According to statistics by the Council of Taiwan, the fertility rate in Taiwan is the world's lowest in 2010. The average number of babies born to women of childbearing age life is 0.9 people. In other words, the average number of children per woman is less than 1. In 2023 Taiwan will enter a negative population growth. Taiwan's population structure becomes a declining birthrate, aging society.The future workforce reduction will greatly affect the competitiveness of Taiwan. The most important factor of decreasing fertility in Taiwan is economics.The majority of people think that raising children has become a heavy burden.Except for a few women, due to personal career planning, work and other factors not yet fertility or infertility .The majority of women still want to have her own children.The most people's attitude of giving birth is reserved because of high unemployment rate ,unsound preschool education system and little child-care subsidy . In the empirical study found that there is no relationship between the fertility rates and the amount of maternity allowance.That is maternity grant can not increase fertility rate. If maternity benefits can not be improved the fertility rate,the fertility incentives of tax breaks are smaller to people.There are some shortcomings of tax incentives for increase the birth,such as revenue loss,tax fairness and so on. It is also possible to increase the birth rate had no significant improvement. The government uses tax benefits to increase fertility rate depending on revenue loss and population growth . The amount and range of tax incentives should be calculated carefully in order to make a balance between the revenue loss and population growth.

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This thesis deals with analysis of the differences between men and women in the labour market and their impact on personal income tax. Analysis of labour market is made from two perspectives. First is the comparsion of the situation of Czech Republic throughout the European Union. In the second part I also compare these conditions between years 2000 and 2008. Analysis of tax revenue is made from data available in the United Kingdom, its results is evaluation of the factors which have impact on the total tax revenue. In the end, all of the findings are applied to major shortcomings of the Czech Republic system. The proposed solutions are mainly in the part-time employment, affordable and quality childcare and dependents, and a system of providing parental leave and parental allowances.

The dissertation is devoted to the questions of personal income tax. Because of the fundamental role of the personal income tax in the public finance area, it is very difficult to know variables that have an effect on its revenues in various countries and times. The attention is targeted on OECD countries. The paper begins with some thesis about tax functions of personal income tax in public finance and also with its importance in the tax mix in the nearly last forty years. Following part of the dissertation includes identification and a description of these variables that may have and effect on tax revenues regarding if these may have an effect on the personal income tax revenues. The variables were categorized into three groups -- economic, demographic and politico-sociologic. The main part of the paper is panel regression analysis with the fixed effects that is aimed at searching of various variables that have significant effect on the personal income tax revenues. In this part there are some regression models with the regression function linear in parameters or regression function nonlinear in parameters. The results of analysis are compared to each other and also to other author's results. Interpretation and summary of the results of analysis are also introduced.

The diploma thesis is focused on identification and partial quantification of tax reliefs of personal income tax in 2011. This diploma thesis is divided into 4 sections. The first one contains view of existing literature and research in the field of tax reliefs. The second one is theoretical and it is dedicated to the broad theory of tax reliefs and their operation in the countries OECD. The third one is theoretical-analytical and is focused on the view of definition among the particular countries and subsequent identification of tax reliefs in Australia and Canada. The main section of the diploma thesis is fourth part. This analytical part contains the identification and quantification of some provisions of tax reliefs of personal income tax in the Czech Republic.

The theme of the diploma thesis is "Progressive tax burden on households on income from individuals". The aim of this work is to examine the progressive burden on households of personal income tax, using model households. The purpose is also to determine which taxpayers and in which households have the greatest tax burden. The study is conducted using an average tax rate. The analysis is performed in years 2016, 2017 and 2018 on four taxpayers (which are different by the amount of gross wage), which are in five different types of households (according to their composition, taxpayers apply different types of discounts or tax advantages). The results of the thesis show that the higher the gross wage, the higher the average tax rate (the higher the tax burn on the taxpayer), which is also more balanced than the poorer taxpayers. There is a minimal difference between rates year-on-year. Personal income tax is progressive.

During the transformation process, the reform of public finances (in particular the tax system) is crucial for Georgia. There are a lot of proposals and suggestions in the financial literature concerning the introduction of tax systems in transition countries. Individual taxes or the entire tax system should be elaborated regarding certain criteria. This paper analyzes the tax reform procedures during the transition of Georgia to the free-market economy as well as the existing tax system. Concerning the taxes, the current tax system is more or less duplicated from the Western European countries. It becomes obvious that the chance of developing a rational, sustainable and adjusted tax system for transition countries was missed.

Tax estimation is a fundamental prerequisite for a sustainable fiscal policy. This paper uses the Georgian Household Survey and s simple microsimulation model in order to describe the household incomes in Georgia for the year 2005, their structure and regional distribution within eleven historical regions. Based on a thorough analysis of the existing taxable incomes and following the documentation of the applied model both a tax allowance and three percent raise of the income tax are estimated with respect to tax revenue and distributional effects. The paper comes to the conclusion that the poor income situation of most Georgian households can be mitigated by a tax allowance but is very difficult to be financed because of expected revenue losses. In spite of some progressive distributional effects of an increase of the tax burden, most households will find a very hard to cope with additional tax liabilities.

This dissertation comprises two essays that attempt to determine, empirically, the relationship between personal income taxation and income inequality. The first essay examines whether income inequality is affected by the structural progressivity of national income tax systems. Using detailed personal income tax schedules for a large panel of countries, we develop and estimate comprehensive, time-varying measures of structural progressivity of national income tax systems over the 1981–2005 period. Our findings suggest that progressivity has a strong negative effect on inequality in reported gross and net income and that this negative effect is strongest in countries whose institutional framework supports pro-poor redistribution. However, the effect of progressivity on true inequality, which is approximated by consumption-based measures of the GINI coefficient, is significantly smaller. The second essay relies on household level data and complements the first in its empirical approach. We simulate the distributional impact of the Russian personal income tax (PIT) following the flat tax reform of 2001 using data from the Russian Longitudinal Monitoring Survey. We use a series of counterfactuals to decompose the change in the distribution of net income into a direct (tax) effect and an indirect behavioral effect. As expected, the direct tax effect increased net income inequality. Changes in the pre-tax distribution, on the other hand, had a large negative impact on inequality thus leading to an overall decline in net income inequality. We also find that the tax-induced evasion response increased reported net income inequality while reducing consumption based measures of net income inequality.

This work deals with problems of flat tax, especially problems of personal income tax. The introduction is focused on Czech tax reform´s characterization, especially on reasons of this reform and on expected benefits. Subsequently there are mentioned and analyzed principles of a good tax system and of course there are mentioned the key principles of the flat tax. The practical part of this work deals with the flat tax´s impact on the state budged - could flat tax decrease income to state budget and consequently increase the public debt? In summary are recapitulated all facts about Czech flat tax. Follow there is evaluation of this reform {--} if flat tax encourage economic growth and if flat tax simplifies the tax system, if is Czech reform successful and reform´s advantages and disadvantages.