The article considers the issues of determining the essence and stages of strategic planning of economic security of the enterprise, which is due to the need to establish its content and sequence of work on preventive measures against internal and external threats. The research methodology includes methods of analysis and synthesis – to study the essence of economic security of the enterprise, abstract-logical method – to establish the stages of strategic planning of economic security, tabular method – to visualize the material. It is determined that the lack of strategic planning leads to low efficiency of resource use of the business entity and the crisis, as well as to the loss of development opportunities. This has a direct negative impact on the positioning of the enterprise in the market, calls into question its existence in any long-term perspective. It is established that anticipation of crisis phenomena and preventive work on the development of mechanisms to counter them should be an integral part of the strategy of economic security management of economic entities. The generalization of approaches to defining the essence of economic security of the enterprise allowed us to establish that it combines the interrelated problems of preserving resources from negative factors and achieving success through stable operation and development. As a result, we propose our own definition, which corresponds to the resource-functional approach and takes into account the relationship between the achievement of strategic economic interests of the enterprise, the need for preventive action to prevent negative factors and ensure sustainable development of the entity. The existing scientific approaches are studied and our own idea of the sequence and content of the stages of strategic planning of economic security is presented, which is due to the logic of organizing work to determine strategic guidelines and economic interests of the enterprise, identification and neutralization of threats, implementation of plans and programs and monitoring their implementation and taking into account the possibility of feedback.