The aim of this paper is to analyze and evaluate the impact of logistical outsourcing on the overall quality of the level of the logistical service of enterprises-producers in supply chains. In this study, special attention is paid to the estimation of indicators of logistics service as by their own forces and due to outsourcing and assessing the elasticity of these indicators, for an example, in Sumy Engineering Works Ltd.As a result of the study, in case of their own delivery, logistics service level is higher than in case of logistics outsourcing. It may be related to the fact that in the first case, at the industrial enterprises, there is higher level of control over the process and the capacity for flexible and rapid response to various demands of consumers, which is very important for competitiveness. It was determined how the value of each individual index varies with the change in the supply control volume.