The Optimal Monetary and Macroprudential Policies for the South African Economy

We investigate the optimal design and effectiveness of monetary and macroprudential policies in promoting macroeconomic (price) and financial stability for the South African economy. We develop a New Keynesian dynamic stochastic general equilibrium model featuring a housing market, a banking sector and the role of macroprudential and monetary policies. Based on the parameter estimates from the estimation, we conduct an optimal rule analysis and an efficient policy frontier analysis, and compare the dynamics of the model under different policy regimes. We find that a policy regime that combines a standard monetary policy rule and a macroprudential policy rule delivers a more stable economic system with price and financial stability. A policy regime that combines an augmented monetary policy (policy rate reacts to financial conditions) with macroprudential policy is better at attenuating the effects of financial shocks, but at a much higher cost of price instability. Our findings suggest that monetary policy should focus solely on its primary objective of price stability and let macroprudential policy facilitate financial stability on its own.     

金融冲击、货币政策与宏观审慎政策—基于动态随机一般均衡模型的分析

通过建立包含房地产市场金融冲击的NK-DSGE模型,考察了我国货币政策与宏观审慎政策的效果。通过比较不同政策机制下金融冲击的脉冲响应函数可以发现,宏观审慎政策的引入缓和了金融冲击的效应,并且可以同时实现稳定物价和稳定金融系统的目的。社会福利分析的结果表明：(1)金融冲击下,仅对产出缺口和通胀做出反应的政策具有最低的社会福利水平;(2)如果货币政策考虑信贷市场,并同时使用反周期性宏观审慎政策,那么社会福利将得到明显的提高。这意味着金融冲击下,政府应该积极行使对信贷市场做出反应的货币政策以及反周期性宏观审慎政策相结合的政策机制。当前,在房地产市场整体不景气的背景下,我国政府积极利用金融冲击对房地产市场进行调控。因此,采用对信贷市场做出反应的货币政策以及反周期性宏观审慎政策将具有相对较好的政策效果。     

Effectiveness of monetary policy and limited asset market participation: Neoclassical versus Keynesian effects

This paper investigates the effects of limited asset market participation on the effectiveness of monetary policy in a New Keynesian Dynamic Stochastic General Equilibrium model. Although an increase in consumers who cannot access financial markets reduces the effects of interest rate policies through consumption inter-temporal allocation (neoclassical or permanent income effect), we find an opposite result: monetary policy becomes more effective as the degree of financial market participation falls. The reason has a very Keynesian flavor.     

Financial Market Turmoil： Implications for Monetary Policy Transmission in China

The recent financial market turmoil has initiated another search for insightful understanding of the interactions between the financial market and monetary policy. This paper explores these interactions in terms of the transmission mechanism of monetary policy in China. We argue that evolving financial development, enhanced by the expansion of the financial market, has altered the conventional channel for monetary transmission in China. Analyzing marked changes in the financial landscape and taking into account policy regime shifts in China, the paper provides clear evidence showing that the financial market has become a new and important channel for transmission of monetary policy in China.     

Will the Sarb always Succeed in Fighting Inflation with Contractionary Policy?

The conventional view is that a monetary policy shock has both supply‐side and demand‐side effects, at least in the short run. Barth and Ramey show that the supply‐side effect of a monetary policy shock may be greater than the demand‐side effect. We argue that it is crucial for monetary authorities to understand whether an increase in expected future inflation is due to supply shocks or demand shocks before applying contractionary policy to forestall inflation. We estimate a standard New Keynesian dynamic stochastic general equilibrium model with the cost channel of monetary policy for the South African economy to show that whether the South African Reserve Bank should apply contractionary policy to fight inflation depends critically on the nature of the disturbance. If an increase in expected future inflation is mainly due to supply shocks, the South African Reserve Bank should not apply contractionary policy to fight inflation, as this would lead to a persistent increase in inflation and a greater loss in output. Our estimation results also show that with a moderate level of cost‐channel effect and nominal rigidities, a New Keynesian dynamic stochastic general equilibrium model with the cost channel of monetary policy is able to mimic the price puzzle produced by an estimated vector autoregressive model.     

Structural Asymmetries and the Optimal Monetary Policy Instrument of the European Central Bank

Although the existence of differences in economic structure across European countries is well known, their implications for the conduct of the single monetary policy in Stage Three of EMU have not yet been analyzed. This paper explores the issue on the basis of a two-country, rational-expectations, stochastic model characterized by asymmetric structural equations and a general formulation for monetary policy. Only if financial shocks are the main source of instability can heterogeneity in structures be neglected. When real shocks to aggregate demand prevail, their geographical distribution and the difference in the elasticity of aggregate supply are the key factors governing the response to structural differences. When supply shocks predominate, irrespective of their geographical distribution monetary policy should lean against the wind with more determination than if countries were identical. Differences in the transmission lag of monetary policy or some concern for growth when pursuing price stabilization reduce the size of the correction in monetary policy called for by structural asymmetries.     

Energy price shocks,monetary policy and China's economic fluctuations

This paper develops a New Keynesian dynamic stochastic general equilibrium model with energy factors to study various channels through which China's economic fluctuations are linked to energy price shocks and to search for the optimal monetary policy to cope with energy price shocks. We conclude that there are channels through which changes in energy prices will have the following cause–effect relationships. First, a rise in energy price as a negative technology shock will raise the costs of providing capital services per unit of capital, thereby reducing output. Second, a rising energy price distorts the intertemporal choices of households and firms, creating downward pressure on the expected future return on capital. Third, an energy price shock places upward pressure on the marginal costs associated with an increase in inflation. Numerical simulation results show that a positive energy price shock has a positive effect on energy technology improvements. In addition, the effects of energy price shocks can be mitigated by nominal rigidities, and interest rate rules will determine the magnitude of those effects. Using the efficient frontier method, we also show that optimal monetary policy in China should help control energy price volatility.     

Is There a Bank Lending Channel in Southern African Banking Systems?

Abstract: Macroeconomic models currently used by policymakers generally assume that the functioning of financial markets can be fully summarized by financial prices, because the Modigliani and Miller (1958) theorem holds. However, the assumption that this theorem holds is questionable. This paper argues that there are frictions in the market which traditional models based on the Modigliani and Miller theorem fail to take into account in explaining how monetary policy and other shocks are transmitted to the economy and points to new directions. A comprehensive macroeconomic model should incorporate financial market interactions to enhance the understanding of the transmission mechanisms of monetary policy and other shocks. If market dynamics are not taken into account, macroeconomic models used by policymakers may point to wrong policy choices. Motivated by the lack of assessment of the recently launched financial reforms, deregulation, consolidations, financial innovations and joint payment systems, the paper assesses the process of monetary transmission mechanism by investigating evidence of a bank lending channel in SADC during the period 1990–2006 using data from the banking sector. Data from a panel of banks is used to identify shifts in the loan supply curve in response to changes in monetary policy using a vector autoregression (VAR) model. Although the results are mixed the paper generally reports the existence of a bank‐lending channel in all SADC countries in the sample. The take‐off point for monetary policy effects differs from one country to another.     

Monetary policy,cash holding and corporate investment: Evidence from China

This paper uses 13,766 firm-year observations between 2003 and 2013 from China to investigate the effects of monetary policy on corporate investment and the mitigating effects of cash holding. We find that tightening monetary policy reduces corporate investment while cash holdings mitigate such adverse effects. The cash mitigating role is especially significant for financially constrained firms, non-state-owned enterprises (non-SOEs) and those firms located in a less developed financial market. Cash holding also improves investment efficiency when monetary policy is tightening and tightening monetary policy enhances the ‘cash-cash flow’ sensitivity. Our empirical evidence calls for a critical evaluation on the monetary policies implemented in China which are less effective for state-owned enterprises. It also calls for a necessity for local government to further develop regional financial markets to protect vulnerable businesses, such as non-SOEs and financially constrained firms, from external shocks in order to maintain their sustainable growth and competitive advantages.     

Openness and the Effects of Fiscal and Monetary Policy Shocks on Real Output in Nigeria (1960–2003)*

Abstract: This study investigates the effects of monetary and fiscal policies on the real output growth in a small open economy. It is a country‐specific, time series study that verifies the implication of increasing economic openness on the efficacy of monetary and fiscal policy. A modified GARCH model was used to estimate the anticipated and unanticipated shocks. Two measures of fiscal and monetary shocks were combined with openness and real oil price shocks in a VECM model to assess the effects of anticipated and unanticipated policy shocks on the output equations. The empirical results showed that anticipated and unanticipated fiscal and monetary shocks had no significant positive effects on real output. This suggests that the open macroeconomic version of the policy ineffectiveness proposition was valid for both monetary and fiscal policy shocks in Nigeria. This is in consonance with earlier works in this area. Furthermore, the degree of openness and oil price shocks had a negative implication on the efficacy of macroeconomic policy in Nigeria; also in agreement with the Dutch Disease Syndrome. Finally, the policy implication of this study therefore is that trade liberalization policy should be implemented cautiously. The Nigerian economy is weak to withstand the unwholesome consequences of full economic integration.     

A Quantitative Assessment of the Role of Incomplete Asset Markets on the Dynamics of the Real Exchange Rate

I develop a two-country New Keynesian model with capital accumulation and incomplete international asset markets that provides novel insights on the effect that imperfect international risk-sharing has on international business cycles and RER dynamics. I find that business cycles appear similar whether international asset markets are complete or not when driven by a combination of non-persistent monetary shocks and persistent productivity (TFP) shocks. In turn, international asset market incompleteness has sizeable effects if (persistent) investment-specific technology (IST) shocks are a main driver of business cycles. I also show that the model with incomplete international asset markets can approximate the RER volatility and persistence observed in the data, for instance, if IST shocks are near-unit-root. Hence, I conclude that the nature of shocks, the extent of financial integration across countries and the existing limitations on asset trading are central to understand the dynamics of the real exchange rate and the endogenous international transmission over the business cycles.     

A New Keynesian model for analysing monetary policy in Mainland China

This paper adopts a four-equation New Keynesian model to evaluate the appropriateness of China's monetary policy framework. Our simulation results show that a hybrid rule that uses both interest rate and quantity of money as instruments outperforms the rules using one instrument alone at the current stage of economic and financial market development. Our analysis also shows that a sharp appreciation of the renminbi exchange rate, though effective in containing inflation pressures, would be quite disruptive to growth.     

中国国债利率期限结构突变与动因分析——基于无套利宏观金融模型的视角

已有研究表明中国宏观经济和金融市场近20年来表现出区制转换和非线性特征,在此背景下国债市场是否也存在结构性变化,将关系到利率模型的稳定性和经济政策的效果。文章基于未知间断点的结构突变方法实证检验2002年到2015年间中国国债利率期限结构,并通过把新凯恩斯动态一般均衡框架嵌入仿射无套利期限结构模型中,解释突变的宏观动因。结果认为,受2005年金融市场一系列重大改革的累积和联动影响,中国国债利率期限结构于2005年11月发生了显著的结构变化;间断后由于市场风险水平降低,货币政策波动性减小,所以利率偏离预期假说的程度锐减;与货币政策相关的斜率因子风险价格的减小是突变的关键动因。     

Dynamics of Money Market Interest Rates in Ghana: Time-Frequency Analysis of Volatility Spillovers

As the second longest practicing inflation targeting economy in Africa, it is of interest to investigate the degree to which policy interest rate influences other money market rates so as to gauge the overall effectiveness of monetary policy transmission in Ghana. This study evaluates the degree of connectedness among money market rates and also determines the most dominant money market rate(s) in Ghana. The basic finding is that the monetary policy rate has a low-to-moderate influence on volatility dynamics of other money market rates in Ghana across historical time-interval and time-frequency domains. This is a reflection of a generally weak capability of policy interest rate to drive other market rates in Ghana. Both monetary policy rate and Treasury bill rate are net transmitters of shocks, while interbank, lending and saving rates are net receivers of shocks in the money market. However, the Treasury bill emerges as the largest shock transmitter in the money market, across all forecast horizons and analytical domains. The lending rate is the largest shock recipient in the money market, largely from the Treasury bill rate which suggests ample evidence of fiscal dominance in Ghana. The study accentuates the exigency for monetary and fiscal policies to expeditiously address the domestic structural bottlenecks, especially in the financial sector and the fragile fiscal profile, in order to strengthen policy transmission in Ghana.     

数量型还是价格型货币政策比较——基于利率市场化角度的分析

利率市场化进程中,数量型还是价格型货币政策合适?文章考虑金融市场上的金融加速器特征,将其引入DSGE模型,通过校准、模拟,从宏观经济波动幅度、不同货币政策下冲击效应以及福利损失函数三方面综合分析了利率市场化过程中数量型和价格型货币政策有效性问题。研究结果显示,随着存款利率的上升,在熨平经济波动方面,价格型货币政策更有优势;在促进经济增长方面,数量型货币政策更有优势;对央行损失而言,价格型货币政策的损失更小。因此,中央银行应根据需要灵活的运用数量型和货币型搭配使用,做好数量型向价格型转变。     

Monetary analysis and the global financial cycle: An Asian central bank perspective

Emerging Asia has seen a transformation of its monetary policy environment over the past two decades. By far, the most relevant change has been the maturing of its financial systems and the growing relevance of the global financial cycle: financial inclusion has spread, financial markets have deepened and financial globalisation has linked domestic markets closer to international markets. One consequence of the maturing of the financial systems has been the weakening of the traditional case for the monetarist view of the roles of monetary aggregates in the conduct of monetary policy. In addition, the maturing of the financial systems has elevated concerns of financial stability, as both a source of shocks and a responsibility of central banks. These developments have been further complicated by monetary policy spillovers from the advanced economies. All this points to the need to consider alternatives to conventional inflation targeting frameworks. This paper lays out a policy framework based on a multi-pillar monetary policy approach as a potentially attractive alternative for EM Asia. The three pillars are based on economic, financial and exchange rate stability, respectively. This framework not only offers an alternative conceptual framework but also implies institutional reforms to ensure central banks take a longer term perspective when setting policy.     

市场信心如何影响中国经济——基于社会融资分解的视角

通过直接融资、间接融资、企业家信心、消费者信心等一系列指标构建向量自回归VAR模型,研究控制市场信心前后,直接融资和间接融资对货币政策传导的效应.研究结果表明:控制市场信心后,间接融资对货币政策最终目标的影响强于直接融资,未控制市场信心前,直接融资对货币政策最终目标的影响强于间接融资;市场信心增强了以社会融资为中介目标的货币政策的传导效率,且其对直接融资的影响强于间接融资.     

Inflation targeting in India: A comparison with the multiple indicator approach

The empirical literature on identification and measurement of the impact of monetary policy shocks on the real side of the economy is fairly comprehensive for developed economies, but very limited for emerging and transition economies. In this study, we propose an identification scheme for a developing economy (taking India as a case study), which is able to capture the monetary transmission mechanism for that economy without giving rise to empirical anomalies. Using a VAR approach with recursive contemporaneous restrictions, we identify monetary policy shocks by modelling the reaction function of the central bank and structure of that economy. The effect of monetary policy shocks on the exchange rate and other macroeconomic variables is consistent with the predictions of a broad set of theoretical models. This set-up is used to build a hypothetical case of inflation targeting where the monetary policy instrument is set after assessing the current values of inflation only. This is in contrast with the ‘multiple indicator approach’ currently followed by the Reserve Bank of India (RBI). The results in this study suggest that the demand effects of interest rate are stronger than the exchange rate effects. There is also evidence of the mitigation of potential conflict between exchange rate and interest rate, one of main monetary policy dilemmas of the RBI in inflation targeting.     

Interest Rates, Leverage, and Money

The current mainstream approach to monetary policy is based on the New Keynesian model and is expressed in terms of a short-term nominal interest, such as the federal funds rate in the United States. It ignores the role of leverage and also downplays the role of money in basic monetary theory and monetary policy analysis. But as the federal funds rate has reached the zero lower bound and the Federal Reserve is in a liquidity trap, the issue is whether there is a useful role of leverage and monetary aggregates in monetary policy and business cycle analysis. We address these issues and argue that there is a need for financial stability policies to manage the leverage cycle and reduce the procyclicality of the financial system. We also argue that in the aftermath of the global financial crisis and Great Contraction there is a need to get away from the New Keynesian thinking and back toward a quantity theory approach to monetary policy, based on properly measured monetary aggregates, such as the new Center for Financial Stability Divisia monetary aggregates.     

Variations Across Canadian Regions in the Sensitivity to U.S. Monetary Policy

This paper contributes to the research on regional economic responses to monetary policy shocks in two ways. First, rather than just model the Canadian economy at the national level, we examine the impact of monetary policy shocks across five separate Canadian regions. The second extension of the literature is our focus upon estimating the impact from both Canadian and U.S. monetary policy shocks upon regional Canadian economic activity. The findings are broadly consistent with results from previous research modeling the national Canadian economy, but noteworthy regional differences are observed. Eastern Canadian regions, defined as Ontario (ON), Quebec (QU), and Atlantic (AT), exhibit greater sensitivity to Canadian monetary policy shocks than do Western Canadian regions. We also find that U.S. monetary policy shocks have a discernable impact on Canadian regional economic activity, but the impact varies across regions. For the three Eastern Canadian regions ON, QU, and AT, there is a significant impact upon regional economic activity from a U.S. monetary policy shock, but not for the two Western Canadian regions Prairie (PR) and West (WE). Moreover, the impact on ON, QU, and AT from a fed funds shock is quite similar to the impact from a shock to the Canadian Bank Rate.