The article analyzes the features of management decision-making (DM) in small and medium-sized businesses in a dynamic change. It is shown that the importance of management decisions in recent decades has increased significantly. The peculiarities of managerial decisionmaking in SMB in the conditions of dynamic changes are analyzed.The influence of limitations is shown and the basic criteria of an estimation of administrative decisions are noted. It is noted that the most effective means of supporting management decisions are expert methods that have proven themselves both for assessing and forecasting the characteristics of the market object and for developing scenarios for enterprise development.It is shown that in the presence of a high organizational culture at the enterprise, it is advisable to conduct an examination by a team of insider experts. The principles of development and decision-making by a team of insider experts are given, which allow to significantly reduce costs. The expediency of conducting an expert evaluation by a team of insider experts is substantiated.