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.     

2000～2008年OECD成员国个人所得税变化及对我国的启示

本文通过对2000～2008年OECD成员国个人所得税变化的分析,得出OECD成员国低收入纳税人税负下降、高收入纳税人税负上升,个人所得税最高边际税率普遍下降、税率档次进一步减少、税收累进性提高等结论。借鉴OECD成员国经验并结合我国国情,认为我国个人所得税的功能应定位于调节收入分配,并就如何提高我国个人所得税累进性提出了相关政策建议。     

Income Shifting in the Spanish Dual Income Tax*

Based on a model of behavioural response to taxes, and using the Taxpayers Panel from the Instituto de Estudios Fiscales for the period 1999–2009, we analyse whether the dual nature of the Spanish personal income tax (PIT), reinforced by the 2007 reform, has influenced taxpayers’ behaviour, causing them to convert part of their ‘general income’ (from labour, real estate or economic activities) into ‘savings income’ (from movable capital or capital gains). We also extend the analysis of income shifting and study whether Spanish taxpayers also responded to the different tax treatments given to the two types of savings income (from movable capital and capital gains) until 2007, transforming savings income from one type to the other. The results of our study demonstrate three facts. First, Spanish taxpayers did respond to the different tax rates, shifting income from the general base to different forms of savings, especially capital gains. The highest‐income individuals and the self‐employed and business owners are the groups where this behaviour was most marked. Second, the self‐employed and business owners also turned income from movable assets into capital gains, guided by their different tax rates. And third, we find signs of ‘anticipation’ and ‘learning’ effects caused by the 2007 tax reform. We believe that the results obtained will enrich the growing literature on income shifting.     

Tax compliance in a social setting: The influence of social norms,trust in government,and perceived fairness on taxpayer compliance

Voluntary tax compliance is important for governments around the world as they try to manage budget deficits. Traditional methods to improve tax compliance, such as increased audits, can be costly to implement. The purpose of this study is to examine the influence that social factors have on individuals' tax compliance intentions. Results of a survey of 217 U.S. taxpayers found support for the influence of social factors on tax compliance. This research concludes that social norms influence compliance intentions indirectly through internalization as personal norms. Specifically, as the strength of social norms in favor of tax compliance increases, personal norms of tax compliance also increase, and this leads to a subsequent increase in compliance intentions. We also conclude that trust in government has a significant influence on both perceived fairness of the tax system and compliance decisions. This study adds to current tax research in two important ways. First, the results suggest that the influence of social norms on tax compliance is largely through internalization as personal norms. Second, to the best of our knowledge this is also the first tax compliance study in which perception of fairness is modeled as a function of trust rather than vice-versa. This research may help taxing authorities develop less costly and more effective strategies for increasing taxpayer compliance.     

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.     

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.     

新个人所得税法对扣纳双方的影响及应对——基于扣缴人义务及纳税人行为视角

新个人所得税法在实践中的运行效果取决于征纳双方在税收征管过程中的耦合作用.一方面,作为联系税务机关与纳税人的中介与桥梁,扣缴人在个税预扣预缴及汇算清缴方面发挥着重要作用;另一方面,税制结构变化与缴税申报模式转变对纳税人影响深远.在新个人所得税下,扣缴人的扣缴清缴合规、沟通保密及判定审查等义务均有不同程度的增加、拓展或提...     

Tax Responses at Low Taxable Incomes: Evidence from Germany*

The desirability of a particular tax system depends on how different taxpayers react to it. Exploiting the personal allowance threshold and detailed German tax administration data, this paper examines responses at low taxable incomes to extend previous findings. Taxpayers bunch at the allowance threshold, and more so with non-wage income. Unlike in other studies, wage earners also bunch, at least if they file a tax return, while incomes gross of deductions do not. Deductions account for a sizeable share of the sharp bunching mass of taxpayers with non-wage income. A machine learning analysis identifies which deduction items predict such sharp bunching. The pattern of results suggests that local intensive-margin real responses induce moderate deadweight loss.     

Cost Uncertainty and Taxpayer Compliance

The existence of a private cost borne by audited taxpayers affects the tax enforcement policy. This is so because tax auditors will face now two sources of uncertainty, namely, the typical one associated with taxpayers’ income and that associated with the taxpayers’ idiosyncratic attitude towards tax compliance. Moreover, the inspection policy can be exposed to some randomness from the taxpayers’ viewpoint due to the uncertainty about the audit cost borne by the tax authority. In this paper we provide an unified framework to analyze the effects of all these sources of uncertainty in a model of tax compliance with strategic interaction between auditors and taxpayers. We show that more variance in the distribution of the taxpayers’ private cost of evading raises both tax compliance and the ex-ante welfare of taxpayers. The effects of the uncertainty about the audit cost faced by the tax authority are generally ambiguous. We also discuss the implications of our model for the regressive (or progressive) bias of the effective tax system.     

Deferred Shareholder Taxation – Implementing a Neutral Business Tax in the European Union

This paper proposes the replacement of the corporate income tax by shareholder-based capital income taxation. Our proposal would guarantee investment neutrality of taxation and reduced tax compliance costs. The proposal is based on the S-base cash flow tax. Under the S-base tax, transactions within the corporate sector are not taxable and only transactions between shareholders and corporations are subject to tax. In contrast to existing S-base cash flow tax systems, tax deductibility of investments is deferred. Rather, the acquisition costs and capital endowments are compounded at the capital market rate and are set off against future capital gains. Dividends and withdrawals are fully taxable at the shareholder level. Because of the deferral of the tax payments our proposal is called ‘Deferred Shareholder Tax’ (DST). The DST exhibits the same neutrality properties as the traditional cash flow tax. Moreover, the compounded inter-temporal credit method ensures that it is neutral with respect to the decision between domestic and foreign investment. To increase acceptance of the DST, current taxpayers’ documentation requirements will be reduced rather than extended. Our proposal could be realised in a single EU country or in all member states of the EU.     

Taxpayers' Behavioural Responses and Measures of Tax Compliance ‘Gaps’: A Critique and a New Measure

The work of Feldstein (1995 and 1999) has stimulated substantial conceptual and empirical advances in economists' approaches to analysing taxpayers' behavioural responses to changes in tax rates. Meanwhile, a largely independent literature proposing and applying alternative measures of tax compliance has also developed in recent years, which has sought to provide tax agencies with tools to identify the extent of tax non‐compliance as a first step to designing policies to improve compliance. In this context, measures of ‘tax gaps’ – the difference between actual tax collected and the potential tax collection under full compliance with the tax code – have become the primary measures of tax non‐compliance via (legal) avoidance and/or (illegal) evasion. In this paper, we argue that the tax gap as conventionally defined is conceptually flawed because it fails to incorporate behavioural responses by taxpayers. We show that conventional tax gap measures, which ignore the presence of behavioural responses, exaggerate the degree of non‐compliance. This potentially applies both to indirect taxes (such as the ‘VAT gap’) and direct (income) taxes. Further, where these conventional tax gap measures motivate reforms designed to increase the tax compliance rate, they will likely have a tax‐base‐reducing effect and hence generate a smaller increase in realised tax revenues than would be anticipated from the tax gap estimate.     

Punishing in the public interest: Exploratory Canadian evidence pertaining to convictions and incarcerations for tax offences

Although naming and shaming is a deterrence strategy used by tax authorities, ostensibly to increase tax compliance, the contents of tax conviction notices in which taxpayers are named and shamed have not been investigated in empirical research. To this end, this study uses a sample of 2,570 taxpayers convicted of tax offences by the Canadian tax authority over a ten-year period (2006 through 2015) to identify key characteristics of convictions and incarcerations for tax crimes, and to understand how key conviction characteristics are associated with incarceration. Over this period, findings show that 55% of tax convictions in Canada relate to failure to file tax returns, and that 14% of convicted individuals are incarcerated for an average of 17 months. The mean unreported income per convicted taxpayer is $89,978, the mean unremitted excise tax per convicted taxpayer is $15,330, and the mean fine amount per convicted taxpayer is $48,201. Males are more likely to be convicted of a tax crime than females. Further, professionals are far more likely to be incarcerated than non-professionals. Results also indicate that underreporting related to excise tax as a form of tax evasion is more likely to result in harsher sentencing than underreporting related to income tax. Lastly, we observe a downward trend in convictions and incarceration over the 10-year span, such that the total convictions and incarcerations at the end of the sample period are roughly one-third of the convictions at the beginning. Implications for public policy are discussed.     

An egocentric model of the relations among the opportunity to underreport,social norms,ethical beliefs,and underreporting behavior

A model of the relations among taxpayers’ opportunity, social norms, ethical beliefs, and tax compliance is proposed and tested using structural equation modeling. High opportunity taxpayers, who may personally benefit from evasion, judged evasion as less unethical than low opportunity taxpayers. High and low opportunity taxpayers judged social norms similarly. Further, ethical beliefs partially (fully) mediate the relation between opportunity (social norms) and underreporting. Implications from our study to tax compliance researchers and policy makers are discussed.     

个人所得税专项附加扣除中两个问题的探讨

我国个人所得税2018年改革中,借鉴国际经验,在计算应纳税所得额的扣除项目时首次引入了六项专项附加扣除。由于个人所得税涉及到每个自然人纳税人的切身利益,因此广受社会关注,其中由于复杂家庭关系引起了对于子女教育和赡养老人这两项扣除的热议,本文就与这两项扣除相关的法律问题进行探讨,以期运用法律思维分析纳税人关注的重点难点问题。     

Thinking and Learning in the Tax Evasion Game

Equilibrium behaviour is one of the fundamental concepts of economics: that each player's strategy is a best response to their beliefs about other players' strategies (and that these beliefs are realised). It is therefore striking that one of the most utilised economic models of tax compliance (Allingham and Sandmo, 1972) lacks this property as random audit selection is not a best response for the tax administration. The game theory literature of tax compliance has solved the equilibrium under assumptions of perfect information, full rationality and representative agents (Reinganum and Wilde, 1986; Erard and Feinstein, 1994). The recent application of behavioural economics to tax compliance (Hashimzade et al., 2014) allows richer assumptions such as heterogeneity and asymmetric information to be included in agent‐based models. This paper investigates the tax administration's best‐response audit strategy with heterogeneous taxpayers, imperfect information and evolutionary survival of taxpayers. It finds that, under these conditions, the tax administration's best‐response audit strategy is an adaptive learning approach and not a well‐defined audit function. This fits with actual practice of ‘predictive analytics’ by OECD tax administrations. Behavioural game theory also predicts that when actors are information rich, adaptive learning will dominate abstract thinking.     

The Impact of Inflation on the Aggregate Debt-Asset Ratio

This paper demonstrates that, contrary to the results of previous studies, the impact of inflation on the aggregate debt-asset ratio cannot be determined theoretically. However, it is shown that inflation is likely to increase this ratio when personal income tax schedules are indexed to the price level and/or when leverage-related costs are relatively high and the personal tax rate on income from holding common stocks is relatively low.     

个人所得税改革对居民消费的效应评价与完善路径

当前我国居民消费不足的最主要原因在于居民收入水平不高、国民收入分配失衡,所以2018年个人所得税改革的重点是提高费用扣除标准、调整税率结构,降低纳税人负担,增加纳税人可支配收入,提高居民消费水平。要进一步促进居民消费,个人所得税有必要继续减税,同时进一步调节收入分配差距,使收入分配更加公平。具体对策包括:将专项附加扣除中的子女教育支出范围扩大为子女养育支出,增加家庭合并征税模式,费用扣除标准指数化动态调整,进一步优化税率结构,建立负所得税制度。     

Do personal taxes affect capital structure? Evidence from the 2003 tax cut

Because the personal tax treatments of interest and dividend income likely affect the relative cost of debt and equity financing, a sharp change in tax treatment could affect firms' optimal leverage. This paper examines the effect of the 2003 equity income tax cut on firms' debt usage. Because this tax cut affected only individual investors, we can use a difference-in-differences method to identify the effect of personal tax on firms' leverage. Previous research has found that the 2003 tax cut encouraged dividend payouts and reduced the cost of equity, but it provides no link to equilibrium leverage ratios. We estimate that the tax cut causes the affected firms' leverage to decrease by about 5 percentage points. Furthermore, we show that the effects of the tax cut are stronger for firms with lower marginal corporate tax rates and for firms that are not financially constrained, consistent with our theoretical predictions. Overall, we find strong evidence that personal tax is an important determinant of firms' optimal leverage.     

论纳税人税务信息保护的法理路径

纳税人税务信息与个人信息(个人隐私)概念在逻辑上属于交叉关系,它们之间的共性意味着保护个人隐私或个人信息的法学理论与法律制度,可以直接运用于保护自然纳税人的税务信息;但是,它们之间的差异决定了保护个人隐私、个人信息的法律制度并不能全部、充分地保护纳税人的税务信息,必须建立专门的保护纳税人税务信息的法律制度。为此,可借鉴保护个人信息的做法,以隐私权、一般人格权等理论为基础.建立纳税人税务信息权理论作为我国保护纳税人税务信息的法理路径。