My diploma deals with the effective taxation from the corporate income. The main part of the thesis is aimed on general progress of the effective corporate tax as well as progress of the effective corporate tax in the Czech Republic. Effective corporate tax is a rate, which reflects the real taxation of corporates in particular states. The effective corporate tax arises from the statutory tax rate, which is adjusted by such items, which affect the final taxation. First part of the thesis deals with the options of set up of effective corporate income tax. The second part deals with the tax system in the Czech Republic. The analytic part is aimed on the progress of the effective tax rate. This part is attended by graphs, which show as well as compare the effective corporate income tax rate in particular states.

This thesis is concerned with effective rates of corporate income taxes in EU in 2011. The aim is comparison of effective rates of corporate income taxes in different sectors of particular states - EU members, measured by real effective tax rate. Another aim is comparison real effective rate od EU corporations with implicite corporate tax rates and uncover, whether the level of real effective tax rate and implicite tax rate depends on GDP in % EU-28, inflation, size of the company, research and development costs, or depreciation of machinery and buildings. Differences in real effective tax rate do exist not only in between EU members, but also in different sectors. Values of implicite tax rate in different countries differ in 2011. Analysis results show, that the only mutual factor, which influences value of real effective tax and implicite tax rates is size of the company. When talking about implicite tax rate, dependence on other factors is not approved. Moreover, real effective corporate tax rate is influenced by GDP in % EU-28, as well as research and development costs. Inflation rate and depreciation time of machinery and buildings are factors, that show no connection between both surveyed taxes. Increase relation betwee real and implicite corporate taxes rate is proved.

由相關文獻發現，地主國市場規模、經濟成長率、勞動成本、借貸及租稅成本、地主國幣值、開放程度等為影響外人投資的因素。本研究除了對這些因素進行實證研究外，尤其針對租稅因素作深入探討，以邊際有效稅率做為衡量投資決策時的租稅負擔，分析台灣的租稅獎勵政策對外人來台直接投資的影響；主要利用經濟部投資審議委員會核准通過之外國人投資資料，觀察期間為1971~2006年，以迴歸方程式分析外人來台直接投資之整體、三大來源國以及四大產業的決定因素。 由研究發現：不論就整體投資、不同來源國及產業別的FDI流入而言，我國市場規模確實為吸引外人直接投資流入的重要因素。就租稅因素的分析結果而言，台灣的邊際有效稅率對於美國、電子電器製造業、批發及零售業以及金融產業的FDI流入有顯著的負向關係，表示若台灣租稅獎勵政策越豐富、外資適用稅率越低，皆可吸引FDI流入。新台幣兌美元匯率則為批發及零售業投資台灣的重要決定因素，若新台幣貶值，則其投資金額將增加，表示在台批發及零售業者的外銷型態多以台灣出貨為主。最後，本研究亦發現政黨輪替對於整體來台外人直接投資與歐洲地區國家FDI流入有顯著的正向關係。 關鍵詞：租稅獎勵、外人直接投資(FDI)、邊際有效稅率。

This diploma thesis explores effective tax rates of personal income tax in the European Union. It analyzes the tax policy of newer and older EU member states in relation to personal income tax and social security. Structural elements of this tax play an important role in taxation of natural persons and differ vastly in individual states of the EU. The discrepations among the taxation rates can cause serious problems in the functioning of the single market of the EU. The EU aims to coordinate and harmonize the direct taxes, which would remove the obstacles to the single market functioning. The taxation of natural persons shows apparent mutual differences among the states -- not just regarding rates of this particular tax -- resulting from cultural customs. These differences do not, so far, enable the approximation of individual states in natural persons' taxation and create space for possible tax competition.

O objetivo desta tese foi avaliar os efeitos decorrentes do registro de instrumentos financeiros híbridos junto às linhas patrimoniais. Para tanto, foram utilizados modelos de relevância informacional, os quais avaliam a forma como os números contábeis são assimilados pelos preços e retornos acionários (OHLSON, 1995; ABOODY et al., 1999; LIMA, 2010; LOPES; WALKER, 2012). Adicionalmente, também foram observadas as inter-relações entre a emissão e a contabilização de tais contratos com o custo de capital próprio, alavancagem financeira e a carga tributária efetiva, respectivamente, considerados como determinantes para utilização dessa modalidade de captação de recursos (LEE; FIGLEWICZ, 1999). No tocante ao desenvolvimento metodológico desta pesquisa, foram compostos dois conjuntos amostrais, sendo: (i) grupo de interesse, formando por 39 empresas que emitiram os instrumentos híbridos aqui estudados, presentes em 10 jurisdições; e (ii) grupo de controle, no qual se encontram 107 organizações domiciliadas nos mesmos países e setores, bem como de composição patrimonial similar ao grupo previamente relatado. Foram coletadas observações para essas companhias de dezembro de 2005 a dezembro de 2015, em bases trimestrais, perfazendo um total de 3.386 observações. A leitura das notas explicativas do grupo de interesse indicou que essas empresas registraram os híbridos junto ao PL, considerando elementos interpretativos minimamente questionáveis à luz da essência econômica sobre a forma jurídica desses títulos. Isto é, sob uma análise conjugada dos instrumentos híbridos aqui avaliados com a IAS 32, é possível inferir que a modalidade de contratos analisada se aproxima mais da definição de passivo financeiro do que de instrumento patrimonial. Entretanto, no âmbito dos resultados quantitativos, verificou-se, em linhas gerais, que os modelos de relevância informacional indicam que o montante dos híbridos afeta os preços e retornos acionários dos emitentes não relacionados a projetos de infraestrutura, de maneira positiva e estaticamente significante. Tal contrariedade pode ser mais bem compreendida aplicando-se o conceito da profecia autorrealizável de Merton (1968), em que o registro contábil de um título como PL, ainda que de maneira equivocada, desencadeará nos agentes de mercado a percepção de que esse de fato possui tal condição, adotando comportamentos que fazem com que a concepção originalmente falsa se torne verdadeira. Do mesmo modo, a ausência de questionamentos por parte dos auditores externos e dos reguladores corroboraria o tratamento empregado pelas organizações, gerando os efeitos descritos nos investidores. Com relação aos fatores determinantes para emissão desses títulos, foi verificado que os emitentes possuem custo de capital próprio superior, são mais alavancados financeiramente e demonstraram cargas tributárias efetivas inferiores aos não emitentes. Dessa maneira, é possível concluir que embora novas modalidades de contratos para obtenções de valores, tais como os instrumentos híbridos, sejam importantes para o financiamento das atividades empresarias, é fundamental que a contabilidade represente de forma fidedigna a natureza econômica desses instrumentos, a fim de que não haja distorções na posição patrimonial das entidades e, por conseguinte, gere vieses nos usuários das demonstrações financeiras / The main purpose of this thesis was to evaluate the effects of hybrid financial instruments bookkeeping as equity. Therefore, were used value relevance econometrics models, which assess how the accounting figures are assimilated by the stock prices and stock returns (OHLSON, 1995; Aboody et al., 1999; LIMA, 2010; LOPES; Walker, 2012). Additionally, were observed the relationships between these contracts and cost of capital, financial leverage and effective tax rate, respectively, considered crucial to use of this fundraising tool (LEE; FIGLEWICZ, 1999). Regarding to the methodological development of this research was composed two samples, namely: (i) interest group, formed by 39 companies that issued hybrid instruments presents in 10 different jurisdictions; and (ii) control group, which have 107 organizations domiciled in the same countries and operating in the same sectors, as well as its equity composition is similar to the interest group. Observations were collected for these firms from December 2005 to December 2015, on a quarterly basis, forming a total database with 3.386 observations. The technical notes of the interest group analysis indicated that these firms recorded hybrids as equity instruments, considering interpretative elements at least questionable in light of the economic substance over the legal form of these bonds. Therefore, in a combined analysis of hybrid instruments evaluating IAS 32 together, it is possible to infer that these contracts is closer to the concept of financial liability than equity instrument definition. However, under the quantitative finds, it was verified that the amount of hybrid affects the prices and stock returns of issuers, not related to infrastructure projects, in a positive and statistically significant way. Such results opposition might be better understood applying the concept of self-fulfilling prophecy of Merton (1968), in which the accounting records of a contract such as equity, albeit wrongly, will trigger on the market players the insight that this truly or it has such condition, adopting behaviors that make the original false conception becomes true. Similarly, the absence of queries by regulators and auditors corroborate the treatment employed by the firms, supporting the effects described on the investors. Concerning to the determinant factors for the issuance of these bonds, was found that the issuers have higher cost of capital, are more leveraged and revealed lower effective taxes rates than non-issuers. Hence, can be concluded that while new forms of contracts for obtaining resources, such as hybrids, are important for the financing of entrepreneurial activities, it is essential that accounting represent faithfully the economic nature of these instruments in order to not create distortions in the financial position and, therefore, generate biases in users of financial statements.

影響公司資本結構的理論大體可區分為由租稅、稅盾和破產成本間的互抵關係（trade-off）、由經理人、債權人、以及股東間因利益衝突所引發的代理成本（agency cost）、以及融資順位理論（pecking order theory）等觀點來討論。其中，租稅因素包括有效稅率、以及投資抵減、租稅損失遞延等非負債性稅盾因素。而另一方面，影響有效稅率的因素則包含了公司的資本結構、公司規模、盈餘變動、各項租稅優惠等因素。很明顯的，資本結構與有效稅率兩者間有互為因果、以及聯立的關係存在。但在過去的研究中卻均未考慮到此點，目前的文獻或只論及有效稅率對資本結構之影響，或是資本結構對有效稅率之影響，均為單一方向的考慮，忽略了兩者之間相互影響的關係，因此所得之實證結果也必然有所偏誤。 因此，本文以一全新、與以往不同的聯立方程系統，而非尋舊有兩條分立之模型的方式，就實證結果來分析效稅率與資本結構之間真正的關係，並同時以橫斷面、及Panel Data之固定效果模型來進行迴歸分析。其主要結論為：我國公司之有效稅率與資本結構只存在負相關之結果，當有效稅率愈高（低），公司之舉債愈低（高），也就是說，利息費用所帶來的租稅節餘利益並不影響我國上市上櫃公司之資本結構。此結果不僅與理論不符，也與國內之前之實證研究結果相異。本文推論，這可能與投資抵減所帶來的所得效果、以及股票市場之之蓬勃發展有關。 另外，本文亦針對台灣資本市場以及稅制環境之特色，納入台灣目前停徵證券交易所得稅及土地交易所得稅之因素。實證結果顯示，免稅之證券交易所得與資本結構為負相關，反映出了台灣近幾年股票市場交易熱絡，以及公司以此作為其財務融資來源的特色，租稅因素對於公司融資行為之影響由此可見。這對於租稅中立的追求來說，並不是一個令人樂見之結果。

新企業所得稅法實施後，內外資企業所得稅法被統一，不一致的情形被消弭，稅收優惠的政策也從對外資企業的普遍優惠制轉變成以產業為導向。凡此種種改變，皆對中國大陸上市企業之有效稅率產生影響。本文以2003年-2010年中國大陸上市企業的財務資料做實證研究。 本文主要研究的課題有三：一、探討新企業所得稅法實施前後稅前扣除規定對有效稅率的影響；二、新企業所得稅法中規定的反資本弱化條款對企業有效稅率是否有影響？；三、內外資企業所得稅兩稅合一之後，各地區是否仍有顯著的稅境差異？ 第一個課題用兩個變數來捕捉，一個是薪資費用，一個是營運費用。薪資費用在內外資企業所得稅兩稅合一前與有效稅率為負相關。本文推論該情形因為高階管理人員的薪資沒有正常列報，而可能的原因有三：一、租稅規劃原因，二、避免薪酬過高引起社會各界關注，故分配在各個關係企業，三、國家對國有企業的高階管理人薪資有限制。 營運費用在內外資企業所得稅兩稅合一前與有效稅率為正相關，與假說預計情況相同。這部分可用財稅差異的觀點來解釋。而內外資企業所得稅兩稅合一之後，應納稅所得額的計算規則更為公平合理，故營運費用對有效稅率的影響為負相關。第二個課題是討論資本弱化條款的問題。內外資企業所得稅兩稅合一之後，該變數之係數呈現顯著正相關，代表中國大陸在內外資企業所得稅兩稅合一之後，反避稅措施的實施已然有些成效。 第三個課題是稅境差異的問題。本文地區性虛擬變數的設置以西部地區為對照組。內外資企業所得稅兩稅合一之前，較明顯享受稅收優惠政策的地區是西部地區與經濟特區，故東部地區與中部地區的係數顯著為正，而經濟地區呈現不顯著的狀態。內外資企業所得稅兩稅合一之後，地區別的稅收優惠政策只剩下西部地區中的鼓勵類產業才能享受，而實證結果也明確顯示中國大陸政府預期的結果。 / After new enterprise income tax law enacted , income tax law applicable to both domestic and foreign-owned enterprise are unified,the difference between those income tax law are gone. The new law scraps the original emphasis on regional incentives in favor of industry-oriented incentives supplemented by regional ones . All of these changes affect corporate effective tax rates of China Listed companies . This study used the sample of china listed companies spanning from 2003-2010. This study have three main topics : First, to discuss how the pre-tax deduction rules affect corporate effective tax rates before and after implementation of the new law. Second, does the anti-thin capitalization rule in the new law have some effect to corporate effective tax rates? Third, after implementation of the new law,are there still big difference between regions? This study used two variables to examine first topic-salary expense and operating expense. Salary expense had a negative correlation with corporate effective tax rates before implementation of the new law. I consider it came from salary information disclosure of senior executives which could be explained in three ways. First, tax planning purpose. Second, in case of drawing attention from publics, part of salary were paid by affiliated companys. Third,the country imposed caps on senior executive pay in state-owned enterprises. Operating expense had a positive relation with corporate effective tax rates before implementation of the new law which is the same as hypothesis. It could be explained in terms of book-tax differences. After implementation of the new law, rules for computation taxable income are more fair and reasonable. As a result, operating expense has a negative relation with corporate effective tax rates. The second topic discuss about anti-thin capitalization rule.After implementation of the new law, the variable standing for anti-thin capitalization rule is significantly positively correlated with corporate effective tax rates.It represents that, after implementation of the new law, China authorities make progress in anti-tax avoidance. The third topic is about tax burden between regions. This study used western region as a control group. Before implementation of the new law, preferential tax policies were subject to western region and Special Economic Zones. For this reason, the region dummy variables—central China and east China were significantly positively correlated with corporate effective tax rates, but the coefficient of western region dummy variable did not reach statistical significance. After implemention of the new law, preferential tax policies is subject only to domestic enterprises belonging to the category encouraged by the State in western region. The empirical results conform to the anticipation of China authorities.

中國大陸自1994年採用生產型增值稅後，重複課稅阻礙了產業結構的發展，使企業成長受到抑制，故2009年轉型為消費型增值稅，雖已有學者針對法治層面進行研究，然而尚無文獻針對增值稅轉型對於增值稅實質稅負之影響進行實證研究。本研究初以產業結構、股權結構與地區結構之差異探討對於中國大陸為轉型消費型增值稅後對於實質稅率產生之影響，並輔以企業規模、銷貨毛利率、股東權益報酬率、資本資產密集度……等變數的控制，期以降低對主要測量變數之影響。 實證結果發現: （1）中國大陸上市公司之有效稅率在增值稅體系中享有租稅優惠而使實際繳納之有效稅率降低，2009年後實施消費型增值稅，其實質稅率亦從4.79％降至4.02％，顯見實施後的實質稅率確能降低租稅負擔。（2）資本密集度較高之產業，其實質稅率亦較高，2009增值稅轉型後，無論是資本密集度高之產業抑或資本密集度低之產業，其實質稅率之影響並不顯著，顯見此次轉型因增值稅與營業稅並存而無法真正體現消費型增值稅所帶來稅負公平性。（3）內資持股比例超過50％之上市公司（內資企業）經過此次轉型後其實質稅率並未下降，顯見此次轉型並非全面而使成效有限。（4）中部和西部地區相較於東部地區之實質稅率較高，在2009年轉型為消費型增值稅後有降低之趨勢。 / This study investigates the effect of the effective tax rate after china began the transition from production-type valued-added tax to consumption-type VAT. Some researchers explore the pros and cons from the institutional level, but it is rarely to analyze the impact of the effective tax rate when the authorized implemented the consumption valued-added tax. This paper analyzes the effect of the effective tax rate on the transformation of valued-added tax by means of the empirical study. The empirical findings indicate that: 1) The effective tax rate of china listed companies declined from 4.79% to 4.02% after the transition of the VAT(Valued-added Tax),Therefore, the transition of the valued-added tax can decrease the burden of tax. 2) This study divided industries into capital intensive industries with high and low indicates it is not obvious in the regression. Because valued-added tax and business tax co-exist which results in the lack of fairness in consumption-type VAT. 3) The listed companies whose proportion of domestic ownership is above 50%(defined as domestic enterprises)increase rather than decrease effective tax rate after transition of VAT in 2009. 4) The listed companies which belong to area with middle and western region have decreasing tendency toward effective tax rate after transition of VAT in 2009.

Traditionally, some countries have been using the Corporate Income Tax as a way of, starting from relatively high nominal tax rates, encourage certain economic activities through incentives or bonuses that allow considerably reduce actual business taxation. In contrast, other member states have chosen to directly lower the tax rate, regardless of other incentives, thus bringing the nominal taxation to effective.This research aims to analyze the discrepancies in the taxation of corporate income tax between different Eurozone countries for the period 2000-2013, noting the differences between the statutory (STR) and effective tax rates (ETR) of listed companies. In this way, this work locates the idea of the European Commission to adopt a common corporate tax in its current context, determining which countries exercise greater fiscal pressure on the results of their companies. / Tradicionalmente, algunos países han utilizado el impuesto sobre los beneficios empresariales como una vía para, partiendo de unos tipos relativamente elevados, fomentar determinadas actividades mediante incentivos o bonificaciones fiscales que permitirían reducir considerablemente esta carga fiscal empresarial. En cambio, otros Estados han optado por reducir directamente la tasa de impuestos, sin tener en cuenta los incentivos fiscales, acercando la tributación nominal a la efectiva.Esta investigación pretende analizar las divergencias existentes en la tributación por el impuesto sobre sociedades entre los distintos países de la eurozona para el período 2000-2013, observando las diferencias entre los tipos nominales y efectivos de las empresas cotizadas. De esta manera, se sitúa en el contexto actual la idea de la Comisión Europea debe adoptar un impuesto de sociedades común, y determinar qué países ejercen una mayor presión fiscal sobre los resultados de sus empresas. / Tradicionalmente, alguns países com uma elevada taxa nominal utilizam o imposto sobre a renda como uma via para fomentar as atividades econômicas através de incentivos ou bônus que permite reduzir consideravelmente a atual tributação das empresas. Em contrapartida, outros Estados-Membros optaram para diretamente baixar as taxas de impostos, independentemente de outros incentivos, transformando a taxa nominal em efetiva.Esta pesquisa tem como objetivo analisar as discrepâncias na tributação empresarial entre os diferentes países da zona do euro no período 2000-2013, observando as diferenças entre a taxa nominal e a taxa de imposto efetiva das empresas listadas. Desta forma, este trabalho projeta a noção de que a Comissão Europeia adopte um regime comum para o imposto sobre o rendimento, determinando quais são os países que exercem uma maior carga tributária sobre os resultados de suas empresas.

O objetivo desta tese foi avaliar os efeitos decorrentes do registro de instrumentos financeiros híbridos junto às linhas patrimoniais. Para tanto, foram utilizados modelos de relevância informacional, os quais avaliam a forma como os números contábeis são assimilados pelos preços e retornos acionários (OHLSON, 1995; ABOODY et al., 1999; LIMA, 2010; LOPES; WALKER, 2012). Adicionalmente, também foram observadas as inter-relações entre a emissão e a contabilização de tais contratos com o custo de capital próprio, alavancagem financeira e a carga tributária efetiva, respectivamente, considerados como determinantes para utilização dessa modalidade de captação de recursos (LEE; FIGLEWICZ, 1999). No tocante ao desenvolvimento metodológico desta pesquisa, foram compostos dois conjuntos amostrais, sendo: (i) grupo de interesse, formando por 39 empresas que emitiram os instrumentos híbridos aqui estudados, presentes em 10 jurisdições; e (ii) grupo de controle, no qual se encontram 107 organizações domiciliadas nos mesmos países e setores, bem como de composição patrimonial similar ao grupo previamente relatado. Foram coletadas observações para essas companhias de dezembro de 2005 a dezembro de 2015, em bases trimestrais, perfazendo um total de 3.386 observações. A leitura das notas explicativas do grupo de interesse indicou que essas empresas registraram os híbridos junto ao PL, considerando elementos interpretativos minimamente questionáveis à luz da essência econômica sobre a forma jurídica desses títulos. Isto é, sob uma análise conjugada dos instrumentos híbridos aqui avaliados com a IAS 32, é possível inferir que a modalidade de contratos analisada se aproxima mais da definição de passivo financeiro do que de instrumento patrimonial. Entretanto, no âmbito dos resultados quantitativos, verificou-se, em linhas gerais, que os modelos de relevância informacional indicam que o montante dos híbridos afeta os preços e retornos acionários dos emitentes não relacionados a projetos de infraestrutura, de maneira positiva e estaticamente significante. Tal contrariedade pode ser mais bem compreendida aplicando-se o conceito da profecia autorrealizável de Merton (1968), em que o registro contábil de um título como PL, ainda que de maneira equivocada, desencadeará nos agentes de mercado a percepção de que esse de fato possui tal condição, adotando comportamentos que fazem com que a concepção originalmente falsa se torne verdadeira. Do mesmo modo, a ausência de questionamentos por parte dos auditores externos e dos reguladores corroboraria o tratamento empregado pelas organizações, gerando os efeitos descritos nos investidores. Com relação aos fatores determinantes para emissão desses títulos, foi verificado que os emitentes possuem custo de capital próprio superior, são mais alavancados financeiramente e demonstraram cargas tributárias efetivas inferiores aos não emitentes. Dessa maneira, é possível concluir que embora novas modalidades de contratos para obtenções de valores, tais como os instrumentos híbridos, sejam importantes para o financiamento das atividades empresarias, é fundamental que a contabilidade represente de forma fidedigna a natureza econômica desses instrumentos, a fim de que não haja distorções na posição patrimonial das entidades e, por conseguinte, gere vieses nos usuários das demonstrações financeiras / The main purpose of this thesis was to evaluate the effects of hybrid financial instruments bookkeeping as equity. Therefore, were used value relevance econometrics models, which assess how the accounting figures are assimilated by the stock prices and stock returns (OHLSON, 1995; Aboody et al., 1999; LIMA, 2010; LOPES; Walker, 2012). Additionally, were observed the relationships between these contracts and cost of capital, financial leverage and effective tax rate, respectively, considered crucial to use of this fundraising tool (LEE; FIGLEWICZ, 1999). Regarding to the methodological development of this research was composed two samples, namely: (i) interest group, formed by 39 companies that issued hybrid instruments presents in 10 different jurisdictions; and (ii) control group, which have 107 organizations domiciled in the same countries and operating in the same sectors, as well as its equity composition is similar to the interest group. Observations were collected for these firms from December 2005 to December 2015, on a quarterly basis, forming a total database with 3.386 observations. The technical notes of the interest group analysis indicated that these firms recorded hybrids as equity instruments, considering interpretative elements at least questionable in light of the economic substance over the legal form of these bonds. Therefore, in a combined analysis of hybrid instruments evaluating IAS 32 together, it is possible to infer that these contracts is closer to the concept of financial liability than equity instrument definition. However, under the quantitative finds, it was verified that the amount of hybrid affects the prices and stock returns of issuers, not related to infrastructure projects, in a positive and statistically significant way. Such results opposition might be better understood applying the concept of self-fulfilling prophecy of Merton (1968), in which the accounting records of a contract such as equity, albeit wrongly, will trigger on the market players the insight that this truly or it has such condition, adopting behaviors that make the original false conception becomes true. Similarly, the absence of queries by regulators and auditors corroborate the treatment employed by the firms, supporting the effects described on the investors. Concerning to the determinant factors for the issuance of these bonds, was found that the issuers have higher cost of capital, are more leveraged and revealed lower effective taxes rates than non-issuers. Hence, can be concluded that while new forms of contracts for obtaining resources, such as hybrids, are important for the financing of entrepreneurial activities, it is essential that accounting represent faithfully the economic nature of these instruments in order to not create distortions in the financial position and, therefore, generate biases in users of financial statements.