US Treasury yields surge: No short-term fiscal crisis, but long-term risks remain.
2026-10-05 20:54:18
Core Market Concern: High Interest Rates Fuel Debt Spiral Risk Currently, the US government's borrowing costs have climbed to multi-decade highs, with the benchmark 10-year Treasury yield firmly above 5%, a level rarely seen since 2007. Data shows that in the first 11 months of fiscal year 2026, the US government's net interest costs reached approximately $1.05 trillion. These high interest payments have triggered strong market concerns about a US fiscal crisis. Maya McGinnis, chair of the Committee on Responsible Federal Budget, a US think tank, issued a stark warning, stating that the US is currently trapped in a vicious cycle of debt and interest rates: high debt pushes up market interest rates, which in turn further exacerbate government interest payments, forcing the US government to continuously borrow more to repay debt, creating a self-reinforcing negative cycle. She bluntly stated that the once unimaginable US fiscal crisis has now become a real possibility. The transmission logic of this fiscal nightmare is very clear: investors demand higher bond yields due to the high level of US debt, and rising interest rates directly increase the federal government's debt repayment bill; the government can only continue to borrow to repay its debts, and the continuously expanding debt scale will force investors to further raise yield demands, ultimately forming an out-of-control debt spiral. Multiple assessments suggest no short-term risk of fiscal collapse. Despite strong market concerns, mainstream financial institutions generally believe that the US is still far from the tipping point of fiscal collapse, and a "fiscal apocalypse" is not imminent. TD Securities strategists explicitly stated that the US is not currently facing a fiscal crisis, and multiple buffering factors have effectively stabilized the US fiscal fundamentals. From the perspective of debt financing, the US does not need to immediately replace all existing debt at current high interest rates, leaving ample room for maneuver. The weighted average maturity of US government debt is approximately 5.9 years, and high borrowing costs will only be gradually transmitted as old debt matures and new debt is issued, without a concentrated impact on the fiscal system. Currently, the average coupon rate of US Treasury bonds excluding short-term notes is only 3.1%, and overall debt costs are at a manageable level. The supporting role of economic growth is equally crucial. Currently, the average interest rate on overall US debt is approximately 3.4%, significantly lower than the annualized nominal GDP growth rate of 8.5%. This means that economic growth can cover debt interest costs, and even with a high fiscal deficit, the overall debt burden will not deteriorate rapidly. In addition, the global privilege of the US dollar and the core advantages of the US capital market are also important guarantees against a short-term fiscal crisis. A representative from FATO Asset Management stated that the US, leveraging its dollar hegemony, top-tier global market liquidity, and high credit rating, has significantly reduced the risk of short-term debt defaults. Meanwhile, the case of Japan, with its high debt and low growth yet no fiscal crisis, also demonstrates that high debt does not necessarily lead to fiscal collapse. According to the Congressional Budget Office, in fiscal year 2026, the ratio of US public-held federal debt to GDP will be approximately 101%, a relatively high figure, but currently within a manageable range. The core driver of soaring yields: economic resilience outweighs fiscal panic. While the market generally attributes the surge in yields to fiscal concerns, institutional analysis points out that the core driver of the sharp rise in US Treasury yields is not fiscal problems, but rather strong economic fundamentals. TD Securities, after analyzing multiple influencing factors, stated that a stronger-than-expected economic recovery, expectations of Fed rate hikes, rising international oil prices, large-scale corporate bond issuance, and short-term fund rebalancing have all contributed to pushing up US Treasury yields, with fiscal concerns being only a secondary factor. The BMO Capital Markets strategy team also corroborates this view, emphasizing that the resilience of the US economy is the core reason for the rise in long-term US Treasury yields. The current US labor market demonstrates strong resilience. Even in the face of persistent inflation and high borrowing costs, the job market remains stable, maintaining investor confidence in the fundamentals of the real economy and aligning with the Federal Reserve's anti-inflation policy. The current rise in long-term yields is essentially driven by rising real interest rates, stemming from optimistic market expectations for current and future economic growth. Potential Risks and Subsequent Market Turning Points While there is no short-term fiscal crisis, the underlying risks have not been eliminated, and the negative impact of high interest rates on the economy is gradually becoming apparent. Data from a Bank of Montreal survey shows that the negative impact of high real interest rates will first be transmitted to the real economy, with the real estate sector facing the most significant pressure. 42% of respondents listed it as the primary affected sector, followed by the stock market and corporate credit. Only 1% of respondents believed the labor market would be the first to experience pressure. Industry experts warn that the core hidden danger of US fiscal risk lies in a slowdown in economic growth. Once US nominal economic growth cools significantly, the negative feedback loop between debt and interest rates will rapidly worsen, and the debt-to-GDP ratio will continue to rise, significantly increasing the risk of a fiscal crisis. The key turning point that limits further increases in US Treasury yields lies in the substantial impact of high interest rates on the economy. Only when there is clear evidence that the real economy or capital market is being continuously suppressed by high borrowing costs and is showing signs of weakness will this round of rising yields come to a complete end, and the US fiscal and debt landscape will also undergo new changes.
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