The article considers the essence and main properties of the tax potential of the region. The structure of tax potential, including three main components – realized, unrealized and forecasted ones – is studied. It is proved that the main sources of tax potential formation are potential tax revenues, opportunities of taxpayers, tax base resources and rates. The results of an analysis of tax revenues structure in Consolidated Budget of Ukraine for 2013–2019 have shown that the actual tax

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... forming the realized component of the tax potential, occupy the largest share among all types of budget revenues. The main budget-forming taxes in Ukraine are personal income tax, value added tax, corporate income tax, and excise tax. The characteristics of the existing methods of assessing the tax potential in the region, their advantages and disadvantages are given. To assess the tax potential of the regions in Ukraine, the method using the index of tax potential based on gross regional product has been applied. The analysis of the tax potential index has allowed to systematize the regions of Ukraine into groups according to the indicator of tax capacity, to objectively assess the real income opportunities of each region in the country and to prove that the factors of influence on increasing tax potential should be the growth of gross regional product and income. It is proved that the assessment of tax potential is an important step in the system of tax planning and forecasting, which is based on information about the level of potential income. Based on the results of the assessment of the tax potential of the regions, it is advisable to develop measures aimed at expanding and improving the structure of the tax base, which may be prospects for further development in this area.