Mélenchon pushes ECB debt cancellation into French presidential race

Jean-Luc Mélenchon has thrown a monetary hand grenade into the early stages of France's 2027 presidential campaign. Speaking to 10,000 supporters at a lakeside rally in Châteauneuf-sur-Isère on Sunday, the leader of La France Insoumise demanded that the European Central Bank freeze interest payments on the sovereign debt accumulated during the Covid-19 pandemic, a tranche that sits largely on the balance sheet of the Bank of France. The Eurosystem, comprising the ECB and the national central banks of the euro area, holds roughly €600 billion of French government bonds, about one-sixth of the €3.5 trillion total. Mélenchon's formulation was characteristically blunt: the ECB "can and must" write off the burden.

The numbers behind the provocation

France's debt-to-GDP ratio reached 117.5% last year, according to Eurostat, placing it behind only Greece and Italy among eurozone members. The absolute stock, €3.5 trillion, has grown by more than €1 trillion since 2019, driven by pandemic support measures, the energy price shock and a structural deficit that has exceeded the EU's 3% of GDP limit in almost every year for two decades. Servicing that debt cost the French state €52 billion in 2024, more than the entire budget for higher education. With the ECB's deposit rate at 3.25% after the most aggressive tightening cycle in the euro's history, marginal borrowing costs have risen sharply; the ten-year OAT yield traded above 3.4% this month, its highest level since 2011.

The Bank of France's share of that debt is not trivial. Under the public sector purchase programme (PSPP) and the pandemic emergency purchase programme (PEPP), the Eurosystem accumulated €5.2 trillion of sovereign bonds across the currency area. France's allocation, based on its ECB capital key of roughly 20%, comes to just over €1 trillion in gross purchases, of which an estimated €600 billion remains on the Bank of France's books after redemptions and sales. Mélenchon's proposal targets that specific pile: he wants the interest coupons cancelled, effectively converting those bonds into zero-coupon perpetuals, and the principal rolled over indefinitely.

A chorus of rejection from the establishment

The response from across the political and institutional spectrum was immediate and caustic. Prime Minister Sébastien Lecornu called the idea a "scam in its purest form." Economy Minister Roland Lescure went further on BFM TV: "He does it brilliantly, but he's talking nonsense. Tampering with the Bank of France's balance sheet would amount to leaving the euro because you're saying you no longer respect the rules of the common home." Jordan Bardella, president of the far-right Rassemblement National, dismissed it as "nonsense." Former European Commissioner Thierry Breton penned an op-ed warning that monetary financing would destroy the ECB's credibility. Even Aurore Lalucq, a Socialist MEP and trained economist who once supported debt cancellation at the height of the Covid crisis, said circumstances had changed: "Inflation is now a key concern, and such a measure would worsen the problem."

The critique rests on three pillars. First, the legal barrier: Article 123 of the Treaty on the Functioning of the European Union explicitly prohibits the ECB and national central banks from granting overdraft facilities or any other type of credit facility to public authorities. The ECB's asset purchase programmes were justified as monetary policy tools to hit the inflation target, not as fiscal support. Cancelling the coupons ex post would retroactively reclassify them as monetary financing. Second, the market signal: investors would treat a unilateral French write-down as a selective default, triggering credit default swap payouts and likely shutting Paris out of primary markets. Third, the inflation risk: converting interest-bearing liabilities into non-interest-bearing ones expands the monetary base without a corresponding increase in output, a textbook recipe for price pressures.

The treaty trap and the Draghi precedent

Mélenchon's allies are aware of the legal obstacle. Manuel Bompard, the party's deputy leader, described a unilateral move as "disobedience" during a Saturday conference. The phrase is deliberate: it echoes the language of 2015, when Alexis Tsipras's Syriza government in Greece clashed with the troika. But the institutional architecture has hardened since then. The ECB's Outright Monetary Transactions (OMT) programme, announced by Mario Draghi in 2012 with his "whatever it takes" pledge, remains conditional on a country requesting a precautionary programme from the European Stability Mechanism and accepting strict conditionality. The pandemic emergency purchase programme (PEPP) was framed as a temporary, proportional response to a symmetric shock. Neither provides a legal basis for permanent debt cancellation.

Carsten Brzeski, global head of macro research at ING, put it bluntly: "Whatever you want to call it, Mélenchon's comments suggest that he would like the ECB to restate its 'whatever-it-takes' position and actually bail out governments that are unable and unwilling to bring their public finances onto a sustainable footing." He noted that France has breached the Stability and Growth Pact's deficit ceiling in 18 of the last 20 years, postponed the pension reform that Brussels demanded, and routinely ignored Commission country-specific recommendations. The Commission opened an excessive deficit procedure against Paris in July 2024; the new fiscal rules, agreed in 2024, require a structural adjustment of 0.5% of GDP per year until the deficit falls below 3%.

An unlikely endorsement from the City

Not every voice in finance opposes the idea. Matthieu Pigasse, the Lazard banker who advised Greece during its 2010, 2015 restructuring and recently won the mandate to restructure Venezuela's sovereign debt, appeared via video link at the France Unbowed conference to endorse Mélenchon's plan. Pigasse argued that the ECB's balance sheet is a policy tool, not a sacred ledger, and that cancelling pandemic-era coupons would not trigger inflation because the money was already created. He has been debating the point publicly with Olivier Blanchard on X, the platform formerly known as Twitter. Blanchard's riposte was concise: "Proposing false solutions, raising false hopes, is, I believe, irresponsible." The exchange underscores a fracture within the French economics profession: a minority of heterodox scholars, including some at the Paris School of Economics, have long argued that sovereign debt held by the central bank is an accounting fiction that can be extinguished without macroeconomic consequence.

Why the proposal matters politically

For Mélenchon, the economic orthodoxy is the point. "We are very happy there is a controversy on debt," said Antoine Léaument, a France Unbowed deputy, on the sidelines of the rally. "Debt is the excuse used to roll back social rights. We'll take whatever comes our way. We're game." The strategy is to reframe the fiscal debate from "how do we pay?" to "why do we owe?" By placing the ECB's holdings at the centre, Mélenchon forces his rivals to defend a monetary architecture that many voters associate with austerity. A Toluna Harris Interactive poll published on Monday put him at 17%, level with Édouard Philippe for the projected second-round slot behind Marine Le Pen, who leads at 32%. If that pattern holds, the 2027 runoff would pit two candidates, Le Pen and Mélenchon, who both reject the current fiscal framework, albeit from opposite ideological poles.

The centre-right and centre-left have yet to settle on standard-bearers. Philippe, the former prime minister, leads a fragmented field that includes Bruno Retailleau, Gérald Darmanin and François Baroin on the right, and Raphaël Glucksmann, Carole Delga and Olivier Faure on the left. None has declared formally. The primary season, if it happens, will not begin until late 2026. Mélenchon, by contrast, launched his campaign in June, giving him a six-month head start on messaging and organisation. His rally in the Drôme was the third major gathering this summer; the next is scheduled for Marseille in September.

The Medef test and the campaign calendar

The first real stress test comes Thursday, when Mélenchon and Le Pen will share a stage with five other leading contenders at the annual summer conference of Medef, France's largest business lobby. Public finances are top of the agenda. Medef president Patrick Martin has already warned that "any challenge to the independence of the ECB or the sustainability of public debt would be a disaster for French companies." The audience, several thousand executives, will be hostile to Mélenchon's platform of wealth taxes, price controls and a €1,600 minimum wage. But the format allows him to address the capitalist class directly, framing his debt proposal as a defence of productive investment against rentier interests.

Beyond Medef, the calendar hardens. The European Commission will publish its post-summer fiscal opinions in November, likely confirming that France's deficit will exceed 6% of GDP in 2024 and 5.5% in 2025. The budget bill for 2026, due in October, will be the first test of Lecornu's ability to deliver the €60 billion of savings he has promised. If the government falls, a real possibility given the absence of a parliamentary majority, an early legislative election could scramble the presidential timetable. Mélenchon's team is preparing for both scenarios: a normal spring 2027 vote and a snap contest as early as autumn 2026.