The article examines the legal aspects of introducing and using the digital ruble in the field of state and municipal procurement in the Russian Federation. It analyzes the current rules of civil and budget law, as well as recent amendments concerning the central bank digital currency. The study provides a comprehensive analysis of the regulatory framework governing settlements under state and municipal contracts, including the provisions of Federal Law № 44-FZ, Federal Law № 275-FZ and contemporary scholarly publications on the subject. It examines the mechanisms of settlements using the digital ruble and identifies the main legal conflicts arising from its application within the contract system. The author concludes that legislation must be adapted to ensure the full integration of the digital ruble into the public procurement system.