The income elasticity of tax revenue: estimates for income and consumption taxes in the United Kingdom

This paper provides estimates of individual and aggregate revenue elasticities of income and consumption taxes in the UK over the period 1989–2000. It shows how budgetary changes, including changes to income‐related deductions, have substantially affected income elasticities. The estimates of consumption tax revenue elasticities show that changes in consumption patterns over time are important. A merit of the approach used here is that elasticity estimates can be calculated readily from official published sources.     

The Elasticity of Taxable Income in New Zealand*

This paper reports estimates of the elasticity of taxable income with respect to the net‐of‐tax rate for New Zealand taxpayers. The relative stability of the New Zealand personal income tax system, in terms of marginal rates, thresholds and the tax base, provides helpful conditions for deriving these estimates. The elasticity of taxable income was estimated to be substantially higher for the highest income groups. Changes in the timing of income flows for the higher income recipients were found to be an important response to the announcement of a new higher rate bracket. The marginal welfare costs of personal income taxation were consistent across years, being relatively small for all but the higher tax brackets. For the top marginal rate bracket of 39 per cent, the welfare cost of raising an extra dollar of tax revenue was estimated to be well in excess of a dollar. Implications of the findings are that: disincentive effects of high top marginal rates can be substantial even when labour supply responses are small; the welfare costs of increases in top marginal tax rates can be high; and announcement effects of tax policy changes can lead to considerable income shifting between time periods.     

Does Germany Collect Revenue from Taxing the Normal Return to Capital?*

A widespread objection to the introduction of consumption tax systems claims that this would lead to high tax revenue losses. This paper investigates the revenue effects of a consumption tax reform in Germany. Our results suggest that the revenue losses would be surprisingly low. We find a maximum revenue loss of 1.6 per cent of annual GDP. In some years, we even find tax revenue gains. This implies that the current tax system collects little revenue from taxing the normal return to capital. Based on these results, we calculate a macroeconomic measure of the effective tax rate on capital income.     

Progression and revenue effects of income tax reform

Usually, only initial revenue effects of personal income tax reforms are considered. However, a tax reform characterized by base broadening in exchange for rate reduction can reduce the income elasticity of tax revenue. In that case, the increase in revenue after income growth will be relatively smaller: the tax reform has a negative effect on revenue in the second period. Using the microtax model of the Central Planning Bureau we simulated the effects of the Dutch Oort reform 1990 on revenue elasticities and, consequently, on tax revenue. The income tax revenue elasticity declined by 17 percent which caused an additional revenue loss of 0.6 percent in 1990, rising to 3.8 percent in 1993.     

Anticipating Tax Changes: Evidence from the Finnish Corporate Income Tax Reform of 2005*

Using register‐based panel data covering all Finnish firms from 1999 to 2004, we examine how corporations anticipated the 2005 dividend tax increase via changes in their dividend and investment policies. The Finnish capital and corporate income tax reform of 2005 creates a useful opportunity to measure this behaviour, since it involves exogenous variation in the tax treatment of different types of firms. The estimation results reveal that those firms that anticipated a dividend tax hike increased their dividend payouts in a statistically significant way. This increase was not accompanied by a reduction in investment activities, but rather was associated with increased indebtedness in non‐listed firms. The results also suggest that the timing of dividend distributions probably offsets much of the potential for increased dividend tax revenue following the reform.     

Measuring revenue responses to tax rate changes in multi-rate income tax systems: behavioural and structural factors

This paper shows how income changes in response to changes in marginal income tax rates (MTRs) translate into tax revenue changes for the familiar multi-step income tax function used in many countries. Previous literature has focused on the relatively straightforward case of a proportional income tax or the top MTR only. The paper examines revenue responses at both the individual and aggregate levels, and it is shown that for individual MTRs within a multi-rate regime, simple expressions for tax revenue responsiveness can be derived that nevertheless capture the various behavioural and structural responses to income tax reforms involving changes to multiple rates and thresholds. Illustrations are provided using changes to the New Zealand income tax structure in the 2010 budget. This reduced all marginal tax rates while leaving income thresholds unchanged.     

The Stability of Tax Elasticities over the Business Cycle in European Countries

We estimate short‐ and long‐run tax elasticities that capture the relationship between changes in national income and tax revenue. We show that the short‐run tax elasticity changes according to the business cycle. We estimate a two‐state Markov‐switching regression on a novel data set of tax policy reforms in 15 European countries from 1980 to 2013, showing that the elasticities during booms and recessions are statistically (and often economically) different. The elasticities of personal income taxes, corporate income taxes, indirect taxes and social contributions tend to be larger during recessions. Estimates of long‐run elasticities are in line with existing literature.     

湖南省税收收入与经济增长的相关分析

运用协整检验和误差修正模型,以湖南省1970～2004 年的数据为样本,对湖南省税收收入与经济增长相关性进行的实证分析表明:湖南省经济增长与税收增长基本协调,但是,在湖南省税收收入高增长的同时,也存在税收收入的弹性相对偏低的问题.这一方面说明税务部门征收管理工作的进步,另一方面也说明非税收入的规模过大,挤占了税收增长的空间.为此,应继续加强征收管理;优化收入结构,强化非税收入管理;优化产业布局,大力发展制造业和服务业.     

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.     

Childcare Assistance: Are Subsidies or Tax Credits Better?

We evaluate price subsidies and tax credits for childcare. We focus on partnered women's labour supply, household income and welfare, demand for childcare and government expenditure. Using Australian data, we estimate a joint, discrete structural model of labour supply and childcare demand. We introduce two methodological innovations – a more flexible quantity constraint that total formal and informal childcare hours are at least as large as the mother's labour supply and the explicit inclusion of maternal childcare in the utility function as a proxy for child development. We find that tax credits are more effective than subsidies in terms of increasing average hours worked and household income. However, tax credits disproportionately benefit wealthier and more educated women. Price subsidies, while less efficient, have positive redistributional effects.     

Comparing in‐work benefits and the reward to work for families with children in the US and the UK

The income transfer systems for low‐income families in the US and the UK try both to reduce poverty and to encourage work. In‐work benefits are a key part of both countries' strategies through the earned income tax credit and the working families' tax credit (and predecessors) respectively. But tax credits are only one part of the whole tax and welfare system. In‐work benefits, taxes and welfare benefits combine in both countries to provide good financial incentives for lone parents to do minimum‐wage work, but poorer incentives to increase earnings further. But direct comparisons of budget constraints hide important points of detail. First, not enough is known about what determines take‐up of in‐work benefits. Second, the considerable differences in assessment and payment mechanisms and frequency between EITC and WFTC mean that low‐income families in the US and the UK may respond very differently to apparently similar financial incentives.     

Abolishing the Tax‐Free Threshold in Australia: Simulating Alternative Reforms*

This paper examines the role of the tax‐free income tax threshold in a complex tax and transfer system consisting of a range of taxes and benefits, each with its own taper rates and thresholds. Considering a tax and benefit system with benefit taper rates whereby some benefits are received by income groups other than those at the bottom of the distribution, it is suggested that a tax‐free threshold is not a necessary requirement to achieve redistribution. Four alternative policy changes, each involving the elimination of the tax‐free threshold in Australia and designed to achieve approximate revenue neutrality, were examined using the Melbourne Institute Tax and Transfer Simulator. A range of implications were examined, including labour supply responses to tax changes and the effects of policy changes on inequality and social welfare. The results demonstrate that it is possible to eliminate the tax‐free threshold under approximate overall revenue and distribution neutrality, but that it is impossible to improve labour supply incentives at the same time. In order to achieve improved incentives, either revenue or distribution neutrality has to be sacrificed.     

Financial Capital and Taxation Policy*

This paper suggests a relatively simple analytical framework for taxing all financial arrangements. The debt/equity distinction is determined by the contingency principle. The accruals/realisation distinction is determined separately by the volatility principle. The capital/revenue character distinction is effectively removed directly or by a character hedging regime. Hybrids, synthetics, hedging arrangements and other portfolios are tax‐assessed on an aggregate, rather than a bifurcated, basis. The framework could be applied to both classical and dividend‐imputation‐based business tax systems.     

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.     

Income repatriation decision for multinational corporations: Tax issues

This paper analyzes the existing asymmetry in the US corporate tax law governing the determination of foreign tax credits earned by US firms with foreign subsidiaries. The existing asymmetry results in the US government de facto holding foreign currency put options against US firms with foreign subsidiaries. Combined with the exchange rate volatility, this tax law asymmetry reduces the effective foreign after-tax rate of return and, thus, makes it profitable for US firms to repatriate their foreign source income earlier even when the foreign after-tax rate of return is higher than the domestic rate. Although this paper identifies this asymmetry in the tax law and analyzes its potential effect on the timing of foreign source income repatriation, it is an open question as to the economic significance of this tax code feature provided the firms’ ability to curry the unused tax credit forward for up to 10 years.     

Simplifying the personal income tax system: lessons from the 1998 Spanish reform

Governments often try to reduce the complexity of personal income tax systems by decreasing the number of tax filings. The 1998 reform of the Spanish income tax system has followed this approach by adjusting withholding on earned income to the income tax liability. In this paper, we assess to what extent the reform has fulfilled its purposes, making use of a micro‐simulation tax‐benefit model for Spain, ESPASIM. The number of individuals exempt from filing a tax return has been reduced to around half of the total number of taxpayers. However, the quantity of tax returns sent to the tax administration has not changed so much because the new withholding system adjusts taxes for only 29 per cent of those exempt. Moreover, the new system increases the overall excess of tax withholding by 1.5 billion euro. We also study alternative reforms that could achieve better results than the one implemented.     

Apply with Caution: Introducing UK‐Style In‐Work Support in Germany*

Estimates of the labour supply effects of recent UK reforms in the area of direct taxes and benefits show that policy can have significant influence on the level of employment. We confirm this in a simulation of an in‐work support system introduced into the German tax and benefit system. Our simulation results suggest that introducing in‐work tax credits in Germany would increase the employment of single individuals by over 105,000 but would result in a reduction of labour supply among individuals living in couples by about 70,000, among both women and men. The result found for men is especially important as it is markedly different from all results for the UK, where the net response among men has always been found to be positive. Our estimation results call for a high degree of caution as far as ‘importing’ UK‐style tax credits to Germany is concerned. In‐work support based on family income would reinforce the existing work disincentives for secondary earners, reducing the employment levels of both men and women living in couples.     

How Much Do Taxes Discourage Incorporation?

The double taxation of corporate income should discourage firms from incorporating. We investigate the extent to which the aggregate allocation of assets and taxable income in the United States between corporate and noncorporate firms responds to the size of this tax distortion during the period 1959–1986. In theory, profitable firms should shift out of the corporate sector when the tax distortion is large, and conversely for firms with tax losses. Our empirical results provide strong support for these forecasts, and imply that the resulting excess burden equals 16 percent of business tax revenue.     

Tax Administration Reform and Taxpayer Compliance in India

This paper evaluates effects on tax compliance of simple reforms in personnel policy in the Indian income tax administration. Taxpayers voluntarily disclosing higher incomes are currently assigned to special assessment units. To avoid this, high income taxpayers have an added incentive to understate their incomes. Empirical evidence consistent with this hypothesis is found. It explains spillover effects of enforcement efforts across assessment units. We incorporate these spillovers in estimating revenue effects of increased support staff. The results imply significant compliance gains would accrue from expanded staff employment and changes in assignment procedures for staff and taxpayers.