The International Monetary Fund (IMF) issued a warning on Wednesday about the upward trend in bond yields, urging governments in advanced economies and beyond to act urgently to bring their public finances back into line.
Specifically, the call was to rein in public spending, deficits and debt levels at a moment when rising government bond yields threaten to push the cost of servicing that debt even higher.
IMF flags the risk from rising government bond yields
The Fund’s appeal is set out in a report titled Rising Sovereign Yields Raise the Fiscal Stakes, signed by Rodrigo Valdés, head of the IMF’s Fiscal Affairs Department, and published on Wednesday, October 14, 2026, while the autumn meetings of the International Monetary Fund and the World Bank continue in Bangkok.
Valdés cautioned governments that the increase in yields is piling on top of fiscal problems that were already there, at a time when the world’s average debt-to-GDP ratio is about to climb to 100%, a record since World War II, leaving countries with narrower room to maneuver.
The jump in yields is therefore aggravating a situation that was already highly critical. That is why the IMF stressed that advanced economies carrying high debt levels will have to roll out «concrete measures anchored in credible medium-term plans and realistic assumptions».
Those steps are essential to ensure that «the debt trajectory follows a sustainable path, to contain borrowing costs and limit the spillovers to the rest of the world».
IMF: bond yields rising with the oil shock, but public finance fundamentals are central
The Fund official ran through the forces pushing sovereign bond yields higher: «Several forces are pushing yields up in advanced economies, including the oil price shock, the persistence of inflation, stronger investment demand and higher expectations of future growth tied to artificial intelligence (AI)».
That said, the warning was not long in coming: the fundamentals of public finances, the Fund noted, «remain a central factor». And the current picture describes the situation precisely:
«In the major advanced economies, high debt levels, public spending pressures and the prospect of heavy government bond issuance in the years ahead are putting upward pressure on the yields investors demand to hold longer-dated government paper».
«Interest spending is ballooning globally»
Alongside the trend in yields, the report also flagged their potential domino effect: «Higher benchmark yields in the major economies can also propagate beyond national borders, worsening debt dynamics in other countries», at a time when «the pressure on public budgets is already evident».
Projections indicate that «the average effective interest cost of government financing will rise from 2.3% in 2021 to 3.7% by 2031», an increase that, «together with the growth in debt, is causing interest spending to balloon globally».
Governments therefore need to move as soon as possible to confront an emergency that is already under way:
«In the United States, for example, interest spending is projected to rise from roughly 2.8% of GDP before the pandemic to 5.7% in 2031, a level roughly equal to projected spending on Social Security, the main federal social insurance program. In low-income countries, interest payments today absorb more than 15% of tax revenues. Between 2011 and 2019, the average cost stood at around 9% of GDP».
Sovereign yields spike: over one year, BTP and OAT yields up 113 and 143 bps
The surge in yields on G7 government debt is plain to see, and it is explained by the heavy wave of selling that has hit sovereign bonds.
Over the past year, 10-year yields on German Bunds traded in the secondary market have jumped by 85 basis points, while yields on UK government bonds have risen by 82 basis points.
Italian BTPs and French OATs have fared worse, with yields shooting up by 113 basis points and 143 basis points respectively. (BTPs and OATs are the benchmark government bonds issued by Italy and France.)
In recent weeks, the anxiety has centered above all on French OATs, which have paid the price of investor doubts about Paris’s ability to put a brake on the growth of its deficit-to-GDP ratio, against the large unknown represented by the upcoming presidential elections.
Lagarde (ECB) speaks from Bangkok: the solution is «at home»
France’s fiscal problems were precisely what European Central Bank President Christine Lagarde addressed on Wednesday from Bangkok, on the sidelines of the IMF meetings, during the «CNN Global Perspectives» event.
«There are specific circumstances that make some countries more affected than others, and France is an example», said the head of the Eurotower, adding that «in this case, the main and priority solution has to come from France itself, and it concerns budget policy».
Lagarde ruled out, for now, any need to activate the anti-spread shield, the TPI (Transmission Protection Instrument), which the ECB announced on July 21, 2022 in order to counter disorderly dynamics in euro area bond markets that risk compromising the transmission of monetary policy across the single currency bloc.
For France, Lagarde underlined, the solution is not external but «lies at home»: in short, Paris itself has to do the work of repairing its own public finances.
France is grappling with a rapidly escalating sovereign debt crisis that risks dragging the entire European Union along with it.
In recent weeks, financial pressures have intensified quickly, as shown by the surge in OAT yields, which have jumped to nearly 5%, the highest level in more than twenty years, against a debt-to-GDP ratio that is now approaching 120%.
Editor’s note
This article was originally published in Italian on money.it by Laura Naka Antonelli on October 14, 2026 as «FMI lancia allarme su debiti e rendimenti bond. Francia, arriva la risposta di Lagarde». It has been translated and adapted for an international audience by the Money.it International desk.
