⚠ Twenty-Nine Banks Are Bidding for the Same SaverModerate threat

PKO Bank Polski (PKO) — threat to the moat

Twenty-nine licensed banks and a fintech field means the price of a deposit is set by whoever is most desperate for one.

PKO is the biggest bank in the country and holds roughly 15% of sector assets, in a market with 29 banks operating1.

The Polish deposit market29banks operating~15%PKO share ofsector assets1,80%average costof deposits460,7bn złPKO depositsThe price of a deposit is set by whichever of 29 banks is most desperate for one
Twenty-nine licensed banks for 37 million people. Nobody has to beat PKO to take a saver - they only have to pay more for a year.

That single fact bounds everything on this page. A deposit franchise with 15% share is a leading position, not a controlling one, and it means PKO sets its deposit rates with reference to what everyone else is offering rather than to what it would like to pay. Five other institutions are large enough to matter, and any of them can buy deposits by paying up for a quarter.

Fragmentation also means the sector consolidates in ways PKO does not control. In January 2026 Erste Group acquired a 49% controlling stake in Santander Bank Polska, and in April the bank was renamed Erste Bank Polska2 — the third-largest bank in the country changed owner without PKO being party to it.

Share moves slowly in retail banking, and that is the defence. Customers do not switch, so the distribution of accounts today largely determines the distribution in five years.

Nothing in the numbers suggests erosion: deposits grew 12,9% in the first half of 20263 and customer numbers reached 12,6 million.

The measure is PKO's share of sector deposits rather than its absolute growth. Growing at the market rate is holding position; growing below it, in a market where nobody switches, is losing a franchise slowly enough not to notice.

References
  1. Third-party estimatePKO is the biggest bank in the country and holds roughly 15% of sector assets, in a market with 29 banks operating.
    Polish banking sector structure, 2026 - 29 banks operating, PKO the largest with about 15% of sector assets, and Erste Group's acquisition of a 49% controlling stake in Santander Bank Polska in January 2026 with the bank renamed Erste Bank Polska in April — 2026 · publ. 2026 · source ↗
  2. Third-party estimateIn January 2026 Erste Group acquired a 49% controlling stake in Santander Bank Polska, and in April the bank was renamed Erste Bank Polska — the third-largest bank in the country changed owner without PKO being party to it.
    Polish banking sector structure, 2026 - 29 banks operating, PKO the largest with about 15% of sector assets, and Erste Group's acquisition of a 49% controlling stake in Santander Bank Polska in January 2026 with the bank renamed Erste Bank Polska in April — 2026 · publ. 2026 · source ↗
  3. ReportedNothing in the numbers suggests erosion: deposits grew 12,9% in the first half of 2026 and customer numbers reached 12,6 million.
    PKO Bank Polski S.A. Group Directors' Report for the six months ended 30 June 2026, published with reviewed financial statements (profit before tax of 8 319m złoty up 19,9%, income tax of 3 029m up 67,4%, net profit of 5 290m up 3,1%, return on equity of 19,3%, cost-to-income of 31,4%, interest margin of 4,47% against 4,91%, cost of risk of 0,29%, total assets past 608 448m, 12,6 million customers, common equity tier 1 of 15,55%, and a further 685m złoty of convertible-currency legal risk) — H1 2026 · publ. 13 August 2026 · source ↗
Sources
Generated September 24, 2026