• Bundesbank President Joachim Nagel says a December ECB rate hike is almost unavoidable unless the inflation outlook improves significantly.
  • Bulgarian central bank chief Dimitar Radev warns that the inflation outlook has deteriorated since September and another increase may be necessary.
  • Inflation is forecast to exceed 4% in the coming months, more than double the ECB's 2% target, complicating the policy path.

Pressure Builds for December Move

A December interest-rate increase by the European Central Bank is looking increasingly probable, with Bundesbank President Joachim Nagel describing it as "almost unavoidable" unless the inflation outlook improves significantly. The ECB held its deposit rate at 2.50% last week, but policymakers now view that pause as temporary. Nagel's comments, made on October 30, underscore the growing conviction that tighter policy is needed to combat persistent price pressures.

The ECB's decision to keep rates on hold was accompanied by a warning that a larger, longer-lasting energy shock threatens both higher inflation and weaker growth. The central bank explicitly declined to commit to a future rate path, but recent commentary from key officials suggests the hurdle for another hike is low. Bulgarian central bank chief Dimitar Radev said in Sofia on November 3 that another increase may be necessary in December if incoming data confirm more persistent inflation, though he stressed this was not a commitment to a specific decision.

Inflation Outlook Deteriorates

Inflation is expected to exceed 4% in the coming months, more than double the ECB's 2% target. September's euro-area inflation rate was 3.8%, up from 3.2% in August, while core inflation, excluding energy and food, stood at 2.5%. October's flash estimate, due November 4, is anticipated to show a further acceleration, with Pantheon forecasting 4% after stronger-than-expected Italian figures.

The central issue is whether an energy-price shock becomes persistent, broader inflation. The ECB says underlying inflation remains broadly stable and wages have not yet responded materially. Nevertheless, more expensive energy can feed into other prices and wage demands—the "second-round effects" officials want to prevent. Radev noted that significant second-round effects had not yet appeared but warned that the inflation outlook has deteriorated since September.

Market Implications and Policy Trade-off

The prospect of another rate hike has already begun to ripple through financial markets. Euribor has been responding to expectations of tighter policy, meaning some borrowers could face higher financing costs before the ECB actually moves. Markets are currently assigning a high probability to a 0.25-percentage-point increase in December, which would take the deposit rate from 2.50% to 2.75%. That is an expected scenario, not an official decision.

Higher sovereign yields are also tightening financial conditions independently of policy-rate changes. Radev warned that rising long-term bond yields and tighter bank financing are already weighing on activity. This creates a difficult trade-off for the ECB: while higher rates are needed to contain inflation, they also risk exacerbating a slowdown. The concern is not just inflation exceeding target, but inflation doing so while the forces supporting growth weaken.

The energy shock has an international origin, with recent reporting connecting higher oil and gas costs to the Middle East conflict and the Iran war. This limits what monetary policy can accomplish directly—higher interest rates cannot resolve the underlying energy disruption, even as the ECB must contain its broader inflationary consequences.

Political and Institutional Context

National fiscal policy is another important part of the response. Radev urged governments to keep energy-support measures temporary, targeted and appropriate to national conditions, while preserving sustainable public finances. His argument is that poorly calibrated or unpredictable policies can undermine investment confidence and further tighten financing conditions.

The ECB also reaffirmed that its Transmission Protection Instrument remains available to counter unwarranted, disorderly market movements that impair monetary-policy transmission across euro-area countries. This is a safeguard against financial fragmentation, not a promise to prevent every increase in government borrowing costs.

The immediate historical comparison is with earlier moves in 2026: the deposit rate rose to 2.25% effective June 17 and to 2.50% effective September 16, before the October hold. Policymakers are again judging how much of the energy shock will persist, but now with tighter financing conditions already exerting a restraining effect.

Looking Ahead

The next policy decision is scheduled for December 17. Updated forecasts, inflation releases, wage evidence and the extent of financial tightening will determine whether the ECB raises rates again. Recent expert assessments generally lean toward further tightening: Seema Shah, chief global strategist, expects another hike by December, while economist David McNamara considers the market's expectation of a quarter-point move sensible but argues that tighter financial conditions and limited second-round effects could reduce the need for subsequent increases.

The ECB's October 30 Survey of Professional Forecasters showed headline inflation expectations rose to 3.0% for 2026 and 2.6% for 2027, while longer-term expectations remained at 2%. That combination explains the policy tension: inflation persistence looks worse, but the evidence does not yet show a lasting loss of confidence in the target.

Inflation is also diverging across major euro-area economies. Preliminary October national readings showed inflation rising in Italy and France, holding in Spain and falling in Germany—complicating the setting of one interest rate for the whole currency union. The ECB is not alone in its struggle: the Federal Reserve also held rates while leaving open a possible December increase as central banks reassess energy-driven inflation risks.

Correction: An earlier version of this article misstated the date of Dimitar Radev's comments. They were made on November 3, not November 2.