The aim of this thesis is a classification of the groups of tax evasion in the value-added tax and the excise taxes in the Czech Republic and its evaluation. The theoretical part is concerned with the definition of the tax evasion, the causation of its emergence and selected tools which can limit the tax evasion. The practical part describes the situations which form the tax evasion in the value-added tax and the excise taxes in the Czech Republic within several years. On the basis of the previous situation the classification of the groups of tax evasion is made. Then there are discovered the main groups of the tax evasion which are repeated every period and some of them are also the main groups of tax evasion in the European Union. Among t...