资本账户开放对商业银行风险的影响研究——来自新兴经济体的经验证据

资本账户开放对一国宏观经济至关重要。文章总结了资本账户开放影响商业银行风险的财富与估值效应、周期效应、道德风险效应和竞争效应,利用2011-2017年期间22个新兴经济体111家商业银行的微观数据,构建动态面板广义矩估计（GMM）模型实证检验了资本账户开放对商业银行风险的影响,并且进行了异质性检验。实证结果显示：（1）资本账户开放与商业银行风险呈正U型关系。（2）资本越雄厚、规模越大的商业银行抵抗资本账户开放影响的能力越强。为避免银行体系风险的过度积累,政府应考虑银行业资本充足情况与宏观经济情况,不断探索宏观审慎工具,合理安排资本账户开放程度。     

基于城市商业银行的资本缓冲周期性行为研究

运用我国50家城市商业银行2005-2014年度的非平衡面板数据进行单步系统GMM估计,论文研究了资本缓冲与经济周期之间的关系,并分析了审慎监管压力和股权异质性结构特征对资本缓冲周期性行为的影响。实证分析结果表明城商行资本缓冲与经济周期之间呈现负相关,即资本缓冲具有显著的顺周期性。而处于审慎监管压力下的城商行,其资本缓冲的顺周期性特征较其他城商行有所减弱。此外,股权特征中控股性质和有无境外投资者持股可以影响城商行资本缓冲的顺周期性行为,但效果并不显著。因此,对于城商行而言,要加强银行体系的建设,建立“缓冲资本池”,并执行监管部门的审慎政策,以保持自身的稳定。     

Does economic uncertainty affect the soundness of banks? Evidence from emerging Asian economies

This paper examines the impact of economic uncertainty on four dimensions of banking soundness, namely, banks’ loan growth rates, interest rate spreads, capitalization and risk. By using the bank-level panel data of approximately 500 commercial banks in seven emerging Asian economies, we find consistent evidence that increased economic uncertainty decelerates banks’ loan growth, narrows their interest rate spreads and aggravates their risk, but induces banks to increase their capital holdings. Our results are shown to be robust in a series of checks that use alternative indicators of economic uncertainty and econometric methodologies.     

Fiscal incentives,competition, and investment in China

This paper explores how fiscal incentives offered to local governments in China affect investment rates in their jurisdictions. Theoretically, we build a simple fiscal competition model to establish the linkage between local fiscal incentives and expenditure policy and consequently, capital movement. The key prediction of the model, borne out by data from Chinese provinces spanning 2004–2013, is that an increase in the local corporate income tax-sharing ratio, which proxies fiscal incentives offered to local governments, motivates local governments to compete for capital investment through increased public expenditure. Our results contribute to the literature on both fiscal federalism and state capacity by showing that local fiscal incentives significantly shape policy choices and local economic performance. In addition, by exploring fiscal incentives offered to local governments, we offer a novel explanation for the unusually high investment rate in China that has been sustained over a prolonged period.     

The euro revolution and the European Union: monetary and economic cooperation in the Asia-Pacific region

A study of a coordinated monetary and economic policy for the Asia-Pacific region has long been debated. Institutionalization of the Asia-Pacific Economic Cooperation (APEC) occurred in 1989. In 1999 APEC membership had risen to 21 sovereign nation-state member economies. Annual meetings of finance ministers and heads of central banks of APEC member economies have been a regular feature, pointing to the fact that a supranational macroeconomic core, well-defined by monetary or fiscal policy guidelines alone could contribute to the success of APEC agenda of intraregional free trade, free flow of investment, and then free flow of human capital.Inauguration of the euro and European Central Bank on January 1, 1999, presents a learning model for economic regionalization in the Asia-Pacific. Hence, we propose to study the economic rationale of institutionalization of the Asia-Pacific Monetary Union with an optimal and transparent agenda for intraregional monetary policy coordination in terms of both supply of aggregate stock of money and determination of the intraregional core rate of interest, supplemented by intraregional fiscal policy coordination, which can and will provide the necessary and sufficient conditions for intraregional free market with free flow of trade, investment and human capital, contributing to the maximization of economic gains for all microeconomic actors—households as well as business corporations—belonging to all intraregional sovereign nation-state macroeconomies. This regional arrangement in the Asia-Pacific work within the framework of global institutions, thus optimally harmonizing regionalism with globalism. I have argued that the core of newly emerging economic regionalization relates to (1) a map-of-the-world view of the region, and (2) an intraregional, multilateral cooperative effort to map an economic region with well-specified micro- and macroeconomic parameters on to a specific geographic region.     

基于RAROC的我国上市商业银行经济资本配置分析

在资本约束日益严格的情形下,研究我国商业银行经济资本配置问题具有重要意义。基于2014年我国13家上市银行的相关数据,以RAROC指标为核心分析了我国上市商业银行经济资本配置的效率高低问题。研究结果显示：我国各上市商业银行风险调整后收益率的标准差水平普遍都不够理想,各类业务之间的发展均衡性不高。此外,银行各类业务发展的均衡水平与风险调整后收益率的大小匹配度不高,最终提出相关建议。     

Can good events lead to bad outcomes? Endogenous banking crises and fiscal policy responses

In this paper, we study the impact of changes in the urban labor force and foreign direct investment on the banking sector, using a dynamic general equilibrium model with a financial sector. Numerical simulations are performed using stylized Chinese data, and bank failures are generated through increases in the growth rate of the labor force, a revaluation of the exchange rate, or an increase in debt issue to finance the government deficit, as compared to a benchmark scenario in which banks remain solvent. Thus bank failures can result from what might seem to be either beneficial economic trends or correct monetary and fiscal policies. We introduce fiscal policies that modify relative factor prices by lowering the capital tax rate and increasing the tax rate on labor. Such policies can prevent banking failures by raising the return to capital. It is shown that such fiscal policies are, in the short run, welfare reducing.     

Unsustainable sovereign debt—is the Euro crisis only the tip of the iceberg?

As a direct effect of the financial crisis in 2008, public debt began to accumulate rapidly, eventually leading to the European sovereign debt crisis. However, the dramatic increase in government debt is not only happening in European countries. All major G7 countries are experiencing similar developments. What are the implications of this kind of massive deficit and debt policy for the long term stability of these economies? Are there limits in debt-ratios that qualitatively change policy options? While theory can easily illustrate these limits, where are these limits in real economies? This paper examines the relationship between sovereign debt dynamics and capital formation, and accounts for the effects of the 2008 financial crisis on debt sustainability for the four largest advanced economies. We contribute to the literature on fiscal sustainability by framing the problem in an OLG model with government debt, physical capital, endogenous interest rates, and exogenous growth. For the calibration exercise we extract data from the OECD for Germany as a stabilization anchor in Europe, the US, the UK, and Japan for almost two decades before the 2008 crisis. Except for intertemporal preferences, all parameters are drawn or directly derived from the OECD database, or endogenously determined within the model. The results of the calibration exercise are alarming for all four countries under consideration. We identify debt ceilings that indicate a sustainable and unsustainable regime. For 2011 all four economies are either close to, or have already passed the ceiling. The results call for a dramatic readjustment in budget policies for a consolidation period and long-term fiscal rules that make it possible to sustain sufficient capital intensity so that these economies can maintain their high income levels. Current conditions are already starting to restrict policy choices. However, the results also make it very clear that none of these economies would survive a second financial crisis such as the one in 2008.     

应用经济资本强化我国商业银行的风险管理

经济资本是国际先进银行正在使用的一种信用风险管理的方法,我国国有商业银行在近期也开始在风险管理体制的变革过程中引入这一方法。本文就是通过对经济资本概念的理解,对经济资本作用的阐述,进而说明经济资本的引入对于我国现阶段商业银行风险管理改革的促进作用。     

Cost and profit efficiency of Chinese banks: A non-parametric analysis

Using a non-parametric technique for data from 1995 to 2004, we investigate the cost and profit efficiency of 28 Chinese commercial banks. We examine the influence of ownership type, size, risk profile, profitability and key environmental changes on the bank efficiency using a Tobit regression. Consistent with the existing literature, we find that profit efficiency levels are well below those of cost efficiency. This suggests that the most important inefficiencies are on the revenue side. Our findings are also consistent with prior evidence on ownership and efficiency: joint-stock banks (national and city-based), on average, appear to be more cost- and profit-efficient than state-owned banks while medium-sized banks are significantly more efficient than small and large banks. These and other results suggest the need for speedier reforms to open the banking market, improving risk management, minimizing the government's capital subsidy and diversifying ownership of Chinese banks.     

Monetary policy,capital regulation and bank risk-taking：Evidence from China

This paper investigates the monetary policy’s risk-taking channel in China’s banking sector and reveals how capital buffer affects this channel in both theoretical and empirical analyses. We find that well-capitalized banks undertake less risk than those under-capitalized, which is opposite to the empirical evidence from the US. After comparing previous related theories, we point out the pattern of risk-shifting effect in China is different from that in the US. Meanwhile, we provide more substantial comparison between different types of banks. First, in the face of falling interest rates, state-owned commercial banks will undertake more risk than others. Second, the deterring effect of capital on risk varies little between banks. Third, banks short of capital can significantly reduce their risk-taking by replenishing capital through several channels.     

The high demand for international reserves in the Far East: What is going on?

This paper explores econometric and theoretical interpretations for the relatively high demand for international reserves by countries in the Far East and the relatively low demand by some other developing countries. Using a sample of about 125 developing countries, we show that reserve holdings over 1980–1996 seem to be the predictable outcome of a few key factors, such as the size of international transactions, their volatility, the exchange-rate arrangement, and political considerations. The estimating equation does a good job of predicting reserve holdings in Asia before the 1997 financial crisis. After the crisis, the estimating equation significantly underpredicts the reserve holdings of several key Far East countries, as one might expect from the Lucas Critique. This underprediction is consistent with models explaining reserve demand in developing countries. Specifically, we show that sovereign risk and costly tax collection to cover fiscal liabilities lead to a relatively large precautionary demand for international reserves. In the aftermath of a crisis, countries that have to deal with higher perceived sovereign risk and higher fiscal liabilities (both funded and unfunded) will opt to increase their demand for reserves. The models also help us understand why some developing countries do not hold large precautionary reserve balances in the aftermath of crises. Countries with high discount rates, political instability or political corruption find it optimal to hold smaller precautionary balances. We also show that models that incorporate loss aversion predict a relatively large demand for international reserves. Hence, if a crisis increases the volatility of shocks and/or loss aversion, it will greatly increase the demand for international reserves. Consequently, we conclude that the ‘puzzling’ pattern in international reserve holdings is reasonably explained by the extended models described in this paper.     

欧洲主权债务危机的内生性与外生性研究

南欧成员国社会福利过度造成的财政支出扩张与经济停滞导致的财政收入收缩是欧洲主权债务危机的内生性成因。美国因素是欧洲主权债务危机的重要外生性解释变量。美国试图通过债务危机打压欧元是为了巩固美元的全球霸权。即使欧洲主权债务危机在短期内对于欧元产生了一定的冲击,但在长期仍有可能造就一个更强大的欧元。     

The lending channel of monetary policy in Indonesia

This study evaluates the bank lending channel of monetary policy in Indonesia by using quarterly bank-level data over the period of 2005-2016. I find that the lending channel of monetary policy works for all banks, both large and small. The results suggest that higher capital buffers and better liquidity positions moderate the impact of changes in monetary policy on credit growth for large banks, while capital buffers and liquidity positions do not alter the strength of the lending channel for small banks. The findings indicate that the central bank can use prudential instruments affecting capital buffers and liquidity positions for managing the strength of adjustment in the monetary policy interest rate on bank credit growth.     

新巴塞尔资本协议下操作风险资本计算方法剖析

为了使监管资本对操作风险具有更高的敏感性,对商业银行资本金进行精确计量并使之与银行潜在经济风险相匹配是新巴塞尔资本协议的主旨。本文对新协议中关于操作风险资本金计算的理论依据和计算方法进行了剖析,有助于建立我国商业银行内部风险管理模型。近年来我国商业银行业也开始了关于操作风险的量化和管理,2004年中国工商银行首次出台了操作风险管理框架,这标志着我国商业银行操作风险管理进入实质阶段。     

Fiscal limits and sovereign default risk in Japan

It is widely known that Japan has the highest debt-to-GDP ratio among OECD countries. If Japan’s national debt continues to balloon, fiscal crisis may occur in the future. This paper develops a closed economy model with defaultable government debt and conducts a simulation to investigate future sovereign debt risk.First, we estimate the fiscal limit which is defined as the sum of the discounted maximum fiscal surplus in all future periods. It is assumed that a partial default occurs when the amount of government debt exceeds the fiscal limit. We calculate the revenue-maximizing tax rate at the peak of the Laffer curve to derive the fiscal limit. As a result, the estimated average fiscal limit in Japan is much higher than that in Greece. In the Japanese economy, households are more patient and desire greater savings from greater discount factor derived from a lower real interest rate. Household saving habits support government bonds. This is the main reason why the Japanese government could have had a massive debt in addition to some room to raise the tax rate. Second, we simulate the model, using the estimated fiscal limit and non-linear computational methods. If the government debt-to-GDP ratio continues to increase for the next 20 years, the default probability will be over 10% and the sovereign risk premium will be approximately 2%. Furthermore, the default probability will reach approximately 80% and the sovereign risk premium will be 10% 30 years later.     

经济资本在商业银行风险管理中的运用

经济资本管理作为商业银行风险管理的核心工具,其应用日益广泛。通过经济资本管理,银行可以量化经营所面临的全部风险并确定抵御风险的资本。实现经济资本管理,需要建立银行内部的评级体系,这涉及银行数据体系的建立和维护。由于整个社会信用文化的缺失以及有效数据的缺乏,我国的商业银行在这方面需做大量工作。     

主权政府债务规模影响因素的传导路径及定量分解——以美国为例

本文在前人研究的基础之上,总结了主权政府债务规模变动的主要影响因素及影响路径,并根据建立的政府债务理论模型,利用微分、积分和余值等数学方法将经济增长、通货膨胀、财政赤字及其他非常规财政因素对主权政府实际债务规模的变动进行了定量分解。最后,笔者对两次美国联邦政府债务急剧增长时期(1942～1955年和2007至今)的债务及相关数据进行了实证研究,以印证上述方法,结果发现,财政因素是美国政府债务规模急剧增长的主要原因,而面对同期的经济萧条和较高的债务负担,通货膨胀成为了政府削减债务最重要的工具。     

Are Determinants of Portfolio Flows Always the Same? ‐ South African Results from a Time Varying Parameter Var Model

The literature on determinants of cross‐border capital flows has consistently assumed the determinants of such flows to be constant throughout the sample. This paper investigates this notion by estimating the time varying relationship between portfolio flows to South Africa and two widely accepted determinants of such flows: the sovereign spread and global risk (measured by the CBOE Volatility Index, henceforth VIX). The results show that the time variation is highly significant and a constant parameter model will give biased estimates of the effects of risk on capital flows. The paper also gives important insights to South African policy makers and financial practitioners: Bond flows (non‐resident purchases of South African bonds) have become more sensitive to the VIX after 2010. Share flows were particularly sensitive at the peak of the 2008 global financial crisis, but have at other times not responded in a statistically significant manner to changes in global risk. The relationships are estimated using a time varying parameter vector autoregressive (TVP VAR) model with stochastic volatility.     

Explaining Interest Rate Spreads in Ghana*

Abstract: The question of the optimal spread between bank lending rates and rates that banks pay on deposits, which is fair to bankers, depositors and borrowers, has dogged economies for some time. In Ghana, there is widespread perception that the spread is too wide. Bankers, on the other hand justify the spread on the basis of economic variables that affect them. This paper contributes to the literature by identifying, in the case of Ghana, the short‐run response of the net interest margin of banks to changes in bank‐specific, industry‐specific and macroeconomic variables within the broad framework of Ho and Saunders (1981) . We find that increases in the following factors significantly increase net interest margin — bank market power (or concentration), bank size, staff costs, administrative costs, extent of bank risk aversion and the rate of inflation. On the other hand, increases in the following variables decrease net interest margin significantly — bank excess cash reserves, the central bank lending rate, management efficiency and the passage of time. To help reduce interest rate margins, we recommend that banks should not get too big, the central bank should consider lowering the capital adequacy ratio and banks should be required to pass on to borrowers the full extent of reductions or increases in the central bank lending rate. Continued efforts at keeping inflation at bay will also help.