This paper analyses the evolution, objectives, and instruments of fiscal conditionality legislation of the European Union. The author provides a detailed analysis of the relevant elements of the existing legislation, as well as the recent judgments of the Court of Justice of the European Union on the subject. The paper demonstrates that the Financial Conditionality Regulation is not an instrument for protecting the rule of law in general, but its general purpose is to protect the EU budget by enforcing the fundamental requirements deriving from the rule of law.