In the article the issues of entrepreneurial activity conducting are investigated, in particular, the analysis of its reliability. The topicality of this issue is determined by the current special role of entrepreneurship in forming of the financial, economic and social development indicators of both the state as a whole and of its individual regions. The generalized analysis of the main statistical indicators of enterprises in Ukraine and Lviv oblast was performed for 2010 and 2016, and it showed that small and medium entrepreneurship is dominant in it.
Reliability of conducting business activity is one of the most important characteristics, therefore it is necessary to have an objective assessment of it. The author’s study of reliability as the ability of objects (processes) to maintain the necessary properties for a long period of time has shown that it is not sufficiently studied in relation to economic systems, and especially at the macro level – the level of region or of state.
In the paper the methodology for analyzing the reliability of entrepreneurial activity is proposed and tested on the example of statistics of small enterprises of Lviv region. The value of partial and integral index-coefficients of performance reliability estimation for the activity of small enterprises in Lviv region is received. The scale of assessing the degree of reliability of entrepreneurial activity is recommended, depending on the value of the reliability index. Conclusions regarding the directions of increasing the reliability of entrepreneurial activity at the regional level and the necessity of its analytical research are made. It is determined that the prospects of further investigation of this problem should concern certain types of activities, subjects of entrepreneurial activity, etc., using new qualitative methods of analysis and economic and mathematical methods. 

entrepreneurship, entrepreneurial activity, reliability, small enterprises, analysis