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Ask most investors which rich economy is nearest to a sovereign debt crisis and the answer comes back almost instantly: Japan. The debt pile is the largest in the developed world relative to output, so the logic seems unbeatable. Yet markets have spent the past few weeks pointing somewhere else entirely. In early October, France’s 10-year borrowing cost briefly pushed above 5%, a level the country had not seen since 2002, while Tokyo continued to borrow at a fraction of that rate.
That gap is not a market error. It reflects something the headline debt ratios hide. A government rarely goes broke simply because it owes a lot. It goes broke when the people funding it stop rolling over its loans and nobody with deep enough pockets steps in. Seen through that lens, the G7 ranking looks very different, and the country at the front of the queue is not the one most people would guess.
The Debt League Table Is the Wrong Starting Point
Every G7 government funds itself the same way. It sells bonds, and when those bonds mature, it repays them by selling new ones. Almost none of these countries ever intends to pay its debt down to zero. Solvency therefore depends less on the size of the stock and more on whether the flow of new lending keeps arriving.
That gives us three questions that matter far more than any debt-to-GDP chart. Who are you borrowing from? In whose currency are you borrowing? And when lenders lose patience, how quickly can your political system change direction to win them back? Run all seven economies through those three filters and the picture sharpens fast.
Test One: Who Holds the Paper
Japan’s government debt sits at roughly double the size of its economy, the heaviest load in the rich world. Yet it pays the lowest interest rate of the group, around 3% on ten-year money. The reason is ownership. Only a small slice of Japanese government bonds, under a tenth, sits with foreign investors. The rest belongs to domestic banks, insurers and pension funds, and the single biggest holder, with close to half the market, is the Bank of Japan itself.
That changes everything. A lender that can create yen will never refuse to buy yen-denominated debt in a panic, and foreign creditors are too small a group to force a crisis by leaving. If you want a deeper explanation of how this circular lending works, our earlier piece on who all these indebted countries actually owe money to walks through the mechanics.
Japan does not escape for free, though. The cost shows up in the currency rather than in a default. In late June and July, the yen slid to its weakest level against the dollar since 1986. Anyone holding savings in yen is quietly paying for the government’s financing model through lost purchasing power. Japan passes the first test, but its savers carry the bill.
Test Two: Whose Currency Is It
The United States looks frightening on paper. Interest costs crossed the trillion-dollar mark in the last budget year, now exceeding what Washington spends on either defence or Medicare. Roughly one dollar in every five collected in tax goes straight back out as interest.
Still, America owes dollars, and the Federal Reserve creates dollars. A government that borrows exclusively in a currency its own central bank issues cannot be forced into involuntary default. The trade-off, as with Japan, is that the currency can be debased if the central bank is leaned on too heavily. Compare that with Greece in 2015, which owed euros it had no ability to print. When outside support was withdrawn, Greek banks ran short of cash within days.
There is one American catch, and it is self-inflicted. The US has a statutory cap on its own borrowing. The national debt crossed $40 trillion in August, and the Bipartisan Policy Center expects the $41.1 trillion limit to be reached between late winter and mid-summer 2027. The Treasury can juggle accounts for a few months beyond that point, but if Congress refuses to act, the one G7 country that can always pay could choose not to. Keep 2027 in mind; it becomes important later.
Germany and Canada: Passing on Strength
Germany technically fails the first two tests. About half its debt sits abroad and it borrows in euros, which it cannot create. What rescues Berlin is sheer balance-sheet strength. Its debt is roughly two-thirds of output, far below every other member of the group, and it holds a top-tier credit rating. When money fled French bonds in early October, it ran straight into German ones. Germany is spending some of that advantage, having loosened its constitutional debt brake in 2025, but it still has more room than anyone else.
Canada is the quiet outlier. Its gross government debt looks high once provincial borrowing is included, but net out the enormous financial assets held by its public pension funds and the burden shrinks to the lowest in the G7. Ottawa also borrows in its own currency. On a clean-books basis, Canada is the safest of the seven.
Test Three: How Fast Can a Government Change Its Mind
Britain offers the best case study of what happens when lenders lose faith suddenly. In 2016, then Bank of England governor Mark Carney warned that the UK depended on the “kindness of strangers” to cover its external shortfall. Six years later, those strangers ran out of patience.
In September 2022, a new government unveiled roughly £45 billion of unfunded tax cuts. Gilt yields jumped by nearly a full percentage point within three trading days, sterling briefly fell to about $1.03, and leveraged pension funds were forced into a fire sale of their own bonds. On the fifth day, the Bank of England launched emergency purchases of long-dated gilts. Within a month, most of the tax cuts were scrapped, the finance minister was sacked and the prime minister had resigned.
That speed is precisely why Britain passes. Today it pays the highest ten-year rate in the G7, but its institutions demonstrated they can reverse course within weeks when the bond market demands it. Expensive is not the same as insolvent.
Italy and France: Same Currency, Different Credibility
The final two names share a currency and a vulnerability: neither can print euros, so in a panic only the European Central Bank can act as a backstop. On raw numbers, Italy looks worse, with higher debt and a lower credit rating. The three tests tell a different story.
Italy has walked this road before. In August 2011, with its yields climbing, the country received a confidential letter from the ECB’s Jean-Claude Trichet and Mario Draghi setting out the budget, pension and labour reforms Rome was expected to deliver. Bond-buying support followed, but on Frankfurt’s terms. Within months, the elected prime minister had been replaced by a technocrat. Italy never missed a payment, yet for a period its fiscal policy was effectively written by its creditor of last resort.
Since then, Italy has changed. A larger share of its debt is held at home, including directly by households. Its current government has been the most durable in the republic’s history, and it has run a surplus before interest costs in most years for three decades. When yields rose this month, Rome trimmed its planned defence borrowing within days. Lenders pushed, and Italy bent.
Why France Fails All Three Tests
France sits on the wrong side of every filter. More than half its debt is owned abroad, with almost none held directly by French households. Japanese investors, among its largest foreign creditors, were already net sellers of French government bonds back in 2024. France owes euros it cannot create. And its political system has struggled to deliver any fiscal correction at all.
The country has not balanced its budget since 1974, and has rarely managed even a surplus before interest costs over the past three decades. It has cycled through five prime ministers since the start of 2024, governing coalitions lack a parliamentary majority, and recent budgets have been forced through without a vote. In September, Paris admitted its deficit would widen again to 5.4% of GDP, and the debt agency announced a record €340 billion borrowing programme for 2027. The spread over German debt widened to its highest since the 2011 euro crisis.
The refinancing maths compounds the problem. France’s existing debt carries an average cost of roughly 2%, while new ten-year paper now costs closer to 5%. Every maturing bond gets replaced at more than double the price, so the interest bill keeps ratcheting up even if the deficit stops growing.
A Backstop Built for Smaller Countries
Europe’s rescue architecture was designed around Greece, Portugal and Ireland. Combined lending from the eurozone’s two bailout funds across five countries over the years is smaller than what France intends to borrow in 2027 alone, and France is supposed to fund a large share of those facilities itself.
That leaves the ECB. Since 2022 it has had the Transmission Protection Instrument, which allows targeted bond purchases for a country under pressure. It has never been activated, and eligibility depends on the member state following sound fiscal policy. For France, “first in line” therefore does not mean an imminent default. Markets still price the probability of that as relatively low. It means France is the most likely candidate to receive its own version of Italy’s 2011 letter, with outside institutions effectively shaping its budget.
The Contagion Map
France would not suffer alone. French banks are the largest foreign lenders to Italy, so Italian spreads tend to widen in sympathy. Germany is the biggest backer of Europe’s rescue funds and its investors hold hundreds of billions in French bonds. British banks have the greatest exposure to France of any foreign banking system, while Canadian lenders have the least.
Perhaps the most notable signal came from the United States. During earlier euro scares, money poured into Treasuries. This time, capital fled to German Bunds and the dollar, while longer-dated US yields rose rather than fell. That marks another episode in which American government debt failed to behave like the world’s automatic safe haven.
What Contrarian Investors Should Watch
For investors, the lesson is to stop ranking sovereign risk by debt ratios alone. Ownership, currency and political responsiveness matter far more. The practical markers to monitor are the French-German spread, any formal discussion of TPI eligibility, the gap between Italian and French yields, and the progress of the 2027 French budget through parliament.
Then there is Washington. France’s crisis arrives whenever lenders decide it does. America’s has a date attached. If Congress refuses to lift the ceiling once the Treasury’s room runs out in 2027, the country that cannot be forced to default could still default by choice. France leads the queue today, but the line behind it is shorter than most investors assume.
