Why has France's borrowing cost gap with Germany widened?
Core argument: The French OAT-Bund 10-year spread exceeded 140 basis points in mid-2025, up from 40–50 basis points between 2022 and June 2024, which Lustig attributes to political decisions prioritizing pensioners over bondholders.
France’s 10-year spread over Germany has risen above 140bp, from 40–50bp before mid-2024. France has repeatedly signaled that pensioners are senior claimants on government revenues: pension reforms have been weakened or reversed, while governments trying to restrain pension spending have fallen. The minimum retirement age is now 62 years and 9 months, and French over-65s have higher average incomes than the working-age population. Meanwhile, ECB purchases exceeded French net bond issuance in five years from 2015–22, so private investors were net sellers of French bonds; in 2026 they must absorb net issuance equal to 7.5% of GDP. The 10-year (r-g) gap has swung from −3.9pp in October 2020 to +1.9pp. French insurers and pension funds’ share of negotiable government debt has fallen from about 25% in 2014 to under 11%, while nonresidents’ share has risen to 57.5%.

