€54 billion of savings, €12 billion more in interest: France now borrows above Italy, and the bill has only begun

For the first time in the history of the euro, Paris pays more than Rome to borrow for ten years, by around 30 basis points. The usual reading blames the April 2027 presidential election and expects the premium to fade with it. The government’s own budget documents tell a different story: of the €54 billion of fiscal effort announced for 2027, €12 billion is swallowed by the rise in the interest bill alone, and the bulk of the repricing has not happened yet.

I. The facts and the figures

On 1 October, Prime Minister Sébastien Lecornu’s government presented its 2027 budget. The 10-year OAT, France’s benchmark bond, touched about 4.99% that day, its highest level since 2002 [9][14]. The next day, the gap with the German Bund reached roughly 159 basis points (bp), the widest since November 2011, before narrowing to about 135 bp on Friday 9 October, when the French 10-year closed near 4.85% [6]. Italy’s spread over the Bund, meanwhile, fell to 107 bp [7]. The result is a record: France now pays about 30 bp more than Italy, when in July 2012 Italy was paying more than 400 bp above France [8].

The budget itself is a consolidation plan on paper. The government counts €54 billion of total effort, of which about €43 billion comes from new measures in the 2027 finance and social-security bills, mostly on the spending side and without any across-the-board tax increase [1]. The deficit is meant to fall from 5.4% of GDP in 2026, a target already missed by 0.4 point, to 5.0% in 2027, on the assumption of 1.0% growth and 1.8% inflation after 0.5% growth in 2026 [1][3]. Public spending would barely move, from 57.1% to 56.9% of GDP [1].

The figure that deserves the headline sits a few lines lower. The government’s own budget pack puts the debt-interest charge at €79.2 billion in 2026 and €91.2 billion in 2027 [1]: a rise of €12 billion, or 15%, in a single year. Put differently, about 22% of the announced effort (12 out of 54, our calculation) is transferred straight to bondholders before a single euro reaches the deficit. Gross public debt stood at €3,595.5 billion, or 119.0% of GDP, at the end of June, up €59.6 billion in one quarter [2]; the budget projects 121.7% by the end of 2027 [1].

France: the fiscal path in the 2027 budget	2026	2027
Real GDP growth	0.5%	1.0%
Inflation	2.1%	1.8%
Public deficit (% of GDP)	5.4%	5.0%
Public debt (% of GDP)	119.3%	121.7%
Public spending (% of GDP)	57.1%	56.9%
Debt-interest charge	€79.2bn	€91.2bn
State medium/long-term issuance (AFT)	≈ €310bn	€340bn (record)

II. What the market is underestimating

The dominant interpretation, in Paris as in London, treats the spread as a political risk premium: investors fear that the 2027 election brings a government that reverses consolidation, and the premium will deflate once the vote is past. That reading is not wrong, but it looks at the wrong number. The spread is the marginal price of French credit. What the budget pays is the average price, and the two are now very far apart.

Divide the 2027 interest charge by the stock of debt and the average cost comes out at roughly 2.4% (our calculation, using the budget’s debt ratio and nominal GDP of about €3.15 trillion). The marginal cost, the yield at which France refinances today, is about 4.85% at ten years. The gap closes mechanically as old cheap bonds mature. The Agence France Trésor (AFT) plans a record €340 billion of medium- and long-term issuance in 2027 [13], against an average maturity of 8 years and 163 days for the negotiable state debt [4]. Every €100 billion refinanced at today’s yields instead of the average cost adds about €2.4 billion a year, permanently. On the 2027 programme alone, the order of magnitude is around €8 billion of additional annual interest locked in for a decade (our calculation, which overstates slightly because part of the programme is issued at shorter maturities).

This is where the debt arithmetic turns. The condition for a stable debt ratio depends on the gap between the interest rate (r) and nominal growth (g). With the budget’s own assumptions, nominal growth in 2027 is about 2.8%. At the current average cost of 2.4%, r is still below g, and France could stabilise its debt with a primary deficit of about 0.5% of GDP. The 2027 budget plans a primary deficit of about 2.1% of GDP (5.0% total minus roughly 2.9% of interest). The adjustment needed is therefore about 1.6 points of GDP, or some €50 billion: large, but within reach of a serious plan.

Now replace the average cost with the marginal one. At 4.85%, r exceeds g by two points, and the primary balance required to stabilise a debt of 121.7% of GDP becomes a surplus of about 2.4% of GDP. The distance from the planned primary deficit is then about 4.5 points of GDP, close to €140 billion a year (our calculations). The current budget is designed for the first world. The bond market has started to price the second. The economist Hanno Lustig makes a related point: by his measure, France’s real r minus g has swung by more than 550 bp since October 2020, from deeply negative to about +1.9 points [12].

III. The deeper analysis

The strongest argument against alarm deserves to be stated fully. France is not Greece in 2010, nor Italy in 2011. Its debt has a long maturity, so higher yields feed into the budget only slowly. The state retains access to a deep market, with non-residents holding 57.5% of its negotiable debt [4], and the spread has already retreated by more than 20 bp from its peak. Part of the rise in yields is global: the US 10-year Treasury sits above 5.2%, and the Bund itself yields around 3.5%. Moody’s still rates France Aa3 [5]. And, the argument continues, cutting €54 billion from an economy growing at 0.5% risks lowering growth, raising the deficit ratio and defeating its own purpose. On this view the right response is patience, and if markets panic, the European Central Bank (ECB) has the tools to calm them.

Each of these points is partly true, and none of them changes the direction of travel. The long maturity buys time, not solvency: it delays the convergence of average cost towards marginal cost, it does not prevent it. The global component of yields explains why the Bund rose, not why the French premium over the Bund roughly tripled from the 40 to 50 bp range that prevailed from 2022 to mid-2024 [12]. Once that extra 90 bp or so is spread across a €3.6 trillion debt, it is worth roughly €30 billion a year (our calculation): more than half of the whole 2027 effort. As for the austerity trap, the plan barely touches spending, which remains at 56.9% of GDP [1], one of the highest ratios in the developed world. A country with that level of public spending is not suffering from a lack of demand from the state.

The ECB argument is the weakest. Its Transmission Protection Instrument (TPI), created in July 2022, can buy bonds of a country facing an unwarranted, disorderly widening of spreads, but its first eligibility criterion requires that the country is not under an excessive deficit procedure, or at least complies with the EU’s recommendations [11]. France is under such a procedure [14]. The safety net is not absent, but it is conditional on precisely the consolidation that France has postponed.

This is where Friedrich Hayek is useful. In his 1945 essay on the use of knowledge in society, he described prices as a system of signals that condenses information no planner possesses. An interest rate is such a price: it tells a borrower what lenders, collectively, think of the risks. From 2015 to 2022, according to Lustig, there were five years in which Eurosystem purchases exceeded France’s net bond issuance [12]: private investors were net sellers, and the price of French credit was largely set by the central bank. Successive governments read a signal that said debt was almost free, and spent accordingly. The signal was false. The spread is not a market malfunction to be corrected; it is the price system doing again the job it had been prevented from doing. A new rescue that suppressed it would repeat the original error, a form of what Hayek called, in his 1974 Nobel lecture, the pretence of knowledge.

IV. The European context

The striking feature of the moment is that the hierarchy of the euro area has been inverted. Countries that took their adjustment in the 2010s now borrow on better terms than France, despite higher debt ratios. Greece, with debt at 146.1% of GDP, ran a surplus of 1.7% of GDP in 2025; Spain’s deficit was 2.4%; Italy, at 137.1% of GDP, brought its deficit down to 3.1% [10]. France, with a debt ratio lower than Italy’s, ran a deficit of 5.1%, close to Belgium’s 5.2% and well above the euro-area average of 2.9% [10]. Markets price flows as much as stocks: what matters is not only how much a state owes, but whether it is still adding to the pile faster than its economy grows.

Country	2025 deficit (% of GDP)	2025 debt (% of GDP)	10-year spread vs Bund, 9 Oct 2026
France	−5.1%	115.6%	≈ 135 bp
Italy	−3.1%	137.1%	≈ 107 bp
Belgium	−5.2%	107.9%	n/a
Spain	−2.4%	100.7%	n/a
Greece	+1.7%	146.1%	n/a
Germany	−2.7%	63.5%	—
Euro area	−2.9%	87.8%	—

There are two risks for Europe. The first is contagion: France is the euro area’s second-largest economy and one of its largest sovereign debt issuers, and a disorderly repricing of OATs would test Italy, Belgium and the ECB together. The second is subtler. The German Bund now yields around 3.5%, as Berlin finances a large increase in defence and infrastructure spending. The euro area’s risk-free rate is therefore rising at the same time as the French premium, which compounds the effect on Paris. For foreign investors, the question is no longer whether France is a core or peripheral issuer. It is whether the label still means anything.

V. What to watch

• 23 October: Moody’s. The agency rates France Aa3 with a negative outlook, one notch above S&P and Fitch at A+ [5]. A downgrade would align the three main agencies and could matter for investors whose mandates rely on the average rating.
• 27 November: S&P’s review of its A+ rating [5], after the parliamentary debate has shown how much of the €43 billion of new measures survives.
• The France–Italy gap. A spread above Italy’s that persists into the new year would mean investors no longer treat the inversion as a temporary political accident.
• The 150 bp line on the OAT–Bund spread, crossed in early October for the first time since the euro crisis [6].
• The average cost of debt. The single number that tells whether France is still in the r < g world: around 2.4% today, against a marginal cost close to 5%.

Key figures

• ≈ 30 bp: France’s 10-year premium over Italy on 9 October, a record [8]
• 4.99%: the 10-year OAT yield on 1 October, its highest since 2002 [14]
• 159 bp: OAT–Bund spread on 2 October, widest since November 2011; ≈ 135 bp on 9 October [6]
• €79.2bn → €91.2bn: the debt-interest charge, 2026 to 2027 [1]
• €54bn: total fiscal effort in the 2027 budget, including €43bn of new measures [1]
• 22%: share of that effort absorbed by the rise in interest (our calculation)
• €3,595.5bn, 119.0% of GDP: public debt at end-June 2026 [2]
• 5.4% → 5.0% of GDP: deficit 2026 to 2027 [1]
• 57.1% of GDP: public spending in 2026 [1]
• €340bn: record AFT issuance programme for 2027 [13]
• 8 years and 163 days: average maturity of the state’s negotiable debt [4]
• 57.5%: share held by non-residents [4]
• ≈ €140bn: annual primary adjustment needed to stabilise debt at today’s marginal rate (our calculation)

Sources

1. French government, 2027 budget press pack (PLF and PLFSS 2027), October 2026: solidarites.gouv.fr
2. INSEE, Dette des administrations publiques au 2e trimestre 2026: insee.fr
3. Direction générale du Trésor, Rapport économique, social et financier 2027, 6 October 2026: tresor.economie.gouv.fr
4. Agence France Trésor, monthly bulletin, August 2026: aft.gouv.fr
5. Agence France Trésor, France’s credit ratings: aft.gouv.fr
6. Trading Economics, France 10-year government bond yield: tradingeconomics.com
7. Trading Economics, Italy 10-year government bond yield: tradingeconomics.com
8. Briefs, French 10-year premium over Italy hits record, 9 October 2026: briefs.co
9. Il Sole 24 Ore, France 10-year OAT yields edge towards 5% on the eve of the 2027 budget: ilsole24ore.com
10. Eurostat, government deficit and debt for 2025, 22 April 2026 (via KSH): ksh.hu
11. European Central Bank, The Transmission Protection Instrument, 21 July 2022: ecb.europa.eu
12. Hanno Lustig, Le Boomer Spread, The Two Cents: substack.com
13. France Épargne, AFT plans record €340bn of borrowing in 2027: france-epargne.fr
14. Tech Times, France bond yields top Italy and Greece as ECB rescue tool is blocked, 5 October 2026: techtimes.com