Poland: the inflation rebound delays the rate cut and bites the bank margin

Poland's inflation rebound to 3.0% in March 2026, an eight-month high, postpones the rate-cut path of the Polish central bank (Narodowy Bank Polski, NBP) and weakens the central argument behind Polish bank positions: the interest-margin annuity that justifies an 18-20% return on equity. The NBP explicitly shifted to a wait-and-see stance last month, holding the policy rate at 3.75%. For Central and Eastern European (CEE) asset holders, who watched the Polish banking sector (WIG-Banki index) advance roughly 30% over twelve months 6 under the anticipated rate-cutting cycle, the easing scenario is no longer the one-way bet it appeared a quarter ago.

The mechanism is documented. The energy shock from Iranian tensions drove Polish inflation indicators up half a point in a single month, from 2.5% in February to 3.0% in March, and that incremental cost is now feeding wholesale prices. Hungary's central bank held its rate at 6.25%, expecting full transmission of the oil-price overhead by Q2. Most importantly, the World Bank lowered its 2026 growth forecast for Central Europe to 2.4%, citing the Middle East conflict's energy cost explicitly 3.

The objection deserves consideration. PKO and Pekao, Poland's two largest banks (which together weigh approximately 24% of the WIG20 blue-chip index of the Warsaw Stock Exchange 8), base their earnings on fixed-rate assets and cheap deposits; even a full one-point compression of the interest margin leaves them above 14% return on equity, still well ahead of the European average. PKO's record 2025 net profit (PLN 10.7 billion, +14.8%; 19.5% return on equity) 49 was built before the first rate cut, not because of it. Diversification keeps strengthening: the Polish banking consortium deployed around the European rearmament loan facility (Security Action for Europe, SAFE), under which Poland secured a €44 billion envelope 5, and the financing of large public infrastructure projects bring revenues largely independent of the monetary cycle.

Portfolio implication. The cyclical inflation rebound delays the CEE banking re-rating by roughly six months without breaking it. Valuations remain attractive. On forward earnings, PKO trades around 8x earnings, with a dividend yield of around 6-7% 12; Pekao trades a bit higher, around 12x, but posts a 21.4% return on equity in 2025 10. At multiples comparable to those of the European banking sector, Polish banks display a return on equity roughly twice as high as the European sector average (~11% per the EBA, end-2025 11), which translates, at equal multiple, into a significant discount on the value of their equity. This is the valuation anomaly the Raiffeisen fund captures, by overweighting Poland relative to its modest weight in broad emerging-markets indices (dominated by China, India and Taiwan). Three milestones to watch in the coming weeks: the NBP decision on May 8, Poland's April CPI print, and Pekao's first Q1 2026 net interest margin guidance (released April 30).