Subject and purpose of work: The aim of the article is to present selected aspects of the digitization process of the banking sector in Poland, including the role of the digital channel in the sale of banking products. Materials and methods: The research is of comparative character and is based on data from the financial website PRNews.pl, NBP, KNF and the ECB Bank. Results: Mobile banking in Poland is highly concentrated. In 2016-2019, the five largest banks serviced 82% of all mobile banking customers, and their number increased by 27% annually. Conclusions: Digitization simplifies the process of obtaining and processing information and contributes to reducing operating costs. However it also forces banks to prepare appropriate security and implement costly technological investments. It increases the availability and quality of banking services, and moves customer service from banking branches to the digital channel. Additionally it contributes to reducing the network of branches and the number of employees employed in them.