The France and USA credit rating | Creditworthiness erosion: When the debt crisis of democratic nations accelerates

The United States loses its AAA credit rating after almost a century from all major rating agencies – France becomes the European epicenter of a debt crisis

The recent downgrades of the United States and France's credit ratings by the leading rating agencies mark a historic turning point in the global financial architecture. In October 2025, the German rating agency Scope downgraded the US from AA to AA-, meaning that for the first time in history, all three major agencies – Moody's, Standard & Poor's, and Fitch – withdrew the United States' top credit rating. Almost simultaneously, the situation in France deteriorated dramatically when both Fitch and Standard & Poor's downgraded the credit rating of the Eurozone's second-largest economy. These parallel developments on both sides of the Atlantic reveal fundamental distortions in the public finances of developed democracies, the causes of which extend far beyond simply exceeding debt-to-GDP ratios.

The significance of these events can hardly be overstated. The United States has been in a government shutdown caused by Republicans and Democrats since October 2025, which strikingly documents the dysfunctionality of the political system. National debt exceeded the $38 trillion mark for the first time in October 2025, with more than $1 trillion added between August and October alone—the fastest debt increase outside of the pandemic period. In France, in September 2025, the government of Prime Minister François Bayrou collapsed over an austerity budget that was intended to curb new borrowing, exposing political fragmentation and the impossibility of fiscal reform. These developments are not isolated phenomena, but symptoms of a profound crisis of confidence in the ability of Western democracies to meet their fiscal challenges.

The analysis of this dual debt crisis reveals a complex web of fiscal, institutional, and political factors. In the US, it is not only the absolute debt levels of 124 percent of gross domestic product that drive the rating agencies' decisions, but above all the structural inability of the political system to contain deficits. The Congressional Budget Office projects that the deficit will rise to an average of 7.8 percent of GDP by 2030 and the debt-to-GDP ratio will reach 140 percent. Interest payments on government debt exceeded one trillion dollars for the first time in fiscal year 2025, surpassing spending on defense or Medicare. In France, the debt-to-GDP ratio is 114 percent, the deficit is between 5.4 and 5.8 percent, and political fragmentation prevents any substantial reform efforts. Interest costs on French government debt reached €67 billion in 2025 and could rise to €100 billion by 2028 – more than all ministries spend combined.

The downgrades by the rating agencies are more than just technical adjustments in the assessment of credit risks. They signal a fundamental shift in the perception of the sustainability of Western public debt and reflect the realization that the political and institutional prerequisites for a return to sustainable public finances are increasingly eroding. Scope explicitly justified the US downgrade with the ongoing deterioration of public finances and a weakening of governance standards, in particular the erosion of established checks and balances and the increasing concentration of power in the executive branch, coupled with legislative paralysis due to polarization. In the case of France, the agencies pointed to political instability, growing polarization, and the improbability of reducing the budget deficit below three percent by 2029.

This analysis, divided into eight sections, will examine the complex dimensions of this debt crisis. It will trace the historical development of the current situation, analyze the fundamental drivers and market mechanisms, provide a data-driven assessment of the present circumstances, and comparatively examine the specific challenges in the US and France. Subsequently, the economic, social, and systemic risks will be critically evaluated before outlining possible future scenarios and potential disruptions. The analysis concludes with a synthesis of the strategic implications for policymakers, investors, and the international financial architecture.

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How four decades of fiscal expansion and political shortsightedness have eroded the foundations of public debt

The current debt crisis in the US and France is the result of long-term structural developments spanning several decades. In the United States, the transformation of fiscal policy began in the early 1980s under President Reagan, when a combination of tax cuts and increased military spending led to a structural rise in deficits. The debt-to-GDP ratio, which had reached a historic low of 31.8 percent in 1981, subsequently rose steadily. A brief period of consolidation in the late 1990s under President Clinton, when the US benefited from the dividends of the Cold War and the technology boom, proved to be an exception to an otherwise consistent trend of increasing debt.

The financial crisis of 2008–2009 marked a qualitative leap in debt dynamics. The fiscal response to the Great Recession—including the $787 billion American Recovery and Reinvestment Act of 2009—drove the debt-to-GDP ratio from around 60 percent in 2007 to over 100 percent in 2012. While other developed economies undertook consolidation efforts in the following years, U.S. fiscal policy remained expansionary. The COVID-19 pandemic led to another massive expansion of debt in 2020–2021, with the debt-to-GDP ratio briefly reaching 130 percent. Crucially, however, unlike previous crises, no substantial consolidation followed the pandemic. The One Big Beautiful Bill Act, passed in July 2025, dramatically worsened the situation by making the 2017 tax cuts permanent and introducing additional tax relief, which the Congressional Budget Office estimates will increase deficits by $3.4 trillion over ten years – or $5.5 trillion if the temporary measures are extended.

The institutional framework of US fiscal policy has deteriorated in parallel with debt levels. The debt ceiling drama, which has regularly led to budget crises since the 2010s, illustrates the dysfunctional nature of the budget process. Increasing polarization between Republicans and Democrats has undermined Congress's ability to find consensual solutions to long-term fiscal challenges. The concentration of power in the executive branch, explicitly identified by rating agencies as a governance problem, reflects a broader erosion of checks and balances in the American political system.

In France, fiscal developments follow a different, but equally worrying, pattern. The French debt-to-GDP ratio was around 20 percent in 1980 and rose to approximately 55 percent by 1995. After the introduction of the euro in 1999, the ratio initially stabilized, as France attempted to comply with the Maastricht criteria, albeit with repeated violations. Since 1999, France has exceeded the deficit limit of three percent of GDP in most years. The financial crisis of 2008–2009 pushed the debt-to-GDP ratio above 80 percent, and a continuous upward trend has been observed since then. Unlike Germany, which pursued strict consolidation after the euro debt crisis and reduced its debt-to-GDP ratio from 81 percent in 2010 to below 65 percent, France has never reduced its debt.

The COVID-19 pandemic further exacerbated France's debt situation. The debt-to-GDP ratio reached 114 percent in 2024, and the absolute volume of debt exceeded €3.3 trillion—more than any other EU country. Particularly problematic is the structure of French public spending, which, at 57 percent of GDP, is among the highest in Europe, compared to 49.5 percent in Germany. This high level of spending reflects a generous social welfare system, early retirement, and a bloated public sector. President Macron's attempts to implement structural reforms—especially the controversial 2023 pension reform, which raised the retirement age from 62 to 64—met with massive political resistance and were ultimately suspended in October 2025.

France's political fragmentation intensified after the snap parliamentary elections of summer 2024, which split parliament into three blocs: the left-wing alliance, Macron's center-right coalition, and the far-right National Rally. None of these blocs holds a governing majority, leading to a series of government crises. Within a year, France had five different prime ministers. The inability to reach a consensus on an austerity budget led to the fall of the Bayrou government in September 2025 and illustrates the system's structural inability to reform.

The historical development in both countries reveals a common pattern: a combination of demographic change, rising social spending, insufficient tax revenues, political short-sightedness, and a lack of institutional mechanisms to enforce fiscal discipline has led to a continuous accumulation of debt. The lesson from the European sovereign debt crisis of 2010-2012—that high debt combined with political instability can lead to exponentially rising refinancing costs—has apparently not been internalized in either Washington or Paris.

Political fragmentation, demographic time bombs, and the mechanisms of fiscal dominance

The analysis of the core factors driving the current debt crisis reveals a complex interplay of economic, demographic, and political dynamics. At its core lies the question of why democratic systems systematically fail to defend long-term fiscal sustainability against short-term political incentives.

The primary economic driver is the structural divergence between revenues and expenditures. In the United States, federal revenues will average about 18 percent of GDP over the next ten years, while expenditures will average 24 percent. This six-percentage-point gap cannot be explained by cyclical fluctuations but reflects fundamental structural imbalances. The One Big Beautiful Bill Act exacerbated this situation by implementing $4.5 trillion in tax cuts over ten years, while spending reductions—mainly in Medicaid and social benefits—amount to only $1.4 trillion. The result is a structural primary deficit, where even before interest payments, expenditures exceed revenues.

The demographic component significantly exacerbates this dynamic. In the US, the large baby boomer generation will begin retiring in the coming years, dramatically increasing spending on Social Security and Medicare. Current projections indicate that the Social Security Trust Fund will be depleted by 2033, which would result in automatic benefit cuts of 23 percent if no legislative changes are made. The unfunded liabilities of Social Security and Medicare combined exceed $75 trillion over a 75-year horizon. This demographic time bomb is not reflected in official debt statistics because the US government is not legally obligated to pay future benefits until they become due. This creates a fiscal illusion that systematically underestimates the true scale of these long-term commitments.

In France, the demographic challenge is manifested in the structure of the pension system. With a retirement age of 62—compared to 67 in Germany and Italy and 66 to 67 in the United Kingdom—France has one of the most generous pension systems in Europe. The suspension in October 2025 of Macron's pension reform, which would have gradually raised the retirement age to 64, will cost the system an additional €1.8 billion by 2027. This politically motivated decision, aimed at avoiding another government crisis, illustrates the dominance of short-term political calculations over long-term fiscal necessities.

Interest payments on existing debt have become a fiscal driver in their own right. In fiscal year 2025, the United States paid over $1 trillion in interest on its national debt for the first time—17 percent of total federal spending. These interest costs already exceed defense spending and are projected by the CBO to reach $1.8 trillion annually by 2035. Interest payments as a percentage of GDP will rise from 3.2 percent in 2025 to 4.1 percent in 2035, breaking all previous records. A substantial portion of US debt—over 20 percent—will need to be refinanced in fiscal year 2025, making the country highly vulnerable to interest rate changes.

Interest rate developments in France are particularly worrying. Yields on ten-year French government bonds rose from 3.20 percent in June 2025 to 3.49 percent in September 2025. For the first time since the euro crisis, France is paying higher interest rates than Italy, signaling a fundamental shift in market risk perception. The yield spreads of French bonds over German Bunds – traditionally the safest haven in the eurozone – have increased dramatically. This development is especially problematic given France's financing needs for 2026 of over €300 billion, of which €175.8 billion is for refinancing maturing debt.

The political incentive systems in both countries systematically favor short-term spending expansion over long-term consolidation. In the US, increasing party polarization has made any consensus on fiscal reform impossible. Republican politicians have positioned themselves against any tax increases, while Democratic politicians oppose spending cuts on social programs. The result is a political stalemate in which the only agreement is to postpone the problem to the next legislative term. The erosion of institutional norms—exemplified by repeated government shutdowns and debt ceiling crises—has fundamentally damaged the system's ability to perform basic governance functions.

In France, the fragmentation of the party system has made any stable majority formation impossible. The extreme wings – both left and right – have veto power over any reform attempts without offering any constructive alternatives themselves. The result is a policy of the lowest common denominator, in which substantial reforms are systematically blocked. The fact that France had five different prime ministers within a single year underscores the instability of the system.

The market mechanisms that should discipline these developments are only partially effective. Theoretically, rising debt ratios should lead to higher risk premiums and interest rates, forcing governments to consolidate. In practice, however, the exceptionally low interest rates of the 2010s and the massive bond-buying programs of central banks have effectively disabled this disciplining mechanism. The European Central Bank created an explicit instrument, the Transmission Protection Instrument, to limit yield spreads between euro area countries, further weakening market discipline. In the US, the Federal Reserve's bond-buying programs during and after the pandemic have had a similarly disciplining effect.

The interplay of these factors – structural deficits, demographic pressures, rising debt burdens, dysfunctional policies, and weakened market discipline – creates a self-reinforcing dynamic in which debt sustainability is increasingly eroding. Rating agencies have recognized this fundamental shift and responded with downgrades.

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Interest costs are eating away at the budget: Consequences for the state and citizens – Image: Xpert.Digital

Deficit explosion, interest rate shock and the illusion of political agency

The current fiscal situation of the United States and France can be precisely assessed using a number of quantitative indicators that illustrate the extent of the structural challenges.

In the United States, the budget deficit reached $1.8 trillion, or 6.2 percent of GDP, in fiscal year 2025. This deficit is remarkable because it occurs despite relatively robust economic growth and low unemployment—conditions under which the deficit would historically have been significantly lower. The Congressional Budget Office projects that deficits will average 6.1 percent of GDP over the next decade, rising from $1.7 trillion in 2025 to $2.6 trillion in 2034. The debt-to-GDP ratio, measured as government debt as a percentage of GDP, is currently around 100 percent and is projected to reach 118 percent by 2035—higher than at any time in U.S. history outside of World War II.

Gross national debt reached $38 trillion in October 2025, up from $37 trillion in August. This $1 trillion increase in just two months is partly due to catch-up effects following the debt ceiling crisis, but it underscores the rapid acceleration of debt growth. Per capita debt now stands at $109,000 for each of the 347 million residents. Particularly worrying is the development of interest payments. In fiscal year 2025, interest payments exceeded $1 trillion for the first time, accounting for 17 percent of total spending. By comparison, defense spending was approximately $900 billion and Medicare about $700 billion.

The composition of spending highlights the structural constraints. In 2025, Social Security cost approximately $1.5 trillion, Medicare over $1.1 trillion, and Medicaid around $600 billion. These three programs, along with interest payments, already account for over 70 percent of the federal budget. Discretionary spending—both for defense and civilian programs—is increasingly under pressure in this context. The One Big Beautiful Bill Act further exacerbated the situation by increasing deficits by $3.4 trillion over ten years, which could rise to over $5.5 trillion if temporary measures are extended.

In France, the debt-to-GDP ratio stands at 114 percent, with absolute debt reaching €3.35 trillion – the highest in the European Union. The budget deficit amounted to 5.8 percent of GDP in 2024 and is projected to be 5.4 percent in 2025. The Lecornu government is targeting a deficit of 4.7 to 5.0 percent for 2026, a figure considered overly optimistic by independent observers. Financing needs for 2026 are estimated at €305.7 billion, of which €175.8 billion is for refinancing maturing debt. Gross new bond issuance is estimated at €310 billion.

Interest payments on French government debt reached approximately €67 billion in 2025, exceeding total military spending. Finance Minister Lombard warned that these costs could rise to €100 billion by 2028, more than all ministries combined spend. The yield on ten-year French government bonds is 3.49 percent, compared to around 2.2 percent for German Bunds. For the first time since the euro crisis, France is paying similar or even higher interest rates than Italy, whose debt-to-GDP ratio stands at 137.9 percent. This development reflects a fundamental reassessment of French credit risk by the markets.

The structure of French public spending reveals the challenges of consolidation. At 57 percent of GDP, public spending is among the highest in Europe. Social spending, particularly pensions and healthcare, accounts for a significant portion. The suspension of pension reform will cost an additional €2.2 billion by 2027. The draft budget for 2026, presented by the Lecornu government, projects savings of €30 billion – considerably less than the €44 billion targeted by his predecessor, Bayrou. Some experts argue that savings of €100 billion would be necessary to truly stabilize the debt.

Rating developments reflect this fiscal reality. In the US, Moody's downgraded France's credit rating from Aaa to Aa1 in May 2025, following Standard & Poor's withdrawal of its AAA rating in 2011 and Fitch's own downgrade in 2023. The most recent downgrade by Scope to AA- in October 2025 underscores the accelerating loss of confidence. In France, Fitch downgraded its credit rating from AA- to A+ in September 2025, followed by Standard & Poor's in October, which also lowered its rating from AA- to A+. While Moody's did not lower its rating itself in October 2025, it did lower its outlook from stable to negative. This places France on par with Spain, Japan, Portugal, and China.

The financial markets' reaction to political instability was particularly pronounced in France. The collapse of the government in September 2025 led to a sharp increase in risk premiums. The fact that French government bonds now have yields similar to those of Italian bonds was unthinkable just a few years ago and signals a fundamental shift in risk perception. In the US, the government shutdown beginning in October 2025 further accelerated debt growth, as key fiscal decisions were blocked.

Economic growth momentum offers little comfort. The US is projected to grow by approximately 2.0 to 2.8 percent in 2025, which appears robust but will not significantly reduce deficits. France is struggling with considerably weaker growth and a structural competitive disadvantage compared to Germany and other European partners. This weak growth makes consolidation considerably more difficult, as the debt-to-GDP ratio continues to rise even with moderate deficits, despite low nominal GDP growth.

The current situation is thus characterized by a triad of high debt levels, structurally high deficits, and rising interest burdens, exacerbated by political dysfunction. The quantitative indicators consistently show that both countries are on a fiscally unsustainable path, without any discernible political consensus on the necessary corrective measures.

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Washington and Paris in the mirror: Common patterns despite diverging starting positions

A systematic comparison of the fiscal challenges in the United States and France reveals both structural similarities and fundamental differences in causes, manifestations, and solutions.

The United States possesses fundamental advantages that France does not share. As the issuer of the global reserve currency, the US benefits from exceptional demand for US Treasury bonds. This exorbitant privilege allows the US to borrow at lower interest rates than other countries with comparable debt-to-GDP ratios. The dollar accounts for roughly 60 percent of global foreign exchange reserves, creating a structural demand for US Treasuries that is largely independent of short-term fiscal concerns. This position gives the US significantly greater fiscal flexibility. The depth and liquidity of the US bond markets—the largest in the world—mean that even in the face of substantial fiscal strain, the absorption of large amounts of debt issuance is possible.

France, however, as a member of the Eurozone, has limited monetary sovereignty. The European Central Bank sets monetary policy for the entire currency union, meaning that France cannot reduce its real debt burden through inflation or currency devaluation. French government debt is effectively denominated in a currency over which the country has no direct control. This creates a dynamic more akin to that of emerging markets than to that of the US. The Eurozone sovereign debt crisis of 2010–2012 dramatically demonstrated how quickly refinancing crises can escalate in a currency union when market confidence erodes.

The demographic challenges manifest themselves differently in the two countries. In the US, the central challenge is financing Social Security and Medicare for the aging baby boomer generation. The unfunded liabilities of these programs exceed $75 trillion over 75 years. A critical issue, however, is that these liabilities are not legally binding and could theoretically be adjusted through legislative changes, although this would be extremely difficult politically. In France, the demographic challenge is directly embedded in the structure of the pension system, with a low retirement age and high benefit commitments. The suspension of Macron's pension reform in October 2025 means that this structural challenge will remain unresolved.

The political economy of reform inability follows different logics in the two countries. In the US, the central obstacle is the extreme polarization between the parties. Republicans categorically reject tax increases, while Democrats oppose substantial cuts to social programs. This mutual veto power leads to a stalemate in which only minimal, incremental changes are possible. The repeated government shutdowns and debt ceiling crises illustrate this dysfunction. In France, the deadlock is the result of a fragmentation of the party system into three irreconcilable camps, none of which holds a majority. The extreme wings have veto rights, but they primarily use them destructively, without offering constructive alternatives.

The institutional frameworks differ considerably. The US has no constitutional debt brake and no binding fiscal rules at the federal level. The Budget Control Act of 2011 introduced spending limits, but these have been repeatedly violated or suspended. As an EU member, France is theoretically bound by the Maastricht criteria and the Stability and Growth Pact, which stipulate a maximum deficit of three percent of GDP and a debt-to-GDP ratio of 60 percent. In practice, however, these rules have had little disciplinary effect, as enforcement mechanisms are weak and political considerations often override technical criteria.

Market discipline is at work in both countries, but with different intensity and time horizons. France is currently experiencing a significant increase in risk premiums, with yields approaching Italian levels. This market reaction occurred quickly after the political crisis in September 2025. In the US, however, interest rates remain relatively moderate, albeit rising, despite massive debt levels. The yield on ten-year US Treasuries is around 4.5 percent, which is not historically exceptionally high. The US reserve currency position significantly dampens market discipline but also creates the risk of an abrupt correction if confidence falters.

The scale of the necessary adjustments differs. For the US, the Congressional Budget Office estimates that stabilizing the debt-to-GDP ratio at current levels over the next decade would require savings or increased revenue of approximately $6.7 trillion. A return to the historical average debt-to-GDP ratio of 80 percent would require adjustments of about $15 trillion. For France, experts believe savings of €100 billion would be necessary to sustainably stabilize the debt, while the current government is only aiming for €30 billion. Relative to economic output, the necessary adjustments in both countries are of a similar magnitude—roughly 8 to 10 percent of spending over several years.

The timeframes for adjustments also differ. For the US, economists warn that the country has roughly 20 years to implement corrective measures before debt dynamics become uncontrollable. This, however, assumes that markets continue to believe that timely corrections will occur. In France, the window of opportunity is considerably narrower, as the country, being a member of the Eurozone, is more vulnerable to crises of confidence and already pays substantial risk premiums. The International Monetary Fund warned that France's debt-to-GDP ratio could rise to 128 percent by 2030 if no substantial reforms are implemented.

The roles of central banks differ fundamentally. The Federal Reserve can theoretically buy US Treasury bonds to dampen interest rate increases, although this raises concerns about its independence and carries inflation risks. The ECB has created an explicit tool, the Transmission Protection Instrument, to limit yield spreads between euro area countries. However, its application is subject to conditions, including compliance with EU fiscal rules. In the case of France, the ECB could intervene if contagion effects threaten other euro area countries, but would likely hesitate to intervene in purely French fiscal problems.

A crucial difference lies in their reform history. France has repeatedly attempted to implement structural reforms in recent decades—pension reforms, labor market reforms, privatizations—but these have regularly failed due to social resistance or have been significantly watered down. The US, on the other hand, has not implemented any substantial fiscal reforms since the Clinton years. The 2017 tax reform and the One Big Beautiful Bill Act of 2025 have even exacerbated the situation. Both countries thus share a fundamental inability to reform, stemming from different political dynamics but leading to similar outcomes.

Between repression and catastrophe: The multiple dimensions of systemic vulnerability

The risks associated with the current debt dynamics in the US and France extend far beyond the immediate fiscal challenges and touch upon fundamental issues of economic stability, social cohesion and systemic resilience.

The central economic risk is the danger of a self-reinforcing debt spiral. If interest costs rise faster than nominal GDP growth, the debt-to-GDP ratio will continue to climb even with balanced primary balances. The United States is approaching this critical point. With interest costs exceeding one trillion dollars annually and a structural primary deficit of several hundred billion dollars, the dynamics are already alarming. The Congressional Budget Office projects that, without corrections, the debt-to-GDP ratio could reach 175 percent by 2054. Some analyses warn that at a debt-to-GDP ratio exceeding 200 percent, sustainability is no longer guaranteed, even for the US.

The situation is more acute for France. The International Monetary Fund warns of a fiscal and financial vicious cycle in which concerns about public finances could spill over into the banking sector and trigger a self-reinforcing crisis. The European sovereign debt crisis of 2010-2012 demonstrated this mechanism: rising government bond yields weakened banks holding large amounts of government bonds, which in turn burdened the states that had to bail out their banks. French banks hold significant amounts of French government bonds, making this contagion risk very real.

The crowding-out risk is already visible. Rising government debt is crowding out private investment, as government borrowing competes with private investors for limited savings. The Congressional Budget Office estimates that projected debt levels could reduce long-term US GDP by about a third, equivalent to a loss of $14,500 per person per year. For France, the high interest burden means less money is available for productive investment in infrastructure, education, or innovation, further weakening its structural competitiveness.

Inflation risks are complex and contested. High debt in itself does not automatically lead to inflation, as long as central banks remain independent and pursue a strict price stability policy. However, as debt grows, political pressure increases on central banks to use monetary policy to support government financing—a phenomenon known as fiscal dominance. If markets begin to believe that central banks will abandon their inflation target to reduce debt burdens, inflationary expectations can be unleashed, triggering an actual inflationary spiral. The repeated attacks on the independence of the Federal Reserve by political actors illustrate this danger.

The social risks are considerable. Substantial fiscal adjustments—whether through spending cuts or tax increases—have distributive consequences that can exacerbate social tensions. The European austerity programs after 2010 led to massive social protests, rising unemployment, and the rise of populist movements. In France, the social willingness to make sacrifices for fiscal consolidation is already exhausted, as demonstrated by the Yellow Vest protests of 2018–2019 and the protests against the 2023 pension reform. In the US, significant cuts to Social Security or Medicare would face massive resistance, as millions of people have built their retirement savings on them.

The political risks include the further erosion of democratic institutions. Repeated fiscal crises and government shutdowns undermine citizens' trust in the functioning of democratic systems. In France, serial instability—five prime ministers in one year—has fundamentally shaken confidence in the Fifth Republic. The inability to fulfill basic governance tasks, such as passing a budget, delegitimizes the political system and creates space for anti-democratic alternatives.

Systemic financial stability risks are particularly worrying. The International Monetary Fund warned in October 2025 of increasing risks of a disorderly market correction. The combination of high asset valuations, low risk premiums despite high risks, and growing geopolitical tensions creates the conditions for a sudden loss of confidence. If markets begin to believe that debt is unsustainable, an abrupt rise in interest rates could occur, triggering a refinancing crisis. Over 20 percent of US debt will need to be refinanced in 2025, which would lead to massively increased interest costs in the event of an interest rate shock.

The risks of contagion between countries are real. A downgrade of French bonds could spread to other highly indebted Eurozone countries like Italy or Spain. A US debt crisis would shake global financial markets, as US Treasuries act as a risk-free anchor for the global financial system. Research on the European sovereign debt crisis shows that rating downgrades can have significant spillover effects on other countries, even if they are not directly affected.

Intergenerational justice issues are becoming increasingly pressing. The accumulation of debt to finance present consumption shifts burdens onto future generations who neither participated in the decisions nor benefit from them. The unfunded liabilities of Social Security and Medicare in the US—over $75 trillion—mean that either future benefits will have to be drastically cut or future taxes massively increased. In France, the inability to reform the pension system means that either future retirees will receive lower benefits or future workers will have to pay higher contributions.

An underestimated risk is the danger of policy rigidity. High debt burdens and rising interest costs reduce the fiscal leeway for countercyclical policy in future crises. If the US or France fall into a deep recession, the ability to respond with fiscal stimulus will be severely limited. This could lead to more severe and prolonged recessions. The COVID-19 pandemic demonstrated the importance of fiscal capacity in crises. Future pandemics, financial crises, or geopolitical shocks could hit countries already under maximum fiscal strain.

The controversial debates revolve around the pace and composition of necessary adjustments. Proponents of rapid consolidation argue that delays only exacerbate the necessary adjustments and increase the risk of a crisis. Opponents warn that austerity is counterproductive during economically weak times and can even increase the debt-to-GDP ratio through reduced growth. Empirical literature shows that fiscal multipliers—the extent to which GDP falls due to spending cuts—are higher in recessions and low interest rates than in boom periods. This implies that consolidation has a procyclical effect and that timing is crucial. Resolving this dilemma requires a careful balance between credibility and preserving growth, which is politically difficult to achieve.

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Between gradual decline and abrupt crisis: Diverging future paths for indebted democracies

Projecting possible development paths for the United States and France must consider both gradual trends and potential disruptions. The range of plausible scenarios extends from slow but controlled adjustment to acute financial crises with systemic effects.

The optimistic scenario of successful fiscal consolidation seems unlikely under current conditions, but it is not impossible. For the US, this would require a political compromise in which both parties make substantial concessions—Republicans would accept revenue increases, Democrats reforms to entitlement programs. Historical precedents, such as the consolidation of the 1990s under Clinton, show that this is possible, albeit under considerably more favorable conditions—strong economic growth, the post-Cold War peace dividend, and the beginnings of a technology boom. A modern version could include a combination of closing tax loopholes, moderate tax increases for top earners, gradual increases in the retirement age, and efficiency improvements in the healthcare system.

For France, successful consolidation would require a grand coalition willing to push through unpopular reforms against the resistance of extremists. This could include raising the retirement age, public sector reforms, labor market deregulation, and a modernization of the tax system. The model could be the successful reforms in Germany under the Schröder red-green government in the early 2000s, which were painful but restored Germany's competitiveness. The probability of this scenario is low, but not zero. A catalyst could be an acute crisis that forces a consensus on the need for reforms.

The most likely scenario is a continuation of the current pattern—the muddle-through scenario of gradual decline. In the US, this would mean deficits remaining at six to eight percent of GDP, the debt-to-GDP ratio gradually rising to 140 to 150 percent by 2035, and interest payments consuming an increasing share of the budget. Periodic debt ceiling crises and government shutdowns would continue to cause turbulence but would not trigger a fundamental course correction. The reserve currency position would persist but gradually erode as other countries—China, Europe—seek to develop alternatives to the dollar. This scenario is not a stable equilibrium but a gradual decline that is ultimately unsustainable but could persist for decades.

For France, the muddle-through scenario would mean serial minority governments passing minimal budgets but failing to implement structural reforms. The debt-to-GDP ratio would rise to 120-130 percent, risk premiums would remain elevated, and economic growth would lag behind other EU countries. The ECB would prevent a complete market collapse through flexible application of the Transmission Protection Instrument, but would not resolve the structural problems. This scenario would gradually lower French living standards and weaken the country's position within the EU.

The pessimistic scenario of an acute financial crisis is possible for both countries, albeit with different triggering mechanisms. For the US, a debt ceiling crisis could be a catalyst, involving an actual technical default that fundamentally undermines confidence in US Treasuries. Alternatively, an external shock—a deep recession, a geopolitical crisis, or a collapse of the dollar as a reserve currency—could destabilize debt dynamics. Economists warn that if confidence in the US's ability or willingness to service its debt is lost, interest rates would rise rapidly, potentially triggering a refinancing crisis. With over 20 percent of the debt requiring annual refinancing, an interest rate increase of two to three percentage points would raise annual interest costs by hundreds of billions of dollars.

For France, the crisis scenario is more likely and resembles the Greek or Italian experience during the euro crisis. One trigger could be another government collapse, convincing markets that France is incapable of reform. Rising yield spreads over Germany would increase financing pressures, which in turn would necessitate harsher austerity measures that are politically unfeasible. Contagion to the banking sector—French banks hold substantial amounts of French government bonds—could trigger a fiscal and financial vicious cycle. The ECB would likely intervene, but under strict conditions that would require painful reforms. The result would be similar to the Greek bailout programs: massive austerity, a deep recession, and social unrest.

Technological and regulatory disruptions could significantly alter developments. The introduction of central bank digital currencies could fundamentally change monetary policy and create new opportunities for government financing—or risks of increased fiscal dominance. Climate change and its associated fiscal costs—both for adaptation and mitigation—will exacerbate fiscal challenges. Demographic change will accelerate, particularly in France, where the aging population will further strain pension systems.

Geopolitical disruptions pose significant risks. An escalation of trade conflicts between the US and China could dampen global growth and worsen the fiscal situation. A larger conflict—for example, over Taiwan—would mean massive defense spending and disruption of global supply chains. For Europe, an escalation of the Ukraine conflict or new security threats would require substantial additional defense spending, which would clash with already strained budgets.

The radical scenario of debt restructuring or partial defaults is virtually unthinkable for the US, but not entirely out of the question. Historically, even developed countries have occasionally restructured their debts – Great Britain after the Napoleonic Wars, the US in the 1930s through gold devaluation. A modern variant could be the forced conversion of bonds to lower interest rates or longer maturities. For France, restructuring within the Eurozone context is extremely difficult, as it would destabilize the monetary union. However, the Greek experience of 2012 – a partial default with a 50 percent debt write-off for private creditors – shows that restructuring is possible even within the Eurozone, albeit with massive economic and social costs.

An often overlooked scenario is the slow monetization of debt through persistently high inflation. If inflation rates remain at four to five percent for several years, while nominal interest rates rise only moderately, this would significantly reduce the real debt burden. This would be a form of financial repression—savers and bondholders would lose real value, while the state would benefit. Historically, many countries—including the US after World War II and the UK in the 1970s—have partially reduced high levels of debt through inflation. However, this requires central banks to weaken their inflation targets, which would create fundamental credibility problems.

The timeframes for different scenarios vary considerably. According to experts, the US still has roughly one to two decades of leeway for adjustments before the dynamics become uncontrollable. However, this only holds true if markets maintain confidence. An abrupt loss of confidence could drastically shorten this timeframe. For France, the timeframe is significantly shorter – possibly only a few years before an acute crisis erupts if no substantial reforms are implemented.

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Imperatives for action in a fiscally exhausted world

The analysis of the parallel debt crises in the United States and France reveals fundamental shifts in the global financial architecture and the sustainability of Western democracies. The downgrades by all major rating agencies not only mark technical adjustments in credit assessments but also reflect a profound loss of confidence in these countries' ability to manage their fiscal challenges.

The key findings can be summarized in several dimensions. First, the crisis extends far beyond the mere level of debt. While the US, with a debt-to-GDP ratio of 124 percent, and France, with 114 percent, are both heavily indebted, these figures are not unprecedented – Japan functions with a debt-to-GDP ratio exceeding 250 percent. The crucial difference lies in the combination of high debt, structurally large deficits, rising interest payments, and, above all, the political inability to implement corrective measures. The rating agencies have explicitly cited the erosion of governance standards, the weakening of institutional checks and balances, and increasing polarization as key reasons for their downgrades.

Second, the drivers of debt dynamics are self-reinforcing. Rising debt leads to higher interest payments, which in turn increase deficits and necessitate further borrowing. The US paid over $1 trillion in interest in 2025—more than for defense or Medicare—and these costs are projected to rise to $1.8 trillion annually by 2035. In France, interest payments already exceed total military spending and could reach €100 billion by 2028—more than all government ministries combined. This interest burden crowds out productive spending and reduces fiscal space for future investments or countercyclical policies.

Third, demographic challenges are massively underrepresented in official debt statistics. The unfunded liabilities of Social Security and Medicare in the US exceed $75 trillion. In France, a pension system with a retirement age of 62—compared to 67 in Germany—means structurally higher burdens that can only be addressed through fundamental reforms. The suspension of Macron's pension reform illustrates how short-term political calculations dominate over long-term fiscal necessities.

Fourth, the systemic risks are substantial and globally interconnected. A US debt crisis would shake global financial markets, as US Treasuries act as the system's risk-free anchor. A French crisis could have contagion effects on other highly indebted Eurozone countries and jeopardize the stability of the monetary union. The International Monetary Fund explicitly warns of rising risks of a disorderly market correction and a fiscal-financial vicious cycle.

The strategic implications for various actors are far-reaching. For policymakers in the US, the situation calls for a bipartisan compromise that encompasses both revenue increases and spending discipline. This could involve a combination of closing tax loopholes, moderate tax increases, phased adjustments to Social Security and Medicare, and strict spending caps. Creating an independent fiscal commission with broad powers—similar to the Simpson-Bowles recommendations of 2010—could help overcome political gridlock. Crucially, reforms must be implemented gradually and with ample lead time to avoid abrupt shocks and allow for adjustments.

For France, the situation requires a grand coalition prepared to push through unpopular reforms despite opposition from extremists. This should include reviving pension reform while simultaneously negotiating a more comprehensive social contract that fairly distributes the burden. Labor market reforms, deregulation, and public sector modernization should be linked to investments in education and innovation to strengthen competitiveness. Crucially, fiscal credibility with the markets must be restored to reduce risk premiums and prevent contagion effects.

For the European Union, the French crisis necessitates a reassessment of fiscal governance mechanisms. The existing rules—a deficit limit of three percent and a debt-to-GDP ratio of 60 percent—have clearly failed. Reform could include stricter enforcement mechanisms, automatic sanctions for violations, and greater flexibility for productive investment. The role of the ECB and the Transmission Protection Instrument must be clarified—when and under what conditions will the ECB intervene, and what fiscal conditions will be imposed?.

For investors, these developments imply a reassessment of the risk associated with government bonds previously considered safe. The era in which US Treasuries and French OATs were considered virtually risk-free is over. Diversification across currencies and regions is becoming more important. Investors should actively assess fiscal sustainability and not blindly rely on implied guarantees. The risk of abrupt market reassessments has increased, which can lead to sudden volatility and losses.

For multilateral institutions like the IMF, the situation implies a need to act preventively rather than reactively. Developing early warning systems for fiscal crises, providing technical assistance for fiscal reforms, and preparing for potential bailout scenarios are essential. The IMF should also advance the debate on reforming the global financial architecture, including mechanisms for orderly sovereign debt restructuring.

The long-term importance of this issue can hardly be overstated. The ability of Western democracies to manage their fiscal challenges is fundamental to their global standing and internal stability. Failure would not only entail economic costs but also call into question the model of liberal democracy. Authoritarian systems like China would interpret this as proof of the superiority of their model. The coming years will show whether democratic systems are capable of resolving long-term structural problems or whether they remain trapped in short-term political calculations.

A final assessment must be sobering. Both countries are on fiscally unsustainable paths. The likelihood of voluntary, timely, and sufficient corrections is slim. The most probable scenario is a gradual decline, punctuated by periodic crises that each necessitate incremental adjustments without addressing the fundamental problem. The alternative—a major, visionary reform effort that combines fiscal sustainability with social justice and economic dynamism—would require exceptional political leadership and societal consensus. Given the current political fragmentation, this seems utopian. The rating downgrades are thus not merely warning signals, but harbingers of a slow-developing crisis that will take decades to resolve—if it is resolved at all.

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