The aim of the study is to analyze the direct and indirect consequences of the COVID-19 pandemic for the Polish banking sector. We analyzed activities aimed at maintaining the banking sector’s ability to finance the economy undertaken by the government, central bank, banking supervision, and banks in Poland, as well as assessed the financial situation of the banking sector in the period preceding Covid-19 and shortly thereafter. We found that anti-crisis measures and interventions were reflected in the financial situation of banks in the first month of their introduction, among others, by a rise in write-offs for provisions for receivables, an increase in other operating costs, or a significant decrease in receivables from debt instruments. The latter being due to the central bank providing additional liquidity to banks. Unfortunately, contrary to the expectations for increased credit availability, banks tightened their lending policy and focused mainly on financing their existing clients who had only temporary financial problems caused by COVID-19. One possible explanation for this is a lack of financial incentives for banks that neutralize an increase in risk and operating costs amid the pandemic (e.g. fiscal), despite the existence of such preferences for Treasury securities.