TY JOUR TI Increasing of the Role of Social Security in Taxing Personal Income As an Instrument for Smoothing the Spatial Polarization of Regions KW state budget KW financial system KW monetary funds of citizens KW individuals KW non-taxable minimum wage KW subsistence minimum KW average per capita cash income KW income tax KW tax rate KW special taxation regime. JO Scientific Research and Development. Economics AU Seferova, D.A. PY 2018 IS 6 PB INFRA-M Academic Publishing LLC.