The pandemic in the world has affected almost all sectors to a greater or lesser extent. The corona crisis had a certain negative impact on the banking sector, which has a special role in the economic recovery, so the impact of the crisis on this sector proved to be suitable for consideration. The problem of the research of the diploma thesis was the impact of the corona crisis on the business and financial success of two Croatian banks. On the other hand, the subject of the research was the analysis of the operations of two Croatian competing banks in the last three years in order to determine the impact of the corona crisis on them. In doing so, the analysis itself was based on their financial statements, from which the financial and synthetic performance indicators of the two banks were derived; Zagrebačke banka d.d. and Privredna banka Zagreb d.d. This was the basis for understanding the impact of the crisis on the banking sector in the Republic of Croatia. Taking this into account, the paper first pointed out the high efficiency of the Croatian banking sector in the pre-crisis period, when 20 banks in the Republic of Croatia employed more than 20,000 people. Observations of the two banks showed that both banks operated efficiently in all the observed years, but their liquidity decreased. Also, it turned out that the static indebtedness of both banks had a very slight downward trend in the observed period, and the indicator of total return on equity decreased in both banks in 2020 due to reduced earnings per share, ie total net profit. Finally, it turned out that in the case of both banks there was an increase in assets and liabilities in the observed period, and in both banks there was a sharp decline in profits in 2020.