The article proposes an approach to justify the tool for internalizing external effects from emissions of pollutants by motor vehicles in the territory. It is based on the proposed methods to determine the environmental sustainability criterion, taking into account the characteristics of the ecosystem of the territory, estimating the masses of pollutant emissions by different vehicles in the territory and the economic damage to the ecosystem from the emission of toxicants. The direction of development of the regional tax system with its greening is presented. The features of the formation of an environmental tax on cars depending on the development objectives of the territory and the mechanisms for their implementation are considered. The consequences of the influence of proposals on various sectors of the economy as a whole and the agricultural sector in particular are determined.

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Simulation mathematical model of small enterprise functioning is under analysis in this article. It is assumed that annual working capital profitability and loan rate are random variables with normal distribution, the amount of borrowed capital does not exceed the amount of own working capital. Given the value of its working capital at the beginning of time, its dependence on time is constructed as a random process. The parameters of random variables are estimated based on the processing of statistical data on the previous activities of this enterprise. The implementation of the random process is statistically modeled. With the help of the statistical tests, implementations of random function of growth of own working capital are built and the probability of bankruptcy is estimated as relative frequency of cases of adoption of negative value by random function. It is proposed to use the built simulation model of the enterprise to estimate the probability of bankruptcy of the studied enterprise in the coming period (a given number ofyears).