The article systemises methodical instruments for evaluating efficiency of measures of digitalisation of business processes of enterprise. A schematic diagram of a general algorithm for evaluating the effectiveness of measures to digitalise the business process of enterprises has been developed. It is determined that assessing the degree of effectiveness of measures to digitalise the business processes of enterprise will also indirectly create conditions for identifying bottlenecks, based on which the management of enterprise will be able to make operational management decisions to optimise the business process through its digital development. It is substantiated that the assessment of business processes and their digitalisation should lie within the functional responsibilities of a certain entity; for this purpose, it is proposed to establish committees at the enterprise to assess the efficiency and digitalisation of business processes. In addition to formulating proposals for eliminating bottlenecks and directions and methods of digitising the company's business processes, the functional responsibilities of the Business Process Efficiency and Digitalisation Committee include the function of assessing the efficiency of an already digitised business process. For this purpose, the Committee develops analytical tools using established business process evaluation methods adapted to the evaluation of a digitised business process, which may include the PDCA cycle, internal audit of business processes, analysis of key performance indicators, functional and cost analysis, and analysis of stakeholder requirements. Each of the proposed instruments for evaluating the effectiveness of measures to digitalise the enterprise's business processes is adapted. It is summarized that when assessing the efficiency of business processes with a view to determining the need for their digital transformation or assessing the efficiency of a digitised business process, it is advisable for an enterprise to approach this issue in a comprehensive manner, namely, to develop clear policies and procedures by establishing and regulating the activities of the committee for assessing the efficiency of the enterprise's business processes by delegating to it a responsible person from each unit for managing business processes that create value or participate in this process.