The Master's thesis is concerned with optimizing the tax costs and tax expenditures of sole proprietor or legal entity businesses. Main objective of this thesis is to introduce the tax cost and tax expenditures, which can be optimized, as widely as possible and to analyze the most important methods of tax optimalization relevant to most business entities. To achieve this objective the thesis is divided into theoretical and practical part. The theoretical part is focused on a definition of tax, tax system of the Czech republic including more detailed descriptions of income taxes and value added tax, effects of taxation on an enterprise and reasons for tax optimalization related to it and last but not least the thin line between tax avoidance and tax evasion. The practical part introduces through verbal description and practical examples the most important methods of tax optimalization relevant to most business entities, i.e. income tax and value added tax. Finally the thesis deals with international tax planning and methods of cash flow management connected with tax administration.

The Master's thesis is focused on tax optimalization through tax havens. The Master's thesis is divided into six parts. The first part generally outlines the problems of international tax optimalization. The next one defines concepts related to tax havens, use of tax havens and the fight against tax evasion. The third chapter concentrates on direct foreign investments, which are connected with holding companies. Information from this chapter is used in the following chapters. The practical part consists of two and shows the costs for establishment of a model subsidiary and the tax costs of the company for the first year of its running in chosen tax havens. These costs together with other information about chosen tax havens are analysed. Subsequently, a suitable location for the company in one of these destinations is suggested.

The diploma thesis focused on international tax planning and tax optimization. The diploma thesis specifies what is an international tax planning and underlines its importance in these days. On theoretical knowlege the diploma thesis summarizes key factors that should entrepreneurs in international tax planning and optimization to take into account. End of the thesis presents proposal the progress of the process of international tax planning and also on the particular case.

The master´s thesis is focused on the characteristic of tax havens and their possible utilization. On the basis of the literature in the theoretical part there are described the basic assumptions of international tax planning, agreements for the avoidance of double taxation and tax havens. Analytical part describes selected tax havens. The practical part of the thesis deals with the possibilities of tax optimalization through the utilization of tax havens.

The master thesis deals with the issue of taxation in selected tax havens. The thesis first outlines the characteristics of particular tax havens and the basic concepts related to this issue. Afterwards, selected tax havens, their tax system and companies that can be cre-ated there are analysed. Subsequently, on a model example are outlined advantages of taxation in selected tax haven.

Master thesis deals with tax havens and their utilization. In the teoretical part are defined fundaments of the tax havens and their utilization. Next part of thesis is analysis of tax havens in the Middle East. In this part focus is on coutries like Bahrain, Qatar or United Arab Emirates. Based of founded facts are concluded recommendations for concrete company with aim to reduce taxation.

O fenômeno da globalização teve o condão de aproximar os diversos povos, cada um com seus interesses e culturas próprios. A existência de um consenso internacional na definição de princípios a serem seguidos quando das relações externas não consegue impedir, contudo, o surgimento de possíveis conflitos e divergências, tendo em vista a pluralidade cultural das diversas nações mundiais, fato que induziu a sociedade internacional a desenvolver meios que pudessem dirimir pacificamente as controvérsias, porventura, surgidas entre elas. A adoção dos meios para solução pacífica dos conflitos internacionais encontra-se incentivada pela Constituição da República Federativa do Brasil (art. 4., incisos VI e VII) e sua utilização não importa qualquer renúncia ao exercício da soberania, nem tampouco à imunidade de jurisdição. Para que se tenha uma eficácia maior da submissão dos conflitos surgidos no âmbito externo aos meios admitidos para resolvê-los, é importante que os países envolvidos no litígio possuam orientação interna no sentido de privilegiar o Direito Internacional frente à sua legislação infraconstitucional doméstica. A eventual primazia do direito interno pode resultar na inocuidade da adoção dos meios pacíficos de solução de controvérsias internacionais, uma vez que as autoridades dos países litigantes poderão se esquivar do cumprimento do acordo ou decisão alegando uma possível contrariedade com os ditames legais domésticos. Nesse contexto, a seara tributária tem despertado constantes divergências internacionais. As diferentes interpretações conferidas pelas diversas nações, dentre elas o Brasil, quando da aplicação dos tratados por elas firmados e que tenham vertente fiscal, em especial aqueles que visam evitar a dupla imposição fiscal da renda, ou garantir o livre trânsito de bens, pessoas e serviços, acaba trazendo grande insegurança àqueles investidores que possuem operações conectadas a dois ou mais sistemas tributários diferentes. Assim, ganham cada vez mais corpo, os debates em torno da extensão dos mecanismos pacíficos para resolução de divergências, também ao âmbito de aplicação de todo e qualquer tratado que verse sobre a matéria tributária. Tal fato propicia a busca de uma possível uniformização dos métodos hermenêuticos aplicáveis àqueles fatos geradores tributáveis que se encontrem vinculados a dois ou mais entes soberanos. É nesse contexto que se apresenta o presente estudo, o qual aborda a possibilidade de a República Federativa do Brasil submeter ao procedimento arbitral aquelas controvérsias de cunho tributário que eventualmente decorram da interpretação divergente das convenções internacionais das quais seja parte e que tratem de matéria fiscal. / The phenomenon of globalization had the power to bring together different peoples, each with their own interests and cultures. However, in view of the cultural diversity of different peoples around the world, the existence of an international consensus in establishing the principles to be followed when external relations are formed cannot prevent the emergence of external conflicts and disagreements. This led the international society to develop mechanisms that could peacefully settle the controversies that may eventually arise. The adoption of such mechanisms is encouraged by the Brazilian Constitution, whose article 4, sections VI and VII, advocates the pursuit of peace and peaceful settlement of disputes. Its use does not lead to the renunciation of the exercise of sovereignty nor to the immunity of jurisdiction. Meanwhile, in order to achieve greater efficacy in the submission of disputes arising outside of the means allowed to solve them, it is important that countries involved in the disputes have consolidated internal orientation towards favouring international law over their domestic infra-constitutional legislation. The primacy of the domestic law may result in the ineffectiveness of adopting peaceful means for solving international controversies since authorities of the countries engaged in the dispute may avoid compliance with the agreement or decision on the grounds of some contradiction with the domestic law procedures. In this context, the taxation arena has been constantly attracting international disagreement. The different interpretations conferred by various nations, including Brazil, in applying taxation-related treaties signed by themselves, particularly those attempting to avoid double income taxation or to guarantee the free flow of goods, people and services, bring a high level of insecurity to investors possessing operations connected to two or more distinct tax systems. As a result, the debates regarding the extension of the peaceful mechanisms to the solution of divergences take shape, including those related to the application of any treaty which speaks to the subject of taxation. This favors the search for the standardization of the hermeneutical methods applicable to those tax events which are linked to two or more sovereign entities. This is the context surrounding the current study, which addresses the possibility of the Federative Republic of Brazil to refer tax-related disputes, caused by divergent interpretation of the international conventions of which it is a member, to the arbitral proceedings.

O fenômeno da globalização teve o condão de aproximar os diversos povos, cada um com seus interesses e culturas próprios. A existência de um consenso internacional na definição de princípios a serem seguidos quando das relações externas não consegue impedir, contudo, o surgimento de possíveis conflitos e divergências, tendo em vista a pluralidade cultural das diversas nações mundiais, fato que induziu a sociedade internacional a desenvolver meios que pudessem dirimir pacificamente as controvérsias, porventura, surgidas entre elas. A adoção dos meios para solução pacífica dos conflitos internacionais encontra-se incentivada pela Constituição da República Federativa do Brasil (art. 4., incisos VI e VII) e sua utilização não importa qualquer renúncia ao exercício da soberania, nem tampouco à imunidade de jurisdição. Para que se tenha uma eficácia maior da submissão dos conflitos surgidos no âmbito externo aos meios admitidos para resolvê-los, é importante que os países envolvidos no litígio possuam orientação interna no sentido de privilegiar o Direito Internacional frente à sua legislação infraconstitucional doméstica. A eventual primazia do direito interno pode resultar na inocuidade da adoção dos meios pacíficos de solução de controvérsias internacionais, uma vez que as autoridades dos países litigantes poderão se esquivar do cumprimento do acordo ou decisão alegando uma possível contrariedade com os ditames legais domésticos. Nesse contexto, a seara tributária tem despertado constantes divergências internacionais. As diferentes interpretações conferidas pelas diversas nações, dentre elas o Brasil, quando da aplicação dos tratados por elas firmados e que tenham vertente fiscal, em especial aqueles que visam evitar a dupla imposição fiscal da renda, ou garantir o livre trânsito de bens, pessoas e serviços, acaba trazendo grande insegurança àqueles investidores que possuem operações conectadas a dois ou mais sistemas tributários diferentes. Assim, ganham cada vez mais corpo, os debates em torno da extensão dos mecanismos pacíficos para resolução de divergências, também ao âmbito de aplicação de todo e qualquer tratado que verse sobre a matéria tributária. Tal fato propicia a busca de uma possível uniformização dos métodos hermenêuticos aplicáveis àqueles fatos geradores tributáveis que se encontrem vinculados a dois ou mais entes soberanos. É nesse contexto que se apresenta o presente estudo, o qual aborda a possibilidade de a República Federativa do Brasil submeter ao procedimento arbitral aquelas controvérsias de cunho tributário que eventualmente decorram da interpretação divergente das convenções internacionais das quais seja parte e que tratem de matéria fiscal. / The phenomenon of globalization had the power to bring together different peoples, each with their own interests and cultures. However, in view of the cultural diversity of different peoples around the world, the existence of an international consensus in establishing the principles to be followed when external relations are formed cannot prevent the emergence of external conflicts and disagreements. This led the international society to develop mechanisms that could peacefully settle the controversies that may eventually arise. The adoption of such mechanisms is encouraged by the Brazilian Constitution, whose article 4, sections VI and VII, advocates the pursuit of peace and peaceful settlement of disputes. Its use does not lead to the renunciation of the exercise of sovereignty nor to the immunity of jurisdiction. Meanwhile, in order to achieve greater efficacy in the submission of disputes arising outside of the means allowed to solve them, it is important that countries involved in the disputes have consolidated internal orientation towards favouring international law over their domestic infra-constitutional legislation. The primacy of the domestic law may result in the ineffectiveness of adopting peaceful means for solving international controversies since authorities of the countries engaged in the dispute may avoid compliance with the agreement or decision on the grounds of some contradiction with the domestic law procedures. In this context, the taxation arena has been constantly attracting international disagreement. The different interpretations conferred by various nations, including Brazil, in applying taxation-related treaties signed by themselves, particularly those attempting to avoid double income taxation or to guarantee the free flow of goods, people and services, bring a high level of insecurity to investors possessing operations connected to two or more distinct tax systems. As a result, the debates regarding the extension of the peaceful mechanisms to the solution of divergences take shape, including those related to the application of any treaty which speaks to the subject of taxation. This favors the search for the standardization of the hermeneutical methods applicable to those tax events which are linked to two or more sovereign entities. This is the context surrounding the current study, which addresses the possibility of the Federative Republic of Brazil to refer tax-related disputes, caused by divergent interpretation of the international conventions of which it is a member, to the arbitral proceedings.

Avec la mondialisation, les groupes de sociétés ont multiplié les transactions internationales et, de fait, les phénomènes d'optimisation fiscale internationale. La nécessité de fixer des prix de transfert « objectifs » afin de permettre une juste répartition de la manne fiscale entre les États s'est très vite imposée. La remise en cause des prix de transfert conduit à une double imposition économique.Aujourd'hui, le principe de pleine concurrence est la norme internationale utilisée comme norme de référence pour la fixation de prix de transfert « objectifs ». Toutefois, cette norme est perfectible. Aussi, la communauté internationale cherche et expérimente des alternatives à la norme du prix du marché. Dès lors, les réglementations étatiques et internationales sont amenées à repenser la problématique des prix de transfert dans sa dimension économique et non plus dans un but exclusivement fiscal.L'évolution majeure de ces dernières années est la nouvelle approche de la relation administration fiscale/entreprise. L'entreprise doit fixer ses prix de transfert en accord avec l'administration pour réduire le risque de double imposition économique. Le souci d'assurer une juste répartition des recettes fiscales entre les États et de garantir la sécurité juridique au développement du commerce mondial, constituent les défis de demain. / As a result of globalization, multinational companies have increased their international transactions, and in consequence, international tax planning. The need to determine "objective" transfer pricing in order to ensure the fair allocation of tax revenue between States quickly became a global necessity. However, the readjustment of transfer pricing as carried out by tax administrations leads to double taxation.At present, the arm's length principle is the international standard used as a reference norm to determine "objective" transfer pricing. However, this standard is perfectible and so the international community has been looking for and trying out alternatives to the norm of arm's length pricing. Consequently, both domestic and international rules and regulations need to be reassessed with regard to the problems of transfer pricing so that transfer pricing issues can be addressed not only from the perspective of tax revenue but also taking into account their overall economic dimension.The major evolution over last few years is the new approach to the tax administration/company relationship. The company must determine its transfer pricing in agreement with the tax administration in order to reduce the risk of economic double taxation. This aims to make sure that a fair share of income tax is apportioned between States and also guarantees a secure legal framework for the future allowing international trade to continue to develop and rise to meet the challenges that lie ahead.

Le terme de « prix de transfert » désigne le prix des transactions conclues entre les filiales d’une même entreprise multinationale. La thèse traite, sous un angle essentiellement normatif, de la problématique de réglementation de ces prix, c'est-à-dire de la détermination du mode de partage optimal du profit d’un groupe entre ses filiales. La thèse s’attache tout d’abord à montrer l’effet de la réglementation des prix de transfert sur les décisions de production et d’investissement des entreprises, puis sur le bien-être mondial. Sur la base des résultats obtenus, les objectifs qu’un dictateur bienveillant international devrait assigner à ce type de réglementation sont ensuite établis. Ce double travail permet de tracer le contour d’un projet de réglementation optimale, fondé sur le concept d’équité inter-nations, et dont l’application conduirait à attribuer à chaque filiale sa valeur de Shapley dans un jeu préalablement défini. La thèse éclaire également le débat contemporain en proposant un protocole permettant de comparer le principe de pleine concurrence avec la méthode d’allocation forfaitaire. / The prices of the transactions set between subsidiaries of a multinational corporation are usually called « transfer prices ». The dissertation deals with the normative questions raised by the regulation of such prices, particularly the optimal way of distributing the profit of a multinational between its subsidiaries. The dissertation first shows how the transfer prices regulation can influence corporate production and investment decisions, thereby impacting worldwide welfare. Based upon these results, the objectives that an international benevolent dictator would pursue through such a regulation are then identified. This program allows for the sketching of an optimal transfer prices regulation, which relies strongly upon the inter-nation equity concept, and which application would grant each subsidiary its Shapley value in a certain game. The dissertation also makes a contribution to the current debate by proposing a protocol to compare the arm’s length principle with the formulary apportionment method.