The dependence between a country’s prosperity and the progressivity of a private person’s income tax rate scale

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Аннотация: The article is dedicated to the study of the dependence existing between a country’s prosperity and the progressivity of a private person’s income tax rate scale. The authors analyze the factors and identify their influence on the country’s prosperity and flourishing. The research included analysis of forty randomly chosen countries. The impact of the following factors on the prosperity and flourishing of the country was considered: the gross domestic product per capita; the average, monthly salary; the Gini index; the national debt, then share of gold in the international reserve assets. The authors have determined the power of functional dependence of country’s flourishing index on the index of income tax rate scale progressivity and the correlation coefficient that has been calculated. Along with the known prosperity indices of world countries used by the UN, the new income tax rate scale progressivity indices are introduced in the article. Based on the above, the authors introduce new aggregated interval social and economic indices, and namely: multifactorial country prosperity indices and multifactorial country flourishing indices. These aggregated indices were calculated for forty main world countries, for which the authors managed to find all initial indices. Analysis of the world country ratings by prosperity and flourishing indices (for 2009-2012) indicates that the values of Russia and Brazil are close. In general, in all ratings both countries are located in the lower decimal parts (in lower first and lower second parts) of corresponding indices value intervals. Besides that, it is shown that there is a positive linear trend dependence between country flourishing and tax rate scale progressivity of individuals income. Moreover, by the calculation of the selective correlation coefficients, the authors show that this linear trend dependence is linear functional to a large extent. The flat tax rate schedule adopted in Russia has a negative impact on the country’s prosperity.

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