French Inflation Accelerates to 3.0% in September, Driven by Surging Energy Costs

French inflation accelerated more than anticipated in September, with the annual rate climbing to 3.0% from 2.4% in August, according to data released by the national statistics agency, Insee. The figure surpassed both market expectations and Insee's own forecast of 2.9%.

The European Union-harmonised index of consumer prices, a measure used for comparison across the bloc, showed an even sharper increase, rising to 3.4% year-over-year from 2.6% in the previous month.

Energy Prices Drive Increase

The primary driver of the acceleration was a steep rise in energy costs, which highlights the direct pass-through of global oil price increases to French consumers. The government has opted for targeted support measures rather than broad-based fuel tax cuts.

Key inflation components for September include:

• Energy prices: Soared by 21.2% year-over-year, up from a 16.7% increase in August.
• Services inflation: Increased to 2.2%, compared to 1.9% in the prior month.
• Food inflation: Rose to 1.5%, with fresh food prices jumping 9.9% from a year earlier.
• Manufactured goods: Prices continued to fall, declining by 0.3%.

Consumer Spending Weakens

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Separate data from Insee indicated that rising prices are impacting household behavior. Consumer spending on goods fell by 0.5% in volume terms in August, reversing a 0.4% gain from July. The decline was led by a 2.3% drop in energy consumption and a 0.4% decrease in food purchases.

Despite the monthly drop, household consumption of goods remained up 0.8% on a year-over-year basis.

Fiscal and Market Pressures Mount

The inflation data arrives amid a challenging fiscal backdrop for France. Public debt reached 119% of GDP in the second quarter, and the government projects it will rise to 121.7% by 2027. This has put pressure on the country's borrowing costs.

The yield on the 10-year French government bond has recently climbed to around 4.8%. The spread over the equivalent German Bund has widened to approximately 120 basis points, nearly double the 62 basis points seen in early June, signaling a higher risk premium demanded by investors for holding French debt.