There is a way never to make a choice: let arithmetic decide for you. France has practiced this art with remarkable consistency for fifteen years. The result is mechanical, documented, and visible in any FIPECO fact sheet: when the apparent interest rate on debt exceeds nominal growth, each year without a primary surplus increases the burden without requiring a single new decision. This is what economists call the snowball effect. In 2026, this mechanism is back.
The real subject of the French budget debate is a choice about distribution. Who pays for the adjustment: retirees, through lower pension revaluations? Workers, through higher taxes? Or future generations, through debt that swells each year without explicit decision? This choice is already being made, by default, in the space left empty by the absence of a multi-year budgetary framework.
The Essentials
French public debt reaches 115.6% of GDP at the end of 2025, compared to 63.5% for Germany, according to FIPECO. The primary deficit remains at 2.9% and the OFCE forecasts debt at 119.8% of GDP in 2027. The novelty in 2026 is that the apparent interest rate on debt has exceeded the nominal growth rate, reactivating the snowball effect: debt grows mechanically, regardless of any new budgetary vote. Countries that have restored their fiscal sustainability have done so by explicitly linking expenditures and revenues over a multi-year horizon, by naming the distribution of effort among social groups.
The Gap with Germany Tells Fifteen Years of Choices
Fifty-two percentage points of GDP: that is the chasm separating French public debt from German public debt at the end of 2025. A gap of this magnitude does not widen in a single budget. It accumulates over two decades of repeated primary deficits, automatic indexation choices, and chronic inability to stabilize public spending as a proportion of national wealth.
Germany has experienced its own turbulence. It absorbed reunification, the crises of 2008 and 2020. It also put in place, in 2009, the “Schuldenbremse,” the debt brake enshrined in its constitution, which structurally constrains the federal deficit to 0.35% of GDP outside recession. This framework was suspended during the pandemic and then reinstated. The debate over its relaxation agitates the current coalition, proof that a hard rule has political costs. But the trajectory is incomparable: German debt has declined from its post-covid peak, French debt has never begun such a correction.
France is not in a situation of immediate insolvency. Financial markets are financing the debt at rates that remain sustainable for now. But the arithmetic logic changes by orders of magnitude once the apparent interest rate exceeds growth.
When the Interest Rate Exceeds Growth, Each Year Costs
The mechanism is known but rarely explained clearly in public debate. As long as nominal growth exceeds the apparent interest rate on debt, a country can maintain a small primary deficit without its debt progressing as a proportion of GDP: growth “dilutes” the stock mechanically. This was the situation France experienced during several years of low rates.
This regime has ended. According to FIPECO data, the apparent interest rate on French public debt has risen above the nominal growth rate in 2025-2026. Direct consequence: the primary balance needed to stabilize debt rises. With a primary deficit of 2.9% of GDP, France falls far short.
The OFCE forecasts debt at 119.8% of GDP in 2027. This figure results mainly from the persistent primary deficit (2.9% of GDP) combined with rising interest charges: the differential between apparent interest rate and nominal growth rate mechanically amplifies the effect of an already very high debt stock, with no primary surplus to compensate.
The interest charge on French public debt, which stood at around 45 to 55 billion euros in the early 2010s, is now approaching 60 billion annually. This amount crowds out other spending without anyone explicitly voting for this crowding out.
The Choice That Is Not Named
In French budget debates, the question of distributing effort is systematically avoided. There is talk of “recovery,” “efforts at restraint,” of “trajectory toward balance.” Rarely of who actually bears the adjustment.
The adjustment has three and only three main vectors: moderation of spending, an increase in revenues, or delay to future generations through debt accumulation. In practice, all three work simultaneously, but their mix is a political choice that affects distinct social groups.
Pension revaluation is indexed to inflation. The decision to delay, cap, or defer this revaluation represents a direct transfer of purchasing power from retirees to public finances. In France, pensions represent about 14% of GDP, the heaviest item in social spending. Any serious reform of the budgetary trajectory necessarily touches this.
On the workers’ side, mandatory contributions stand at 43.6% of GDP in 2025 according to INSEE, with the figure of 45% corresponding to the Eurostat 2024 measurement, which uses a different scope, placing France among the most heavily taxed developed countries. The space for further significant increases is limited without effects on competitiveness and location decisions. The question of access to financing for businesses and economic actors becomes all the more acute in this context.
As for future generations, they have no representation in the budget debate. They mechanically inherit the accumulated debt without ever having voted for it.
The Methods of Countries That Have Succeeded in Stabilizing
A few countries have traversed comparable public debt crises and emerged from them. Portugal after 2011, Sweden in the 1990s, Canada in the middle of that decade. These examples have little ideologically in common. But they share similar architecture.
In each case, recovery began with a credible multi-year budgetary framework, explicitly linking the expenditure trajectory to that of revenues over several years. In Sweden, the 1996 reform established a multi-year expenditure ceiling voted by Parliament, complemented by a budget surplus rule. The objective was stated, the constraint clear, the distribution of effort negotiated politically before being imposed arithmetically.
Canada proceeded differently but with the same logic: ministries received fixed envelopes and had to prioritize within them, rather than negotiate each line separately. Overall spending fell as a proportion of GDP, without blind cuts.
In France, the Court of Auditors published in February 2026 a report documenting the absence of this type of framework. Multi-year projections exist formally, in the stability programs sent to Brussels. But they do not actually bind annual budgetary decisions. Each finance law starts from scratch without deviations from previous trajectories being explained or sanctioned.
This institutional weakness is documented and known. It is not a fatality.
Without Explicit Management, the 2030s Decade Decides for Itself
The forward-looking dimension is central here, and must be examined with precision rather than treated as a distant horizon.
If the current trajectory is maintained, French public debt would reach approximately 120% of GDP by 2027 according to the OFCE, and continue to progress beyond without primary adjustment. This mechanical progression results from the combination of a persistent primary deficit and the differential between apparent interest rate and nominal growth, applied to an already very high debt stock.
At this horizon, two trajectories stand out.
The first is one of managed adjustment. A government decides to explicitly link expenditures and revenues over a five to seven year horizon, distributes the adjustment effort visibly among social groups, and accepts the political cost of this transparency. This requires an institution that makes deviations visible and politically costly to explain, on the model of the British Budget Responsibility Office or the Swedish Fiscal Council. In this scenario, adjustment is gradual, negotiated, and preserves the capacity for public investment in strategic fields, including priorities like France’s quantum sector that depend on long-term public commitments.
The second trajectory is that of the imposed snowball. The absence of explicit choice maintains the primary deficit. Debt continues to swell. At a certain threshold, markets reassess French sovereign risk, rates rise, the snowball effect accelerates. Adjustment then occurs brutally, under external constraint, either under pressure from financial markets or within an already-opened European excessive deficit procedure. In this case, distribution of effort is no longer negotiated politically: it is imposed in haste, with the inequalities that haste always produces.
These two scenarios are not symmetric in terms of equity. Managed adjustment leaves the democratic choice of who bears the effort. Imposed adjustment confiscates it. The intergenerational issue is real: generations active in 2030 will inherit, depending on the trajectory chosen today, either stabilized debt with a functioning budgetary framework, or debt at 130-140% of GDP to manage at degraded rates.
The signals to watch are few but clear. The evolution of the differential between apparent interest rate and nominal growth is the first barometer: if it widens, the dynamic accelerates. The second is political: does explicit debate about distribution of effort between retirees and workers emerge in parliamentary debate, or is it systematically avoided? The third is institutional: will France equip itself with an independent body to evaluate budgetary trajectories with a mandate to publish and real audience?
Concrete paths forward exist. Indexing spending to nominal growth rather than inflation, for automatic spending items, is a path that has been experimented with in several Nordic countries. It does not eliminate revaluation, it makes it conditional on economic performance. A multi-year expenditure framework voted in Parliament, with ceilings by mission, would make trade-offs visible and deviations politically costly to explain. None of these paths is technically complex. They are politically.
The Risk of a Procedure Advancing Without a Helm
The European excessive deficit procedure opened against France in 2024 has not been closed. It imposes a structural deficit reduction trajectory. In case of non-compliance, the sanctions provided by the European budgetary framework become progressively applicable.
The European framework was reformed in 2023-2024 to provide greater flexibility to states on trajectory, in exchange for credible commitment to medium-term structural plans. France presented such a plan. Its credibility depends on its translation into successive annual finance laws.
This external framework is a constraint, but also a resource. It provides a focal point around which to build internal budgetary consensus. Countries like Italy have used European constraints as a lever for domestic reforms that internal political play made difficult to initiate alone. External constraint can be a catalyst if appropriated politically, and a frustrating obstacle if experienced as imposition.
The open question is this: will France find in its own institutions, or in the external constraint of the European framework, a mechanism that makes budgetary choice explicit rather than by default? The tools exist. Comparative examples show they work. What is missing is the decision to equip itself with them.
Sources
- FIPECO, The amount and evolution of public debt
- OFCE, Economic forecasts 2026-2027 (macroeconomic perspectives and public finances)
- Court of Auditors, Report on public finances, February 2026
- National Institute of Statistics and Economic Studies (INSEE), Accounts of public administrations 2024-2025
- INSEE – Public debt 115.6% of GDP end of 2025
- OFCE – April 2026 forecasts (debt 119.8% in 2027)
- FIPECO – Interest charges and apparent rate 2025
- EU Council – Excessive deficit procedure France (July 26, 2024)
- Court of Auditors – The state of public finances early 2026 (February 19, 2026)
- German Basic Law – Schuldenbremse 2009