The PKO Bank Polski SA Group strengthens its position as the leader of Polish banking, offering services to retail as well as institutional customers for 97 years.
| 1919-1938 | 1. | Pocztowa Kasa Oszczędności was established through a decree signed by the Head of the country Józef Piłsudski, prime minister Ignacy Paderewski and Hubert Linde – founder and the first president. |
| 2. | Pocztowa Kasa Oszczędności vested with legal personality as a state institution, operating under the supervision and with guarantee of the State. | |
| 3. | First local branch of Pocztowa Kasa Oszczędności was founded in Poznań. | |
| 4. | Pocztowa Kasa Oszczędności started to run School Savings Unions (Szkolne Kasy Oszczędności). | |
| 5. | With the initiative of Pocztowa Kasa Oszczędności, Treasury Ministry has decided to set up Bank Polska Kasa Opieki (today Pekao SA) as a public company to facilitate the Polish Diaspora the transfer of Polish foreign currencies to the country. | |
| 6. | Pocztowa Kasa Oszczędności strongly contributed to the development of non-cash transactions - every other larger industrial plant and any large company had a cheque account in Pocztowa Kasa Oszczędności, and cheque turnover in Poland was half as much greater than the cash. | |
| 1939-1945 | Years of war were time of huge losses and standstill in the activity of Pocztowa Kasa Oszczędności | |
| 1949-1988 | 1. | Pocztowa Kasa Oszczędności transformed into Powszechna Kasa Oszczędności. |
| 2. | Banking Act introduced privilege of saving deposits held in Powszechna Kasa Oszczędności, they were covered by the State guarantee. | |
| 3. | Powszechna Kasa Oszczędności introduced a modern product: current account. | |
| 4. | Powszechna Kasa Oszczędności merged into the structures of the National Bank of Poland (NBP); yet retains its identity (1975). | |
| 5. | Powszechna Kasa Oszczędności was separated from the National Bank of Poland (1988). | |
| 1991-2000 | 1. | The first PKO Ekspress card was released, it served only to withdraw a cash from ATMs. |
| 2. | The Memorandum of Association granted to Bank by the Council of Ministers included a modified name of Powszechna Kasa Oszczędności - Bank Państwowy (a state bank); PKO BP SA in the short form. The first Supervisory Board of PKO Bank Polski SA was appointed. | |
| 3. | ZORBA3000 the department information system was implemented, it has automated the banking operations performed in the branch. | |
| 4. | The first Internet information portal of the Bank and the first e-PKO Internet branch were launched. | |
| 5. | In 2000 the Bank was transformed into a wholly-owned subsidiary of the State Treasury under the name of PKO Bank Polski SA | |
| 2004-2009 | 1. | In 2004 Bank’s flotation took place - at the end of the first day of quotations, shares reached a price of PLN 24.50 per unit against the issue price fixed at PLN 20.50. |
| 2. | The implementation of the Bank's integrated Information system network O-ZSI has been completed. | |
| 3. | Successful rights issue of 250 000 000 D series shares was conducted within public offering, which resulted in the Bank’s share capital increase from PLN 1 000 000 000 to PLN 1 250 000 000 (2009). | |
| 2010-2014 | 1. | PKO Bank Polski SA (through its subsidiary PKO Finance AB) issued 5-year Eurobonds with value of EUR 800 million and bonds to the American market in the amount of USD 1.0 billion, which became benchmark securities not only for Polish entities but also for issuers in Central and Eastern Europe. |
| 2. | Strategy for the years 2013-2015 ‘PKO Bank Polski. Daily the best’, which assumptions will help to strengthen the position of the Group as a leader in key market segments was approved. | |
| 3. | PKO Bank Polski SA set a new standard for mobile payments - IKO - the innovative solution for the mobile payments market | |
| 4. | PKO Bank Polski SA has signed with EVO Payments International Acquisition GmbH an agreement for twenty-year strategic alliance in the electronic payment market and therefore sold a significant portion of shares in eService Sp. z o.o. | |
| 5. | PKO Bank Hipoteczny was established, which will offer long-term mortgage loans to retail customers and will issue mortgage bonds after obtaining permission from the Polish Financial Supervision Authority. | |
| 6. | PKO Bank Polski SA acquired shares of Nordea Bank Polska SA, “Nordea Polska Towarzystwo Ubezpieczeń na Życie SA” and Nordea Finance Polska SA, and debt portfolio of corporate clients. In October the legal merger of banks took place. | |
| 2015 | 1. | Establishment of PKO Bank Hipoteczny SA in order to ensure the safe financial structure of long-term mortgage loans portfolio |
| 2. | Expansion into foreign markets through actions aimed to establish the first foreign corporate branch of PKO Bank Polski SA in Frankfurt am Main | |
| 3. | Completion of the merger process of the Bank with Nordea Bank Polska SA. Integration with Nordea Bank Polska SA was the fastest merger in Poland, which proved high operational efficiency of the Bank and high competence throughout organization. | |
| 4. | Establishment of PKO Towarzystwo Ubezpieczeń SA, which offers services of property insurance to retail clients of PKO Bank Polski SA. | |
| 5. | Start-up of Bank’s new payment system BLIK (based on IKO application), which became the market standard |