French Debt Crisis Sparks Euro Weakness Amid Rising Borrowing Costs

The French government's rising borrowing costs are causing concern for the euro-to-dollar rate. The gap between French and German ten-year bond yields has widened to over 120 basis points, up from under 90 basis points in September.

This increase is a sign of market stress that could pose significant downside risks to the euro, according to Frederik Ducrozet, Head of Strategy & Macro Research at Pictet Wealth Management. The spread between German and French ten-year yields has doubled since February, with the French ten-year yield now at its highest level since 2008.

Jeroen Blokland, Founder of Prestige Investment Partners, warns that France's debt burden is a risk for the euro because the European Central Bank (ECB) and other Eurozone states will not allow France to default. As a result, the ECB will be forced to carry the burden of keeping French debt sustainable.

The Agence France Trésor has put numbers on the funding strain: borrowing needs rise to a record €340bn in 2027, up €28bn from 2026, with the interest burden climbing to €73bn and redemptions rising to €190bn. Higher yields lift the cost of servicing debt, widening the deficit that markets are worried about.