Core CPI Overshoot to 2.5% Locks in ECB's Hawkish Path

Eurozone inflation data for May removed the last doubt about a June rate hike. Headline CPI came in at 3.2% year-over-year, in line with the consensus after a 3.0% prior reading. The real shift was in the core measure. Core CPI, which strips out energy, food, alcohol, and tobacco, accelerated from 2.2% to 2.5% yoy, beating the 2.4% consensus by 0.1 percentage point. For a central bank that has spent weeks debating whether energy-driven inflation is embedding into broader price-setting, that overshoot carries more weight than the headline number.

The composition of the report explains why. Energy inflation ticked slightly higher to 10.9% from 10.8%, still the largest single contributor. The bigger concern is services inflation, which jumped from 3.0% to 3.5% yoy. That is the domestic transmission channel: when services costs rise faster than goods excluding energy, it signals wage pressures and pricing power are building into the economic fabric. By contrast, food, alcohol, and tobacco inflation slowed to 2.0% from 2.4%, providing a partial offset. The net picture, however, is one of sticky underlying pressures that the ECB cannot easily dismiss.

Core CPI Overrun and Services Inflation Signal Sticky Pressures

ECB officials including Isabel Schnabel have argued that the central bank can no longer look through energy-driven inflation if those costs feed into broader price-setting behavior. The May services reading validates that concern directly. The 0.5 percentage point acceleration in services – the fastest pace in months – suggests cost pass-through is becoming entrenched in sectors most tied to domestic demand and labour costs. This data lands just a week before the June policy meeting, giving the hawks concrete evidence to push back against any talk of a pause.

A 25-basis-point hike next week is now a near certainty. Markets had already priced it. The core CPI beat reduces the probability that the ECB issues soft forward guidance hinting at a pause. The September path remains the open variable. If core inflation stays above 2.5% in the July print and services inflation does not cool, the ECB will have to keep the door open to further tightening. That uncertainty matters for the euro's rate differential against the dollar and the pound.