This article deals with selected aspects of the Europeanization of public finance law. For this reason, the article focuses on some important sources of European public finance law and their impact on the budgetary discipline of member states. In this context, the attention is paid to the Treaty on Stability, Coordination and Governance in the Economic and Monetary Union (TSCG), which is not a normative act, but it is an international treaty outside the EU law whose provisions are binding on the member states that have signed this treaty. The article also presents a seeking for budgetary coherence within the European Union member states and then it presents an evolution of budgetary discipline of member states. The main aim of the article is to confirm or disprove the hypothesis that the compliance with the binding mechanisms of the budgetary discipline of the member states introduced after 2010 is always well enforceable. The scientific methods used in the article are analysis and synthesis, description and comparative methods.