Eurozone Inflation Accelerates to 3.8% in September, Surpassing Economist Forecasts

Eurozone inflation accelerated to 3.8% in September, marking a three-year high and exceeding economist forecasts of 3.6%, according to Eurostat. The jump from 3.2% in August marks the seventh straight month that prices have climbed above the European Central Bank's 2% target. Energy costs, driven by Middle East conflict disruptions to oil and natural gas supplies, were the primary culprit behind the surge.
The acceleration is forcing the ECB to weigh whether to raise interest rates again. Core inflation—which strips out volatile food and energy—rose to 2.5%, signaling that high energy costs may be starting to feed into broader price pressures on services and wages. ING chief economist Bert Colijn called the print an "Ouch," warning that persistent energy costs threaten to embed inflation more durably across the economy.
The escalating conflict between the United States and Iran has disrupted global oil and natural gas supplies, particularly through critical shipping routes like the Strait of Hormuz. Yahoo Finance reported that energy prices spiked sharply in September, with fuel and natural gas costs climbing faster than any other category. This mirrors the supply shocks seen during the 2022 Russia-Ukraine war and is driving headline inflation to levels not seen since September 2023.
While energy is the main driver, core inflation rising to 2.5%—up from 2.4% in August—suggests higher prices are spreading beyond fuel and food. Arise TV noted that services prices have become firmer across the eurozone. ECB Executive Board Member Isabel Schnabel has pushed for "pre-emptive" rate hikes to prevent energy shocks from triggering second-round wage and price spirals that would be harder to control later.
Financial markets are pricing in a roughly 70–80% probability of an interest rate increase by December and up to three further hikes over the next year, according to trading data. Centre for Economics and Business Research economist Alex Nairn warned that the direction of underlying inflation increases the odds of an ECB rate move as early as October. Meanwhile, ECB President Christine Lagarde has signaled caution, arguing that elevated bond yields naturally tighten financial conditions and limit spillovers from energy shocks.
Flash data from major economies shows wide variation: Spain hit 5.0%, Italy 4.1%, and France 3.4%. Deutsche Bank Research economist Sebastian Becker noted that localized measures—such as Germany's fuel tax adjustments—may trim roughly 0.2 percentage points off domestic readings, but cannot offset the bloc-wide energy trend. J.P. Morgan highlighted that both energy and food prices surprised upward in nearly every reporting member state.
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