Daňová konkurence u daně korporací v nových členských zemích EU

This diploma thesis is dealing with tax competition, especially in the European Union. There are explained concepts of tax harmonization and coordination, harmful tax competition and a tendency of the European Union to harmonization in corporate tax area. Statutory tax rates and implicit tax rates, which are better for measurement of real taxation, are used for analysis of tax competition in corporate tax area. Tax rates are compared between old and new members of the European Union to find out whether there is tax competitive environment in the European Union. In this diploma thesis one analysis of the European Commission about effective tax rates is also described. The aim of this thesis is verifying the hypothesis, whether is the tax competition in the corporate tax area in the European Union successful -- whether better conditions of taxation in new member states cause higher tax bases. In this diploma thesis there are also some notes about tax revenues.