Yields on sovereign debt are rising across the world. The yield on the 10-year Treasury note, the U.S. benchmark, is up about 1% or 100 basis points since July. That sharp rise has caused market commentators to warn of a sovereign debt crisis. Some experts on global markets place the blame on U.S. fiscal policy, but the true canary in the global debt complex is France, and in truth, all the countries that make up the European Monetary Union.
Yet again, France faces the challenge of cobbling together a budget. Politics is deeply fractured in France. Prime Minister Sebastien Lecornu leads a minority government and must compromise with opposition parties to pass budget legislation. The tensions are reverberating into the debt markets.
At the beginning of 2026, France’s benchmark sovereign debt instrument, the 10-year OAT, carried a yield of about 3.5%. Yields drifted higher over the next several months to as high as 4% during the summer. But when Lecornu released his preliminary budget for 2027, yields soared. Aggressive selling by the market pushed the yield on the 10-year benchmark toward 5%, a level not seen in almost 20 years. Equally important, the risk premium that investors demand to hold French debt over ultra-safe German Bunds has widened sharply. The spread between French sovereign debt and German sovereign debt has reached 1.5% or 150 basis points. That spread was last witnessed during the 2011 Eurozone sovereign debt crisis.
From the standpoint of global investors, France faces severe fiscal strain. Economic growth has been stagnant for decades, but social demands have continued to rise. France maintains the highest social welfare spending ratio among wealthy nations, hovering around 32% of GDP. Public debt has climbed toward 118% to 120% of GDP. Concurrently, rising borrowing costs have driven up debt servicing expenditures by billions annually, locking the budget into an expanding negative feedback loop where a growing share of revenue is consumed purely by interest payments.
The fiscal outlook continues to worsen. The deficit for 2026 is projected to reach 5.4% of GDP, well above initial targets, driven by weaker-than-expected economic growth (forecast well below 1%), declining tax revenues, and mandatory public expenditures on an aging population. Lecornu’s government recently introduced draft fiscal legislation targeting a 2027 deficit reduction to 5% of GDP. But without a corrective policy, economic modeling suggests the deficit would drift toward 6%.
But it gets worse.
After all, even when a budget compromise is reached, France will continue to be in violation of the European Union’s nominal 3% deficit ceiling for several more years. Yet the political and economic realities of Western Europe, with very slow growth combined with aging populations, will force the European Central Bank to continue to backstop French sovereign debt. Markets know that through the Transmission Protection Instrument, the ECB possesses enormous firepower if selling becomes “disorderly” enough to threaten the functioning of monetary policy throughout the eurozone.
Markets recognize that France, with its polarized politics and dim economic future, will find it nearly impossible to solve its fiscal challenges on its own. Instead, markets understand that when they purchase French sovereign debt, they are actually buying a financial guarantee from the ECB.
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What makes sovereign debt markets even more of a financial illusion is that the ECB and the countries that comprise the European Monetary Union all face a bleak economic outlook. Long-term population growth is nonexistent. Productivity growth is stagnant. Economic growth is continually tepid, and this vital part of the global economy is becoming increasingly irrelevant.
So, the big question is: When will global investors demand higher yields from the slowly decaying economic bloc of the European Union?
James Rogan is a former U.S. diplomat who later worked in law and finance for over 30 years. He writes a subscription based daily note on markets, economics, politics and social issues. His email is [email protected].