基于可流动性资产负债表的我国政府债务风险研究

政府资产是政府债务顺利偿还的基础,当政府资产低于其负债时,政府债务将面临一定风险,因此基于政府资产负债的视角,本文结合中国实际首先编制了一个简化的政府"可流动性资产"负债表,然后,分析了1998—2008年我国政府仅考虑直接债务时的政府债务风险,并且对2009—2010年的政府债务风险进行了分析。研究表明,2003—2006年因外汇储备急剧增长使我国政府债务风险总体较小且比较稳定,但因金融危机的爆发,我国政府债务风险在此期间前后的两次金融危机中都比较大,金融危机对政府债务风险的影响显著。研究还表明,积极的财政政策对短期降低政府债务风险具有明显效果,且1997年亚洲金融危机和2007年美国次贷危机对我国政府债务风险的影响具有相似性,即金融危机爆发后的几年内政府债务风险会因积极的财政政策而经历"大—小—大"的变化过程。最后,通过引入政府或有债务,分析了具有或有债务时的政府债务风险。本文认为,只要我国政府的或有债务规模不超过24万亿元人民币,则我国的政府债务风险较小。     

Corporate Debt,Hybrid Securities,and the Effective Tax Rate

Effective tax rates (ETRs) are useful tools to make comparisons between different tax systems. However, the existing ETR measures are based on rather simplifying assumptions. In particular, they disregard the existence of different kinds of debt and hybrid securities. In this paper, we use contingent‐claim analysis to calculate the ETR. We will therefore deal with both pure debt and two of the most well‐known hybrid securities, that is, convertible and reverse convertible bonds. We will show that effective taxation crucially depends on the characteristics of debt and that the existing measures of ETR can be dramatically biased, since they account neither for default risk nor for the ability to convert debt into equity.     

Capital structure choice and ownership: evidence from electronics enterprises in China

Empirical studies on capital structure mostly focus on listed companies and also on countries other than China. In this paper, we employ a panel dataset for 4,716 large and medium-sized enterprises in the Chinese electronics industry during the period 2005–2007 in order to investigate the determinants of their capital structure choice. Using the debt ratio as the dependent variable, we find that firm size and potential growth have a positive effect on the debt ratio whereas profitability has a negative effect. We show that decisions on the debt ratio are based on mixed factors that the various theories suggest. The unlisted Chinese companies which are unable to access to the securities market are prone to acquire bank loans as sources for funds which provides room for the modification of pecking order theory based on listed companies. As to ownership structure, we find that those Chinese electronics enterprises with higher portions of foreign equity tend to have lower debt ratios.     

中国主权资产负债表及其风险评估(下)

2000——2010年,中国的国民资产负债表呈快速扩张之势。对外资产、基础设施以及房地产资产迅速积累,构成资产扩张的主导因素。这记载了出口导向发展战略之下中国工业化与城镇化加速发展的历史进程。在负债方,各级政府以及国有企业的负债以高于私人部门的增长率扩张。这凸显了政府主导经济活动的体制特征。对主权资产负债表的风险评估表明:(1)总体上,中国主权净值为正,因而,在相当一段时间内,发生主权债务危机的概率极低;(2)近期的风险点主要体现在房地产信贷与地方债务上,而中国的长期风险则更多集中在对外资产负债表、企业债务与社保欠账上。这些风险大都是或有负债风险,且与过去的发展方式密切相关;(3)主权债务动态的模拟进一步揭示出维持经济增长率与利率之差对于化解债务风险的重要性。因此,转变经济发展方式,保持经济可持续增长,是应对主权债务风险的根本途径。     

Semi‐Parametric Examination of Industry Risk: The Australian Evidence

This paper examines the time variation form of the systematic risk measurement, beta, in Australian industry sectors. By using a semi‐parametric approach, the systematic risk measurement, beta, is defined as a combination of one stable parametric component and one varying non‐parametric component. Two categories of industries were identified. The Energy, Material, Mining, Industrial and Property Trust industries had a generally increasing beta for most of the sample period, while the Consumer Discretionary, Financials Excluding Property Trust, IT and Telecommunications had a decreasing beta for the same period. The betas of the Health and Utility industries are more stable than others. The variation of industry risk is linked with the market conditions, as well as the change of interest rates.     

Can debt crises be self-fulfilling?

Several papers argue that debt crises can be the result of self-fulfilling expectations that no one will lend to a country, triggering default and rationalizing the refusal to lend. I show these coordination failures can be eliminated by a combination of state-contingent securities and a mechanism that allows investors to promise to lend only if enough other investors do so as well. This suggests that runs on the debt of a single borrower (such as the government) can be eliminated and that self-fulfilling features are more plausible when externalities among many decentralized borrowers allow for economy-wide debt runs to occur.     

Non‐residents’ Holdings,Market Volatility and Public Debt Sustainability. An Analysis with Data for Italy

Non‐residents’ holdings (NRH) of debt securities have been large in euro area countries, but during the euro area debt crisis some of those countries experienced a steep contraction of such holdings. The analysis aims to provide a data‐founded explanation of what is behind the decrease observed in 2011 by testing two alternative hypotheses. At the same time, we discuss how that decrease might have endangered the sustainability of public debt and study the empirical relevance of the most important of those processes. The topics presented refer to any advanced economy, but we check the hypotheses discussed by taking Italy as a case study because of data constraints. Italy is an interesting country to consider since it is a very large debt issuer. Our results point towards the importance of market volatility to explain variations of NRH, but those holdings do not seem to influence debt sustainability.     

公共资本投资、内生经济增长与合理政府债务规模*

本文基于一个具有内生增长机制的三部门世代交叠模型,讨论了政府举债为公共投资进行融资时经济的长期均衡;同时,通过数值模拟方法考察了我国的均衡政府债务规模及其影响因素。结果表明：在特定条件下,经济系统存在一个正的均衡政府债务-产出比重,该债务比重水平明显受到公共投资—产出比重、公共投资的债务融资比重、民间资本产出弹性等参数的影响。但是,均衡政府债务比重并不是无限上升的,当上述参数超过特定临界值时,经济系统无法达到均衡,政府债务-产出之比将持续上升,财政将不可持续。另外,当民间资本产出弹性较低时,较高的均衡政府债务比重可能导致经济运行动态无效率。数值模拟结果还显示,基于不同的假设情形,我国的均衡政府债务-产出比重均在不同程度上高于当前实际的政府债务规模,这为我国在未来期间实施扩张性财政政策提供了有利的依据。     

Debt policy, corporate taxes, and discount rates

This paper applies the standard risk-neutral valuation framework to tax shields generated by dynamic debt policies. We derive a partial differential equation (PDE) for the value of the debt tax shield. For a class of dynamic debt policies that depend on the asset's free cash flows, value, and past performance, we obtain closed-form solutions for the PDE. We also derive the tax-adjusted cost of capital for free cash flows and analyze the conditions under which the weighted average cost of capital is an appropriate discount rate. Finally, we derive closed-form solutions for equity betas, which differ from the formulas that have traditionally been used to lever and unlever equity betas.     

Risk‐Off Episodes and Swiss Franc Appreciation: The Role of Capital Flows

During episodes of increased global risk aversion, or risk‐off episodes, safe haven currencies such as the Swiss franc tend to appreciate. The immediate impact of a risk‐off shock is an increase in net private inflows to Switzerland, mostly driven by a reduction in Swiss residents’ net purchases of foreign debt securities and reduced foreign exposure by Swiss banks. Given that the bulk of capital movements related to risk‐off episodes is driven by decisions of Swiss residents, capital flow management policies that discriminate based on the residency of the investor (capital controls) are not likely to be effective at reducing the impact of risk‐off episodes. However, prudential policies that limit leveraging or foreign exposure by Swiss banks may diminish the volatility of capital flows during risk‐off episodes.     

Product diversification and bank risk: evidence from South Asian banking institutions

ABSTRACT

We investigate whether the product diversification activities of South Asian banking institutions have led to an increase or decrease in their solvency and profit risks. Using the data of five countries – India, Bangladesh, Nepal, Pakistan and Sri Lanka – for the period 2000–2016, we analyse the effect of both income and assets diversification activities on the Z-score and SDs of ROA (Return on Assets) and ROE Return on Equity). Among income diversification activities, securities trading income has a significant positive influence on bank risk while other categories have no influence. With respect to assets diversification, non-interest-bearing assets and loans given to government were found to have a significant positive influence on bank risk, while mortgage loans and non-classified loans have opposite influences. However, the impacts of securities trading income and loans given to the government are mainly confined to private sector banks and state-owned banks, respectively. We also uncover some country-specific diversification influences on the above relationships.     

Consumer default with complete markets: default-based pricing and finite punishment

This paper studies economies with complete markets where there is positive default on consumer debt. In a simple tractable two-period model, households can default partially, at a finite punishment cost, and competitive intermediaries price loans of different sizes separately. This environment yields only partial insurance. The default-based pricing of debt makes it too costly for the borrower to achieve full insurance, and there is too little trade in securities. This framework is in contrast to existing literature. Unlike the literature with default, there are no restrictions on the set of state contingent securities that are issued. Unlike the literature on lack of commitment, limited trade arises without need of debt constraints that rule default out. Compared with the latter, the present approach appears to imply more consumption inequality. An extended model with an infinite horizon, idiosyncratic risk and more realistic assumptions is used to demonstrate the general validity of this approach and its main implications.     

Fiscal Prudence and Growth Sustainability: An Analysis of China's Public Debts

This paper analyses and assesses China's current fiscal system, including its basic institutional arrangements, the relationship between central and local governments, and the fiscal balance and public debt. This paper pays special attention to the local government borrowings that have increased dramatically in recent years, and tries to measure the “overall public debt risk” by including all kinds of eligible debts. This paper finds that although the large expansion of local government debt during the fiscal stimulation response to the global financial crisis was devastating, the all‐inclusive total public debt to gross domestic product ratio remains under 50%, and as long as the local debt stops growing, the risk is quite manageable. This paper also points out that more attention should be paid to improving and reforming the Chinese fiscal system, particularly the reform of the fiscal relationship between central and local governments, and the legal framework for local government debt management.     

Time-varying beta: a boundedly rational equilibrium approach

The conditional CAPM with time-varying betas has been widely used to explain the cross-section of asset returns. However, most of the literature on time-varying beta is motivated by econometric estimation using various latent risk factors rather than explicit modelling of the stochastic behaviour of betas through agents’ behaviour, such as momentum trading. Misspecification of beta risk and the lack of any theoretical guidance on how to specify risk factors based on the representative agent economy appear empirically challenging. In this paper, we set up a dynamic equilibrium model of a financial market with boundedly rational and heterogeneous agents within the mean-variance framework of repeated one-period optimisation and develop an explicit dynamic behaviour CAPM relation between the expected equilibrium returns and time-varying betas. By incorporating the two most commonly used types of investors, fundamentalists and chartists, into the model, we show that there is a systematic change in the market portfolio, risk-return relationships, and time varying betas when investors change their behaviour, such as the chartists acting as momentum traders. In particular, we demonstrate the stochastic nature of time-varying betas. We also show that the commonly used rolling window estimates of time-varying betas may not be consistent with the ex-ante betas implied by the equilibrium model. The results provide a number of insights into an understanding of time-varying beta.     

Effects of US interest rates and news on the daily interest rates of a highly indebted emerging economy: evidence from Turkey

It has been widely demonstrated that asset prices react sensitively to macroeconomic news releases both in the industrialized countries and emerging markets. However, there are contradicting results on the effects of changes in interest rates of industrialized countries on asset prices of emerging markets. In heavily indebted economies, in addition to these factors, political news and announcements from international institutions that may increase or decrease concerns about debt sustainability can affect asset prices as well. This potential notwithstanding, there has been relatively limited empirical work on the effects of such variables. The objective of this study is to quantify the impact of all of these factors on interest rates of a highly indebted emerging economy. Using daily post-crisis data of the Turkish economy we show that both good and bad political news, International Monetary Fund announcements, and European Union related news significantly affected secondary market government securities yields, whereas volatility of yields was affected mainly by bad news releases. Changes in US Treasury bond rates and ‘appetite’ for risk of foreign investors did not affect government securities yields in the period analysed.     

Fiscal Rules,Interest Payments on Debt,and the Irrelevance of the Taylor Principle

We show that in New Keynesian models with non‐neutral government debt, the Taylor principle ceases to be relevant for equilibrium determinacy if the government follows a fiscal rule of levying taxes in proportion to its interest payments on existing debt. This is in contrast with previous studies, which typically have assumed that taxes respond to the level of debt, and have found either a confirmation or reversal of the Taylor principle depending on the feedback from debt to taxes. We find, instead, that the equilibrium effect of the interest rate on debt is crucial for determinacy. If, as in our model, taxes are raised in response to debt interest payments, the range of indeterminacy monotonically decreases with the fiscal feedback parameter. When interest payments are completely tax‐financed, indeterminacy is ruled out without any restrictions on monetary policy.     

Foreign debt and economic growth

This paper empirically examines the relationship between government foreign debt and the growth rate of per capita GDP based on a total sample of 77 countries, as well as sub‐samples of various regions. Cross‐sectional estimates of the coefficient of foreign debt based on the total sample have a negative sign, but are not always statistically significant. Available data from African countries indicate that foreign debt and the growth rate of per capita GDP were negatively related at a high level of significance. For industrialized and Latin American sub‐samples, this relationship is negative but statistically insignificant. The sub‐sample Asian and other developing countries show a positive but insignificant relationship. JEL classification: F34, H6, O23.     

The pricing of time-varying beta

We generalize an asset pricing model based on the Arbitrage Pricing Theory (APT) allowing beta to be time-varying. Making beta a random variable adds flexibility to the model because permits a non-linear relation between individual returns and the set of factors, and accounts for the effect of possible omitted variables. We integrate the conditional APT with a general linear stochastic process for beta. We analyze the behavior of the conditional expected return, the conditional variance and conditional covariance of individual asset returns as functions of the conditional moments of beta. On considering time-varying betas we introduce another source of uncertainty (risk) independent of the factors. We need to disentangle if this extra risk is systematic or non-systematic. To this end, we introduce a modified conditional APT model that rationalizes why the time variation of beta may represent extra systematic risk. For a sample of individual stocks, we test the hypothesis of time-varying beta and the feasibility of the modified conditional APT. We present a test for time-varying beta based on the conditional second moments of returns. We find that there is strong evidence against constancy of betas in favor of a random coefficient model, and that the time variation of beta is due to non-systematic behavior of the firms and investors should be able to diversify this risk away.     

Sudden Stops,Time Inconsistency,and the Duration of Sovereign Debt

We study the sovereign debt duration chosen by the government in the context of a standard model of sovereign default. The government balances off increasing the duration of its debt to mitigate rollover risk and lowering duration to mitigate the debt dilution problem. We present two main results. First, when the government decides the debt duration on a sequential basis, sudden stop risk increases the average duration by 1 year. Second, we illustrate the time inconsistency problem in the choice of sovereign debt duration: governments would like to commit to a duration that is 1.7 years shorter than the one they choose when decisions are made sequentially.     

后金融危机时代中国地方债发行模式与风险管理浅析

在中国,地方政府融资渠道的变迁关系到经济增长的速度、金融系统的稳定以及中央与地方的权利配置。2011年底地方自行发债启动,这一方面确认了地方债的合法性,另一方面开始了向地方政府自主发债的过渡。在这一重要的经济制度建立之初,有必要从地方债产生的原因、存在的问题入手,借鉴国外地方债发行模式的经验,深入探讨和研究地方债的风险管理问题,为中国地方债发行的健康发展提供有益参考。