Abstract
The article is devoted to the analysis of the growing trends in the sustainable development of the tax system of Kazakhstan in an unstable economy.The theoretical prerequisite is the lack of uniform methodological and methodological approaches to the definition, as well as to the formation and organization of the tax system, including in an extremely unstable economic situation.The article assesses the dynamics and structure of tax payments in the context of the economic crisis, offers modern tools of tax regulation.The main research methods were traditional: analysis and synthesis, systemic and institutional approaches, methods of induction and deduction, and the method of designing hypotheses was also used.The theoretical and practical significance of the study lies in substantiating the need to form an adaptive tax system to ensure sustainable growth of the national economy.