Banking system in Poland is an example of the branch with a very rapid change. It is noticeable even on a monthly basis. In relation to banking system created after the change of economic system in the early nineties – change is revolutionary. Another system, other banks, other products, other distribution channels, a different approach to the customer of the bank, different expectations of clients. These changes are the result of innovations. Over the past twenty-five years, Poland changed as well the form of money. Central bank denominated the currency unit, but most importantly – banknotes and coins were replaced by an electronic record. Money is needed for the functioning of modern economies, but it’s hard to imagine the current functioning market economy with money in the form of two decades ago. Changes mentioned aboce are the result of innovation in banking. The banking system in Poland, with its products, processes, distribution channels and customer approach is at the forefront of the world. Not only managers of Polish banks find a place of employment in the West, but the procedures, which had its origins in Poland are used in many countries. The intention of introducing innovative instruments is not only meet the expectations of the customer but above all reducing costs and risks. This study aims to analyze the safety of the banking system, in which innovations arise in individual banks. The purpose of innovation is to bring products to the needs of customers, but these products are becoming commonplace. In this case, despite the positive result of use by individual banks stress tests, can be a threat to the security of the entire financial system of the state. An example would be the financial crisis in the first decade of the twenty-first century. Subprime mortgage loans, credit default swaps, structured investment vehicles, and other more-recently developed financial products have become emblematic of our present financial crisis, as a result of which some banks have ceased to exist and others needed the huge sums for staying alive.