The NBP's own March projection assumed CPI would stay above the 3.5% upper band through the end of 2026, pushed up by the expiry of the fuel-price cap, before returning to the 2.5% target only in mid-2027. An October print landing exactly at that upper boundary sits below where the Council's working assumption placed it. One wire frames the fall as helped by CPN, a reference to fuel-related pricing. Whether that is a temporary base effect or a genuine turn in the broader disinflation path is exactly the question the Council has five days to resolve before it votes.#

The złoty has barely moved. EUR/PLN trades at 4.3952 intraday on 30 October 2026, down 0.11% on the session, up 0.47% over five sessions and up 0.76% over the month. That is not a market repricing a shift in cutting expectations. It is a currency sitting roughly where it has sat all month, and that stillness tells its own story. A softer inflation print that genuinely opened the door to faster cuts would typically weigh on EUR/PLN ahead of the decision. It has not, at least not yet.#

An October print at the NBP's own upper tolerance band leaves the Council room to call the reading a one-off before it touches a rate it cut as recently as March.#

Warsaw's rate-sensitive banks are not reading it as a cutting signal either. WIG-BANKI rose 1.96% on 29 October 2026 to 28,276.04, extending a five-session gain of 3.92% since 21 October. That stretch has run alongside mBank's record quarter and Pekao's profit miss, not any dovish shift in rate expectations. If the bank rally were pricing a faster cutting cycle, it would be unusual company: a steeper path down would compress the net interest margins that have driven the sector's recent earnings dispersion, not support them further.#

The NBP's own March projection predates the June fuel-cap expiry and whatever supply shock research previews have flagged for the Middle East. The bank's July projection round is expected to show a materially higher CPI path through mid-2027. That means the 3.5% flash print is being read against a baseline the central bank itself has already signalled it intends to revise upward. What the 4 November decision actually tests is whether the Council treats one flash reading as enough evidence to act, or waits for the confirmed figure and the updated projection round before it moves. A hold on 4 November with language citing the fuel-cap base effect would signal the Council reads this print as the projection does: temporary. A cut, or language flagging a faster return to target, would mean the Council is treating the October surprise as the start of a trend the March path did not anticipate.#