Lasting for over a year the global crisis in financial markets, affected individual countries’ banking systems to a different degree. The present article discusses the phenomenon and its effects on the Polish banking system. The aim of the article is to present trends, the scale of the crisis and the current level of danger to stability of domestic financial market. The result of the research is a synthetic estimation of the level of the financial sector stability, taking into account the risks to solvency, liquidity, profitability, and quality loan portfolio and changes in deposits.