Optimal Environmental Taxation with Capital Mobility*

Climate policy exemptions for energy‐intensive sectors are often justified with distributional concerns. One concern is that households employed in energy‐intensive sectors might be affected disproportionally because of (international) capital mobility. By assuming that workers cannot move freely between sectors, we can reproduce this concern: uniform climate policy causes more inequality between the sectors when capital is mobile than when it is not. However, we find that affected households can be relieved more effectively with sector‐specific labour taxes than with sector‐specific climate policy. The reason for this finding is that households benefit more directly from sector‐specific labour tax cuts than from climate policy exemptions. Keeping climate policy uniform across sectors has the added benefit of creating incentives for long‐term decarbonisation. In addition, we find that the differential effect of capital mobility depends on the government's degree of inequality aversion – redistribution is more expensive when capital is mobile.     

Factors Associated with the Presence of Domestic Energy Efficiency Measures in England

We use cross‐sectional household survey data in England between 2002–03 and 2010–11 to explore potential barriers to ownership of three common energy efficiency measures (loft insulation, cavity wall insulation and full double glazing) in residential properties. There is little compelling evidence that credit constraints, as proxied by income, education or means‐tested benefit receipt, inhibit ownership. Failures in landlord–tenant relationships, though, are a key issue: private renters are significantly less likely to have the measures in their homes than other tenure groups. More broadly, it is the characteristics of the dwelling rather than of the occupants which are most strongly related to the presence of the measures. However, relatively few factors are consistently associated with lower ownership rates over time and efficiency measures, suggesting that policies to encourage increased take‐up may need to be tailored to the specific measure.     

Removing Homeownership Bias in Taxation: The Distributional Effects of Including Net Imputed Rent in Taxable Income

The income tax systems of most countries entail a favourable treatment of homeownership, compared to rental‐occupied housing. Such ‘homeownership bias’ and its consequences for a wide range of economic outcomes have long been recognised in the economic literature. Although a removal of the homeownership bias is generally advocated on efficiency grounds, its distributional implications are often neglected, especially in a cross‐country perspective. In this paper, we aim to fill this gap by investigating the first‐order effects, in terms of distribution of income and work incentives, of removing the income tax provisions favouring homeownership. We consider six European countries – Belgium, Germany, Greece, Italy, the Netherlands and the UK – that exhibit important variation in terms of income tax treatment of homeowners. Using the multi‐country tax benefit model EUROMOD, we analyse the distributional consequences of including net imputed rent in the taxable income definition that applies in each country, together with the removal of existing special tax treatments of incomes or expenses related to the main residence; thus, we provide a measure of the homeownership bias. We implement three tax policy scenarios. In the first, imputed rent is included in the taxable income of homeowners, while at the same time existing mortgage interest tax relief schemes and taxation of cadastral incomes are abolished. In the two further revenue‐neutral scenarios, the additional tax revenue raised through the taxation of imputed rent is redistributed to taxpayers, through either a tax rate reduction or a tax exemption increase. The results show how including net imputed rent in the tax base might affect inequality in each of the countries considered. Housing taxation appears to be a promising avenue for raising additional revenues, or lightening taxation of labour, with no inequality‐increasing side effects.     

Horizontal Inequity and Vertical Redistribution with Indirect Taxes: The Greek Case*

Non‐uniform indirect taxes treat equals and those unequal differently (horizontal inequity and vertical redistribution). Horizontal inequity is caused by taste differences among similar households, but some excises are designed to reflect social, not revealed, preferences. We apply two methodologies for decomposing the overall redistributive effect of the present and three alternative indirect tax structures into vertical and horizontal effects for Greece, using the 1998–99 Household Expenditure Survey micro‐database. In all cases, the taste component is considerable, even when we allow for social preferences, while improvements in vertical redistribution can be achieved, albeit at the cost of increased horizontal inequity.     

环境税制比较研究及其对中国的借鉴

环境税制的完善有助于环境友好型、资源节约型社会的形成。作为一项重要的经济法律制度,环境税制的国外理论和经验值得我们学习和借鉴。因此,追溯环境税制的理论基础和演变历程,分析国际环境税制的设计方法,总结国际环境税制的设计经验,可以给我国环境税制的设计提供原则、目标、实施路径的参考。     

The Distributional Implications of Income Under‐Reporting in Hungary*

The ability and inclination of specific social groups to evade tax vary widely, and this leads to considerable variation in the actual tax burden on individuals with similar levels of income. Thus, ignoring tax evasion can be seriously misleading in terms of the distributive and fiscal effects of the tax system. This paper estimates the distributional implications of income tax evasion in Hungary, based on a random sample of the administrative tax records of nearly 230,000 individuals. Gross incomes declared in the administrative tax returns are compared with incomes stated in a nationally representative household budget survey. Our estimates show that the average rate of underreporting is 9–13 per cent, though this conceals a big difference between the self‐employed (who hide the greater part of their income) and employees. The estimates are likely to be lower bounds. These rates are used in a tax– benefit microsimulation model to calculate the fiscal and distributional implications of under‐reporting. Tax evasion reduces households' personal income tax payments by about 16–20 per cent. While the poverty rate increases only slightly, income inequality rises significantly, suggesting that high‐income households tend to evade tax proportionately more. Finally, we find that tax evasion largely reduces the progressivity of the tax system.     

Optimal Taxation: Merging Micro and Macro Approaches

This paper argues that the large body of research that follows Mirrlees approach to optimal taxation has been developing in two directions, referred to as the micro and macro literatures. We review the two literatures and argue that both deliver important insights that are often complementary to each other. We argue that merging the micro and macro approaches can prove beneficial to our understanding of the nature of efficient redistribution and social insurance and can deliver implementable policy recommendations.     

Redistributive impact of indirect tax reforms: Greece, 1988–2002

This paper assesses the distributional impact of indirect taxes among Greek households between 1988 and 2002, a period that coincides with the introduction of significant reforms in the tax system due to EU membership. The highly differentiated indirect tax structure prevailing at the beginning of the period had distributional benefits over the more simplified 2002 tax structure. The overall inequality of the after‐tax welfare distribution has increased by 6–12½ per cent and changes in the indirect tax system seem to explain about half of this increase. The paper also applies a recent method of measuring the distributional impact of relative price changes caused by changes in tax rates of commodities (Newbery, 1995) and establishes that indirect tax reforms introduced since 1988 had an adverse impact on the distribution of purchasing power, which nevertheless seems to be very small.     

An Economic Analysis of the UK Landfill Permits Scheme

The UK will introduce in 2004 a system of tradable permits for the landfill of municipal waste, in response to an EU directive setting limits on such activity. Tradable permits are becoming an increasingly popular method of dealing with some environmental issues — for example, sulphur dioxide (SO2) emissions in the USA. This paper describes the background to the landfill proposals and provides an analysis of how the permit system might work. Estimates are made of the possible savings in compliance costs of a permit system compared with a conventional ‘command–and–control’ approach. These estimates are subject to a considerable degree of uncertainty, related to factors discussed in the paper.     

Cost Liability and Residential Space Heating Expenditures of Welfare Recipients in Germany*

Within the German welfare system, recipients’ heating expenditures are generally fully covered by the government. This paper empirically tests the hypothesis that households receiving welfare payments turn to overconsumption of residential space heating. We use micro‐data from two different data sources to explore whether the conditional heating expenditures of these households differ significantly from those of other households. Our empirical findings suggest that even when controlling for a range of other factors, this is indeed the case, as their heating expenditures lie about 7–8 per cent above those of other households. These results are fairly robust to sensitivity analyses. Comparing the results with those for a control group, expenditures for heating are still more than 5 per cent higher. Our results imply that there is potential scope for cost savings if this policy is changed.     

Road Taxes,Road User Charges and Earmarking

The UK Road Fund was set up in 1921 and financed by earmarked taxes, but was unsuccessful as a form of road finance and abandoned in 1937. The paper examines why earmarking failed and what problems arise for replacing road taxes by hypothecated road charges. These charges would need to be regulated and could evolve into a more efficient system of road pricing. The paper claims that recent experiences with regulating capital-intensive network industries make road user charging and the commercialisation of the public highway both feasible and desirable, but that recent government proposals for local earmarked taxes are inadequate.     

实现环境利益公平分享的环境税机理

环境利益公平分享是改革发展成果分享的一项重要内容,但是现行的制度框架无法保障环境利益的公平分享。克服环境利益分享制度不公和矫正环境利益分享制度缺乏的诸多政策工具中,从环境利益分享不公的社会根源来看,环境税无疑是保障社会主体公平分享环境利益的理想的政策工具,因为环境税具有保护环境利益且公平分配环境利益的制度效应。     

Nash Equilibrium Dynamics of Environmental and Human Capital

This paper explores the Nash equilibrium dynamics of environmental and human capital in an overlapping generations model. Environmental capital is degraded by consumption but can be improved by the voluntary provision of environmental goods. Human capital is formed by a child's learning effort together with his parent's human capital and environmental capital. We show that the laissez faire economy will be either stagnant, growing, or collapsing in the long-run, depending on the returns to scale of the learning technology with respect to the two kinds of capital, the initial state of the economy, and the relative price of the environmental and consumption goods. We also examine the role of the consumption tax policy of both the short-lived and long-lived government for correcting environmental externalities.     

Export Competition and the Remission of Domestic Environmental Taxes

We consider the use of border adjustments to compensate exporters for domestic environmental taxes imposed on an intermediate good. A model of successive oligopoly is used to consider the appropriate border adjustments. In this set-up, the relative importance of the forward incidence of the environmental tax and the backward incidence of the remission play a key role. The results highlight that the simple rule employed by GATT/WTO to set the export remittance equal to the level of the environmental tax is likely to be inappropriate.JEL Code: H87, Q38     

Slowing Fossil Fuel Extraction: A Role for Taxation of Exports,Capital Gains and Interest Income

This paper develops a model of a growing open economy rich in non‐renewable resources, the extraction of which negatively impacts domestic productivity and whose sector competes with final production for capital. We analyse how tax rates on capital gains and interest income and the time trend of an export revenue tax rate could slow the extraction of resources for export. We find that taxing capital gains and interest income at the same rate and setting an export revenue tax rate to decline at the marginal social cost of extraction would defer extraction. An export revenue tax rate need not fall over time to curb depletion if capital gains are taxed at a lower rate than interest income, which is second best to taxing asset returns at the same rate when the resources sector competes for capital.     

Equity and efficiency effects of redistributive policies

How do various forms of redistribution affect the distributions of earnings and consumption and their intergenerational mobility? Do redistributive policies enhance efficiency by mitigating market imperfections? Or do they create a trade-off between equity and efficiency? To address these issues, a dynamic general equilibrium model is constructed and solved numerically. The effects of the degrees of targeting of money transfers and educational transfers and the relative performance of the two types of transfers are examined.     

Political Sustainability and the Design of Environmental Taxes

This paper studies the issue of political support for environmental taxes. The environmental tax is determined by majority voting, given a refund rule that specifies the allocation of tax proceeds. The refund rule is chosen by a welfare-maximizing constitutional planner. We show that: (i) The equilibrium tax rate is increasing in the proportion of tax reductions based on wage incomes. (ii) If labor and capital income taxes are reduced in the same proportion, to keep the government's budget balanced, majority voting yields a rate of environmental taxation that is lower than the optimal (Pigouvian) level. (iii) To mitigate this negative bias, the government reduces wage taxes by a higher proportion than capital income taxes. (iv) The final outcome will either be the Pigouvian tax or else all reductions will be given in wage taxes. This depends on individuals' preferences for the polluting good as well as wage and capital income distributions.     

Do oil prices drive food prices? The tale of a structural break

It is frequently argued that biofuel (and ethanol) promotion policies in the United States have created a link between oil and corn prices that has accentuated the recent rally in the price of that crop and its substitutes (especially soybeans). Even though it is intuitively appealing, one problem with this hypothesis is that ethanol policies have been in place in the US for more than 35 years, whereas the run up in food prices dates back only to 2006. However, a significant change in US biofuel policy during that year provides an adequate framework to test for the existence of a structural break in the stochastic properties of the corn and soybean price processes. The results show that structural stability is rejected, and the transmission of oil price innovations to corn prices has become stronger after 2006 (no changes with respect to soybeans). There is also a significant transmission of corn price innovations to oil and soybean prices. Moreover, the data show evidence of a previously non-existent cointegration relationship between oil and corn prices.     

The Distributional Effects of Indirect Tax Changes in Italy

This paper evaluatesthe distributional and welfare effects of two recent changesof Value Added Tax (VAT) and excise taxes in Italy applying andcomparing two related and complementary methods of analysis:the first based on the distributional characteristics of Feldstein(1972) and recently applied by Newbery (1995); the second basedon the theory of marginal dominance developed by Mayshar andYitzhaki (1996). The paper finds no evidence that the reformshave redistributed purchasing power among households. But themost striking result is that a simpler two-rate VAT structure,set according to the European directives on VAT coordination,could have replaced the present system producing the same revenueand increasing welfare. This last result provides a clear instancein which reducing the number of VAT rates can be welcome evenin the presence of distributional concerns.     

Effects of Family Policy Reforms in Norway: Results from a Joint Labour Supply and Childcare Choice Microsimulation Analysis*

Mothers of pre‐school children represent one part of the population that might be able to increase its labour supply. We discuss the effects of family policy changes that encourage the labour supply of these mothers, such as childcare fee reductions and increased availability of centre‐based care. The effects of policy changes are described by using a joint labour supply and childcare choice decision model. Detailed empirical results are provided with respect to mothers' labour supply, families' childcare choices, public expenditures, and distributions of income and money metric utility.