Optimal exchange-rate policy in an open economy

Summary Based on an empirical model constructed here and a quantified macroeconomic loss function, the analysis shows, by means of optimal control techniques, that a managed floating exchange rate would have been the optimal exchange arrangement for The Netherlands in the first half of the 1970s. Freely floating rates would have been the second-best solution. For both arrangements as well as for the adjustable peg the optimal time paths and various characteristics are deduced. Furthermore, quantification shows thatopenness does not exert the theoretically anticipated effect on a country's need for fixed exchange rates.     

Stabilization of effective exchange rates under common currency basket systems

We investigate the extent to which a common currency basket peg would stabilize effective exchange rates of East Asian currencies. We use an AMU (Asian Monetary Unit), which is a weighted average of ASEAN10 plus 3 (Japan, China, and Korea) currencies, as a common currency basket to investigate the stabilization effects. We compare our results with another result on stabilization effects of the common G3 currency (the US dollar, the Japanese yen, and the euro) basket in the East Asian countries [Williamson, J., 2005, A currency basket for East Asia, not just China. In: Policy Briefs in International Economics, No. PB05-1. Institute for International Economics]. We obtained the following results: first, the AMU peg system would be more effective in reducing fluctuations of the effective exchange rates of East Asian currencies as a number of countries applied the AMU peg system increases in East Asia. Second, the AMU peg system would more effectively stabilize the effective exchange rates than a common G3 currency basket peg system for four (Indonesia, the Philippines, South Korea, and Thailand) of the seven countries. The results suggest that the AMU peg system would be useful for the East Asian countries whose trade weights on Japan are relatively higher than others. J. Japanese Int. Economies 20 (4) (2006) 590–611.     

What Makes Currencies Volatile? An Empirical Investigation

Real effective exchange rate volatility is examined for 90 countries using monthly data from January 1990 to June 2006. Volatility decreases with openness to international trade and per capita GDP, and increases with inflation, particularly under a horizontal peg or band, and with terms-of-trade volatility. The choice of exchange rate regime matters. After controlling for these effects, an independent float adds at least 45% to the standard deviation of the real effective exchange rate, relative to a conventional peg, but most other regimes make little difference. The results are robust to alternative volatility measures and to sample selection bias.     

On the Sources of Inflation in Kenya: A Model‐Based Approach

We develop a semi‐structural new‐Keynesian open‐economy model – with separate food and non‐food inflation dynamics to study the sources of inflation in Kenya in recent years. To do so, we filter international and Kenyan data (on output, inflation and its components, exchange rates and interest rates) through the model to recover a model‐based decomposition of most variables into trends (or potential values) and temporary movements (or gaps) – including for the international and domestic relative price of food. We use the filtration exercise to recover the sequence of domestic and foreign macroeconomic shocks that account for business cycle dynamics in Kenya over the last few years, with a special emphasis on the various factors (international food prices, monetary policy) driving inflation. We find that while imported food price shocks have been an important source of inflation, both in 2008 and more recently, accommodating monetary policy has also played a role, most notably through its effect on the nominal exchange rate. We also discuss the implications of this exercise for the use of model‐based monetary policy analysis in sub‐Saharan African countries.     

Strong Currency and Weak Currency

This paper presents a two-country model in which two currencies compete with each other. There exists an equilibrium in which the two currencies with different rates of inflation circulate as media of exchange despite neither currency being required to be used for transactions. Taxes payable in local currency and asymmetric injection of fiat money by the government through purchases of a certain good generate demands even for the currency with a higher inflation rate. In such an equilibrium, the government that issues the currency with a lower rate of inflation collects seigniorage not only from its own residents but from the residents of the other country provided that the rate of inflation is positive. The strong currency in the sense of a low inflation rate becomes an international medium of exchange. Policy games, in which the two governments simultaneously choose and commit to tax rates and inflation rates, are also examined. We show, among other things, that the equilibrium rate of inflation is zero in this policy game. In other words, unlike a common argument, the rate of inflation does not go below zero. This result is due to the fact that a negative rate of inflation induces a negative amount of seigniorage andvice versa. Some alternative currency regimes are examined. Even for a country with a weak currency, abandonment of its currency leads to a lower level of welfare. Monetary unions are briefly discussed as well.J. Japan. Int. Econ., Dec. 199812(4), pp. 305–333. University of Tokyo, Tokyo, Japan; University of Tsukuba, Ibaraki, Japan.     

Optimal currency shares in international reserves: The impact of the euro and the prospects for the dollar

Foreign exchange reserve accumulation has risen dramatically in recent years. The introduction of the euro, greater liquidity in other major currencies, and the rising current account deficits and external debt of the United States have increased the pressure on central banks to diversify away from the US dollar. A major portfolio shift would significantly affect exchange rates and the status of the dollar as the dominant international currency. We develop a dynamic mean-variance optimization framework with portfolio rebalancing costs to estimate optimal portfolio weights among the main international currencies. Making various assumptions on expected currency returns and the variance–covariance structure, we assess how the euro has changed this allocation. We then perform simulations for the optimal currency allocations of four large emerging market countries (Brazil, Russia, India and China), adding constraints that reflect a central bank's desire to hold a sizable portion of its portfolio in the currencies of its peg, its foreign debt and its international trade. Our main results are: (i) The optimizer can match the large share of the US dollar in reserves, when the dollar is the reference (risk-free) currency. (ii) The optimum portfolios show a much lower weight for the euro than is observed. This suggests that the euro may already enjoy an enhanced role as an international reserve currency (“punching above its weight”). (iii) Growth in issuance of euro-denominated securities, a rise in euro zone trade with key emerging markets, and increased use of the euro as a currency peg, would all work towards raising the optimal euro shares, with the last factor being quantitatively the most important. J. Japanese Int. Economies 20 (4) (2006) 508–547.     

Revisiting the Phillips curve for Indonesia: What can we learn from regional data?

This study seeks new empirical evidence of the Phillips curve in Indonesia, an emerging and geographically diversified economy. There are three important contributions from this research. First, applying panel econometric method to exploit regional variation, the study resolves the issue of using on-target national inflation rates that potentially causes weakening inflation-output link. Second, the research examines the relevance of mining industry for output gap measurement at regional level. Third, it highlights the differences in the Phillips curve between the west and east regions owing to their different underlying economic structures. Our estimation using regional data support the validity of the Phillips curve relationship in Indonesia. Backward-looking inflation expectations, exchange rate dynamics and international prices also significantly affect inflation. In addition, the effect of output gap on inflation is larger if the mining sector is excluded from output gap measurement. Finally, we find apparent differences between the west and the eastern regions in the slope of Phillips curve, as well as in the degree of inflation persistence and exchange rate pass-through. The results are robust to alternative specification. Our study adds significantly to the empirical literature on the Phillips curve and have meaningful policy implications.     

On the conduct of monetary policy in Vietnam

Vietnam has the highest inflation rate in Southeast Asia (over 20 per cent year‐on‐year in 2011). This paper examines the extent to which inflation in Vietnam is due to its conduct of monetary policy. It is argued that, had the central bank implemented policy on a more timely basis, inflation would not have been as high as it was, but the more fundamental problem is that the central bank does not have the tools it needs to conduct monetary policy effectively. Monetary policy is further complicated by Vietnam's exchange rate policy. By choosing to peg the currency and maintain fairly free capital mobility, the country has all but given up the ability to pursue an independent monetary policy. As a consequence, the central bank is forced to attempt to sterilise its foreign exchange interventions, which it is ill‐equipped to do. The paper argues that financial sector liberalisation is needed not only to promote growth but also to maintain macroeconomic stability.     

Some aspects of the impact of inflation on the debt burden of developing countries

The effect of inflation on the external indebtedness of developing countries is examined in this UNCTAD paper in a more comprehensive framework than is usually the case. The conventional view on this has been that international inflation reduces the ‘real’ burden of external debt. However, viewed in the context of the net effect of inflation on the import capacity of debtor developing countries, the paper shows that the situation is by no means so simple. It demonstrates by examining the cases of a sample of 71 developing countries that the effect of price increases of developing countries' imports (relative to price increases for their exports) caused by international inflation can and often has more than offset the so-called favourable effect on the burden of debt. For example in 1975, a year with particularly high inflation, no less than 75% in the sample experienced negative consequences. In these cases, therefore, international inflation on balance has reduced import capacity and thus made it more not less difficult for them to maintain servicing on their external debt and so increased the ‘real’ burden of their debt. Thus the UNCTAD paper brings into serious question the conventional wisdom on this important issue.     

Exchange Rate Variability and the Macro-economy: Evidence from Developing and Developed Countries

Abstract

Using annual data, the paper studies the time-series evidence regarding the allocation of fluctuations in the exchange rate between demand components, real growth, and price inflation in a sample of developing and advanced countries. The evidence reveals patterns of interaction between the macro-economy and exchange rate variability. Across developing countries, appreciation decreases the cost of imports and price inflation, while depreciation shrinks the output supply, indicating high dependency on imported goods. The reduction in output supply correlates with higher inflation and an increase in the import value. In contrast, the evidence of the negative effect of currency appreciation on output growth is more prevalent across advanced countries, while depreciation stimulates competitiveness, resulting in higher demand for exports, investment and consumption. Across developing countries, exchange rate variability decreases trend real growth and increases trend price inflation. Across advanced countries, exchange rate variability decreases trend real growth while increasing the variability of price inflation and import growth. Minimizing variability of the exchange rate would be beneficial to sustain higher growth and reduce cyclical variability in developing and advanced countries.     

Financial market integration,exchange rate policy,and the dynamics of business and employment in Korea

We study the consequences of different degrees of international financial market integration and exchange rate policies in a calibrated, medium-scale model of the Korean economy. The model features endogenous producer entry into domestic and export markets and search-and-matching frictions in labor markets. This allows us to highlight the consequences of financial integration and the exchange rate regime for the dynamics of business creation and unemployment. We show that, under flexible exchange rates, access to international financial markets increases the volatility of both business creation and the number of exporting plants, but the effects on employment volatility are more modest. Pegging the exchange rate can have unfavorable consequences for the effects of terms of trade appreciation, but more financial integration is beneficial under a peg if the economy is subject to both productivity and terms of trade shocks. The combination of a floating exchange rate and internationally complete markets would be the best scenario for Korea among those we focus on.     

Revisiting the Phillips curve for India and inflation forecasting

This paper focuses on modeling and forecasting inflation in India using an augmented Phillips curve framework. Both demand and supply factors are seen as drivers of inflation. Demand conditions are found to have a stronger impact on non-food manufactured products (NFMP) inflation vis-a-vis headline wholesale price inflation; moreover, NFMP inflation is found to be more persistent than headline inflation. Both these findings support the use of NFMP inflation as a core measure of inflation. But, the impact of global non-fuel commodities on NFMP inflation is found to be substantial. Inflation in non-fuel commodities is seen as a more important driver of domestic inflation rather than fuel inflation. The exchange rate pass-through coefficient is found to be modest, but nonetheless sharp depreciation in a short period of time can add to inflationary pressures. The estimated equations show a satisfactory in sample as well as out-of-sample performance based on dynamic simulations. Nonetheless, forecasting challenges emanate from volatility in international oil and other commodity prices and domestic food supply dynamics.     

Exchange Rate Pass-through,Unemployment and Optimal Implementable Monetary Policy Rule for Emerging Economies

Abstract

This paper develops a small open economy model with nominal rigidities and search-matching frictions to study the implications of exchange rate pass-through for monetary policy in emerging countries. I find that, with complete exchange rate pass-through, the optimal policy rule features unemployment targeting as well as inflation targeting. However, the welfare gain from responding to unemployment fluctuations diminishes as the rate of exchange rate pass-through to import prices decreases. With low exchange rate pass-through, the optimal monetary policy is strict inflation targeting.     

Currency Networks, Bilateral Exchange Rate Volatility and the Role of the US Dollar

We investigate monthly bilateral exchange rate volatility for a large sample of currency pairs over the period 1999?C2006. Pegs (particularly to the US dollar) and managed floats tend to have lower volatility than independent floats. A deeper investigation shows that the peg effect operates almost entirely through currency networks (i.e. where two currencies are pegged to the same anchor currency), and the lower volatility of US dollar pegs reflects the size of the US dollar network. Managed floats show clear evidence of tracking the US dollar, further increasing the effective size of the US dollar network. Inflation undermines the currency-stabilizing effect of peg networks. Currencies in smaller peg networks have higher unweighted but not trade-weighted exchange rate volatility, which is consistent with anchors being chosen to minimize trade-weighted volatility. The size of the effective US dollar network revealed here is a plausible explanation of the rarity of basket pegs. Volatility also reflects a range of structural factors such as country size, level of development, population density, inflation differentials and business cycle asymmetry.     

Inflation Targeting in ASEAN‐10

The paper addresses the empirical question of whether economies that do not systematically target inflation (non‐inflation targeters) experience higher exchange rate volatility as compared with inflation targeters in 10 countries of the Association of Southeast Asian Nation (ASEAN) from 1990 to 2010. The paper examines the role of real exchange rate, exchange rate volatility and the reaction functions of central banks using dynamic panel estimation techniques. The results indicate that the output gap offers more useful information than the inflation gap in setting interest rates for inflation targeters, implying that the real term is more important than the nominal term. In turn, this suggests that an increase in interest rate can be wielded swiftly to reduce real gross domestic product and suppress inflation. The real exchange rate appears as a weaker determinant in setting interest rates for non‐inflation targeters. Inflation targeters experienced lower exchange rate volatility compared with non‐targeters in the ASEAN, which implies that implementation costs to their domestic economies may be marginally lower. Meanwhile, the non‐targeters follow a mixed strategy as both the inflation and real exchange rate are used as instruments to set the interest rates.     

PPP: <Emphasis Type="Italic">Delusion</Emphasis> or <Emphasis Type="Italic">Reality</Emphasis>? Evidence from a Nonlinear Analysis

In this paper we analyze the validity of the purchasing power parity (PPP) in a nonlinear framework using data for 18 bilateral US dollar exchange rates. Following Enders and Ludlow (2002), we use unit root and cointegration tests that do not assume a specific nonlinear adjustment. We find evidence of non-linear mean reversion in deviations from the PPP equilibrium in 11 out of 18 currencies. Additionally, to disentangle the respective contribution of exchange rate and prices to the adjustment toward the long run equilibrium, we estimate a Vector Error Correction Model. According to our empirical analysis, there exists a nonlinear mechanism to correct for deviation from the PPP equilibrium that comes mainly from the exchange rates. This is consistent with theoretical arguments on international goods markets under transaction costs as well as with an emerging strand of empirical literature. These results highlight the importance of neglecting the possibility of nonlinearity in the debate about the PPP and provide empirical evidence that supports the scenario of the PPP hypothesis as a reality.     

Implicit exchange regimes in Central and Eastern Europe: a first exploration

This paper attempts to identify implicit exchange rate regimes for currencies of the Central and Eastern European Countries vis-à-vis the euro. To that end, we apply a sequential procedure that considers the dynamics of exchange rates to data covering the period from 1977:01 to 2006:02. Our results would suggest that implicit bands have existed in many subperiods for almost all currencies under study. Once we detect de facto discrepancies between de facto and de iure exchange rate regimes, we propose a model in order to explain these decisions. Our results suggest a positive association between the previous inflation rate and the probability of a peg with the euro, and a negative association with past unemployment rate.

Exchange Rate Pass-Through: Evidence Based on Vector Autoregression with Sign Restrictions

We estimate exchange rate pass-through (PT) into import, producer and consumer price indexes for nine OECD countries, using a method proposed by Uhlig (2005). In a Vector Autoregression (VAR) model, we identify the exchange rate shock by imposing restrictions on the signs of impulse responses for a small subset of variables. These restrictions are consistent with a large class of theoretical models and previous empirical findings. We find that exchange rate PT is less than one at both short and long horizons. Among three price indexes, exchange rate PT is greatest for import price index and smallest for consumer price index. In addition, greater exchange rate PT is found in an economy which has a smaller size, higher import share, more persistent exchange rate, more volatile monetary policy, higher inflation rate, and less volatile aggregate demand.     

Exchange rate regime switching in Malaysia and Singapore in response to China’s move to a basket peg: A DSGE analysis

Motivated by the observation that when China broke from its US dollar peg in 2005, Malaysia and Singapore likewise loosened their currency ties to the US dollar, this paper considers how these two countries might best respond to a hypothetical transition by China to a new basket peg regime. We specify five alternative exchange rate strategies that encompass fixed, basket, and floating regimes and gradual versus sudden transitions. To project outcomes for macroeconomic variables under these alternative regimes, we apply a dynamic stochastic general equilibrium (DSGE) model of a small open economy and incorporate exogenous shocks as actually occurred from 2005 Q1 to 2014 Q4. We then compare the strategies based on values of a cumulative loss function defined on the output gap, the inflation rate, and the real effective exchange rate. The exercise reveals that a gradual adjustment to a basket peg with long-term optimal weights is the first-best policy for both countries, where optimal weights are derived to minimize the loss function. Further, both a sudden shift to a basket peg with optimal weights and a sudden shift to a floating rate regime are superior to maintaining the dollar peg in Malaysia, but not to maintaining the existing basket peg in Singapore.     

TRADE PATTERNS AND EXCHANGE RATE REGIMES: TESTING THE ASIAN CURRENCY BASKET USING AN INTERNATIONAL INPUT‐OUTPUT SYSTEM

This paper aims at analyzing exchange rates and trade patterns of Indonesia, Malaysia, the Philippines, Thailand, China, Korea, Singapore, and Taiwan in relation to Japan and the United States, with reference to the Asian currency crises in 1997. In order to analyze these issues, we constructed an international input‐output model linked with macroeconometric models of the ten countries/regions. Analyses on the Asian exchange rates with a currency basket peg framework show that the Asian exchange rate policy was the de‐facto dollar peg policy. As for trade patterns in relation to the yen‐dollar rate; when a country/region's industrial structure is similar to that of Japan's and the yen is weak, the appropriate change of the yen's weight proves to hold its competitiveness. By contrast, the weak yen shows a decrease of its imports, regarding complementary structure. In either case, however, effects are limited.