Do French borrowing costs now exceed its income growth?
Core argument: France’s borrowing costs exceeded its nominal income growth rate by about 2pp as of 2026Q2, and by roughly 3pp at current yields, the most unfavorable such spread in the rich world.
The problem for France is that its bond yields are surging even as its nominal income growth has slowed relative to the 2017-2019 pace, to the point that, almost uniquely among rich countries, borrowing costs there now substantially exceed growth rates. In fact, the spread between French sovereign borrowing costs and French growth rates is now the most unfavorable anywhere in the rich world. The French economy was not quite growing by 2% a year in euro terms as of 2026Q2, which was even worse than the anemic 3% yearly average nominal growth rate recorded in 2017Q1-2019Q4. As of 2026Q2, France’s cost of borrowing was therefore about 2pp higher than its income growth rate. (At current yields, the penalty is more like 3pp.) By contrast, Spanish and Greek bond yields are still about 2pp lower than their income growth rates.

