Euro zone inflation reaches 4% as interest rate hike looms

The annual inflation rate in the euro zone climbed to 4.0% in October 2026, marking the first time the region has hit or exceeded that threshold in three years. The figure represents an increase from the 3.8% recorded in September, according to data released on Nov. 4, 2026.

Energy costs served as the primary driver for the rise, with energy inflation surging to 20.8% in October, up from 18.9% the previous month. This increase is linked to ongoing geopolitical tensions involving the United States and Iran. Meanwhile, core inflation, which excludes volatile food and energy prices, remained stable at 2.5%.

The European Central Bank, which maintains an inflation target of 2%, kept its benchmark interest rate at 2.5% during its late October meeting. However, following the latest data, policymakers including Bundesbank President Joachim Nagel have signaled that a rate increase is likely.

Financial markets are currently pricing in a probability of over 72% for a rate hike at the bank's December meeting. Jack Allen-Reynolds, an economist at Capital Economics, noted that concerns regarding the high inflation level will likely prompt the bank to raise rates again in December, though he suggested that could mark the end of the current tightening cycle.

Nicola Nobile, an economist at Oxford Economics, stated that the latest inflation figures strengthen the case for a December rate increase. He added that the central bank is concerned that prolonged energy shocks could lead to broader inflationary pressures becoming more entrenched. Final inflation data for October is scheduled to be released on Nov. 18, 2026.