近年來各國跨國企業利用對外投資控股架構設計進行租稅規劃，複雜的跨國結構安排導致各國稅基嚴重被侵蝕，引起各界關注，故了解跨國公司如何規劃其投資控股架構有其必要性。基於國內尚未有實證文獻探究國際租稅規劃對我國跨國公司投資控股架構決策之影響，因此本文針對2010年至2014年台灣上市櫃公司之海外關係企業目前投資控股架構進行研究，以了解我國對外投資的投資控股架構設計概況。此外，本文進一步探究跨國公司為了進行國際租稅規劃，不同租稅屬性的上下層公司是否確實會有相對應租稅特性之公司搭配形成控股連結。 本文建構兩個迴歸模型，採用Tobit模型進行實證分析。模型一分析基本租稅因素對於跨國控股連結之影響，實證結果顯示跨國控股連結設計會受到租稅協定、上下層公司所在國稅率差距影響。而模型二檢視國家組合間之租稅搭配相關變數對跨國控股連結的影響。結果顯示，上下層公司所在國的租稅環境確實會影響與其形成控股連結之所在國家的區位選擇。 / In the recent years, multinational corporations using the design of investment holding structure to do the tax planning. The complicated investment holding structure result in the tax base being damaged, and it draws the attentions of all walks of life. Therefore, there’s necessity to understand how the multinational corporations plan their investment holding structure. Due to the fact that there’s no literature which research the influence of international tax planning to our country’s multinational corporation investment holding structure decision have been proved. In order to understand how Taiwan’s multinational corporations plan their investment holding structure, we do the research against the investment holding structure of Taiwan’s listed companies from 2010 to 2014. Besides, we do the research more advanced on the international tax planning to see whether there will be companies with corresponded different tax characteristic that form an ownership links with the upper and lower companies of different tax characteristic. In this paper, we constructed two regression models, the Tobit random effect model is used to do the empirical analysis. The Model 1 analyzes the relation between the basic tax variable and the cross-border ownership links. The results indicate that the design of cross-border ownership links will be affected by tax treaty and the difference of tax rate between the upper and the lower countries. And the Model 2 examines the relation between tax collocation of country pair variables and cross-border ownership links. We found out that the tax environment where the upper and lower companies are located has truly affect the location choice of the country which the ownership link is linked to.

Les Etats membres de l'Union européenne, sont soumis à un certain nombre d'obligations résultant de leur adhésion à l'Union européenne. Ils sont notamment obligés de se conformer au droit de l'Union européenne. Dans le même temps, ces Etats ont conclus un certain nombre de conventions internationales dans différents domaines avec d'autres Etats, notamment des conventions fiscales, dans le cadre de l'élimination des doubles impositions et de la lutte contre l'évasion et la fraude fiscale internationale. L'application de ces conventions fiscales par les Etats membres de l'Union européenne, de manière simultanée avec leurs obligations au regard du droit de l'Union européenne vont engendrer des conflits de normes. Ces conflits de normes surviendront notamment du fait, de certaines incompatibilités des conventions fiscales au regard du droit de l'Union européenne. Par conséquent, les Etats membres de l'Union européenne seront dans l'incapacité de pouvoir honorer simultanément leurs obligations à l'égard de ces deux normes, car du fait de ces incompatibilités, il est impossible de les appliquer simultanément. L'Etat membre ne pourra appliquer qu'une seule de ces normes, ce qui entraînera de ce fait, une violation de l'autre norme, et potentiellement engagera la responsabilité de l'Etat membre. Il s'agit par conséquent de déterminer quels sont ces conflits de normes entre conventions fiscales et Traité sur le fonctionnement de l'Union européenne et comment ils peuvent être résolus. L'étude du droit de l'Union européenne au travers du Traité sur le fonctionnement de l'Union européenne, montre que son apport à la résolution des conflits de normes est très limité. En outre, l'étude du droit international notamment au travers de la Convention de Vienne de 1969 sur le droit des traités, nous montre que son apport à la résolution des conflits de normes est assez inefficace.Ainsi, les solutions traditionnellement présentées dans le cadre de la résolution des conflits de normes apparaissent fort désuètes au regard de la complexité et de l'évolution des conflits de normes contemporains.Par conséquent, on essaie d'apporter à travers cette étude un certains nombres de solutions innovantes pouvant résoudre ces conflits de normes, d'une part dans un cadre général et d'autre part dans des cadres spécifiques. / Members States of the European Union are subject to a number of obligations arising from their accession to the European Union. They are especially obliged to comply with the law of the European Union. At the same time, these States have concluded a number of international conventions in different fields with other states, including tax treaties, through the elimination of double taxation and the fight against tax avoidance and international tax evasion. The application of these treaties by members States of the European Union, simultaneously with their obligations under the law of the European Union will lead to conflicts of norms. These conflicts of norms occur especially because of some incompatibilities tax treaties under the law of the European Union. Therefore, members States of the European Union will not be able to be able to meet their obligations with respect to these two norms as a result of these inconsistencies simultaneously, it is impossible to apply simultaneously. The Member State may apply one of these norms, resulting thus a violation of other norms, and potentially be the responsibility of the Member State. It is therefore to determine what these normative conflicts between tax treaties and the Treaty on the Functioning of the European Union and how they can be solved are. The study of the law of the European Union through the Treaty on the Functioning of the European Union shows that its contribution to conflict resolution of norms is very limited. In addition, the study of international law, particularly through the 1969 Vienna Convention on the Law of Treaties, shows that its contribution to conflict resolution of norms is quite inefficient.Thus, the solutions traditionally presented in the context of conflict resolution of norms appear very outdated in terms of the complexity and evolution of conflicts of contemporary norms.Therefore, we try to bring through this study a certain number of innovative solutions to solve these conflicting norms, first in a general framework and the other in specific settings.

Made available in DSpace on 2016-04-26T20:29:54Z (GMT). No. of bitstreams: 1 Alessandra de Souza Okuma.pdf: 2067533 bytes, checksum: fb2d17d87e735a3f03a1c33e12624ab6 (MD5) Previous issue date: 2009-10-09 / The purpose of this paper is the analysis of anti-avoidance rules in the Brazilian law, as well as these provided by international treaties executed by Brasil, regarding the corporate income tax. Our opinion on the extension of the general anti-avoidance provision contained in domestic law is based on the following premises: (i) the theory of autopoietic systems by Niklas Luhmann; (ii) tax principles; (iii) concepts of civil Law on fraud, simulation and abuse. It reveals that the general anti-avoidance rule provided by Brazilian law should be applied exclusively in order to disregard transactions without a legal cause or structures presenting incompatibilities between form and substance, underling a tax avoidance purpose and lacking of a business rationale. We will define the extension of specific anti-avoidance rules contained in Brazilian law, namely: special tax regime for transactions involving residents in tax haven jurisdictions; transfer pricing and CFC legislation. We will point out situations which these provisions might possibly conflict with the benefits granted by a tax treaty executed by Brazil. Each case, we should suggest criteria and legal basis for interpretation of these rules, towards resolving conflicts, considering the pacta sunt servanda principle and domestic Brazilian rules. Notwithstanding, we will analyse anti-avoidance provisions contained in the tax treaties, in view of OECD s statements regarding the improper use of the treaties amended in 2003, suggesting an interpretation in accordance with the Vienna Convention for reconciling these provisions with the domestic rules provided by the Brazilian law system / O objeto deste trabalho é a análise das normas anti-elusivas veiculadas por leis brasileiras e pelas Convenções Internacionais para evitar a dupla tributação ( CIT ), no que concerne ao imposto sobre a renda da pessoa jurídica. Partiremos da teoria dos sistemas de Luhmann, dos princípios constitucionais tributários e das normas de direito privado para construir a norma geral anti-elusiva doméstica, tal como delineada pelo art. 116, parágrafo único do CTN. Demonstraremos que a aplicação dessa norma deve considerar critérios discriminantes precisos e adequados para distinguir elisão, elusão e evasão fiscal, quais sejam: a presença da causa jurídica e a compatibilidade da estrutura negocial. Utilizaremos estas premissas para construir o conteúdo de cada norma anti-elusiva específica com efeito internacional veiculada pelas leis brasileiras, notadamente: o regime fiscal especial para uso de países de tributação favorecida; o controle de preços de transferência e o regime de transparência fiscal internacional. Apontaremos situações que hipoteticamente podem representar conflitos entre as normas anti-elusivas específicas e o regime tributário veiculado pelas CITs celebradas pelo Brasil. Para cada caso, indicaremos uma proposta hermenêutica adequada para, quando possível, conjugar esta normas domésticas, com as normas internacionais, observando o princípio pacta sunt servanda e o art. 98 do Código Tributário Nacional. Interpretaremos também as normas anti-elusivas eivadas de fonte internacional, de acordo com o método de interpretação próprio das normas internacionais previsto na Convenção de Viena e construiremos seu conteúdo de forma compatível com o sistema jurídico brasileiro

本研究旨在探討我國最新建立之反資本弱化稅制對跨國集團整體稅負之影響，並欲指出跨國公司在未來租稅規劃上應注意之事項。透過對國內外資本弱化相關案例，以及其他實務上可能產生稀釋資本議題之操作模式做個案研究，希望能夠發現在此稅制之下可能存在之問題與風險。 本文共分為五章，概述如下： 第一章：說明本研究之研究動機、欲探討之問題、擬採用之研究方法以及本研究架構。 第二章：分別針對資本弱化之理論架構、相關稅收議題，以及各國反資本弱化稅制之國內外文獻進行回顧及探討。 第三章：介紹並整理我國反資本弱化稅制中之各類法條、辦法及函令。 第四章：案例研究，以虛擬案例及實務上產生爭議之個案為研究對象，俾對我國未來稅捐稽徵機關在稽徵實務上及納稅義務人在租稅規劃上提出建議。 第五章：就前述討論內容做出結論，並嘗試對我國反資本弱化稅制提出具體之建議，以期做為未來研究者之參考。 / This essay focused on the newly enacted anti-thin capitalization regulation in Taiwan and its possible impact on multinational corporations in tax aspect. By studying on cases related to thin capitalization and other possible issues, this essay would like to discover the potential drawbacks and risks in the anti-thin capitalization regulation. This essay comprises five chapters. Summarizes as follows: Chapter 1: To explain motives, structure and methodologies of this research. Chapter 2: First, to introduce the definition of thin-capitalization made by OECD, and to explain the Modigliani-Miller Theory, which was the rationale of Thin Capitalization. Secondly, to collect and analyze the possible tax issues of thin capitalization, and to introduce the legislative conditions of anti-thin capitalization in regulations in main countries. Chapter 3: To briefly introduce the newly enacted anti-thin capitalization regulation. Also, this essay would like to debate on main issues and potential drawbacks in this regulation. Chapter 4: To study on an assumed example and other cases that show the common model of thin-capitalization and possible impacts result from anti-thin capitalization regulation on multinational corporations. In this part, the essay would like to give some suggestions to tax authority and tax payers. Chapter 5: To summarize the main contents from the forenamed chapters, in addition, to cite the potential risks and shortcomings of the anti-thin capitalization regulation.

Den svenska CFC-lagstiftningens förenlighet med internationella åtaganden i form av skatteavtal baserade på OECD:s modellavtal har varit ett omdiskuterat ämne inom svensk lagstiftning under mer än ett decennium. Tvistigheten kring CFC-lagstiftningens förenlighet med skatteavtal förekommer också i andra medlemsstater av OECD. Den svenska CFC-lagstiftningen tillämpas sedan 1 januari 2004. Rättsföljden av lagstiftningen framgår av 39 a kap. 13 § IL. Syftet med CFC-lagstiftningen är att förhindra en erosion av den svenska skattebasen. Utan CFC-lagstiftning skulle en skattebetalare kunna etablera företag i lågbeskattde jurisdiktioner enbart i syfte att minska den totala skattebördan. Genom att tillämpa CFC-lagstiftningen beskattas en delägare löpande för sitt innehav i den utländska juridiska personen. Enligt förarbeten är CFC-lagstiftningen förenlig med de svenska skatteavtalen. Lagstiftaren lägger stor vikt vid ordalydelsen i kommentarerna till OECD:s modellavtal. OECD rekommenderar medlemsstaterna att tillämpa lagstiftningen. Uppsatsen visar att CFC-lagstiftningen är förenlig med skatteavtal baserade på OECD:s modellavtal. Syftet med skatteavtal är att förhindra juridisk dubbelbeskattning. CFC-lagstiftningen ger upphov till ekonomisk dubbelbeskattning. Diskussionen gällande CFC-lagstiftningens förenlighet med skatteavtal beror på kommentarernas rättsliga verkan samt därtill framställda anmärkningar. / The Swedish CFC legislation and its compatibility with international commitments in form of tax treaties based on OECD Model have been disputed in the Swedish legislation for more than a decade. Whether CFC legislation is compatible with tax treaties is also disputed in many other Member States of the OECD. The Swedish controlled foreign company legislation entered into force on 1 January 2004. The legal effect of the legislation is covered in chapter 39 a, section 10 of the Swedish Income Tax Act. The basic purpose of CFC legislation is to prevent an erosion of the Swedish tax basis. Without CFC regulations a taxpayer would be free to establish companies in low-tax jurisdictions for the sole purpose of reducing the overall tax burden. By applying the legislation a Swedish resident shareholder will be taxed on all the income that is attributed from a foreign subsidiary, regardless of when the income is distributed. In the preparatory works the government argues that the CFC legislation is compatible with Sweden’s tax treaties, based on OECD Model. The government’s opinion is mostly based on the statement in the Commentary to the OECD Model. The legislation is recommended by the OECD. This thesis concludes that the CFC legislation is compatible with tax treaties based on the OECD Model. The purpose with tax treaties is to avoid juridical double taxation. The CFC-legislation gives rise to economic double taxation. Therefore the legislation can be justified. The discussion of the CFC legislation compatible with tax treaties depends of the relevance of the Commentary but also on observations given to the Commentaries.

<p>Den svenska CFC-lagstiftningens förenlighet med internationella åtaganden i form av skatteavtal baserade på OECD:s modellavtal har varit ett omdiskuterat ämne inom svensk lagstiftning under mer än ett decennium. Tvistigheten kring CFC-lagstiftningens förenlighet med skatteavtal förekommer också i andra medlemsstater av OECD.</p><p>Den svenska CFC-lagstiftningen tillämpas sedan 1 januari 2004. Rättsföljden av lagstiftningen framgår av 39 a kap. 13 § IL. Syftet med CFC-lagstiftningen är att förhindra en erosion av den svenska skattebasen. Utan CFC-lagstiftning skulle en skattebetalare kunna etablera företag i lågbeskattde jurisdiktioner enbart i syfte att minska den totala skattebördan. Genom att tillämpa CFC-lagstiftningen beskattas en delägare löpande för sitt innehav i den utländska juridiska personen.</p><p>Enligt förarbeten är CFC-lagstiftningen förenlig med de svenska skatteavtalen. Lagstiftaren lägger stor vikt vid ordalydelsen i kommentarerna till OECD:s modellavtal. OECD rekommenderar medlemsstaterna att tillämpa lagstiftningen.</p><p>Uppsatsen visar att CFC-lagstiftningen är förenlig med skatteavtal baserade på OECD:s modellavtal. Syftet med skatteavtal är att förhindra juridisk dubbelbeskattning. CFC-lagstiftningen ger upphov till ekonomisk dubbelbeskattning. Diskussionen gällande CFC-lagstiftningens förenlighet med skatteavtal beror på kommentarernas rättsliga verkan samt därtill framställda anmärkningar.</p> / <p>The Swedish CFC legislation and its compatibility with international commitments in form of tax treaties based on OECD Model have been disputed in the Swedish legislation for more than a decade. Whether CFC legislation is compatible with tax treaties is also disputed in many other Member States of the OECD.</p><p>The Swedish controlled foreign company legislation entered into force on 1 January 2004. The legal effect of the legislation is covered in chapter 39 a, section 10 of the Swedish Income Tax Act. The basic purpose of CFC legislation is to prevent an erosion of the Swedish tax basis. Without CFC regulations a taxpayer would be free to establish companies in low-tax jurisdictions for the sole purpose of reducing the overall tax burden. By applying the legislation a Swedish resident shareholder will be taxed on all the income that is attributed from a foreign subsidiary, regardless of when the income is distributed.</p><p>In the preparatory works the government argues that the CFC legislation is compatible with Sweden’s tax treaties, based on OECD Model. The government’s opinion is mostly based on the statement in the Commentary to the OECD Model. The legislation is recommended by the OECD.</p><p>This thesis concludes that the CFC legislation is compatible with tax treaties based on the OECD Model. The purpose with tax treaties is to avoid juridical double taxation. The CFC-legislation gives rise to economic double taxation. Therefore the legislation can be justified. The discussion of the CFC legislation compatible with tax treaties depends of the relevance of the Commentary but also on observations given to the Commentaries.</p>

This paper outlines the core issues of the introduction of a new PE nexus based on digital presence. It puts forward its essential features and rethinks the foundations of the concept of sourcing for income tax purposes in the global economy. Our proposal of a new PE nexus based on digital presence is also supported by a theoretical reconstruction in the light of a new dimension for the benefit theory. Our work directly relates to Action 1 of the OECD/G20 BEPS Project. However, the development of a new PE nexus is in fact not an instrument to counter BEPS, but reflects a structural revision of the criteria for allocating taxing rights on cross-border business income in the era of the digital economy. This paper should be understood as a discussion paper and first proposal to shed further light on (i) whether there is a theoretical justification for a new PE nexus based on digital presence, (ii) how a new PE nexus based on digital presence could be defined and (iii) whether and how potential implementation issues could be resolved. By publishing the present blueprints for a new PE nexus, the authors wish to provoke a more concrete discussion on this particularly important matter. (authors' abstract) / Series: WU International Taxation Research Paper Series

Many multinational firms, notably Apple Inc., have engaged in increasingly aggressive tax planning strategies which shift billions of dollars overseas. This paper examines the problem through a case study of Apple, concluding that while many loopholes are utilized, aggressive transfer pricing of intangible assets is the root of the problem. Several solutions are examined before concluding that the best solution is a partial elimination of deferral in the form of a minimum payout share.

Pour identifier des limites internationales de la liberté de l’État en matière fiscale, il convient d’étudier non seulement sa compétence fiscale — envers qui il peut exercer le pouvoir fiscal — mais aussi son pouvoir fiscal — ce qu’il peut faire dans l’exercice de ce pouvoir. Ces éléments sont éclaircis à travers l’analyse de la pratique étatique et de la jurisprudence internationale. La compétence fiscale de l’État ne repose pas sur une habilitation par l’ordre juridique international, mais doit être appréhendée sous le prisme des deux faces de l’État : personne publique et sujet de droit international. D’une part, les États disposent d’un pouvoir fiscal originaire de leur constitution comme personnes publiques souveraines. D’une autre part, en tant que sujets de droit international, ils peuvent se reconnaître des droits et des obligations subjectifs, et donc aménager l’exercice de leurs pouvoirs fiscaux par la détermination des sphères de leurs compétences par la conclusion d’engagements interétatiques. En dehors de cette hypothèse, les critères de rattachement fiscal sont des représentations d’une relation entre l’État et le sujet ou l’objet de l’impôt selon l’appréciation de l’État normateur, et non pas des règles certaines de compétence internationale.La liberté de l’État de déterminer le contenu de son pouvoir fiscal est encadrée de manière rudimentaire par le droit international. Cet encadrement implique essentiellement l’inopposabilité des normes fiscales d’effet extraterritorial et l’interdiction de réalisation d’opérations matérielles en territoire étranger. Pour autant, parce qu’il est souverain, l’État peut consentir à des limitations de son pouvoir fiscal dans le cadre de la coopération ou l’intégration internationale, sans que le titre de son pouvoir ne soit contesté. / In order to determine the international limits of State freedom in tax matters, one should take into account not only thescope of the power to tax (i.e. the competence to tax), but also its content, in relation to the exercise of the power to tax.Therefore, jurisdiction to tax is a twofold concept: it entails a competence to tax — with regard to whom a State may exerciseits power to tax — and a power to tax — what a State may do while exercising this power. Its analysis is based on Statepractice and international case law.Competence to tax is not based on an empowerment by international law. Its analysis has to be guided by the idea thatStates have two facets: they are public persons and at the same time international law subjects. First, the creation ofStates as sovereign public persons marks the origin of their jurisdiction to tax. Secondly, as international law subjects, Statesmay recognize rights and assume obligations. Thus, they can adjust the exercise of their power to tax by establishing theirscope through double taxation conventions. In all other cases, tax nexus criteria do not constitute certain rules ofjurisdiction, but merely depict the way States conceive their relationship with a tax subject or object.International law restrictions to the exercise of the power to tax are minor. Indeed, these restrictions mainly entail theunenforceability of tax rules with extraterritorial effect and the prohibition of material acts of enforcement on foreignterritory. Therefore, as sovereign subjects, States are free to allow restrictions to their powers through internationalcooperation and integration. Such restrictions do not challenge the foundations of their power to tax.

Submitted by Morgana Silva (morgana_linhares@yahoo.com.br) on 2016-09-13T16:56:08Z No. of bitstreams: 1 arquivototal.pdf: 2227911 bytes, checksum: 2235d971a0dbc124711517cf57d7a9d7 (MD5) / Made available in DSpace on 2016-09-13T16:56:08Z (GMT). No. of bitstreams: 1 arquivototal.pdf: 2227911 bytes, checksum: 2235d971a0dbc124711517cf57d7a9d7 (MD5) Previous issue date: 2016-05-05 / This master’s thesis has as its theme the aggressive tax planning of multinational companies, through the use of technical differences between different legal systems (hybrid mismatch arrangements). The perspective adopted will be entirely new, by submitting an understandable canon of international tax law, which is the social adequacy of tax. This proposed solution is intended to harmonize the principle of legality and tipicity, with fairness and tax education. It is, above all, a legal system response to formal crisis that hit in tax matters, especially about the unfair distribution of the tax burden arising from aggressive tax planning of multinationals, both foreign and Brazilian. This type of taxpayer behavior generates a number of negative effects on the human right to development, especially in the global financial crisis times. However, this does not mean that this work disregards the importance of formalism of the tax law, which is a legal area of expertise that values certainty and security. The central issue is the popular growth of a sense of injustice that needs to be properly considered. At this point, it appears that the pure positivist model does not have a structure to take care of the dangers resulting from the expansion of globalization and the speed with which everything happens in the XXI century. There is also the great influence of globalization, which makes markets operate in a dynamic way and complex than ever observed. Thus, it can be stated that the justification for the construction of this text is precisely the importance of the fight against the base erosion and profit shifting (BEPS): taking into account that all rights have a financial cost as less resources are available for national governments, the most affected are the public policies. That said, I must highlight the difficulties of trying to harmonize the social adequacy of a broad discussion that permeates the relationship between tax law and justice. Even today, this relationship between law and morality is still a field without a definitive answer. And if Hans Kelsen is correct, this may be an academic challenge for which there is no final answer. Maybe just ask a little better. In this line, it should be noted, as wisely emphasized Castanheira Neves, which is given to men who speak and take risks, the right to make mistakes. We will talk and therefore accept the risk. / Essa dissertação de mestrado tem como tema o planejamento tributário agressivo de companhias multinacionais, através do aproveitamento de disparidades técnicas entre diferentes ordenamentos jurídicos (hybrid mismatch arrangements). O viés adotado será inteiramente novo, na forma da apresentação de um cânone compreensivo para o direito tributário internacional, que é a adequação social tributária. Essa proposta de solução visa harmonizar o princípio da legalidade e tipicidade, com a igualdade tributária e a educação fiscal. Trata-se, antes de qualquer coisa, de uma resposta do ordenamento jurídico à crise formalista que se abate sobre o campo dos tributos, mormente diante da injusta divisão da carga tributária decorrente do planejamento agressivo de multinacionais, tanto estrangeiras quanto brasileiras. Esse tipo de comportamento do contribuinte gera uma série de efeitos negativos sobre o direito humano ao desenvolvimento, notadamente em tempos de crise financeira mundial. Entretanto, isso não significa que este trabalho esteja desconsiderando a importância do formalismo para o direito tributário, que é uma área do conhecimento jurídico onde se valoriza muito a certeza e a segurança. A questão central é que cresce na população um sentimento de injustiça que precisa ser devidamente considerado. Nesse momento, parece que o modelo positivista puro não dispõe de estrutura para cuidar dos perigos advindos da expansão da globalização e da velocidade com que tudo acontece no século XXI. Também é posto na balança a globalização que faz com que os mercados operem em uma dinâmica e complexidade nunca antes vista. Dessa forma, pode-se afirmar que a justificativa da construção deste texto está justamente na importância da luta contra a erosão das bases tributáveis dos Estados (BEPS): tendo em conta que todos os direitos possuem um custo financeiro, quanto menor forem os recursos à disposição dos governos nacionais, mais prejudicadas estarão as políticas públicas. Dito isto, necessário ressaltar as dificuldades dessa tentativa de harmonização pela adequação social, em uma discussão ampla que perpassa as relações entre direito tributário e justiça. Até hoje esta relação entre direito e moralidade ainda é um campo sem uma resposta definitiva. E se Hans Kelsen estiver correto, pode não ser um desafio acadêmico ao qual se possa encontrar uma resposta final. Talvez apenas perguntar um tanto melhor. Nessa linha, há de se reconhecer, como sabiamente o pediu Castanheira Neves, que seja concedido aos homens que falam e arriscam, o direito ao próprio erro. Falaremos e, portanto, admitimos o risco.