Common Currencies vs. Monetary Independence

We study the optimal monetary policy in a two-country open-economy model under two monetary arrangements: (a) multiple currencies controlled by independent policy makers; (b) common currencies with a centralized policy maker.
Our findings suggest that: (i) monetary policy competition leads to higher long-term inflation and interest rates with large welfare losses; (ii) the inflation bias and the consequent losses are larger when countries are unable to commit to future policies; (iii) the welfare losses from higher long-term inflation dominates the welfare costs of losing the ability to react optimally to shocks.     

Welfare cost of inflation in a stochastic balanced growth model

There is a large and growing literature on the welfare cost of inflation. However, work in this area tend to find moderate estimates of welfare gains. In this paper we reexamine welfare costs of inflation within a stochastic general equilibrium balanced growth model paying a particular attention to recursive utility, portfolio balance effects, and monetary volatility and monetary policy uncertainty. Our numerical analysis shows that a monetary policy that brings down inflation to the optimum level can have substantial welfare effects. Portfolio adjustment effects seem to be the dominant factor behind the welfare gains.     

Trend inflation and macroeconomic stability in a small open economy

This paper estimates a small open economy New Keynesian model for Australia with positive trend inflation while allowing for multiple equilibria. We first show the extent to which positive trend inflation can shrink the determinacy region. We then conduct a Bayesian estimation over two separate periods: from 1983Q1 to 1993Q1, covering the pre-inflation-targeting regime, and from 1993Q2 to 2018Q4, covering the inflation-targeting regime. We find that Australian monetary policy before the adoption of inflation-targeting permitted multiple equilibria and self-fulfilling inflation expectations to arise, resulting in exacerbated macroeconomic volatility. The implementation of inflation-targeting in Australia in the early 1990s successfully eradicated equilibrium multiplicity and sunspot shocks, and thereby drove the economy towards greater stability.     

Regime-shifts and post-float inflation dynamics of Australia

Australia's inflation rate and inflation uncertainty during the post-float era 1983Q3-2006Q4 have acted as important barometers of Australia's macroeconomic performance. The conceptualization and measurement of the nexus between inflation and inflation uncertainty is subject to complex dynamics. We use the Markov regime switching heteroscedasticity (MRSH) model to capture long-run stochastic trend and short-run noisy components. This allows us to conclude that in post-float Australia the results deviate significantly from the mainstream Friedman paradigm on inflation and its uncertainty. We also critically review the plausibility of rival paradigms e.g. Keynesian-Mundell-Fleming, Friedman-Ball, Cukierman-Meltzer and Holland, explaining this paradoxical behavior. The analyses presented here provide valuable insights to policymakers grappling with the challenge of designing monetary policy to combat the adverse effects of inflation and inflation uncertainty for Australia emerging out of the global financial crisis.     

MONETARY POLICY UNCERTAINTY AND ECONOMIC FLUCTUATIONS

We investigate the relationship between uncertainty about monetary policy and its transmission mechanism, and economic fluctuations. We propose a new term structure model where the second moments of macroeconomic variables and yields can have a first‐order effect on their dynamics. The data favor a model with two unspanned volatility factors that capture uncertainty about monetary policy and the term premium. Uncertainty contributes negatively to economic activity. Two dimensions of uncertainty react in opposite directions to a shock to the real economy, and the response of inflation to uncertainty shocks varies across different historical episodes.     

WELFARE COSTS OF SHIFTING TREND INFLATION: STAGGERED WAGE AND PRICE CONTRACTS

We develop a New Keynesian model featuring staggered price and wage contracts to study welfare costs of exogenous variations in trend inflation. The analyses show that the consequences of constant positive trend inflation and shifting trend inflation are severe, especially when trend inflation is high. Among two channels, staggered wage contracts play a vital role in transmitting adverse impacts of constant and shifting trend inflation into the economy. Without the staggered wage channel, these costs are modest. We also conduct exercises to examine the sensitivity of welfare costs to a wide range of plausible parameters. The results show that if the price and wage friction are sufficiently large, the price and wage indexation level are sufficiently small, or there is upward biased trend inflation process, the welfare costs become larger.     

The unbearable tightness of being in a monetary union: Fiscal restrictions and regional stability

We study how constrained fiscal policy can affect macroeconomic stability and welfare in a two-region model of a monetary union with sticky prices and distortionary taxation. Both government spending and taxes can be used to stabilize regional variables; however, the best welfare outcome is obtained under some tax variability and constant regional inflations. We use a variety of rules to characterize constrained fiscal policy and find that strict fiscal rules coupled with a monetary policy that targets union-wide inflation result in regional inflation stability and the welfare costs of such rules are not as unbearable as one would expect. Fiscal authorities can enhance welfare by targeting the regional output gap, while targeting regional inflation is less successful since inflation stability is guaranteed by the central bank.     

ADAPTIVE LEARNING AND MONETARY POLICY IN AN OPEN ECONOMY: LESSONS FROM JAPAN

Abstract. Motivated by Japan's economic experiences in recent decades, we incorporate adaptive learning into an open economy dynamic stochastic general equilibrium model to examine the volatility and welfare impact of alternative monetary policies. Comparing four Taylor‐styled policy rules that reflect Japan's monetary policy debates, we first show that imperfect knowledge and the associated learning process induce higher volatility in the economy and that explicit exchange rate stabilization is unwarranted. Moreover, contrary to results under the rational expectation paradigm, we find that while tight inflation controls raise output volatility, they can improve overall welfare under learning by smoothing inflation fluctuations.     

Anticipated and unanticipated money: a case study of Malaysia

The paper tests the LSW proposition that unanticipated policy changes affect real economic variables by using Malaysian data over the period 1970:1–1990:4. The empirical evidence changes in fiscal policy and balance of payments do not affect real output, thus lending support to the proposition. On the other hand, anticipated monetary policy and inflation influence output in the short-run, lending support to Mishkin's views of the economy and rejecting the LSW proposition. In addition, the long-run neutrality proposition is not supported by the data. Moreover, unanticipated changes in inflation do influence real output in the short-run lending support to the LSW proposition. However, unanticipated changes in monetary policy, balance of payments and fiscal policy do not influence real output, lending support to the classical view of the economy and rejecting the LSW proposition. Furthermore, the Monetarist's view that inflation is a monetary phenomenon is rejected. The findings also show that unanticipated movements of money supply contribute significantly to the inflation rate. The Chow test shows that the coefficients remain stable over the period of study.     

Inflation targeting in a learning economy: An ABM perspective

This paper investigates the performances of an inflation targeting regime in a learning economy framed as an Agent-Based Model (ABM). We keep our ABM as close as possible to the original New Keynesian (NK) model, but we model the individual behaviour of the agents under procedural rationality à la Simon. Accordingly, we assume that their behaviour is guided by simple rules of thumb – or heuristics – while a continuous learning process governs the evolution of those rules. Under these assumptions that also allow the emergence of agents heterogeneity, we analyze the dynamics of the economy without assuming rational expectations, and study the role that a central bank, implementing an inflation targeting regime via a monetary policy rule, can play in the orientation of these dynamics. Consequently, our main goal is to analyse the interplay between the learning mechanisms operating at the individual level and the features and performances of the inflation targeting regime. Our results point to the prime importance of the credibility of central bank's inflation target regarding macroeconomic stabilisation, as well as the beneficial role played by that target as an anchoring device for private inflation expectations. We also establish the potential welfare cost of imperfect public information and contribute to the current debate on optimal monetary policy rules under imperfect common knowledge and uncertainty.     

Should a central bank react to food inflation? Evidence from an estimated model for Chile

We examine whether food price shocks are a major source of macroeconomic fluctuations. We estimate a small open economy DSGE model using an alternative Taylor rule applied to Chilean data. The empirical evidence suggests that food inflation played a non-trivial role in shaping Chile's de facto monetary policy actions. Consistent with its commitment to price stability, the central bank increases the policy rate in reaction to food inflation. Despite an immediate monetary policy reaction to a food price shock, the policy rate gradually tapers off. This is due to a second-round effect on non-food inflation propagated by the food price shock. A main finding is that monetary policy that targets headline inflation is welfare improving.     

Economic policy uncertainty and real output: evidence from the G7 countries

We use economic policy uncertainty index, and impulse response based test to assess the impact of economic policy-related uncertainty on real economic activity. We use monthly data, over the period from 1985:1 to 2015:3, and impulse response functions to investigate how the economies of the G7 countries respond to positive and negative economic policy uncertainty shocks of different magnitudes. We find that economic policy uncertainty is countercyclical, that the effects of uncertainty shocks increase with size and that the responses of real output to positive and negative economic policy uncertainty shocks are country specific. Our research is important for policymaking and in favour of policies that remove economic uncertainty and its negative effects on the economy. We argue that some control over yellow journalism, a transparent tax system and a set of predictable fiscal and monetary policies can minimize the social costs of economic policy uncertainty.     

Jointly optimal monetary and fiscal policy rules under liquidity constraints

We study the welfare properties of an economy where both monetary and fiscal policies follow simple rules, and where a subset of agents is liquidity constrained. The welfare benefits of optimizing the fiscal rule are far larger than those of optimizing the monetary rule. The optimized fiscal rule implements strong automatic stabilizers that primarily stabilize the income of liquidity-constrained agents, rather than output. Transfers targeted to liquidity-constrained agents are the preferred fiscal instrument. The optimized monetary rule exhibits super-inertia and a weak inflation response. Optimized simple rules perform as well as the optimal policy under the timeless perspective.     

Can monetary policy stabilise food inflation? Evidence from advanced and emerging economies

This paper addresses a long-standing political debate as how effective is monetary policy to stabilise food inflation. While a wealth of theoretical literature suggests a stabilising role of monetary policy via aggregate demand channel, there exists hardly any empirical consensus on this issue. Very recently, a limited strand of empirical literature has attempted to shed light in this arena. The present study contributes to this literature by analysing the effectiveness of aggregate demand channel in presence of production cost channel of monetary policy transmission, affecting prices positively via supply side, in a panel of developed and emerging economies for the period 2006 Q1 to 2016 Q2. We find that an unexpected monetary tightening has a positive and significant effect on food inflation in both advanced and emerging economies. Our findings suggest that in the backdrop of inflationary pressure stemming from the food sector, a monetary tightening may turn out to be destabilising for the food as well as overall inflation in the economy.     

The impact of economic and monetary uncertainty on the demand for money in emerging economies

By introducing uncertainty, monetary volatility and economic volatility are said to make the public cautious, hence increase their cash holdings or their demand for money. On the other hand, because of monetary and economic uncertainty if the public seek safer assets than money, they may hold less cash. In the absence of any paper testing for the impact of economic and monetary uncertainty on the demand for money in emerging economies, this article fills the gap by considering the experiences of six Central and Eastern European emerging economies and four other emerging economies. We found that the impact is transitory in most countries. Moreover, money demand is found correctly specified and stable in most countries, suggesting that policy based on monetary targeting could still be effective despite significant output and monetary uncertainty.     

Inflation targeting and the need for a new central banking framework

This article critically analyzes inflation targeting (IT) both theoretically and empirically. IT came into prominence in the 1990s and 1 central bank after another adopted this regime in the 1990s and 2000s. Proponents of IT mainly argued that IT regime was successful on the grounds that it resulted in lower inflation rates and hence better economic performances. However, inflation rates in the world were in a downward trend from the 1980s well into the 2000s, and both IT and non-IT regimes managed to decrease their inflation rates. In addition, focusing too much on price stability through IT paved the way for permanently higher than necessary interest rates and disinflationary “tight” monetary policy periods when inflation rate was above an arbitrarily targeted level. Tight monetary policy can and do affect the real economy negatively and overemphasizing price stability may hurt the economy in terms of lower potential output, decreasing investment and more unequal income distribution. Post Keynesians offer valuable alternatives within the framework of parking-it approach to the existing monetary policy paradigm. Our main conclusion is that central banks should set the policy interest rate as low as possible and keep it there, in line with Keynesian “cheap money” policy.     

The benefits of central bank's political independence

We consider a two-tier model of monetary policy where the central banker is both subject to the explicit influence of elected political principals through contracts and the implicit influence of interest groups willing to capture monetary policy. We analyze the impact of granting independence to the central banker on the scope for capture and the agency costs of delegating the monetary policy to a central banker. Political independence increases those agency costs but significantly stabilizes the politically induced fluctuations of inflation and improves ex ante social welfare.     

Foreign output shock in small open economies: A welfare evaluation of monetary policy regimes

We examine the impact of negative foreign output shocks, which entail negative demand side effects by lowering exports and positive supply side effects by lowering oil prices, on the welfare of non-oil producing, small open economies under five exchange rate and monetary policy regimes. We use a dynamic stochastic general equilibrium model with parameter values calibrated for Hong Kong, Israel, Singapore, South Korea and Taiwan. We find that welfare levels among the five policy regimes depend on the economy's share of oil imports in world oil consumption. Hong Kong, Singapore and Israel, which have smaller shares, maximize welfare under the Taylor rule, which targets both CPI inflation and real output. South Korea, with higher shares, and Taiwan, with more rigid prices, maximize welfare under real output targeting. CPI inflation targeting, nominal output growth targeting and fixed exchange rate regimes generate lower welfare. However, optimal monetary policy, which generates the highest welfare, gives greater weight on real output than CPI inflation.     

Monetary Regime Choice and Optimal Credit Rationing at the Official Rate: The Case of Russia

ABSTRACT

Stabilizing monetary policy in a small open economy is constrained by the open economy trilemma. In this paper, we investigate whether foreign exchange market interventions and the Central Bank’s credit rationing at the official rate (CROR) may soften this constraint and improve the results of monetary policy for different monetary regimes. We construct a dynamic stochastic general equilibrium (DSGE) model appropriate for analyzing the forward-looking behavior of households facing non-zero probabilities of losing access to financial market and CROR. We have found significant credit rationing in the quarterly Russian data of 2001:Q1–2014:Q2. The probability of losing access to financial market and the probability of CROR are estimated as 22% and 66%, respectively. Using Russian data of 2001:Q1–2014:Q2 we demonstrate that CROR provoked forward-looking activity in financial market, which led to more Ruble devaluation in the crises of 2008–2009. It improved poor countercyclical performance of two Russian monetary policy rules, whereas made small effect on welfare. Welfare maximization exercises reveal a tradeoff between low-inflation and high-welfare solutions and favor of a floating exchange rate regime. We found the optimal value of the probability of CROR in both exchange rate-based and Taylor rule-based models but resulting improvement in welfare is very small.     

宏观调控与实体经济

我国当前的宏观经济面临通货膨胀和经济增长下行的双重压力,两者都会在实体经济上反映出来。针对通货膨胀应该高度关注并采取适度的宏观调控政策,但不能反应过度。现阶段的主要矛盾已经转到经济增长下行问题。宏观经济学的精髓在于均衡,合适的宏观政策应该是在保持经济增长和控制通货膨胀之间找到均衡,选择一个合适的均衡点。我国近期根据宏观经济的走势实施稳健的货币政策和积极的财政政策,意味着将会释放出数量较大的流动性,而这些流动性应该重点流向实体经济。有效的宏观调控必须是以市场化改革所形成的经济体制为基础的。不能因为宏观调控而放慢市场化改革的步伐,尤其要支持实体经济领域民营经济的发展。