Inflation in the eurozone accelerated to 4.0% in October, its highest level in three years, Eurostat‘s flash estimate showed on Wednesday. The figure, up from 3.8% in September and in line with economists’ expectations, puts price growth at double the European Central Bank’s 2% target — and strengthens the case for another interest-rate rise in December.
Energy did almost all of the damage. Energy inflation jumped to 20.8% year on year, up from 18.9% in September and its highest since December 2022, as the war in the Middle East kept pushing up the cost of the oil and gas Europe must import. Services inflation, the largest single item in the consumer basket, picked up to 3.3% from 3.2%. Unprocessed food prices rose 4.6%, up from 4.0%.
The number that should worry Frankfurt least, and the one it will watch closest, is core inflation — which strips out volatile energy, food, alcohol and tobacco prices. It held steady at 2.5%, in line with expectations. That steadiness is the ECB’s best argument that the energy shock has not yet infected the whole economy. It is also fragile: expensive diesel and natural gas seep into the price of almost everything else, from transport to manufacturing, and those indirect effects take months to show up. For the mechanics of that pass-through, see why diesel costs more than petrol.
The pain is unevenly spread across the 21 countries that share the euro. Lithuania recorded the hottest rate at 6.1%, while Malta’s was the lowest at 2.3% — but every member state sat above the ECB’s 2% target. Belgium came in at 5.2%. For households heading into winter, the abstract rate translates into heating bills, fuel prices and grocery receipts that are all rising faster than wages in much of the bloc.
The ECB kept its key interest rate at 2.5% last month, following a 25-basis-point rise in September. October’s reading, and the expectation that inflation will stay above 4% for much of the first half of 2027 before falling back, has firmed up market bets on a December rise. ING economist Carsten Brzeski said the headline figure was “clearly higher” than the ECB’s September baseline scenario — a gloomier backdrop than the IMF’s recent growth upgrade suggested.
Why this matters beyond Europe. The eurozone is the world’s second-largest economy and a major importer of energy; when its inflation runs hot, its central bank tightens, its currency firms, and borrowing costs rise for governments and companies far beyond its borders. The deeper question is whether this is a passing energy spike or the start of a second round of price rises. Core inflation says not yet. Energy prices say the pressure is still building. December’s ECB meeting will have to choose which signal to believe.
