增值税扩围改革的价格影响与福利效应

"十二五"规划建议明确将"扩大增值税征收范围,相应调减营业税等税收"作为下一步税制改革的重要内容。文章通过建立价格模型分析了不同的扩围方案对减少重复征税和降低产品税负的影响,并利用住户调查数据、投入产出方法和实际税收数据测算了增值税扩围改革的福利效应。研究发现,将增值税扩大到生产性服务业将改善居民福利,但具有累退性;全面扩围的福利改善作用小于生产性扩围,但具有累进性。     

市场结构、环境税与福利效应分析

运用短期局部均衡分析方法研究完全竞争市场和垄断市场条件下环境税对社会福利的影响.结果显示:在完全竞争市场条件下,对企业征收环境税可以增进社会福利.而在垄断市场条件下,环境税的福利效应具有不确定性,这取决于垄断造成的扭曲程度.如果垄断造成的扭曲较小,环境税仍然可以提高社会福利.但无论是增进抑或降低社会福利,对垄断企业征收环境税都不可能实现最优化,因为环境税在矫正污染外部性的同时,垄断造成产量水平下降导致福利损失增加,所以只能追求一个次优的结果,次优环境税低于完全竞争条件下的标准环境税.     

Welfare and Distribution Effects of Water Pricing Policies

In this paper, distribution and welfare effects of changes in block price systems are evaluated. A method is discussed to determine, for a Marshallian demand function, equivalent variation in case of a block price system. The method is applied to compare, for the Metropolitan Region of São Paulo, alternative pricing policies on the basis of their demand, welfare and distribution effects of changing water prices. Results show that there is a trade off between average welfare and income distribution. A pro-poor price system may result in lower average welfare than a flat price system, but in higher individual welfare for the poor. Moreover, there is a trade off between revenues for the water company and income distribution. Even though pro-poor price systems may not be as good for average welfare as flat price systems, their direct effects on poverty are important. Introducing pro-poor price systems, however, may have financial consequences for the water companies.     

出口补贴与反补贴对国民福利影响的经济分析

2008年,在全球性金融危机以后,各国政府为增加就业,先后颁布了很多新的出口刺激计划,补贴与反补贴有所增加。分析了补贴与反补贴对国民经济福利的影响,主要的结论是补贴措施与反补贴措施都会导致国民经济总福利的下降,也从集体行动的角度分析了导致福利水平下降的贸易政策为什么会在民主国家实施的问题。     

我国两税合并的社会经济福利效应分析

2007年年初国务院批准了合并内、外资企业的所得税,税率为25%,并从2008年1月1日起实施。外资企业在经历了20年的税收优惠政策之后,开始承担与国内企业相同的所得税税率。统一企业所得税率在自由竞争的经济环境中有增加社会福利的效应。但由于我国仍处在经济转型过程中,内资企业和外资企业在管理体制和运行机制上有很大的不同。因此,统一税率对我国总的社会福利的影响可能与西方发达国家的影响有所不同。文章通过对我国内外资企业生产方程的不同设定来反映内外资企业的不同特点并考察统一税率对我国劳动力配置、资本需求及社会整体福利可能带来的影响。用2004-2006年的统计数据进行了模拟计算,结果表明,两税合并短期内使我国社会整体福利略有下降,在考虑国有企业冗员的情况下,两税合并使社会福利在三种情形下分别下降0.18%、0.17%和0.13%;而考虑国有企业经理负责制时,两税合并使社会福利分别下降0.25%、0.21%和0.15%。但从长期看,两税合并最终会使我国的社会福利有所增加。     

Stackelberg竞争条件下的最佳福利关税与最大收入关税

文章考察Stackelberg竞争条件下的最佳福利关税与最大收入关税。分析表明,最佳福利关税与最大收入关税的相对大小主要取决于产品之间的相互关系和国内外企业的成本差异。当产品是互补品时,最佳福利关税总是小于最大收入关税;当产品是替代品时,最佳福利关税与最大收入关税的关系,既取决于产品间的替代程度又取决于国内外企业间的成本差异。产品的替代程度较弱时,最大收入关税总是大于最佳福利关税;产品的替代程度较强时,若国内外厂商间的成本差异越小,则最佳福利关税越有可能超过最大收入关税。     

出口退税、最优货币供给及居民福利——基于新开放宏观经济学视角

将出口退税政策变量引入新开放宏观经济学的基本理论模型,分析了未预期到的出口退税冲击和货币供给冲击对消费、产出、汇率等一系列经济变量的影响,并进一步研究了出口退税政策、最优货币供给规模及居民福利的内在关系。研究表明,在相同的货币冲击条件下,出口退税政策提高了世界福利水平;在给定的福利增长目标下,出口退税政策降低了各国的货币供给扩张动机,减少了最优货币供给规模。     

税制改革、经济效率和社会福利——基于A-KOLG框架下的动态CGE模拟分析

在经典的世代交叠动态一般均衡(A-K OLG)模型的基础上,建立了一个由一系列不等式方程组所构成的"跨期动态"模型,反现实地模拟了提高间接税同时降低直接税对我国社会福利、经济效率的影响。与基期相比,减少对资本征税会带来福利增长0.34%(纯经济效率提高0.25%),减少对劳动征税会带来福利增长0.1%(纯经济效率提高0.02%)。该实证结果证明了间接税比直接税更有利于实现经济效率的理论观点。因此,提高直接税的比重是需要以一定的经济效率损失为代价的,实行该项举措应该权衡好各方面利弊、把握好改革时机。     

非线性定价的福利再分配效应研究——基于非对称双寡头市场的分析

较之"线性定价","非线性定价"在社会福利方面的优势被现有理论反复证明。在肯定"非线性定价"方式能够改进社会总福利的同时,指出并不是每一个市场主体的福利水平都能够通过"非线性定价"方式得到改进。通过建立模型、计算和比较分析,提出了在上述两种情况下,"非线性定价"可能会对特定的市场主体产生"福利剥夺",从而出现福利再分配效应。     

Social incidence and economic costs of carbon limits

This paper discusses both distributional and allocational effects of limiting carbon dioxide emissions in a small and open economy. It starts from the assumption that Switzerland attempts to stabilize its greenhouse gas emissions over the next 25 years, and evaluates costs and benefits of the respective reduction program. From a methodological viewpoint, this paper illustrates, how a computable general equilibrium approach can be adopted for identifying economic effects of cutting greenhouse gas emissions on the national level. From a political economy point of view it considers the social incidence of a greenhouse policy. It shows in particular that public acceptance can be increased and economic costs of greenhouse policies can be reduced, if carbon taxes are accompanied by revenue redistribution.     

The Foreign Trade and Sectoral Impact of Truck Road Pricing for Cross-Border Trade

Truck road pricing is on the brink of beingintroduced in a number of European countries.The experience gained from Switzerland, thefirst country worldwide to implement such adistant-dependent pricing scheme, has provedinvaluable. Nevertheless, significant questionsstill remain. The present paper attempts toprovide some clarity by analysing the welfareand sectoral impact resulting from theintroduction of truck road pricing with respectto foreign trade. It is shown that this impactcan be separated into four effects: the pureterms of trade effect, the tax revenue effect,the transit tax revenue effect and the resourcegain effect (resources set free by a reductionin transport activity). A CGE simulation ofeach of these effects identifies theirquantitative implications. Out of the foureffects the pure terms of trade effect turnsout to dominate at both the sectoral andaggregate level. It triggers a trade-inducedwelfare loss. The tax revenue effect, and lessso the transit revenue effect, mitigate thisloss. For a full road transport costinternalization a trade-induced welfare loss isquantified for Austria at 1.3%. Sensitivity ofthis and other aggregate variables is high withrespect to household reaction to transport taxrevenue refunding. The trade-induced welfareloss of variable size as explored in thisarticle counterbalances a fraction of thewelfare gain due to internalization.     

The Complete Welfare Effects of Cost Reductions in a Cournot Oligopoly

This paper provides the smallest upper bound or the critical level for a Cournot firm's market share below which its cost reduction reduces welfare. It shows that a firm's cost reduction increases social welfare with nonlinear demand and nonlinear costs if and only if its market share is above the critical level, which is equal to a weighted sum of the other firms' market shares. The paper also reports similar results for technological spill-overs within any given set of firms.     

Ambiguous Social Welfare Effects of Price Regulation Under Imperfect Competition

Conventional wisdom is that a binding price ceiling increases output and so increases social welfare if imposed on an imperfectly competitive market. However, this paper shows that a price ceiling can be harmful to social welfare even though it increases industry output and consumer surplus. This model can be applied to the pharmaceutical industry under price control in many countries, e.g., U.K., Canada, Germany and Japan.     

资源税的价格效应分析

2011年11月1日实施的资源税改革将原油和天然气由原来的从量计征改为从价计征,税率均为销售额的5％-10％,其他的资源税税日依旧是从量计征。这次的资源税改革使社会上普遍关注资源税税改后导致的资源性产品价格上涨．进而对居民消费价格指数CPI产生很大压力。文章采用实证分析方法分析资源税是否会严重影响CPI,研究结果表明资源税对CPI影响不大。     

火车票定价与社会福利

一般认为火车票市场之所以存在“倒票”都是因为价格管制的结果。价格管制导致了市场中存在套利机会,但是本文应用一个动态博弈模型论证了:对于火车票这种特殊商品,即使价格升高到供求均衡价格,依然可能存在套利机会;单纯地提高价格不仅不能消除“倒票”行为,而且损害了低收入消费者的福利。本文提出了一种差别定价方式———两期定价方法,可以驱逐市场中的“套利者”;同时,恰当的两期定价还可增进社会福利。     

人民币升值路径及其福利效果

人民币升值路径可以从时间路径和空间路径两个角度来进行研究。在多重的政策目标下，中国目前选择了渐进的升值方式，升值过程中名义汇率与物价水平共同调整。伴随有通货膨胀和资产价格泡沫的升值方式会从增量和存量两个方面改变社会的福利分配，这要求有相应的福利调整措施进行配套，以维护社会的公平和稳定。     

土地政策调整对经济发展和社会福利的影响

构建了一个土地对社会福利影响的分析模型,并用天津市的数据进行检验。研究结果表明：（1）政府对于土地供应量的控制减少了均衡资本量;（2）严格的土地政策会使单位资本产生的福利量减少;（3）土地政策的适时调整能使经济发展沿着社会福利最大化的路径发展。因此,土地政策的制定应该以社会需求为导向,并通过适时调整以实现社会福利最大化。     

经济全球化背景下的我国税制改革

随着改革步伐的加快,尤其是我国于2001年12月11日正式成为WTO一员之后,我国经济的发展与世界经济更加紧密联系在一起,到了“你中有我,我中有你”,谁也离不开谁的地步。与此同时也对我国社会经济各个领域产生了巨大的冲击,在这种趋势下,必然要求革除原有税收体制弊端,建立一种与国际税收政策相协调的税收制度,以促进我国经济的进一步发展。     

A Contribution to the Theory of Welfare Accounting

A kind of unified theory is proposed as a dynamic generalization of the standard consumer-surplus methodology for evaluating welfare changes. The unified theory allows rigorous dynamic welfare comparisons to be inferred between any two economic situations—from just knowing current incomes and observing a short-run market demand schedule. Essentially, the change in present discounted future utility is exactly captured by the formula: difference in current income plus consumer surplus . This well-known formula is thereby shown to cover a far wider class of welfare comparisons than is customarily treated in the textbook static case.