ECB Faces a French Test as Energy-Driven Inflation and Bond Stress Collide Ahead of October Meeting

The European Central Bank sits down on Thursday in a Europe that looks unsettled from two directions at once. In France, a weakened government is dealing with violent protests. Farther away, a war involving Iran is keeping energy prices above $100. Both feed into a decision that David Coombs, head of multi-asset investments at Rathbones Asset Management, described plainly: setting rates against that backdrop is "incredibly difficult."

The expected outcome is a pause. The ECB's key rate is 2.5%, after increases in June and September meant to counter inflation driven by the war's effect on energy costs. Economists polled by Reuters expect it to hold this week and then raise by a quarter point in December. MUFG senior economist Henry Cook said he does not think policymakers have become materially less worried about inflation.

The bank's messaging is likely to stay data-dependent. Inflation was 3.8% in September, well above the 2% target, while rising government bond yields raise the risk of damage to growth. Christine Lagarde, the ECB president, has recently spoken of a "measured response." Rohan Khanna, Barclays' head of euro rates strategy, expects a clear acknowledgment that tighter financial conditions should slow growth and ease price pressures, alongside plenty of uncertainty about the conflict and energy prices.

On energy, the signals are mixed. Chief economist Philip Lane and other officials have suggested the bank is not overly worried, for now, that high fuel costs will spread into other prices and wages. Core inflation, which strips out food and fuel, edged up to 2.5% last month from 2.4%. That is a muted move, and it suggests the second-round effects that can start a hard-to-break spiral have not yet appeared. Even so, oil is up almost 80% this year, and the ECB will probably stress vigilance. Bas van Geffen, senior macro strategist at Rabobank, said further escalation or energy pressure could mean more hikes in 2027, though he has none penciled in. Markets price in at least two hikes by mid-2027.

France is the other pressure point. French 10-year borrowing costs have just reached 24-year highs above 5%. The premium investors demand to hold French 10-year bonds over German ones stands at 170 basis points, up from 92 when the ECB met last month. The central bank is watching, but investors should not expect quick action. The Transmission Protection Instrument allows it to buy bonds of any member state facing an "unwarranted, disorderly" tightening of financing conditions. Lagarde has said France should resolve its debt problems through fiscal consolidation.

Berenberg chief economist Holger Schmieding said the ECB could hold back on rate hikes if it judges that a French crisis would materially hurt growth. He added that if a hypothetical French crisis spread seriously to countries with much more sustainable fiscal policy, the ECB would probably use the TPI to shield those countries, not France.

A fifth question hangs over the press conference: who succeeds Lagarde. She could be appointed the next World Economic Forum chair as early as November, and she will likely be pressed on succession. Former Dutch central bank governor Klaas Knot and former Bank of Spain governor Pablo Hernandez de Cos are seen as frontrunners. Her departure would open a second vacancy on the six-member Executive Board after Isabel Schnabel's recent resignation, with Lane due to step down in May.

Lagarde's term runs to next October. Leaving early would give time to choose a successor before France's spring presidential election, and analysts say a snap Spanish election could also affect the politics of the succession. The things to watch are French yields above 5%, the 170 basis point spread, and the December decision.