Renewed hostilities between the U.S. and Iran in the Strait of Hormuz have reignited concerns over rising oil prices and added complexity to the European Central Bank's (ECB) upcoming interest rate decision scheduled for July 22. The recent spike in oil prices has undermined previous market expectations for a pause in rate hikes, prompting ECB officials to adopt a cautiously vigilant monetary policy stance. Bundesbank President Joachim Nagel emphasized the ongoing volatility and uncertainty, suggesting that the ECB must carefully balance caution with the need for decisive action if necessary.

Earlier in 2026, the ECB had trimmed its key deposit rate four times from 3% to 2%, but the surge in energy prices last month forced a reversal, leading to a 25 basis point increase in June to 2.25%. Inflation in the eurozone has jumped, peaking at 3.2% in May due to rising energy costs, though recent data indicates a slight easing to 2.8% in June. Despite this, the sharp rise in oil prices this week above $85 per barrel—up from around $70 just last week—has raised concerns about potential inflationary pressures, especially as the eurozone remains heavily dependent on energy imports, supplying over half of its needs from abroad.

Economic policymakers are navigating the challenge of deciding on rate moves without the latest inflation and GDP data, which will only be released after the ECB’s July meeting. Analysts from ING warn that eurozone inflation might not have peaked yet, especially if energy costs continue to climb, which contrasts with the loosening inflation momentum in the U.S. Markets currently assign only about a 20% chance of a rate hike next week, but anticipate further increases to bring the deposit rate to 2.75% by next spring, reflecting ongoing concern about inflation risks.

Austrian central bank chief Martin Kocher highlighted the importance of monitoring secondary inflation impacts from the Middle East conflict. Although there are no clear signs of such second-round effects yet, monetary policy must remain aligned with inflation expectations to avoid destabilizing the eurozone economy, which already contracted slightly in the first quarter of 2026. The ECB faces a critical balancing act between supporting economic growth and controlling inflation amid geopolitical tensions and volatile energy markets.