Abstract: The subject of the present research is the legal bsis of interaction between states in the sphere of informatin exchange on tax issues. The purpose of the present research is to analyze legal forms of such interaction and prospects for its development as well as the influence on Russian tax and levy legislation. As a result of the research, the author provides a complex analysis of the legal basis of information exchange in the tax sphere as it was developed by OECD. The author also analyzes and demonstrates the basic forms and kinds of such interaction and describes the current state of agreement between states, opportunities and prospects of Russia's participation therein. The results can be used in academic and research activity related to studying international cooperation on tax, administrative and information issues as well as Russia's participation therein. To analyze legal grounds of state-to-state interaction in the sphere of information exchange on tax issues, Russian tax and levy laws, the author has used the following research methods: formalistic, historical law and comparative law methods. The novelty of the research is caused by the object of the research, i.e. provisions of recently adopted international law documents on the issues of information exchange between states in the sphere of taxes and their implementation by Russian law. The reserach has allowed to make the following conclusions: to develop the legal cooperation in the tax sphere including information exchange, it is necesary to focus not only on the formal but also political aspect. One of the essential conditions for ensuring rules of taxation of international economic activity and increasing efficiency of international cooperation is the organisation between information exchange and cooperation on administrative issues; and the fact that Russia does not have the status of an OECD member should not prevent itfrom improving its legislatin based on OECD guidelines as well as to impolement OECD standards and rules in Russian practice.