The monograph investigates the system of concepts used in customs activities. Concepts from the field of customs policy, from the spheres of customs-tariff and non-tariff regulation of foreign economic activity, as well as the application of methods for assessing customs activities . are analyzed. Recommendations on the use of the system of concepts in the practice of customs. It is intended for the management staff and specialists of analytical units of the Federal Customs Service of Russia engaged in the preparation of strategic and methodological documents devoted to the development of the customs service .. The presented materials can be useful for students, graduate students, scientific and pedagogical staff in the development of the foundations of the theory of customs affairs, the theory of economics of customs affairs, as well as the theory of customs law.