This paper analyses the special administrative procedure under the jurisdiction of the Commission for Conflict of Interest Resolution in the Republic of Croatia. The emphasis is on the changes introduced by the new Law on Prevention of Conflict of Interest from 2021, comparing it with the old law. Conflict of interest is defined as a situation where the private interests of a duty bearer influence or could influence the impartial performance of public duties. The paper presents the types of conflicts of interest (real, possible and apparent) and their consequences, including corruption. The new law expands the scope of obligated persons, increases transparency through more detailed asset declarations, and strengthens the Commission's powers, enabling stricter sanctions for non-compliance with legal provisions. Despite these advantages, the increased administrative burden on the Commission and resistance among obligated persons present challenges. The paper also analyses the procedure before the Commission, before and after 2021. The new law introduces stricter deadlines, more detailed procedures, and rules for the exclusion of Commission members, ensuring more effective legal protection and greater transparency. The introduction of the public announcement of decisions further increases the Commission's accountability. Ultimately, it can be said that the paper emphasizes the importance of preventing conflicts of interest in order to preserve the integrity and trust of citizens in public institutions. The new Law on Prevention of Conflict of Interest is a significant step forward in the fight against corruption and in improving transparency in public administration.