Determining the economic sustainability reserve of economic entities in modern operating conditions

In complex socio-economic and political conditions, economic entities must have a sufficient level of stability its reserve for normal life activities. Therefore, the problems assessment analysis are urgent require immediate solution. The purpose article was to study determination sustainability entities, reserve, substantiation logic stages this determination, formation an appropriate analytical tool. research process, general scientific special methods were used: abstract-logical method, systematic approach, synthesis, graphic method building integral taxonomic indicator development, multi-criteria optimisation, multi-factor regression analysis, genetic algorithm, marginal utility cluster analysis. presents selection system indicators state sector Ukraine across regions from point view their legislative basis. order determine public regions, economic-mathematical model optimisation developed solved using which is new support in economics solving problem. A result modelling forming partial criteria dependency optimisation. provides procedure implementing justifying final single optimal solution problem determining values indicators. It has been proven that it advisable absolute value by clusters, obtained on basis regional gross product per person. practical significance lies fact such scientific-methodical approach allows objective development management decisions at industrial enterprises ensure activities difficult war post-war conditions