In this thesis the author made an in depth analysis of legislation in Croatian and European procedural law regarding the payment order. The first part of the thesis is dedicated to the definition and categorization of the payment order, mostly regarding the procedural legislation in the Croatian " Civil Procedure Act ". Moving on, the thesis covers the main procedure regarding adoption of the payment order. Completing the first part of the thesis, the author lists the legal remedies available to dispute the payment order and the significance of the payment order in enforcement proceedings. The second part of the thesis is dedicated to the European payment order. Starting with the genesis of the European payment order, the author wanted to emphasize the significance of its development. Expanding the topic further, the author analyzes the purpose and the procedure of issuing payment orders, and the legal remedies by which the payment order can be disputed. The author concludes the section by disclosing the payment order's legal enforceability. In continuation, the author examines the enforceability of the payment order in non member states. The next section of the thesis is dedicated to the overview of the regulation legislated by the Croatian "Zakon o parničnom postupku" and "Pravilnik o načinu podnošenja zahtjeva za izdavanje europskog platnog naloga i prigovora protiv europskog platnog naloga" and the implications the European payment order has within the Croatian legal system. To tie the topic off, the author conducts an overview of the jurisprudence regarding the issues covered in the thesis. The thesis is comprised of eight sections. In the process of its creation, the author wrote the thesis in alignment with Croatian and European legislation.