation in U.S. nominal exchange rates following a positive monetary policy shock is inconsistent with simple overshooting models of the type considered by Dornbusch (1976). We also find that U.S. monetary policy was less volatile under fixed exchange rates than under floating exchange rates. Finally, we find less evidence that monetary policy shocks had a significant impact on U.S. real exchange rates under the Bretton Woods agreement.
Empirical evidence
Cite
Citations (70)
We propose a model of exchange-rate regime choice which accounts for the existence of a continuous range of regimes, the need for real exchange-rate adjustment in response to shocks , the existence of capital account shocks and of balance-sheet effects, the sensitivity of prices to the nominal exchange rate, and the need for a commitment to make any given regime sustainable . Non-ordered Logit estimations on a cross-section sample of 126 emerging and developed countries before and after 1997-1998 currency crises broadly support our approach. We characterize those countries for which there is still a case for intermediate exchange rate regimes.
Sample (material)
Cite
Citations (38)
We compare international monetary arrangements that differ in the degree of both policy activism and exchange rate flexibility in a model with policy credibility, nominal wage rigidities and unobservable shocks. Three results stand out. First, the selection of the exchange rate regime is less important than the choice of the degree of activism. Second, unlike conventional wisdom, activistic policies tend to fare worse than passive ones. And third, a passive, fixed exchange rate system has good properties for macroeconomic stability. The results suggest that when the monetary authorities operate under conditions of incomplete information, a passive, fixed exchange rate regime represents a good overall choice.
Perfect information
Cite
Citations (0)
Fixed exchange rates are less volatile than floating rates. But the volatility of macroeconomic variables such as money and output does not change very much across exchange rate regimes. This suggests that exchange rate models based only on macroeconomic fundamentals are unlikely to be very successful. It also suggests that there is no clear tradeoff between reduced exchange rate volatility and macroeconomic stability.
Cite
Citations (44)
Exchange-rate flexibility
Cite
Citations (13)
Macro
Open economy
Fixed exchange rates
International Fisher effect
Small open economy
Cite
Citations (1)
We develop a simple general equilibrium framework to study the effect of the exchange rate system on trade and welfare. An important feature of the model is deviations from purchasing power parity, caused by rigid price setting in buyers' currency. We find the following. First, exchange rate stability is not necessarily associated with more trade.In a simple benchmark model with separable preferences and only monetary shocks, trade is unaffected by the exchange rate system, consistent with most evidence. Second, both trade and welfare can be higher under either exchange rate system, depending on preferences and on the monetary policy rules followed under each system. Finally, in general there is no one-to-one relationship between the levels of trade and welfare across exchange rate systems.
Terms of trade
Cite
Citations (1)
This paper provides a complete analytical characterization of the positive and normative effects of alternative exchange rate regimes in a simple two-country sticky-price dynamic general equilibrium model with money, technology, and government spending shocks. A central question addressed is whether fixing the exchange rate prevents macroeconomic adjustment in relative prices from occurring, in face of shocks. In the model, the exchange rate regime has implications for both the volatility and mean of macroeconomic aggregates. But the effects of the exchange rate regime depend upon both the stance of monetary policy and the way in which the exchange rate is pegged. With a passive monetary policy, a cooperative pegged exchange rate regime has no implications for macroeconomic volatility, relative to a floating regime, but implies a higher mean level of employment, capital stock, and real GDP. When monetary policy is determined optimally however, a fixed exchange rate regime leads to higher employment volatility and a lower mean level of employment and real GDP. Therefore, whether fixing the exchange rate involves a welfare cost depends critically upon the flexibility of monetary policy in responding to macroeconomic shocks. 1
Exchange-rate flexibility
Floating exchange rate
Cite
Citations (20)