In the scientific literature, the understanding of the legal nature of the responsibility of members of self-regulating organizations causes conceptual discrepancies. This liability is considered as a separate type of legal liability based on civil law principles. In the laws regulating issues of self-regulation with mandatory participation, the concept of disciplinary misconduct is used, which leads to the use of the name of this responsibility as «disciplinary». Nevertheless, the special grounds for the liability of members of a self-regulating organization, the subject composition and the nature of legal relations make it possible not to identify the responsibility in question with disciplinary liability in labor and administrative law. The Law on Self-Regulation and legislative acts concerning mandatory self-regulation contain the basics of regulating liability issues, but these norms need to eliminate contradictions. In addition, it is necessary to provide for the definition of the concept of responsibility of members of self-regulating organizations and its elements (misconduct, penalties). The study of internal documents of self-regulating organizations in terms of the responsibility of their members revealed the inconsistency of the content of the documents with certain requirements of the Law on Self-Regulation. Based on the results of this work, the specifics of the responsibility of members of self-regulating organizations are noted, the features and shortcomings of the regulatory regulation of this institution in the Republic of Kazakhstan are identified, facts of violations of legal norms in law enforcement practice are revealed, and differences in the approaches of organizations to choosing the procedure for bringing to responsibility and determining liability measures are established. Solutions are proposed for the identified shortcomings. The conclusions obtained in the course of this study can be used in scientific research and legislative work.