Problem setting. In the current conditions of digitalization of social relations, the implementation of the latest digital technologies in the sphere of public legal relations is of great importance. Tax relations are certainly one of such relations. Such technologies (FinTech, Blockchain) create both new opportunities for the participants of such relations (we are talking about the interaction of the state represented by regulatory authorities and taxpayers) and certain challenges for taxpayers. analysis of recent researches and publications. The issue of using modern digital technologies, including in the field of taxation, is currently very relevant. Some aspects of the use of digital technologies in the financial sector are covered in the works of such domestic scholars as: H. Bukharin, O. Dmytryk, R. Samsin, O. Terliuk, K. Tokarieva, V. Riadinska, ect. At the same time, no comprehensive research on this topic has yet been conducted. Purpose of the research is to analyze foreign experience and trends in the use of modern digital technologies in the field of taxation in Ukraine. article’s main body. Attention is focused on the lack of legislative consolidation of the category “blockchain” in Ukraine. It is emphasized that blockchain technology implements the principle of convenience of taxpayers’ tax liability fulfillment. In Ukraine, a similar principle has also been enshrined in legislation, namely, the principle of uniformity and convenience of payment, enshrined in Article 4 of the Tax Code of Ukraine. The author argues that in the context of the topic under study, this principle should be considered broader than just the convenience of payment, since taxpayers and regulatory authorities have relations not only with regard to payment of taxes and fees. It is noted that under martial law in Ukraine, the use of digital technologies and electronic services has greatly simplified the interaction of obligated and authorized participants to tax relations. It is stated that when using blockchain, the security of data (information) contained in the relevant registers or services is enhanced, and thus, the protection of taxpayers’ rights is ensured. This is one of the issues of great concern to taxpayers ensuring the security and protection of tax information transmitted between the relevant parties to tax relations. conclusions and prospects for the development. It is emphasized that the purposes of using this digital technology in taxation are different for each particular State, depending on the country’s tax policy. Based on the analysis of foreign experience of implementing blockchain technology in the tax area, the author emphasizes the importance of creating a high-quality legal framework for such innovations, since this will be crucial for further practical application of such mechanisms and will create relevant consequences, affect the quality of the State’s tax policy and form an appropriate model of interaction between regulatory authorities and taxpayers.