Borrowing costs across Europe’s largest economies surged to their highest levels in more than 15 years on Tuesday as a global bond sell-off accelerated, driven by surging energy prices, hawkish central bank signals, and mounting fiscal concerns. Germany’s benchmark 10-year Bund climbed above 3.36%, a 15-year high, while France’s 10-year OAT yield rose to 4.215%, its highest since November 2008. Italian 10-year yields traded slightly lower at 4.188%, a reversal that marks France’s displacement of Italy as the main focus of European debt markets.
The sell-off was broad. Dutch 10-year yields hit 3.43%, a 15-year high. Spain’s 10-year yield climbed above 3.80%, its highest since November 2023. Germany’s 30-year Bund surged above 3.84%, also a level unseen since 2011. In Japan, the 10-year government bond yield reached 3% for the first time since 1996, a milestone that underscores how the sell-off has become a global phenomenon rather than a regional one.
The simultaneous repricing across major sovereign bond markets signals a fundamental shift in how investors assess government debt. For decades, low or negative yields in Europe and Japan reflected expectations of permanently low inflation and central bank support. That framework is breaking down as energy shocks, geopolitical conflict, and fiscal expansion force a reassessment.
France replaces Italy as bond market focus
For most of the summer, French borrowing costs have exceeded Italy’s, a shift that reflects investors’ growing concern about Paris’s fiscal trajectory. France currently holds the third-highest debt-to-GDP ratio in the EU at 118.4% of GDP this year, projected to reach 120.5% in 2027 according to IMF estimates. Only Greece and Italy carry heavier burdens, and both of those countries have undergone painful austerity programs that France has avoided.
The Banque de France expects the budget deficit to reach 5.2% of GDP this year. Difficult budget negotiations ahead of the 2027 presidential election have raised doubts about the government’s ability to reverse that trend. Robert Timper, BCA’s chief fixed-income strategist, told Euronews that France has the most unsustainable fiscal outlook in the euro area, and its borrowing costs should reflect that reality.
To get back to a sustainable fiscal path, Timper said, France needs substantial reforms that will be unpopular because they curtail welfare spending. A large political majority would be necessary for such reforms, or bond market pressure could force them instead. The political landscape heading into 2027, with fragmented parties and rising populist movements on both left and right, makes a large governing majority unlikely.
The comparison with Italy is instructive. Italy’s debt-to-GDP ratio is higher at 137%, but the country has a longer track record of navigating market scrutiny and has implemented several fiscal adjustments under pressure from Brussels. France, by contrast, has larger deficits and less political willingness to cut spending, creating a more concerning trajectory for bond investors.
Energy prices drive inflation higher
The catalyst for Tuesday’s sell-off was energy. Eurozone flash inflation data showed prices rose 3.3% year-over-year in August, up from 2.9% in July. Energy prices surged 14.3% year-over-year, well above the ECB’s 2% target. The central bank holds its next monetary policy meeting next week, and most investors are betting on a 25-basis-point rate hike.
Leo Barincou, senior economist at Oxford Economics, said the ECB is all but certain to hike at next week’s meeting given that inflation is still accelerating. The U.S. 10-year Treasury yield rose to 4.78% on the same dynamics, with traders raising the probability of a September Fed rate hike to about 70%.
Oil prices continued to climb as U.S. strikes against Iran persisted, adding a geopolitical risk premium that reinforced inflation concerns. WTI crude hit $88 per barrel, its highest since late July. Brent traded near $96. Higher crude feeds directly into consumer prices across Europe, where energy import dependence makes the continent particularly vulnerable to supply disruptions near the Strait of Hormuz.
German inflation rose to 2.9% in August, coming in below some expectations but still well above the ECB’s target. The combination of sticky domestic inflation and imported energy cost pressures creates a policy dilemma for the central bank, which faces pressure to act on prices without choking off an economy already showing signs of weakness in manufacturing and services.
What this means for markets
Government bonds have traditionally served as safe-haven assets during periods of uncertainty. That role is being tested as investors face the possibility of prolonged stagflation, a combination of high inflation and weak or zero economic growth. The simultaneous sell-off across major bond markets suggests investors are reassessing the entire fixed-income landscape rather than rotating between specific countries.
The ECB meeting next week and the Fed’s September 16 decision will be the next inflection points. Until then, the direction of global rates will likely depend on incoming data, with ADP employment figures Wednesday, the ISM services print, and Friday’s August jobs report all on the calendar. A weak U.S. jobs print could cool rate-hike expectations and ease some pressure on global yields.
For European governments, the immediate concern is borrowing costs. Higher yields increase the cost of servicing existing debt, which can create a feedback loop where rising interest expenses widen deficits further, pushing yields higher still. France, with its combination of high debt, large deficits, and political uncertainty, faces that risk more acutely than its peers.
The broader implication is that the era of cheap government borrowing may be ending for Europe’s largest economies. If central banks follow through on rate hikes to fight energy-driven inflation, the cost of funding public debt will remain elevated for years, forcing difficult choices about spending, taxation, and the pace of green transition investments that both France and Germany have committed to.
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