• French 10-year government bond yields briefly hit 4.989% on October 1, the highest since 2002, before easing to around 4.91%.
  • The spike reflects investor concerns over France's fiscal trajectory, political uncertainty, and a record debt issuance plan.
  • The yield premium over German Bunds has widened to a 14-year high of 131 basis points, signaling heightened sovereign risk.

Fiscal Fears Drive Selloff

French 10-year government bond yields briefly touched 4.989% on October 1—effectively 5%—the highest level since July 2002, according to LSEG data. The yield eased to roughly 4.91-4.92% on October 2, but the move underscores growing investor anxiety over France's public finances.

The immediate catalyst was the government's unveiling of its 2027 budget bill, which proposes €54 billion of fiscal consolidation, including €43 billion in new measures. The plan aims to narrow the deficit from an expected 5.4% of GDP in 2026 to 5.0% in 2027. Markets, however, remain skeptical that the measures will stabilize debt dynamics. "The budget targets are ambitious but face significant political hurdles," said a Paris-based fixed-income strategist, who asked not to be named. "Investors are demanding a higher premium for the risk that fiscal consolidation stalls."

France's debt stood at 119% of GDP in the second quarter, a post-World War II high, and the government expects to issue a record €340 billion of debt next year to cover the deficit and refinance maturing pandemic-era debt. The yield premium over 10-year German Bunds—the euro area's benchmark—has climbed to about 131 basis points, a 14-year high.

Political Gridlock Adds to Pressure

Prime Minister Sébastien Lecornu's minority government faces an uphill battle to pass the budget. France has lacked a stable parliamentary majority since President Emmanuel Macron's 2024 snap election, and previous austerity plans have toppled two prime ministers. The proposed package includes freezing public-sector pay, restraining local-government and healthcare spending, and cutting employer payroll-tax relief. It also reduces the exceptional surtax on the largest companies by 30%, rather than raising broad-based taxes.

Finance Minister Roland Lescure said interest costs are on track to reach €100 billion annually by the end of the decade, competing directly with spending on public services, defense, and pensions. The EU's Excessive Deficit Procedure, initiated in 2024, adds further pressure to restore a credible fiscal path.

The political uncertainty extends to the 2027 presidential election, with Marine Le Pen leading in polls. Investors are weighing the fiscal implications of potential policy shifts. "The market is pricing in a risk premium that reflects both the current budget debate and the post-election outlook," said a London-based rates trader.

The ECB's Transmission Protection Instrument could theoretically cap yields, but its use appears unlikely given France's identifiable fiscal and political drivers. "The ECB would be hard-pressed to justify intervention when the root cause is domestic fiscal policy," noted a former ECB official. Italian spreads have widened to about 110 basis points over Bunds, with other euro-area issuers also under pressure, though the move remains primarily France-specific.

As the budget debate unfolds, volatility is likely to persist. The key indicators to watch include the OAT-Bund spread, demand at French debt auctions, and the government's updated borrowing forecasts. Without a credible consolidation plan, France's borrowing costs could remain elevated, with broader implications for the euro area.

Correction: October 3, 2025—An earlier version of this article misstated the date of the yield peak. It was October 1, not September 30.