Objectives: The purpose of the analysis is to examine the changes taking place in the proven central banking model in Poland in terms of law and in terms of changing the level of security for financial market stability in Poland, in particular the banking sector in Poland. Material and methods: Research methods used in the article are characteristic for social sciences: from typically legal methods, such as analysis of legal regulations and doctrines, which make up a full understanding of law, through analysis of financial data published by financial institutions, up to analysis of press statements to show the latest legal and factual status. Legal-dogmatic methods and data analysis were supported by the descriptive method, which contributed to the conclusions summarizing the study. The author based on current, official data published on institutions’ websites. Results: The results obtained lead us to know much better about functioning banking system in Poland and the position of the National Bank of Poland.