France’s 4% Debt Squeeze

France has not lost the confidence of the bond market. It has lost something more prosaic and, for a government, more awkward: the comfort of cheap money.

The yield on France's 10-year government bond, the return investors demand to hold French debt at current prices, reached 4.05% last week, its highest level since 2009 (Boursorama/Reuters, LSE). Higher yields mean the state pays more to borrow. The effect is gradual rather than sudden: old, cheaper debt matures and is replaced with new, more expensive debt. The pressure lands in the budget, not at the auction desk.

France is hardly alone. Long-term borrowing costs have risen in Germany, Japan, the US and the UK as well (The Guardian). The distinctly French problem is visible in the spread, the gap between what Paris and Berlin pay to borrow. Last week it stood at 84–86 basis points, or 0.84–0.86 percentage points (Boursorama/Reuters, QuiFinanza). Italy's spread was around 78–82bp (El Economista). That is the uncomfortable comparison: France is now paying more than the country that once defined the eurozone debt crisis.

How 4% Slowly Eats the Budget

France has €3,536 billion in public debt (INSEE). That stock of debt does not reprice overnight. Existing bonds keep their original, lower interest rates until maturity. The squeeze comes through refinancing: as older bonds expire, France's debt agency, the AFT, replaces them at current rates. This year the AFT plans to issue about €310 billion in medium- and long-term bonds, up from under €210 billion in 2019 (Le Figaro, AFT).

The bill is already moving through the accounts. France paid €34.5 billion in interest in the first half of 2026, 19% more than in the same period last year (Reuters Breakingviews). Government estimates put the full-year cost at €64.8 billion in 2026 and €74.2 billion in 2027, compared with €31.6 billion in 2019 (Le Figaro). Each extra euro spent on interest is a euro that cannot be spent on services, tax cuts or deficit reduction.

Who Pays, Who Collects

The winners are the new buyers of French bonds. Insurers, pension funds and savers looking for yield can now collect more income than they did when France borrowed at 1% or 2%. Existing bondholders are on the other side of the trade: when yields rise, the market price of older bonds with lower coupons falls (Notizie.it). Those losses stay on paper unless the bonds are sold, but banks and funds that mark portfolios to market feel them in their balance sheets (Il Messaggero).

The larger cost falls on future taxpayers and users of French public services. The IMF says France needs structural budget tightening of about 0.8% of GDP per year through 2029 to stabilise its debt (IMF). Prime Minister Sébastien Lecornu is aiming for a 2027 deficit of around 4.9% of GDP, while the EU path points closer to 4.3% (Le Monde). Bridging that distance means spending freezes, tax rises, or some mixture of the two.

For governments in Rome and Athens, France's discomfort is useful politics. Italian fact-checkers have noted that the comparison flatters Italy partly because German yields have risen sharply too, not only because Italy has improved (Pagella Politica).

France Can Still Borrow. The Budget Is the Problem.

On 20 August, the AFT sold €12.5 billion in bonds, with demand comfortably above supply (Les Echos Investir). Investors will still lend to France. They are simply charging more for the privilege.

The ECB does have a bond-buying tool, the Transmission Protection Instrument, designed to stop unjustified market pressure from breaking the link between its interest-rate policy and borrowing conditions across the eurozone. But access is not automatic. The country concerned must be broadly complying with EU fiscal rules. France has been in the EU's excessive-deficit procedure since July 2024, the formal process for countries whose deficits breach the bloc's limits, which makes ECB intervention harder to defend (ECB, European Commission).

So the immediate question is not whether France can sell bonds. It can. The harder test is whether Paris can legislate several years of budget tightening before the 2027 presidential election makes fiscal discipline even harder to sell.