EN
Tax systems in some countries only serve to prevent the onset of the financial crisis and excessive public debt and budget deficit in relation to GDP. The article presents the author's analysis of the impact of taxes scale on financial stability and economic sustainability of countries. The concept of a hypothetical share of tax on GDP for the analysis of social ineąuality is introduced. An assessment of fiscal policy in the European Union and Norway between 2000 and 2010 was prepared. Usefulness of higher taxation (consumption, labor and capital) in the context of the need to reduce public debt in many countries was estimated, too. (original abstract)