Income averaging and progressive taxation

This paper examines a simple scheme for the taxation of income on the basis of an average of income over three years, and where no tax is paid in arrears. It is shown that individuals have greater liquidity than under a conventional system. Longitudinal data on incomes of several cohorts of males in the U.K. are used to estimate the possible effects on total revenue. The effect on inequality is also briefly examined.     

Ability transmission,endogenous fertility and educational subsidy

In this study, we attempt to investigate how educational subsidy, childcare allowance and family allowance affect economic growth and income distribution on the basis of simulation models which incorporate intergenerational ability transmission and endogenous fertility. The simulation results show that financial support for higher education can both increase economic growth and reduce income inequality, especially if the abilities of parent and child are closely correlated. In contrast with educational subsidy, raising childcare allowance or family allowance has limited impacts on growth and income inequality.     

On the optimal income taxation and educational decisions

In this paper we consider three different ways of incorporating individuals' educational choices into the design of optimal income tax policy. In one variant of the model (case 2), where an individual chooses his education before knowing his ability and after that education makes his labour supply decisions on the basis of known ability, it is shown that qualitative features of the optimal income tax schedule are not similar to those of the standard optimal income tax model. The marginal tax rate is generally not zero at the endpoints of distribution but is most likely negative. Using numerical methods, some interesting features quite different from earlier numerical results are revealed, especially in the second case. For example, the marginal tax rate is non-decreasing in income for a substantial income range. In addition, our calculations support neither the traditional views on the egalitarian nature of equal education nor its disadvantageous consequences in the perfect utilitarian society.     

Income distribution and redistribution through taxation: An international comparison

Income tax progressivity is studied with Generalized Entropy measures of inequality. Luxembourg Income Study data sets for nine countries are used for international comparison and analysis. progressivity indices are generated by using the Generalized Entropy family as well as Atkinson measures. We further our understanding by examining pre-tax and post-tax measures of inequality based respectively on gross and disposable household incomes. The decomposition property is shown to be desirable for enhancing our knowledge of income inequality and the redistributive effect of income taxes. Thus decomposition based on family size and number of earners is conducted. We learn that countries vary in their emphasis regarding redistributive effects of income taxes.     

Income segregation and local progressive taxation: Empirical evidence from Switzerland

This study investigates spatial income segregation in fiscally decentralized urban areas. The theoretical part proposes the progressivity of local income taxes as a new theoretical explanation for income segregation. The empirical part studies how income tax differentials across municipalities affect the households' location decisions. I use data from the Swiss metropolitan area of Basel that contains tax information on all moving households in 1997. The location choice of the households is investigated within the framework of the random utility maximization model. Different econometric specifications of the error term structure, such as conditional logit, nested logit and multinomial probit, are compared. The empirical results show that rich households are significantly and substantially more likely to move to low-tax municipalities than poor households. This result holds after controlling for alternative explanations of segregation. Social interactions and distance from the central business district are established as other major factors for income segregation. Households in general tend to choose locations close to other households like themselves.     

Income taxation of U.S. households: Facts and parametric estimates

We use micro data from the U.S. Internal Revenue Service to document how Federal Income tax liabilities vary with income, marital status and the number of dependents. We report facts on the distributions of average taxes, properties of the joint distributions of taxes paid and income, and discuss how taxes are affected by marital status and the number of children. We also provide multiple parametric estimates of tax functions for use in applied work in macroeconomics and public finance.     

Human capital, inequality, endogenous growth and educational subsidy: A theoretical analysis

This paper develops an endogenous growth model with dualism in human capital accumulation of two types of individuals. The government imposes a proportional income tax on rich individuals and uses the tax revenue to finance the educational subsidy given to poor individuals. We find out the properties of the optimal tax financed educational subsidy policy in the semi-stationary equilibrium of the model using the technique of Stackelberg differential game.     

Income taxation with intergenerational mobility: Can higher inequality lead to less progression?

We introduce the notion of social mobility into an optimal income tax model. This is done by allowing earning abilities to be partly innate and partly acquired through investments in human capital (education). The implications for the optimal re-distributive policy are studied.     

Income shifting, investment, and tax competition: theory and evidence from provincial taxation in Canada

We study corporate income taxation when firms operating in multiple jurisdictions can shift income using tax planning strategies. Because income of corporate groups is not consolidated for tax purposes in Canada, firms may use financial techniques, such as lending among affiliates, to reduce subnational corporate taxes. A simple theoretical model shows how income shifting affects real investment, government revenues, and tax base elasticities, depending on whether firms must allocate income to provinces or not. We then analyze data from administrative tax records to compare the behavior of corporate subsidiaries that may engage in income shifting to comparable firms that must use the statutory allocation formula to determine their taxable income in each province. The evidence suggests that income shifting has pronounced effects on provincial tax bases. According to our preferred estimate, the elasticity of taxable income with respect to tax rates for “income shifting” firms is 4.9, compared with 2.3 for other, comparable firms.     

Risk-taking and taxation

Conclusions This survey has considered the effects of taxation on risk-taking from both a partial and a general equilibrium viewpoint. The most relevant results to emerge at a very general level are that in the former taxation will typically increase risk-taking, while in the latter it is typically better to tax risky industries more heavily than safe; both results are contrary to conventional views.While the work surveyed shows that substantial progress has been made on this question it also shows that there remains much to be done. This seems to fall into three categories. Firstly, the investigation by variational methods of the properties of an optimal (not necessary linear) tax function in a simple model; secondly, the combination of these ideas on the optimal taxation of risky property income with those in the taxation of labor income, and also of expenditures; and finally, the incorporation of risk into all forms of optimal taxation model, not only those explicitly concerned with risky assets. These however are far from simple problems.This paper was presented at the International Economic Association Workshop in Economic Theory, Bergen 1971; I should like to thank the IEA for a stimulating month, and participants for comments, particularly J. A. Mirrlees for suggesting the analysis on page 207f. I am also grateful to A.B.Atkinson for comments.     

Multilateral subsidy games

This paper examines the rationale for multilateral agreements to limit investment subsidies. The welfare ranking of symmetric multilateral subsidy games is shown to depend on whether or not investment levels are “friendly”, raising rival profits in total, and/or strategic complements, raising rival profits at the margin. In both Cournot and Bertrand competition, when spillovers are low and competition is intense (because goods are close substitutes), national-welfare-maximizing governments over-subsidize investment, and banning subsidies would improve welfare. When spillovers are high, national governments under-subsidize from a global welfare perspective, but the subsidy game is welfare superior to non-intervention. For helpful comments we are grateful to two referees, to Arijit Mukherjee, and to participants in seminars at Prague and UCD, at the EEA Conference in Lausanne and at the GEP Conference on “New Directions in International Trade Theory” at the University of Nottingham, June 2007. Dermot Leahy acknowledges the support of the Science Foundation Ireland Research Frontiers Programme (Grant MAT 017).     

Externalities and optimal taxation

This paper reexamines the optimal tax design problem (income and commodities) in the presence of externalities. The nature of the second–best, and the choice of the tax instruments, are motivated by the informational structure in the economy. The main results are: (i) environmental levies (linear or nonlinear) differ in formula from Pigouvian taxes by the expressions for the optimal tax on private goods; (ii) externalities do not affect commodity tax formulas (linear and nonlinear) for private goods; (iii) externalities do not affect the income tax structure if commodity taxes are nonlinear and affect it if commodity taxes are linear; and (iv) a general income tax plus strictly Pigouvian taxes are sufficient for efficient taxation if individuals of different types have identical marginal rates of substitution (at any given consumption bundle).     

Contingent wage subsidy

This paper proposes a policy aimed at tackling unemployment that arises from macroeconomic coordination failure. The policy offers firms wage subsidies payable only if the total number of new hires made across the economy is below a prespecified threshold. Subsidies provide incentives for firms to create jobs but the policy's goal is to generate a sufficiently large amount of employment spillovers to set off hiring complementarities taking employment beyond the threshold. Thus, subsidies are not distributed but the policy achieves a Pareto improvement. The market structure is important for policy design. Aggregative game techniques prove useful for the oligopsonistic case.     

Domestic export subsidy and foreign welfare

In this paper we present an analysis based on imperfect competition to examine the conditions under which an export subsidy of the domestic country will not only increase its own welfare, but also raise the welfare of the importing country and hence the world as a whole. Under these conditions, it is then suggested that relaxation of GATT restrictions on export subsidies might be feasible to some extent.     

Copyright protection and hardware taxation

This paper investigates the recently practiced method of taxing hardware and transferring the proceeds to software makers, or artists in general. We characterize the conditions under which the policy of compensating copyright owners for infringements on their intellectual property using hardware taxation is inefficient.     

Unemployment insurance and redistributive taxation

This paper studies the simultaneous determination of the socially optimal levels of unemployment insurance, income taxation and experience rating. It argues that there is a normative justification for state unemployment insurance. When the government wishes to use redistributive taxes, but cannot enforce lump-sum transfers, it is not socially optimal for there to be full experience rating of unemployment insurance schemes: one distortion should be used to off-set another. The state must then intervene in the provision of insurance for those without jobs.     

Self-selection and Pareto efficient taxation

This paper analyses the set of Pareto efficient tax structures. The formulation of the problem as one of self-selection not only shows more clearly the similarity between this problem and a number of other problems (such as the optimal pricing of a monopolist) which have recently been the subject of extensive research, but also allows the derivation of a number of new results. We establish (i) under fairly weak conditions, randomization of tax structures is desirable; (ii) if different individuals are not perfect substitutes for one another in production, then the general equilibrium effects—until now largely ignored in the literature—of changes in the tax structure may be dominant in determining the optimal tax structure; in particular if the relative wage of high ability and low ability individuals depends on the relative supplies of labor, the optimal tax structure entails a negative marginal tax rate on the high ability individuals, and a positive marginal tax rate on the low ability individuals (the marnitude of which depends on the elasticity of substitution); (iii) if individuals differ in their preferences, Pareto efficient taxation may entail negative marginal tax rates for high incomes; while (iv) if wage income is stochastic, the marginal tax rate at the upper end may be 100%.Our analysis thus makes clear that the main qualitative properties of the optimal tax structure to which earlier studies called attention are not robust to these attempts to make the theory more realistic.     

Markov-perfect optimal taxation

In this paper we study optimal taxation in a dynamic game played by a sequence of governments and the private sector. We focus on the Markov-perfect equilibrium of this game under two different assumptions on the extent of government's intra-period commitment, which in turn define two within-period timings of actions. Our results show that the extent of government's intra-period commitment has important quantitative implications for policies, welfare, and macroeconomic variables, and consequently that it must be explicitly stated as one of the givens of the economy, alongside preferences, markets and technology. We see this as an important result, since most of the previous literature on Markovian optimal taxation has assumed, either interchangeably or unnoticeably, different degrees of government's intra-period commitment.     

Generalized cash-flow taxation

We show the unique form that must be taken by a tax system based entirely on realization accounting to implement a uniform capital income tax, or, equivalently, a uniform wealth tax. This system combines elements of an accrual based capital income tax and a traditional cash-flow tax, having many of the attributes of the latter while still imposing a tax burden on marginal capital income. Like the traditional cash-flow tax, this system may be integrated with a tax on labor income. We also show how such a tax can be supplemented with an optional accounting for a segregated subset of actively traded securities, subjected separately to mark-to-market taxation at the uniform capital income tax rate, to permit a fully graduated tax system applicable to labor income.     

Commodity taxation and parallel imports

We examine the interaction between commodity taxes and parallel imports in a two-country model with imperfect competition. While governments determine non-cooperatively their commodity tax rate, the volume of parallel imports is determined endogenously by the retailing sector. We compare the positive and normative implications of having commodity taxes based on destination or origin principle. We show that, as the volume of parallel imports increases, non-cooperative origin taxes converge, while destination taxes diverge. Moreover, origin taxes are more similar and lead to higher aggregate welfare levels than destination taxes.