The article discusses the problems of the electronic customs declaration system in Kazakhstan, as well as its impact on the transport complex of the republic. The object of the research is the customs information system "ASTANA-1", the subject is the process of electronic customs declaration. The importance of the study lies in the need to determine the directions for improving the quality and speed of customs control over goods arriving in Kazakhstan. The theoretical basis of the research was formed by such methods as observation, analysis, synthesis, and the method of expert assessments. The conclusion obtained as a result of the study is to identify recommendations for the modernization of the technical level of IS "ASTANA-1" to simplify and speed up the processes of electronic customs declaration.