Daňové a pojistné systémy ve vybraných státech EU

The aim of this master thesis is the comparison of selected elements of the tax and social security systems in the Czech Republic, Slovakia, Austria and Germany, which are related to employees and employers and it is counted with them in model examples, then evaluation of advantages and disadvantages of employees´ migration under the structure of posting between the Czech Republic and other countries and finally the comparison of employees´ incomes after receiving benefits from social security system of each country (especially old age pension and parental allowance). In the first part of the thesis there is explained problematics of double tax treaties and EU coordination of social security. Then there is the comparison of above mentioned elements of the tax and social security systems in each country. In the last part I apply findings on model employees and I make a conclusion from amount of their net incomes. Migration to another EU member country is the most profitable for employee who is subjected to taxation in other EU countries but he remains under the Czech social security system. In terms of social benefits, retired people are supported the most in Austria and families with children in Germany.