France can borrow, but at a price

France is paying more to borrow, and on Monday that worry spilled into the euro. In Asian trading, before most of Europe was awake, one euro bought about $1.1161, its weakest dollar price since May 2025 (MUFG). The order in which markets moved suggests French budget risk added to the slide. It does not show how much of the slide it caused.

A falling euro-dollar rate can mean a weaker euro, a stronger dollar, or both. The European Central Bank's reference rate, a single snapshot taken at a fixed time each day, showed a milder dip: $1.1204 on Monday against $1.1225 on Friday 2 October (ECB).

French bonds moved first

On Friday, France's ten-year borrowing cost reached 4.993%, about 1.59 percentage points above Germany's (158.67 basis points, each a hundredth of a percentage point) (Dow Jones). That gap, known as the spread, is the extra return investors demand to lend to Paris rather than Berlin. French financial press linked the pressure to a contested 2027 budget (L'Agefi).

The euro's overnight low came after that, and the currency also slipped against sterling and the Swiss franc. A dollar rally alone would not explain those falls. ING strategist Chris Turner read the breadth as traders demanding a higher return to hold euros because of French budget risk (ING).

Interest-rate expectations point the same way. ING estimates that since late September, markets have dropped about 30 basis points of expected ECB rate rises, against roughly 13 for the US Federal Reserve (ING). If euro deposits and bonds are expected to pay less, dollar ones look more attractive.

What the timing cannot show

Monday added to a slide that was already under way: the euro had fallen for four consecutive weeks (Reuters). The dollar has its own story too. Oxford Economics' Ricardo Amaro attributes the euro's broader 2026 decline partly to shifting bets on Fed policy (DW).

Spain entered later. Prime Minister Pedro Sánchez called a snap election for 29 November at 09:18 Madrid time, after the euro's Asian-session low (La Moncloa). The announcement cannot explain that low, but Spanish borrowing costs had risen by midday (Europa Press), so it did feed into later trading.

Pressure on France then eased. By late Monday, the French spread had narrowed to about 136-137 basis points (Reuters via LSE). By the New York afternoon, the euro was back near $1.1211, still down 0.36% on the day (Reuters). The two recovered together, which fits the French story but does not prove one caused the other.

Who pays

The French Treasury carries the clearest cost, and it arrives gradually. Existing bonds pay fixed interest, so higher yields only bite when France sells new debt or replaces bonds that mature.

On 1 October, France sold the full €11.999 billion on offer, but paid about 4.93% on a 2036 bond that had sold at 4.23% on 3 September (Reuters, Le Monde). That jump came before Monday, so it measures worry that had been building for weeks. Finance Minister Roland Lescure argued that the sale proved France's signature is solid (Boursorama). It proves France can borrow. It says nothing about the price.

That price reaches beyond the Treasury. Each extra euro of interest is a euro the government cannot spend on anything else, unless it raises taxes or borrows more to cover it. Buyers of new French bonds gain, because they lock in the higher return. Existing holders who need to sell lose, because a bond paying an old, lower rate is worth less when new bonds pay more.

The evidence supports a narrower verdict than blame for the whole euro move. The euro was already falling and the dollar was firm, but French budget worries appear to have added to the weakness on Monday. France could still sell its bonds, yet investors demanded about 0.7 percentage points more to lend to it for ten years than at the comparable September auction. That bill will grow auction by auction until the government and parliament settle the 2027 budget.