The subject of my bachelor thesis is tax duties of Construction Company SNN Bechyně a.s. The main purpose is to describe and analyze the economic situation of company and the tax burden in period 2009--2012. The first part contains general information about the enterprise and financial analysis using economic indicators. The second part deals with company tax burden analysis. Firstly there is theoretic description of taxes (income taxes, value added tax, property tax, road tax) and then using on the real enterprise data. The last part focuses on optimization aspects which are used by the company to decrease its tax burden and new possibilities of decreasing the tax burden even more