In the standard case in which the interest rate is assumed to be greater than the rate of population growth, implementation of a social security program leads to a reduction in capital formation and a loss of welfare of the representative individual. This dissertation asks whether the parameters of a stylized social security program can be manipulated to reduce this welfare loss. By attaching weights to the earnings used in computing the average monthly earnings, an instrument is created which the social security administrator can use to manipulate the net marginal tax rates and the relative cost of leisure between years. If, as a result, aggregate savings increase, then steady-state welfare may also increase. The effect of changing the weights in the benefit formula is considered first in a simple three-period partial equilibrium model. Individuals work for two periods and are retired in the third. It is shown, under assumptions of separability, that first-period labor supply must go up and second-period labor supply must go down in response to an increase in the earnings weight attached to the first period. Furthermore, although there is an element of ambiguity, a strong case can be made that aggregate savings must increase. It is also shown that, contrary to intuition, a zero net tax is not neutral and in fact must lead to a reduction in capital formation and welfare. These same issues are then considered in a many-period model in which interest rates and wage rates are allowed to respond to changes in aggregate savings. It is found that alternatives to the current program that provide more weight to earnings of younger workers can reduce the welfare loss by a small amount. Because of the intractability of the many-periods case a computer simulation is used to perform the analysis. In addition, the adjustment costs of a public savings program are considered. (Feldstein, among others, has suggested that social security be used as a vehicle for a public savings program to increase private investment in the economy.) It is shown that while such a program would adversely affect that welfare of a number of generations, these welfare losses are quite small: less than 0.05% for all the cases considered. / Ph. D.

L’épidémie de tabagisme est responsable de la mort de millions de personnes et malgré cela, la consommation mondiale de produits du tabac ne cesse d’augmenter. La majorité des fumeurs vivent aujourd’hui dans les pays à revenu faible et intermédiaire, et les maladies non-transmissibles liées au tabac représentent un important fardeau pour ces systèmes de santé. L’Amérique du Sud n’y échappe pas et un fait très préoccupant est certainement la prévalence élevée chez les adolescents de cette région. La présente étude visait à évaluer l’effet du prix des cigarettes et de l’exposition à la publicité en faveur du tabac sur le tabagisme des adolescents d’Amérique du Sud, et ce à partir des données du Global Youth Tobacco Survey. Les niveaux d’exposition à la publicité et les prix auto-déclarés ont été utilisés pour modéliser ces relations, et les comportements tabagiques étudiés étaient l’expérimentation, la participation et la consommation. L’échantillon total comprenait 134 073 répondants provenant de 12 pays. Les résultats de l’étude ont montré que l’exposition à la publicité en faveur du tabac avait un effet positif sur le tabagisme des adolescents, mais contrairement au consensus établi dans la littérature, la relation négative entre le prix des cigarettes et le tabagisme n’a pas été observée de façon convaincante. Des lacunes inhérentes à la base de données utilisée pourraient expliquer ces résultats inattendus, et certains éléments méthodologiques du sondage sont remis en question. / The tobacco epidemic is responsible for the death of millions of people, and despite this fact the consumption of tobacco products is increasing globally. The majority of smokers now live in low-and middle-income countries, and non-communicable diseases linked to tobacco represent an important burden for these health systems. Such is the case for South American countries, and high smoking prevalence among teenagers of this region is also worrying. This study, based on Global Youth Tobacco Survey data, has examined the impact of cigarette prices and exposure to tobacco advertising on smoking among South American adolescents. Self-reported prices and levels of exposure to advertising have been used to model the relationships, and the smoking behaviors studied were experimentation, participation and consumption. The total survey sample included 134, 073 respondents from 12 countries. The results showed that exposure to tobacco advertising had a positive impact on smoking among adolescents. Although there is a clear consensus in the literature about the negative relationship between cigarette prices and smoking, it could not be demonstrated strongly in this study. Problems inherent to the database may explain these unexpected results and some methodological aspects are questioned.

Qualquer sociedade deve decidir como serão repartidas as despesas comuns e isso tem ocorrido há milhares de anos. A partir de elementos próprios do movimento da Law and Economics, esta tese elabora uma proposta científica sobre a questão. Trata-se da democracia fiscal. Parte-se da constatação de que o direito e a economia se influenciam mutuamente numa dinâmica de constantes e infindáveis estímulos e feedbacks recíprocos, o que impede a observação da prevalência de um destes fenômenos sociais sobre o outro. Na democracia fiscal, há três fundamentos que interagem como um sistema de pesos e contrapesos, de modo que um influencie e seja influenciado pelos demais em um desejável equilíbrio. São eles: a liberdade material, a igualdade de sacrifícios e a não inibição, pelo Estado, da atividade econômica. A liberdade material se consubstancia no respeito aos direitos fundamentais da propriedade (em sentido amplo) e da livre iniciativa, cujo exercício permite ao indivíduo decidir como melhor satisfazer suas necessidades e desejos, não se submetendo, por conseguinte, aos desígnios estatais ou à caridade alheia. A igualdade de sacrifícios se revela na necessidade de que a perda de bem-estar causada pelo pagamento dos tributos seja igualmente repartida entre todos os cidadãos, o que se obtém pela aplicação dos princípios da capacidade contributiva, progressividade e pessoalidade, de maneira que a arrecadação se origine, o máximo possível, dos tributos diretos pagos pelas pessoas físicas (sobre a renda, as propriedades e as transmissões de bens em geral). É que os tributos indiretos, além daqueles pagos pelas empresas, de um modo geral, conferem caráter regressivo ao sistema de tributação. A não inibição da atividade econômica permite o incremento da arrecadação, uma vez que as exações, em geral, incidem sobre fatos e atos de cunho econômico. Assim, com mais recursos, o Estado pode melhor se desincumbir de suas missões constitucionais. Logo, a tributação não pode ser desmedida a ponto de gerar distorções mercadologias ou, pior, estimular que os contribuintes abandonem o sistema legal e passem a operar, sempre que possível, na informalidade, sendo certo que em tais hipóteses o Tesouro Público é prejudicado. / Any society must decide how the common expenses will be shared and this has happened for thousands of years. From elements of the own movement of Law and Economics, this thesis formulates a scientific proposition about this theme. Its the fiscal democracy. Starting from the basic assumption that the Law and the Economics influence each other in a dynamic of constant and no-ending stimulus and reciprocal feedbacks, this prevents the observation of the prevalence of one of these social phenomena over the other. On the fiscal democracy, there are three substances that interact like a system of checks and balances so that one influence and be influenced by the others in a likewise balance. They are: material freedom, equality of sacrifices and the non-inhibition, by the State, of the economic activity. The material freedom is about the respect to the basic rights of property (in ample sense) and free initiative, whose exercise allows to the individual decide how to better satisfy their needs and desires, not submitting themselves, wherefore, to the wills of the State and charity. The equality of sacrifices reveals itself in the needing that the loss of welfare due to the tax payment to be equally shared amongst all citizens thats obtained by applying the principles of contributive capacity, progressivity and personality in order that the origin of tax, the maximum possible, is that from the direct taxes paid by the natural persons (over the income, property and goods trades in general). Its that the indirect taxes, besides those paid by companies, usually give an indirect regressive quality to the Tax System. The non-inhibition of the economic activity allows the increase of the tax payment, once the taxes, in general, occur over economics facts and acts. This way, with more resources, State can better attain to the constitutional missions. Therefore, taxing cannot be in a way to create market distortions or, worse, stimulate that the contributors abandon the legal system and start working, always when possible, on the informality, because, in those cases, the Public Treasure is the one aggrieved.

Made available in DSpace on 2016-04-26T20:48:45Z (GMT). No. of bitstreams: 1 Lavinia Moraes de Almeida N Junqueira.pdf: 3001685 bytes, checksum: 628e93636718e357f3154237bd212210 (MD5) Previous issue date: 2006-06-06 / In light of ideal tax principles, this study computes and analyses the cumulative taxation of goods and services in Brazil from 2003 to 2005. Computes and analyses the effective tax rates on households´ consumption and wages as per ranges of total income. The study provides thereby a practical view of Brazilian taxation during this period, allowing further international comparative studies as well as the assessment of opportunities for tax reform / O trabalho calcula e analisa, à luz dos princípios ideais de tributação, a incidência em cascata de tributos sobre bens e serviços no Brasil de 2003 a 2005. Calcula e analisa também a alíquota efetiva de tributação das famílias brasileiras, incidente sobre o valor de bens e serviços consumidos e sobre os salários por faixa de renda. Traz assim um panorama prático da tributação no período estudado, permitindo comparação internacional e identificação de oportunidades de Reforma Tributária

Qualquer sociedade deve decidir como serão repartidas as despesas comuns e isso tem ocorrido há milhares de anos. A partir de elementos próprios do movimento da Law and Economics, esta tese elabora uma proposta científica sobre a questão. Trata-se da democracia fiscal. Parte-se da constatação de que o direito e a economia se influenciam mutuamente numa dinâmica de constantes e infindáveis estímulos e feedbacks recíprocos, o que impede a observação da prevalência de um destes fenômenos sociais sobre o outro. Na democracia fiscal, há três fundamentos que interagem como um sistema de pesos e contrapesos, de modo que um influencie e seja influenciado pelos demais em um desejável equilíbrio. São eles: a liberdade material, a igualdade de sacrifícios e a não inibição, pelo Estado, da atividade econômica. A liberdade material se consubstancia no respeito aos direitos fundamentais da propriedade (em sentido amplo) e da livre iniciativa, cujo exercício permite ao indivíduo decidir como melhor satisfazer suas necessidades e desejos, não se submetendo, por conseguinte, aos desígnios estatais ou à caridade alheia. A igualdade de sacrifícios se revela na necessidade de que a perda de bem-estar causada pelo pagamento dos tributos seja igualmente repartida entre todos os cidadãos, o que se obtém pela aplicação dos princípios da capacidade contributiva, progressividade e pessoalidade, de maneira que a arrecadação se origine, o máximo possível, dos tributos diretos pagos pelas pessoas físicas (sobre a renda, as propriedades e as transmissões de bens em geral). É que os tributos indiretos, além daqueles pagos pelas empresas, de um modo geral, conferem caráter regressivo ao sistema de tributação. A não inibição da atividade econômica permite o incremento da arrecadação, uma vez que as exações, em geral, incidem sobre fatos e atos de cunho econômico. Assim, com mais recursos, o Estado pode melhor se desincumbir de suas missões constitucionais. Logo, a tributação não pode ser desmedida a ponto de gerar distorções mercadologias ou, pior, estimular que os contribuintes abandonem o sistema legal e passem a operar, sempre que possível, na informalidade, sendo certo que em tais hipóteses o Tesouro Público é prejudicado. / Any society must decide how the common expenses will be shared and this has happened for thousands of years. From elements of the own movement of Law and Economics, this thesis formulates a scientific proposition about this theme. Its the fiscal democracy. Starting from the basic assumption that the Law and the Economics influence each other in a dynamic of constant and no-ending stimulus and reciprocal feedbacks, this prevents the observation of the prevalence of one of these social phenomena over the other. On the fiscal democracy, there are three substances that interact like a system of checks and balances so that one influence and be influenced by the others in a likewise balance. They are: material freedom, equality of sacrifices and the non-inhibition, by the State, of the economic activity. The material freedom is about the respect to the basic rights of property (in ample sense) and free initiative, whose exercise allows to the individual decide how to better satisfy their needs and desires, not submitting themselves, wherefore, to the wills of the State and charity. The equality of sacrifices reveals itself in the needing that the loss of welfare due to the tax payment to be equally shared amongst all citizens thats obtained by applying the principles of contributive capacity, progressivity and personality in order that the origin of tax, the maximum possible, is that from the direct taxes paid by the natural persons (over the income, property and goods trades in general). Its that the indirect taxes, besides those paid by companies, usually give an indirect regressive quality to the Tax System. The non-inhibition of the economic activity allows the increase of the tax payment, once the taxes, in general, occur over economics facts and acts. This way, with more resources, State can better attain to the constitutional missions. Therefore, taxing cannot be in a way to create market distortions or, worse, stimulate that the contributors abandon the legal system and start working, always when possible, on the informality, because, in those cases, the Public Treasure is the one aggrieved.

This master thesis deals with the influence of installation of ecological taxes upon public budgets. The aim is to review, whether collecting of ecological taxes caused reduction of consumption of the taxed fuel and energy. The comparative method is used here to compare the budget and the real payment of the ecological taxes in 2008 and 2009 in the Czech republic. The well-arranged tables and graphs show the comparison of the consumption of the fuel and energy since 2005 to 2009. The result of the research shows, that the collecting of the ecological taxes did not reach the expected amount, so the planned budget was not filled up. The consumption of the fuel and the energy in 2008 and 2009 decreased as expected, but it is impossible to appoint safely, whether the decrease was caused by the implementation of the ecological taxes to the czech legislature.

The focus of my diploma thesis is the analysis of the present taxation laws, with an emphasis on the corporate income tax and the value-added tax in both the Czech and Slovak Republics. This thesis provides an analysis of and methods for tax-base framing and their respective impacts on the final corporate income tax in the Czech and Slovak Republics. With respect to the value-added tax, this thesis concentrates mainly on the intracommunitary benefits as these are important for entrepreneurs for the development of foreign trade.

In 1997 industrialized nations, the Third Conference of the Parties to the United Nations Framework Convention on Climate Change, met in Kyoto, Japan to sign a treaty (the “Kyoto Protocol”) in terms of which industrialized nations would be required to reduce their greenhouse gas emission by at least five percent below 1990 levels by the end of the “first commitment period” 2008-2012. South Africa is not regarded as an industrialized nation, but nonetheless acceded to the Kyoto Protocol in 2002. The literature reviewed in the present research reveals that, although idealistic, the Kyoto Protocol has been problematic. Fourteen meetings of the Conference of Parties to the Kyoto Protocol between 1997 and 2011 have achieved little more than to repeatedly defer and redefine Kyoto obligations. This research was undertaken to document the existing environmental taxation policies employed in selected international jurisdictions with a view to providing a framework for environmental tax policy formation in South Africa to assist this country in meeting its “greenhouse gas” emission targets, while at the same time promoting economic growth. A doctrinal research methodology was adopted in this study as it mainly analysed and interpreted legislation and policy documents and therefore the approach was qualitative in nature. An extensive literature survey was performed to document the various environmental policies that have been legislated in the selected jurisdictions. Comparisons were drawn with proposed tax policy measures for South Africa. The literature indicates that in the selected international jurisdictions carbon taxes achieved less-than-optimal results, largely due to political and industry-competitive agendas. With South Africa planning to introduce a carbon tax, it is submitted that the implementation of a carbon tax regime in isolation will be counter-productive, given South Africa’s economic profile. On the basis of the literature reviewed, it was concluded that South Africa should consider “recycling” carbon tax revenues within the economy to fund a broad-based tax incentive regime that will stimulate the change to non-carbon energy whilst promoting growth through sustainable development

The diploma paper treat of problems tax strokes upon consumer´s expenses of selected earnings groups of household. Opening section is dedicated to historical development of consumer taxes in segmentation whereon value added tax and particular consumer´s taxes, which are below analyse in theorist part together with determination of living and subsistence level and presentation of receipts and expenditures condition of citizen Czech Republic in selected interval including detailed analysis of consumer´s expenses of selected household representatives. The practical part includes comparing of taxes impact upon consumer´s expense quite three receipts group of household, within them is separately given the progressive of value added tax and particular consumer´s taxes, whose sum determine total charge of consumer´s expense each household from consumer´s taxes. The goal of diploma work is assessment the strokes of consumer´s taxes upon selected earnings groups of household leading to generalization of achieved results.

In this diploma project I am describing principles, purpose and construction of revenue taxes for nature persons in Czech Republic and in Italy and I am analyzing different between revenue taxes by Czech an Italy legal regulations. Czech revenue taxes for nature persons results from Zákon č. 586/1992 Sb., o daních z příjmů and the Italy revenue taxes for nature persons results from Testo unico del 22/12/1986 n. 917. In theory part there were analyzed parts of Czech and Italy revenue tax laws and taxation revenue from employment and from entrepreneurial activity more detailed. In practical part were chosen 5 examples on taxation of wages and 5 examples on taxation of business revenues. In these examples are demonstrated the biggest different in revenue taxation in Czech Republic and in Italy.