Od DAC1 do DAC7. Rozwój automatycznej wymiany informacji do celów podatkowych w ramach Unii Europejskiej

National tax systems no longer fulfill all their functions in a dynamically changing economic environment, in which cross-border capital flows play an important role. Tax evasion or avoidance has taken on a very large scale in macroeconomic terms. Therefore, between 2011 and 2020, the European Union has implemented seven directives commonly referred to as DAC, enabling member states to make financial information available for tax purposes. The goal of this activities was to reduce coun- ter tax optimization and identification of dishonest taxpayers. The article provides information on the assumptions and reasons for the adoption of directives. The aim of the article is to critically analyze the effectiveness of financial information exchange. A basic research question was formulated: do European Union regulations meet the expectations formulated at the design stage? According to the results of the research, despite intense activities of the European Union institutions, the process does not work fully optimally and requires changes.