最优税收理论及对我国税制改革的政策启示

最优税收理论是近年来经济学家们比较感兴趣的研究领域之一。最优税收理论主要包括商品税与所得税的组合理论、最优商品税、最优所得税三个方面。本文旨在阐述、评价最优税收理论的主要内容,并在此基础上,得出对我国的税制改革的政策启示     

The long run effects of changes in tax progressivity

This paper compares the steady-state outcomes of revenue-neutral changes to the progressivity of the tax schedule. Our economy features heterogeneous households who differ in their preferences and permanent labor productivities, but it does not have idiosyncratic risk. We find that increases in the progressivity of the tax schedule are associated with long-run distributions with greater aggregate income, wealth, and labor input. Average hours generally declines as the tax schedule becomes more progressive implying that the economy substitutes away from less-productive workers toward more-productive workers. Finally, as progressivity increases, income inequality is reduced and wealth inequality rises. Many of these results are qualitatively different than those found in models with idiosyncratic risk, and therefore suggest closer attention should be paid to modeling the insurance opportunities of households.     

HOW SHOULD CAPITAL BE TAXED?

This survey discusses how capital should be taxed in advanced economies. We review the theoretical optimal tax literature, survey empirical studies on the distribution of capital and the distortionary costs of capital taxation, and analyze the desirability of specific taxes on capital income, wealth, property, inheritances, and corporate profits. Our overall conclusion is that capital taxation plays an important role in an optimal tax system, but only certain ways of taxing capital are able to strike a balance between optimality and administrative feasibility.     

The effect of property taxes on vacation home growth rates: Evidence from Michigan

The Tiebout model assumes that individuals sort to the jurisdiction which best matches their fiscal preferences. However, there is a paucity of reliable estimates for the impact of tax changes on household mobility. We utilize a state mandated school finance reform and temporal differences in vacation home densities to provide a unique test of this fundamental Tiebout assumption. The results show that changes in property taxes explain a significant amount of the variation in vacation home growth; a 3–4 mil decrease in property tax rates is associated with an increase of approximately one vacation home per square kilometer.     

NIT picking: The macroeconomic effects of a Negative Income Tax

I study a revenue-neutral reform of the U.S. income tax and welfare system that involves the adoption of a Negative Income Tax (NIT). The reform is undertaken in a life-cycle economy with individual heterogeneity and uninsurable idiosyncratic labor risk. The optimal NIT consists of a 22% rate and a transfer equivalent to 11% of per-capita GDP. The ex-ante average welfare gain is a 2.1% annual increase of individual consumption. I show that a NIT outperforms a flat tax reform (income tax plus deduction) by a considerable margin. The key consequence of the reform is that high-productivity agents increase their relative importance in the labor supply at the expense of low-productivity agents.     

INTERNATIONAL CORPORATE TAX AVOIDANCE: A REVIEW OF THE CHANNELS,MAGNITUDES, AND BLIND SPOTS

This paper reviews the rapidly growing empirical literature on international tax avoidance by multinational corporations. It surveys evidence on the main channels of corporate tax avoidance including transfer mispricing, international debt shifting, treaty shopping, tax deferral, and corporate inversions. Moreover, it performs a meta-analysis of the extensive literature that estimates the overall size of profit shifting. We find that the literature suggests that, on average, a 1 percentage-point lower corporate tax rate will expand before-tax income by 1%—an effect that is larger than reported as the consensus estimate in previous surveys and tends to be increasing over time. The literature on tax avoidance still has several unresolved puzzles and blind spots that require further research.     

How should heavy-duty trucks be taxed?

This paper develops and implements an analytical framework for estimating optimal taxes on the fuel use and mileage of heavy-duty trucks in the United States, accounting for external costs from congestion, accidents, pavement damage, noise, energy security, and local and global pollution. The analysis allows for endogenous fuel economy, increased auto travel in response to reduced truck congestion, and distinguishes driving by truck type and region. We estimate the optimal (second-best) diesel fuel tax at $1.12 per gallon and implementing it increases welfare by $1.34 billion per annum. Optimizing over both fuel and mileage taxes, and differentiating mileage taxes by vehicle type and region, yields progressively higher welfare gains. The most efficient tax structure involves a diesel fuel tax of 69 cents per gallon and charges on trucks that vary between 7 and 33 cents per mile; implementing this tax structure yields estimated welfare gains of $2.06 billion.     

Carbon taxes and the double dividend hypothesis in a recursive-dynamic CGE model for Spain

A carbon tax is potentially a policy that can reduce CO₂ emissions and mitigate climate risks, at lowest economy-wide costs. We develop a dynamic CGE model for Spain to assess the economic and environmental effects of a carbon tax, and test the double dividend (DD) hypothesis. We simulate the impact of three carbon taxes: €10, €20 and €30 per ton of CO₂. For each tax, four ‘revenue recycling’ scenarios are examined: a reduction of taxes on capital, on labor, on value-added tax, and a scenario in which revenues are not recycled. We find a DD for taxes of €10/ton and lower, within five to seven years of implementation. We estimate an annual CO₂ emissions reduction of around 10% with this tax. Under some circumstances, the DD can be achieved for a tax of €20/ton. In any case, recycling revenues to cut pre-existing taxes reduces costs of imposing carbon taxes.     

财政体制研究

中国共产党第十七次代表大会,将科学发展观作为未来执政的纲领,在以人为本的原则指导下,更加重视民生问题。然而,要想真正贯彻落实十七大精神,加快财税体制改革,改变我国多年来形成的分税制中不合理情况,已经迫在眉睫。     

The Spatial Effects of Wage or Property Tax Differentials, and Local Government Choice between Tax Instruments

This paper considers the spatial effects (on wages, employment, and business capital as functions of location) of a localized differential in source-based wage tax rates or business property tax rates between (for example) a central city and the surrounding suburbs. A simple model is used in which business production uses only labor and capital inputs. Consumers have fixed residential locations but may commute to work. Wage and property tax differentials have effects that are similar in some ways but different in other ways. If given a choice, a local government would choose to set its business property tax rate equal to zero and use only a wage tax.     

The role of disgust sensitivity in volunteer recruitment and retention

In the United States, many volunteers contribute unpaid labor to nonprofit organizations. This labor includes direct volunteer service (working in close physical proximity to individuals who receive assistance, such as homeless and elderly individuals) and indirect volunteer service (administrative or fundraising tasks that do not require direct engagement with the target population). This paper extends the marketing theory of product contagion, in which proximity to disgust‐inducing stimuli devalues consumer products, to preferences for direct versus indirect volunteer activities. A study conducted among U.S.‐based adults found that higher sensitivity to disgust led to a greater preference for indirect volunteer service opportunities over direct volunteer opportunities. This result—which did not differ by gender—was mediated by the likelihood that indirect (vs. direct) volunteering was perceived as representative of volunteer work. Disgust sensitivity did not predict the total amount of volunteer work performed. Implications for recruitment and retention of volunteers are discussed.     

On revenue recycling and the welfare effects of second-best congestion pricing in a monocentric city

This paper examines congestion taxes in a monocentric city with pre-existing labor taxation. When road toll revenue is used to finance labor tax cuts, 35% of the optimal road tax in our numerical model does not reflect marginal external congestion costs, but rather functions as a Ramsey–Mirrlees tax, i.e. an efficiency enhancing mechanism allowing for an indirect spatial differentiation of the labor tax. This adds a quite different motivation to road pricing, since welfare gains can be produced even in absence of congestion. We find that the optimal road tax is non-monotonic across space, reflecting the different impacts of labor supply elasticity and marginal utility of income, which both vary over space. The relative efficiencies of some archetype second-best pricing schemes (cordon toll, flat kilometer tax) are high (84% and 70% respectively). When road toll revenue is recycled lump-sum, the optimal toll lies below its Pigouvian level. Extensions in a bimodal framework show that the optimality of using road toll revenue to subsidize public transport depends on the initial inefficiency in public transport pricing.     

Tax resistance, economy and state transformation in China and Europe

This article considers the distinct ways in which Chinese and European governments have historically approached taxation. The similarities of popular resistance in both regions to taxation deemed illegitimate contrast with the diverse solutions to tax collection put forward under varied political systems. Differences in state relations with elites, the intensity of demands for revenues and the kinds of strategies developed to secure additional funding contribute to the definition of distinct patterns of political change. Tax operations can therefore serve as a useful diagnostic for comparing broader economic and political developments in China and Europe over the past several centuries. Received: August 28, 1999 / Accepted: January 20, 2000     

论我国房产税的计税依据

我国将稳步推进房产税的改革,而在改革的过程中需要准确界定房产税的计税依据。为此本文首先分析和比较了面积、市场价值和租金收入三种类型的房产税计税依据的优点和缺点,在此基础上结合公平性的要求、我国现行税收征管水平以及房地产市场现状等情况,提出我国应以市场价值为基准确定房地产税税基。对于房地产市场价值的评估办法,笔者认为居住用房地产价值的评估应该采用“城乡有别”的办法——城市和县城的居住用房地产采用市场比较法进行价值评估;农村地区的房地产采用重置成本法进行价值评估;对于营业用房地产,则采用收益法评估其市场价值。     

General equilibrium and optimal taxes

It is shown that if subsidies are not excessive, there exists a general competitive equilibrium in the presence of a complex tax structure. Furthermore, under certain continuity assumptions, a tax structure which is optimal from the social point of view can be determined. Procedures maximize quasi-concave after tax profit functions. Consumers have convex budget sets reflect- ing their income from sales and profits minus taxes on fixed income and progressive sales taxes. Their preferences are interdependent, intransitive and incomplete. The government provides public goods and determines the optimal tax regime on the basis of its preferences on the final competitive consumption allocation.     

我国个人所得税改革的误区及其突破

我国个人所得税改革存在一定的误区:税制改革的重点在于流转税、当前个税属于综合与分类相结合的税收模式、劳动所得作为个税的改革核心等。反思改革误区,我国个人所得税改革应实现三点突破:一是个税改革重点应由劳动所得转向资本所得,以股息和红利所得作为资本所得课税的改革核心,取消根据持有时间长短而差别计税的优惠政策;二是不断扩大个人所得综合征税的范围,逐步实现对资本所得的综合课税、以半二元模式作为我国综合与分类相结合的个税改革模式;三是缓步实现对个人所得税的"增税"调整,促进我国税制结构向"双主体"模式合理过渡。     

Local tax interaction and endogenous spatial weights based on quality of life

This paper studied the role of municipal quality of life as a driver of strategic tax interactions among local governments. A number of studies point out the existence of strategic interactions using spatial econometric models in which the spatial weights are mostly based on non-economic criteria or basic economic variables such as per capita gross domestic product (GDP). We propose the more sophisticated well-being indicator of municipal quality of life as the driver for these interactions. To deal with the potential endogeneity, we rely on instrumental variable estimators. The empirical analysis focuses on the main local tax in Spain (property) and on municipalities with more than 50,000 inhabitants, and it confirms the relevance of differentials in quality of life for the understanding of tax choices.     

Factor substitution and taxation in a finance constrained economy

In this paper, we examine the effects of constant-rate factor taxation on macroeconomic stability in the Woodford (1986) model. Our focus is on how the degree of factor substitution, as measured by the elasticity of factor substitution (EOS) in production, affects different balanced-budget tax rules. Analytically, we show that indeterminacy can occur under capital income taxation only when the EOS is very low, whereas indeterminacy under labor income taxation is not subject to the EOS restriction. This finding is robust when we tax all of the factor incomes with equal rates. Thus, in terms of macroeconomic stability, taxing capital income is preferred to taxing labor income.     

Real options and human capital investment

This paper extends the standard human capital model with real options. Real options influence investment behavior when risky investments in human capital are irreversible and individuals can affect the timing of the investment. Option values make individuals more reluctant to invest in human capital and, as a result, required returns on the investment increase. Real options may help to explain a larger human capital premium for higher education, smaller responsiveness of higher educational investments to financial incentives, and larger sensitivity of higher educational investments to low-return outcomes and human capital risks. Higher tax rates (or lower subsidies) depress human capital investments, but to a lesser extent than in the standard human capital model if not all direct costs are tax-deductible. A flat income tax remains neutral if education expenditures are fully deductible.     

Simulating fundamental tax reforms in an aging Japan

This paper studies in a quantitative way the macroeconomic and welfare effects of introducing progressive expenditure taxation, in a situation of the aging of the Japanese population. It undertakes a simulation analysis taking account of the general equilibrium effects of intragenerational inequality, which increases with a transition to an aging society. The simulation results suggest that progressive expenditure taxation has advantages over progressive labor income taxation on the grounds of efficiency and equity. Thus, a shift to progressive expenditure taxation can overcome the large welfare loss that would occur under the current tax system as Japan ages.