French Debt Costs Hit 17-Year High After Middle East Oil Blockade

France is now paying 3.97% to borrow over ten years, the highest rate since 2009. Germany, the eurozone’s benchmark borrower, has touched 3.18%, a level last seen in 2011. The trigger is obvious enough: oil heading towards $109 a barrel after the blockade of the Strait of Hormuz disrupted roughly a fifth of global crude trade. But the market move is exposing a deeper European problem: governments are trying to rearm, rebuild and refinance themselves just as money is becoming dearer.

From Oil Price to Bond Price

The route from a blocked oil route to more expensive government debt runs through inflation. When energy costs rise, the headline inflation figure rises with them because it includes volatile items such as fuel and food. US consumer prices reached 3.8% in April, pushed along by a 17.9% jump in energy. US 10-year Treasury yields then moved above 4.44%, and European bond markets followed.

In the eurozone, traders now put an 87% probability on an ECB, or European Central Bank, rate rise in June. Once investors expect higher official rates, yields rise across government bonds. The ECB says the term premium, the extra return investors demand for holding long-term debt when the outlook is uncertain, is the main force behind higher long-end yields. Before this crisis, long-term inflation expectations were still anchored near 2%. Markets have not abandoned faith in the ECB. They are demanding a bigger price for risk.

France: Where Global Shock Meets Local Weakness

Every eurozone government is paying more to borrow. France has the added problem of domestic political risk. The spread between French and German government bonds has widened to roughly 85 basis points, or 0.85 percentage points, compared with a historical average of 53 before the 2024 political crisis.

France’s interest bill rose 37% in the first quarter of 2026, to more than €6 billion. For the year as a whole, the Treasury expects €59.3 billion in debt service, now larger than the education budget. Interest payments have become France’s biggest single item of spending.

The comparison with Italy tells the story most clearly. France and Italy are now borrowing at almost identical rates, after the gap between their bonds fell to just 5.5 basis points last summer. The old market order, with France treated as safe and Italy as risky, has broken down. The ECB has called Italy a "positive exception" because of Rome’s fiscal discipline. Paris, by contrast, is being marked down for political fragmentation.

Guns and the Arithmetic That Doesn’t Add

Into this comes NATO’s push for members to spend 5% of GDP on defence by 2035. France currently spends 2.4%. Getting to 5% would require another €75 billion a year, just as the government has ordered €6 billion in spending cuts to offset higher interest costs. Rearmament and debt service are now competing for the same fiscal space.

France is not the only country caught this way. Spain’s fiscal watchdog, AIReF, has warned that Madrid needs €15 billion in adjustments by 2028 to comply with EU budget rules. Poland’s defence spending has already reached 4.8% of GDP, the highest in NATO, but 37% of it is financed by debt. Germany’s new €500 billion infrastructure fund, added to unlimited defence borrowing, has led economists to warn of breaches of EU fiscal rules.

The ECB meets on June 11. Christine Lagarde has described the moment as a "layer cake of shocks": each layer manageable on its own, much harder in combination. Raising rates against an oil-driven inflation shock is familiar central banking. Doing it without worsening the fiscal strain on the eurozone’s second-largest economy is the harder calculation.