The Costs of Restrictive Trade Policies in the Presence of Factor Tax Distortions

This paper uses a numerical general equilibrium model to examine the quantitative importance of pre-existing factor tax distortions for the welfare effects of tariffs and import quotas. The presence of pre-existing taxes can greatly raise the costs of these policies, possibly by over several hundred percent. For a tariff much of this extra cost can be offset if tariff revenues are used to reduce distortionary taxes. Hence there can be a large cost discrepancy between tariffs and quotas. The optimal tariff for a country with market power in trade can be reduced to zero, unless revenues finance cuts in distortionary taxes.     

BAD taxation: Disintermediation and illiquidity in a bank account debits tax model

This paper uses a dynamic general equilibrium model to study the economic effects of bank account debits (BAD) taxation. Australia and various Latin American countries have levied or levy BAD taxes. Aspects such as financial disintermediation, market illiquidity, and impacts on dividend and interest rates are considered. Part of the BAD tax revenue may be fictitious, due to increased interest payments on government debt. The Brazilian BAD tax (CPMF) experience is evaluated. The empirical analysis confirms some theoretical predictions. Incidence base over GDP appears to be sensitive to the tax rate, possibly engendering a Laffer curve. The tax may also cause real interest rates to increase. Furthermore, the deadweight losses are relatively large, even if revenues are small. The theoretical and empirical results suggest that the BAD tax is not adequate for revenue collection. JEL Code E62 · H20     

The Marginal Cost of Public Funds in Closed and Small Open Economies

The efficiency cost of taxation has become an increasingly important consideration in the evaluation of alternative tax policy options. This paper provides a review of estimates of the efficiency costs of taxation and presents some new estimates for small open economies. The available studies suggest that, in closed economies, the distortions from taxation are highest for corporate taxes and lowest for wage taxes. This efficiency ranking of different taxes does not hold in small open economies. It is shown that, in a small open economy, this ranking is reversed. Personal income taxes are less distortionary than wage taxes primarily because the link between domestic saving and investment is severed. Corporate taxes are also less distortionary for a variety of factors, such as changes in depreciation levels, payments to foreigners and terms of trade.     

Why Capital Income Taxes Survive in Open Economies: The Role of Multinational Firms

This paper discusses the role of multinational firms and double taxation treaties for corporate income taxation in open economies. We show that it is optimal for a small open economy to levy positive corporate income taxes if multinational firms are taxed according to the full taxation after deduction system or the foreign tax credit system. Positive corporate taxes also occur in the asymmetric case where some countries apply the exemption system and others apply the tax credit system. If all countries apply the exemption system, the optimal corporate income tax is zero. We also show that, under tax competition, corporate income taxes are not necessarily too low from the perspective of the economy as a whole. While the undertaxation result is confirmed for the case of the exemption system, tax rates may also be inefficiently high if the deduction or the credit systems are applied.     

Environmental Policy and Public Revenue with International Capital Mobility

In the presence of preexisting distortionary taxes, it is often argued that auctioned emission permits are preferable to non-auctioned permits, because the former generate revenues that may be used to reduce other taxes. This paper shows that when capital is internationally mobile, it may be optimal to use a combination of non-auctioned and auctioned emission permits, for both environmental and fiscal reasons. By letting the number of non-auctioned permits be a positive function of the amount of capital used domestically, they will attract capital to the home country. This may create environmental benefits in terms of reduced transboundary pollution and may lead to increased public revenue because the price of emission permits may increase and because the tax base may be enhanced. It is also shown that the optimal number of non-auctioned permits may increase as the marginal costs of public funds increase. JEL Code: D62, F21, Q28     

Environmental Taxes and Pre-Existing Distortions: The Normalization Trap

The double-dividend hypothesisclaims that green taxes will both improve the environment andreduce the distortions of existing taxes. According to the earlierliterature on the double dividend the tax rate for pollutinggoods should be higher than the Pigovian tax which fully internalizesthe marginal social damage from pollution, in order to obtaina second dividend. On the contrary, Bovenberg and de Mooij(1994) argue that environmental taxes typically exacerbate, ratherthan alleviate, pre-existing distortions. The optimal pollutiontax should therefore lie below the Pigovian tax. This paper pointsout that there is no real contradiction between these apparentlyopposing policy recommendations. It will be shown that the differencein the results appears because, implicitly, different definitionsof the second-best optimal pollution tax are chosen.     

The composite dividend tax rate

Dividends often impose taxes on investors. However, as certain prior financial models indicate, they also can produce a tax gain from leverage. Hence the composite marginal dividend tax rate can be specified as the nominal rate minus the offsetting tax gain from leverage. Although this principle has been embedded in theoretical models for more than 40 years, no prior study has examined empirically whether the dividend-induced tax gain from leverage influences dividend policy. We address this empirical void and find dividends decrease in the nominal dividend tax rate and increase in the offsetting tax gain from leverage. In addition, we find the composite tax rate outperforms traditional measures in explaining dividend policy for our full sample of firms. Consistent with prior theory, we also find the composite rate varies in influence according to the financing source for a dividend.     

Non-Homothetic Preferences and the Non-Environmental Effects of Environmental Taxes

We show that, if the utility function is non-homothetic, environmental taxes can have positive non-environmental effects. These effects are illustrated with specific reference to taxes on gasoline and tobacco, in the context of a computational model. We also clarify the relationship between the double dividend (associated with a marginal change from a tax system with low reliance on environmentally motivated taxes) and the situation in which the optimal environmental tax rate is greater than the Pigouvian tax rate. These two situations are generated by rather similar combinations of parameters.JEL Code: H21, H23, D58     

Environmental Tax Reform in a Small Open Economy With Structural Unemployment

The paper examines the effects of an environmental tax reform in a small open economy with decentralised wage bargaining, monopolistically competitive firms and equilibrium unemployment. There is a tradable and a non-tradable sector and all firms use labour as well as an imported polluting factor of production (energy). A key result is that a tax on energy, recycled to reduce the payroll tax, reduces unemployment if there is a tradable sector wage premium. However, even if energy taxes may boost employment, welfare will not necessarily improve. Numerical simulations suggest that energy taxes in general provide an environmental dividend but also reduce real GDP.     

中国环境税的功能检视与立法路径

环境税因其具有有效筹集环保资金、调控污染与破坏环境资源的行为、提高经济增长质量和维护社会环境公平等功能而领先于传统的命令-控制型环境管理模式。但在推行中可能出现双重红利引发偏差、转嫁税负影响减排以及重效率轻公平等现象,产生功能异变。我国政府确立了税收手段保护和改善环境的治理思路,厘清环境税所具备的功能、防范其发生功能异变、明晰新形势下环境税的功能需求是引导我国环境税制顺利推行的前提。构建符合中国本土化的环境税制、实现环境税的功能应当从健全法律运行体制、明晰政府事权责划分以及完善保障性制度建设等方面进行探索和思考。     

Environmental Taxes, International Capital Mobility and Inefficient Tax Systems: Tax Burden vs. Tax Shifting

This paper deals with the so-called double dividend of an environmental tax reform. In a model with only labor and a polluting input as factors of production, we find that society faces a trade-off between internalizing environmental externalities and raising revenues in the least distortionary way. However, if capital enters the production structure, an ecological tax reform may render the tax structure more efficient from a non-environmental point of view, thereby raising not only environmental quality but also private incomes.     

On taxing capital income with income shifting

We examine a linear capital income tax and a nonlinear labor income tax in a two-type model where individuals live for two periods. We assume that taxes are paid only in the second period in which the agents receive both labor and capital income and may shift income from labor to capital. The two types of individuals may differ with respect to wage rate and initial resource endowments. In the absence of income shifting, endowment variation motivates a capital income tax which would not exist where there is pure wage rate variation. In the latter circumstance, income shifting would indeed establish a case for a capital income tax while adding variation in resource endowments would ambiguously affect the case. The asymmetric information case for a capital income tax must be traded off against distortionary effects not only on savings, but also on labor as an agent may earn labor income which is reported and taxed as capital income.      

Optimal commodity taxation with duty-free shopping

International travellers are frequently offered the opportunity to purchase a certain quantity of goods duty-free. Individuals differ in their opportunities to benefit from duty-free shopping, and we focus on the implications of these differences for optimal commodity taxation within a version of the optimal tax model of Mirrlees (Review of Economic Studies, 38, 175–208, 1971). We show how duty-free alters the constraints on the use of commodity taxes to reduce the distortionary costs of income taxation or to reflect externalities. Beyond characterising optimal taxes in the duty-free regime, we discuss conditions under which allowing duty-free would increase or reduce social welfare.      

Changes to Income Trust Taxation in Canada: Investor Reaction and Dividend Clientele Theory

Abstract:  This paper explores the relationship between tax-induced dividend clientele theory and the recent changes to the taxation of income trusts in Canada. On October 31, 2006, the Canadian government announced the Tax Fairness Plan ( TFP ) calling for the elimination of the considerable tax advantage enjoyed by income trusts. Generally, distributions from income trusts are now taxed at rates comparable to those imposed on corporate dividends. We examine market reaction to the  TFP  to address three issues: first, whether the valuation effect of a dividend tax increase is consistent with the traditional or the new view of dividend taxation; secondly, whether the market reaction to tax increases has a differential impact on firm value that is related to the tax preferences of taxable, tax-exempt, and foreign investor tax clienteles; and thirdly, whether firms change their dividend policies in response to the preference of institutional investors (tax-based dividend policy effect) or whether institutional investors are sorting themselves across firms based on their dividend policies (investor sorting effect). Our results provide strong evidence as follows. First, the valuation effect in reaction to the  TFP  announcement is consistent with the traditional view of dividend taxation – i.e. that taxes on dividends reduce the net return to investors, increase the firm's cost of capital and lower the firm's ability to access capital markets, thereby discouraging investment and savings. Secondly, we saw that trusts with a larger percentage of their units held by tax-exempt, low-tax, and foreign investors had a higher decline in value when compared with trusts held mostly by ordinary taxable investors. These results support dividend tax clientele theory. Finally, we observed changes in institutional investor clienteles consistent with the investor sorting effect.     

Complexity and Progressivity in Income Tax Design: Deductions for Work-Related Expenses

We analyze optimal income taxes with deductions for work-related or consumptive goods. We consider two cases. In the first case (called a complex tax system) the tax authorities can exactly distinguish between consumptive and work-related expenditures. In the second case (called a simple tax system) this distinction is not exact. Assuming additively separable utility functions, we show that work-related expenditures should be fully deductible in the first case while deduction rates should be less than 100 percent in the second case. Under further simplifying assumptions, we also show that the simple system can be characterized by higher tax burdens on low income earners and less redistribution.     

Environmental Policy,Efficient Taxation and Unemployment

In this paper, I consider environmental policy as part of a mixed tax problem with a general income tax and linear commodity taxes. I assume that the wage rate is determined by bargaining between unions and firms. The results show that the change in the number of employed persons, following a change in the use of a tax instrument, affects the optimal tax structure via two channels; (i) it makes the tax revenues available for public expenditures more or less costly to collect, and (ii) it affects the aggregate demand for the good that causes the environmental damage. This means that the use of taxation to counteract the labor market imperfection is not easily separated from the environmental aspects of tax policy.JEL Code: D62, H21, J60     

Pollution, Factor Taxation and Unemployment

When consumers choose between clean and dirty goods and the labour market clears, a green tax reform may not bring about a double dividend in the sense of increasing environmental quality and increasing employment. However, when firms choose between clean and dirty factors of production, and when there is unemployment, such a result is very likely to occur. The paper investigates a model of a monopolistic firm where labour and energy are factors of production and trade unions negotiate the wage rate, accepting some unemployment as a result of aggressive wage demands. It is shown that, in such a framework, a green tax reform will boost employment provided it does not increase the net-of-tax wage rate by too much. This is the case when the elasticity of substitution between labour and energy is greater than one, equal to one or not too far below one.     

Tax Competition and Foreign Capital

This paper derives welfare equivalence of double taxation rules in a tax competition model with discriminatory home taxes and the ability to finance subsidiary operations with host country capital. For a more general model, we provide sufficient conditions on the number of host sectors and factors that support double-tax-rule equivalence. Examples violating these conditions help identify economic factors under which a home country has strict preferences over double taxation rules. If the home tax rate can influence host factor prices, the home country weakly prefers deductions over credits as in the pure-home-equity financing case.     

红利税与印花税的连通机制研究

红利税率的多元化是引致投资者对股票估价差异性的原因之一,并且催生了现金股利除息前后的套利机会和增量交易。当现金股利水平超过某一临界值时,具有税负优势的投资者将在除息前买入股票,然后在股票除息后卖掉,以进行套利。这种交易将使得红利税发生额减少,印花税发生额增加,形成红利税与印花税之间的联通机制。     

Shareholder taxation and aggregate dividend payout: Evidence from the tax reform act of 1986

The effect of shareholder taxation on corporate dividend policy is a major controversy in financial economics. The Tax Reform Act of 1986 eliminated the statutory tax disadvantage of dividends versus long-term capital gains for individual shareholders. Using aggregate time series data I find evidence that corporate dividend payout has become more generous in the period after tax reform.