France's Debt 'Cancellation' Costs Money Even Though It Can Never Happen

Everyone sensible agrees the French debt-cancellation plan will never happen. Far-left presidential candidate Jean-Luc Mélenchon can lose the 2027 election. And erasing government debt held by a central bank is forbidden by the treaties that created the euro. A promise so illegal should be free.

It is not. The idea is pure fantasy, and France is already paying for it — not in the small way a borrowing government might, but in the one place that actually governs its solvency.

The free lunch is priced — by someone else

Here is the plan, in four words its author actually used: take the 18% of French government debt the central bank holds and "chuck it in the fire." Mélenchon's argument is that wiping out that slice would cut a headline debt load of over 116% of GDP and free money for public spending. The appeal is obvious: relief with no tax, no cuts, no named victim.

The named victim is simply someone else — the marginal buyer of French bonds. The Bank of France already returns its profits, coupons included, to the state, its sole shareholder. So on the consolidated public books the "cancellation" settles nothing a functioning system hasn't already neutralized. What it would do is announce that the state regards its obligations as discretionary rather than binding. That is the backfire, and it is not hypothetical: the debate is litigating whether the very thing buyers rely on — a government honoring its debt — is negotiable.

The professionals have been blunt about the mechanics. Former Bank of France governor François Villeroy de Galhau has argued that canceling the bonds would force France out of the euro, because the resulting central-bank losses would fall on French taxpayers. Former IMF chief economist Olivier Blanchard calls the debate "idiotic": a bookkeeping non-event that would still shatter private-investor confidence. Even the German Bundesbank president warns the move is prohibited monetary financing that could end in hyperinflation.

The metric that flatters

Watch how the headline metric flatters the plan. Mélenchon is optimizing the total debt stock — the 116% of GDP, the 18% slice — because a lower number is easy to promise. But solvency is not governed by the stock you already owe. It is governed by the money you must keep raising at the market's current price. France needs to borrow roughly 300 billion euros, over $360 billion, from bond markets this year. Every basis point of extra spread is a tax on all of that.

This is the wrong-metric trap in its purest form. Cancelling old, low-coupon debt would shrink the headline ratio while doing nothing about the 300 billion euros a year France must refill — debt that now carries an ever-higher price because of the very promises meant to lighten it.

The meter that actually moves

That price is already visible. France's ten-year yield sat near 4.3% this month, and the gap over equivalent German Bunds was running at roughly 88 basis points — close to the highest since the 2012 euro-area debt crisis, and right at the 90-basis-point level that has historically capped French stress. Read that number for what it is: the political fantasy is not being ignored; it is being priced, one basis point at a time.

The incentive map explains why the promise keeps getting more expensive even though it can't be delivered. Mélenchon wins votes by promising more spending without taxation. The voters get the promise for free. The risk is not held by anyone who voted — it lands on whoever is asked to buy the next French bond, and it spills outward. Analysts warn that if the spread decisively breaks 90 basis points, it signals markets see France's fiscal trouble as long-term, and weaker eurozone borrowers could be dragged into the same repricing. A US investor's exposure doesn't require a position in French debt: it sits in euro-denominated funds, in the European banks and insurers that hold this paper, and in any contagion to the wider bloc.

Here is the test that separates the real risk from the noise. If France eventually forms a government with the parliamentary room to actually cut the deficit — now near 5% of GDP, far above the EU's 3% target — the spread should snap back and the tail evaporates; the plan was theater. If instead the promise of free money becomes a durable feature of the campaign, and the spread keeps climbing through the ceiling, then the fantasy is doing real damage without ever being enacted.

The inversion in one line: a debt that can never legally be cancelled is nonetheless making France's borrowing more expensive. That is the strange property of promises — the people who believe a free lunch exists are never the ones who pay for it. The ones who pay are the people who still expect to be paid.