ECB set to hike to 2.50% as Iran oil sends eurozone inflation to 3.3%

The European Central Bank is poised to raise its deposit rate to 2.50 percent, with markets pricing the move at near-total certainty after a summer of accelerating inflation across the eurozone. The decision would mark the second rate increase in three months — a pace that reflects both the urgency of the numbers and the growing tension within the governing council over whether the instrument being used fits the problem at hand.

Almost none of that inflation is demand-driven — the kind that central-bank rate hikes are designed to address. Energy prices across the eurozone rose 14.3 percent year-over-year in the most recent monthly reading, the dominant driver of a headline rate that reached 3.3 percent — the highest level since autumn 2023. Core inflation, stripping out food and energy, is actually easing. What is rising is the cost of oil and gas, and the cause is the ongoing conflict in the Middle East.

Since hostilities involving Iran intensified earlier this year, crude prices have climbed sharply on supply disruption fears, with the IEA describing the situation as among the largest supply disruptions in recent history. The euro-denominated energy bill has been further amplified by the currency’s underperformance against the dollar — a consequence of the interest-rate differential between the Federal Reserve’s prolonged hold and the ECB’s relative hesitation. When oil prices rise in dollars and the euro weakens simultaneously, eurozone energy inflation is essentially multiplied.

The paradox the governing council now faces is not lost on economists. Lifting the deposit rate to 2.50 percent will raise borrowing costs for euro-area households with variable-rate mortgages, increase business lending rates, and dampen consumer spending. All of that reduces demand. None of it adds a single barrel of oil to the European market. Critics of the expected move argue the ECB is inflicting economic pain on families and small businesses to fight a price problem that originates in geopolitical decisions entirely outside monetary policy’s reach.

Inside the council, the divide is real. The hawkish camp — led by northern European members still focused on credibility after the 2022 inflation episode — argues the bank must act on the headline number it can see, not the core number it hopes will moderate. If it holds with inflation at 3.3 percent, it risks the kind of expectations drift that made the Fed’s position so difficult in 2022 and 2023. The doves counter that hiking now risks tipping a slowing eurozone economy into contraction at precisely the moment households are squeezed by energy costs from both directions.

For European borrowers, the decision lands at a difficult moment. Variable-rate mortgage holders — most prevalent in southern Europe — face an immediate cost increase. Companies reliant on revolving credit will see financing costs edge higher. Consumers who were beginning to return to discretionary spending face fresh pressure on disposable income from two directions simultaneously: the energy bills and the loan repayments.

Christine Lagarde is expected to address the governing council’s reasoning at the press conference Thursday, including whether she signals further hikes or introduces a conditional hold for October. Investor attention will then shift almost immediately to the Federal Reserve’s decision the following week, where market pricing puts a 25-basis-point hike at roughly 56 percent — a figure that has risen with each escalation of Middle East tensions.

Tags: interest rates, ECB, European Central Bank, eurozone inflation, Iran war