Improving and developing the national payment system is the key to sustainable development of the entire economy of the country. One of the such current areas is implementation of a new financial instrument in the Russian Federation - the Digital Ruble. The article is devoted to the analysis of the concept and legal nature of the digital ruble, as well as the identification of problem areas of domestic legislation regulating the issue and circulation of the digital ruble. The paper examines various doctrinal approaches to the problem of legislative regulation of digital currencies, digital financial assets and the digital ruble. It is concluded that the concept of «Digital ruble as the third form of money» does not correspond to legal reality, and the new financial instrument should be classified as non-cash money. Problem areas of domestic legislation regulating the legal status of the digital ruble are noted.