The European Central Bank has a new headache, and it smells like crude oil. The ongoing Iran conflict, triggered by US and Israeli military strikes on February 28, has pushed oil prices above $120 per barrel, and the ECB is now openly warning that the war could lift medium-term inflation expectations across the euro area.

The numbers tell the story

The ECB’s SAFE survey, conducted between February 19 and April 1, captured the shift in real time. Firms across the euro area raised their one-year inflation expectations from 2.5% to 3.0%. That half-percentage-point jump might look modest on paper, but in central banking terms, it’s the equivalent of a fire alarm going off in a library.

Medium- to long-term expectations, for now, remain stable. That distinction matters enormously. If businesses start pricing in persistently higher inflation over five or ten years, the ECB’s entire policy framework gets significantly more complicated.

The Harmonized Index of Consumer Prices, the ECB’s preferred inflation gauge, hit 3% in April 2026. Energy prices were the primary culprit. The ECB had already revised its euro-area inflation forecast for 2026 to 2.6%, but actual readings are already overshooting that number.

Why the ECB is stuck

Through its April 2026 meetings, the bank held rates steady, citing upside inflation risks as the reason for caution. Raising rates would help contain inflation expectations but risk choking an economy already absorbing a massive energy price shock. Cutting rates would support growth but potentially signal that the ECB isn’t serious about its 2% inflation target.

The ECB has signaled willingness to intervene if conditions deteriorate further, without committing to any specific action. The problem with waiting is that inflation expectations can become self-fulfilling. When businesses expect higher prices, they raise their own prices preemptively. Workers demand higher wages. The SAFE survey data suggests the early stages may already be underway.

What this means for investors

The ECB has made no direct references to cryptocurrencies or digital assets in its recent communications. Bitcoin and other risk assets have historically shown increased volatility during periods of elevated inflation uncertainty, and this environment checks every box for that pattern.

If the HICP keeps climbing above 3% and firm-level expectations start bleeding into medium-term forecasts, a rate hike becomes a real possibility, even in the face of an energy-driven economic slowdown. Traders should watch two things closely: the next round of ECB survey data on inflation expectations, and Brent crude prices. If expectations continue drifting higher while oil stays above $120, the window for the ECB to remain on hold narrows considerably.