1 Abstract To study the effect a change in a tax base has on the corresponding tax revenue is a useful tool to better predict future tax revenues. This property is called a tax revenue elasticity but generally it does not get as much attention as it deserves, and when it does, key points like using data adjusted for the effects of tax reforms or distinguishing between the short-run (instantaneous) and the long-run (equilibrium) elasticity are often omitted. In my thesis, I am the first one to estimate the tax revenue elasticities for Slovakia. I use a unique dataset adjusted for the effects of tax reforms and tax changes to estimate both the short-run and the long-run elasticities for the three tax categories th at account for the majority of each year's tax revenue - Personal Income Tax, Corporate Income Tax and Value Added Tax. I obtain a long-run elasticity of 0.98, 1.28 and 0.94 for the Personal Income Tax, the Corporate Income Tax and the Value Added Tax respectively and a short-run elasticity of 3.51 and 1.93 for the Corporate Income Tax and the Value Added Tax respectively. I do not obtain a significant estimate in the case of the Personal Income Tax. Additionally, I find that it takes more than a year for the elasticity to reach its equilibrium value for all the three tax categories and that there...

Individuals are constantly on the lookout for tax incentives or ways in which they can pay less tax without ending up in the tax authorities‟ bad books. Driven by the desire for a better life, individuals are willing to try everything within their legal powers and rights to avoid having to pay exorbitant taxes. South African employees are in no way an exception to these circumstances. Urged on by their belief that South African taxes are unreasonably high, individuals have crossed international borders in the hope of finding a location where their income will not be subject to exorbitant taxes. Research on the effects of taxation on labour migration has been carried out in countries such as Australia, the Netherlands, Norway and Indonesia. Although greatly affected by the growing population of labour migration, the majority of the research conducted in South Africa with regard to labour migration has focused mainly on the reasons motivating migration among skilled South African labourers. As far as could be determined, little or no research has been conducted to assess whether the reasons (inter alia, the South African personal income tax system) cited by South Africans justify the rapid rate at which South Africans flee from the country. The aim of this study is to establish whether South African employees working in the Netherlands and Australia receive any tax incentives or beneficial tax treatment that they otherwise would not have received had they remained employed in South Africa. This objective will be achieved by assessing whether a South African employee is placed in a more beneficial tax position when they accept international employment assignments in the Netherlands and Australia as opposed to the tax position they would find themselves in should they turn down any and all international employment assignments (i.e. remain employed in South Africa no matter what). The study will discuss the tax principles an employee will be subject to upon accepting an international employment assignment in either Australia or the Netherlands. The tax principles of the respective countries will then be compared to those applicable to employees who remain employed in South Africa. This comparison will be conducted with the primary objective of establishing in which of the three countries a South African employee receives the most beneficial tax treatment. AFRIKAANS : Individue is voortdurend op die uitkyk vir belastingtoegewings of maniere waarop hulle minder belasting kan betaal sonder om by die belastingowerheid in die moeilikheid te kom. Aangedryf deur die begeerte vir 'n beter lewe, is individue bereid om alles te probeer om binne hul wetlike magte en regte te voorkom dat hulle buitensporige belasting betaal. Suid-Afrikaanse werknemers is geen uitsondering in hierdie verband nie. Gemotiveer deur hul siening dat Suid-Afrikaanse belasting onredelik hoog is, het individue internasionale grense oorgesteek het in die hoop om 'n plek te vind waar hul inkomste nie onderhewig sal wees aan buitensporige belasting nie. Navorsing oor die effek van belasting op arbeidsmigrasie is in lande soos Australië, Nederland, Noorweë en Indonesië onderneem. Die meeste van hierdie navorsing het gefokus op die redes waarom geskoolde Suid-Afrikaanse werkers emigreer. Sover vasgestel kon word, is min of geen navorsing gedoen om te bepaal of die redes (onder meer, die Suid-Afrikaanse persoonlike inkomstebelastingstelsel) aangehaal deur Suid- Afrikaners die vinnige tempo regverdig waarteen Suid-Afrikaners die land verlaat nie. Die doel van hierdie studie is om vas te stel of Suid-Afrikaanse werknemers in Nederland en Australië enige belastingtoegewings of voordelige belastingbehandeling ontvang wat hulle nie sou ontvang het as hulle in Suid-Afrika in diens gebly het nie. Hierdie doel sal bereik word deur te bepaal of 'n Suid-Afrikaanse werknemer in 'n meer voordelige belasting posisie geplaas word wanneer hulle internasionale indiensnemingsopdragte in Nederland en Australië aanvaar, in teenstelling met die belasting posisie waarin hulle hulself sal bevind indien hulle alle internasionale indiensneming werkopdragte van die hand wys (maw tot elke prys in Suid-Afrika in diens bly). Die studie sal die belastingbeginsels bespreek waaraan 'n werknemer onderhewig sal wees by die aanvaarding van 'n internasionale indiensnemingsopdrag in Australië of Nederland. Die belastingbeginsels van die onderskeie lande sal dan vergelyk word met dié wat van toepassing op werknemers wat in Suid-Afrika in diens bly. Hierdie vergelyking sal plaasvind met die primêre doel om te bepaal in watter van die drie lande 'n Suid-Afrikaanse werknemer die mees voordelige belastinghantering ontvang. Copyright 2011, University of Pretoria. All rights reserved. The copyright in this work vests in the University of Pretoria. No part of this work may be reproduced or transmitted in any form or by any means, without the prior written permission of the University of Pretoria. Please cite as follows: Mabaso, ND 2011, An international comparative study of the effect of personal income tax on labour migration, MCom dissertation, University of Pretoria, Pretoria, viewed yymmdd < http://upetd.up.ac.za/thesis/available/etd-03122012-125824 / > F12/4/170/gm / Dissertation (MCom)--University of Pretoria, 2012. / Taxation / unrestricted

This thesis is focused on the employer-employee relationship in accounting and taxation. It offers a general view on the process from formation of employment relationship to its termination. Income tax and social insurance represent the key areas establishing a wide variety of rights and obligations for both parties. The final part of the thesis uses a model situation to demonstrate an employment relationship.

Comparison of level of taxation of tax non-residents' income and comparison of the level of the social security and health insurance contributions of tax non-residents in the selected EU countries and its impact on international labour migration.

Diploma thesis is focused on average effective tax rates of personal income tax. The thesis defines average effective tax rate in its first chapter, and indicates different methods of computation of average effective tax rate. In second chapter, the thesis is focused on average effective tax rates in selected EU countries. These countries are member EU countries, which apply flat personal income tax rate - Czech Republic, Bulgaria, Estonia, Lithuania, Latvia, Romania and Slovak Republic. The thesis describes basic characteristics of personal income tax and social insurance in these countries. Further effective tax rates are calculated for employees and sole traders in specific income categories. The thesis compares amounts of tax allowances in its last chapter, and compares the impacts of these allowances on tax liability of taxpayers. In the end, obserevd effective tax rates in selected countries are compared.

This work analyse the current discussions and theoretical approaches to personal and corporate taxation (not only in OECD countries). After the introduction, which is focused on theory of income taxation, follows chapters, that analyze the attitudes and issues of personal and corporate taxation. This two main chapters contain synthetic parts, whose outputs are the emerging trends in the future. The emphasis was put on OECD outcomes and recommendations.

Resumé The diploma thesis is entitled The Comparison of taxation of income of individuals - employees and entrepreneurs. Basically it is divided into three main parts. The main goal of the diploma thesis is to find out whether there is a difference between the taxation of employees` income and entrepreneurs` income. If the difference exists then find out why and whether it should be eliminated. The thesis distinguishes two main comparisons - one that is focused on the employees or entrepreneurs as a group and other which concentrates on taxation of concrete individuals of each group. In the end some proposals of changes are given. The thesis is structured into three parts. The first one is trying to define essential terms of the thesis such as - a tax, an employee or an entrepreneur. As for the tax the thesis marks the social security and health insurance contributions as a part of taxation too because they are very similar to traditional meaning of a tax. When there is spoken of an employee the thesis is trying to suggest the difference between its meaning in labor law and financial law. The next chapter describes a tax base and how it is created for an employee or entrepreneur. The standard procedure is mentioned but mainly it is focused on the essential differences between the taxpayers when the tax base...

The thesis deals with the estimation of labour supply responses to the personal income tax reform in the Czech Republic adopted in 2008 by applying quasi experimental design known as "difference-in-differences". By exploiting the different change in the effective tax rates for various population subgroups as a natural experiment and using microdata from European Labour Force Sur- vey we constructed the treatment and control groups according to the highest attained level of education serving as a proxy for an income range that assigns an individual to the particular tax bracket before and after policy change. Analysing one-person households we found significant negative effect on the labour force participation and significant positive effect on the hours work of the treated by comparing these outcomes for the treatment and control groups in the baseline and follow up periods before and after the reform. JEL Classification C21, D04, H24, H31, I38, J22 Keywords tax reform, labour supply, natural experiment, difference-in-differences Author's e-mail janxtomo@gmail.com Supervisor's e-mail gebicka@fsv.cuni.cz

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.

- The comparison of personal income tax in the Czech Republic and France The diploma thesis deals with a comparison of personal income tax in the Czech Republic and France. The thesis comprises of analysis of both countries' national legislations and of subsequent comparison of the impact of legal tax rules on the tax liability of natural persons. The focus is aimed mainly on the key differences between the compared legislations with respect to the income from employment of taxable persons. The diploma thesis is divided into six chapters. The first chapter, called Taxation in the theoretical sphere, is dedicated to the definition of personal income tax, categorization of the tax itself and legal sources, which determines the personal income tax in both legislations being compared. The object of the second chapter is comparison of the tax constituents of personal income tax in both legislations and their application within determination of taxpayer's liabilities. The chapter three is focused on selected tax constituents of personal income tax in the Czech Republic, while aiming to address mainly income from employment of Czech taxpayer, and also the tax constituents affecting the taxable income base and the final tax liability. The fourth chapter, being called Selected components of personal income...