France’s €340bn rollover comes at a price

France plans to sell €340 billion of medium- and long-term bonds in 2027, a figure French media called a record (RFI). Much of that money will repay older bonds rather than add to what the state owes. The cost is what changes: France now pays more on each bond it sells, and that higher price will spread through its debt over years.

Why a record sale is not a record jump in debt

Agence France Trésor (AFT), the agency that manages state borrowing, counts its programme net of buybacks. It deducts old bonds it repurchases early, but not bonds that simply reach maturity during the year. According to Reuters, the target rises from €310 billion this year largely because bonds sold during the pandemic are now coming due (Reuters via Boursorama).

Selling a new bond to repay a maturing one is refinancing, or rolling the debt over. The sale is large, but the amount owed barely moves. This is how issuance can grow while the government promises smaller deficits.

The deficit figures only take you so far. They cover all of France's public finances, including social security and local authorities, while AFT sells bonds for the central state alone. Prime Minister Sébastien Lecornu's government projects that the wider deficit (spending minus revenue) will fall from 5.4% of gross domestic product, the economy's annual output, in 2026 to 5.0% in 2027 (Les Echos Investir). Those numbers show the direction, but they cannot say how much of AFT's programme adds new debt, and the published figures reviewed here do not settle that split.

Debt keeps rising either way, from about 119.3% of GDP to a forecast record of 121.7% (Le Monde), as we reported (To Brief). In early 2026, the Cour des comptes, France's independent public auditor, estimated that the deficit would need to fall to about 2.8% of GDP just to hold that ratio steady (Cour des comptes).

Investors still buy, at a higher price

Investors bought France's bonds this month, but France paid more to sell them. At a 3 September auction, orders for a bond maturing in 2036 covered 2.28 times the amount on offer, yet the accepted yield (the annual return investors demand) rose to 4.23% from 3.90% at the August sale (Boursorama).

Much of that increase looks shared across the eurozone. The ECB (the European Central Bank, which sets rates for the euro area) raised its deposit rate, the rate that anchors other borrowing costs, to 2.50% on 10 September (ECB). Higher central bank rates push up what every government pays.

The ECB's own data fits that reading. Its 24 September bulletin found the eurozone ten-year government yield rose 45 basis points (hundredths of a percentage point) over its review period, while spreads, the gaps between each country's yield and Germany's, stayed broadly stable (ECB). France's extra premium over Germany did not open up during that period. It still sits on top of the wider rise, and every bond France sells carries it.

Who pays, and how slowly

Higher rates hit the budget gradually. The French Senate estimated in earlier reports that the average French bond lasts more than eight years, and in a scenario of persistently higher rates it found interest costs rising by about €3.2 billion in the first year and €23.5 billion over five years (French Senate, French Senate). Each maturing bond refinanced at today's yields adds a little to the bill, and the additions pile up.

Taxpayers carry that bill over the coming years. Buyers of new French bonds lock in better returns. Holders of older, lower-yielding bonds lose, because the market value of their bonds falls when new ones pay more.

The record headline overstates how fast France's debt is growing, because much of the programme rolls over pandemic borrowing. The auction shows two things. France can still borrow freely, and it now pays more to do so, which will push its interest bill up steadily as old debt is replaced. One auction does not set the path from here: yields will respond to ECB policy, to wider eurozone moves and to whether Lecornu's proposed savings survive parliament (Public Sénat).