Eurozone inflation jumps to 2.5% as Iran war drives energy costs higher

Eurozone inflation surged to 2.5% in March, its highest level in more than a year, as the war against Iran sent oil and gas prices climbing through a blocked Strait of Hormuz. The Eurostat flash estimate, released on 31 March, showed consumer prices rising 1.2% on the month alone, a pace that, if sustained, would push annual inflation well above the European Central Bank's 2% target within weeks.

Energy prices do the heavy lifting

The headline jump was entirely an energy story. Fuel retailers passed through higher wholesale costs to drivers almost immediately, while core inflation, the measure that strips out volatile energy and food, actually eased a fraction. That divergence matters. It tells the ECB's Governing Council that the shock is, for now, a supply-side event: a geopolitical disruption to the world's most important oil chokepoint, not a broad-based loss of price discipline across the economy.

Berenberg Bank analyst Felix Schmidt calculates that inflation will peak above 3% in the coming months on the current trajectory. If the conflict escalates, if, for instance, Iranian retaliation targets Gulf export infrastructure directly, he sees a plausible path to "well above 4%." The mechanism is straightforward: the longer oil and gas stay expensive, the more their cost feeds into transport, plastics, fertiliser and ultimately the price of almost everything that moves or is manufactured.

The ECB's supply-side dilemma

Christine Lagarde and her colleagues have spent weeks preparing markets for exactly this scenario. In speeches and interviews since the conflict intensified, the ECB's top management has repeated a consistent line: the Bank will not rush to raise interest rates in response to supply shocks over which it has no control. Higher borrowing costs cannot reopen the Strait of Hormuz or increase global oil output. What they can do is compound the drag on an economy already paying more for every litre of diesel and cubic metre of gas.

That stance carries risks of its own. The ECB's own monthly survey of professional forecasters, published in early March, showed expectations for 2026 inflation creeping up even before the latest spike. More troubling, the European Commission's business survey released on Monday recorded a sharp increase in the share of companies planning to raise their own prices over the next twelve months. If firms treat the energy shock as cover for wider margin reconstruction, the supply shock becomes a demand-driven inflationary spiral, precisely the outcome the ECB's mandate exists to prevent.

Wage pressures and the memory of 2022

The second trigger for ECB action would be a surge in wage claims. So far, negotiated wage growth in the euro area has been moderating from its 2023 peak, but unions in several countries have cited the new energy spike in recent pay talks. Lagarde's warning last week was deliberate: "An entire generation has now lived through its first episode of high inflation. It may not be as slow to react a second time." The 2022, 23 episode, when inflation peaked at 10.6% after Russia's full-scale invasion of Ukraine, rewired inflation expectations in a way that standard models struggle to capture. Households and firms that lived through it once are less likely to treat a new spike as transitory.

Governments caught between voters and budgets

National capitals face a parallel dilemma. In 2022, Germany, France, Italy and Spain deployed price caps, lump-sum transfers and tax cuts worth well over 2% of euro-area GDP combined. This time, the fiscal arithmetic is harsher. The EU's general escape clause, which suspended the Stability and Growth Pact during the pandemic and the first energy crisis, has expired. Deficit procedures are active against France, Italy and several others. Debt servicing costs have risen alongside the ECB's rate hikes of 2022, 24. Few finance ministers have room for another round of blanket subsidies.

Philip Lane made the point bluntly in an interview with RTÉ on Monday: "The political system has to focus on those who are most in need, rather than following a median voter approach to try and target a larger group of people in the population." Targeted income support is cheaper and less inflationary than universal price caps, but it is also politically harder to sell to a middle class that feels the squeeze just as acutely.

Market pricing and the April 30 meeting

Money markets currently price the ECB's deposit facility rate staying at 2% at the 30 April Governing Council meeting, where it has sat since June 2025, after a cycle that took it from -0.5% to 4% and back down again. But forward curves imply at least one 25 basis-point hike before year-end, conditional on the conflict persisting. The ECB's own staff projections, due for update in June, will almost certainly revise the 2026 inflation forecast above the 2.1% seen in the March macroeconomic projections.

The Strait of Hormuz factor

The geopolitical backdrop is distinct from 2022. Then, the shock was a sudden loss of Russian pipeline gas to Europe, a supply curve that could be, and eventually was, partially replaced by liquefied natural gas imports and demand destruction. Today's shock is maritime. The Strait of Hormuz handles roughly 20% of global oil consumption and a third of seaborne LNG. Insurance rates for tankers have tripled since hostilities began; several major shipping lines have rerouted around the Cape of Good Hope, adding two weeks to Asia-Europe voyages. That logistics cost is now embedded in every imported good, not just energy.

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