OECD warns surging bond yields force advanced economies to cut public spending

During its routine meeting in Paris this week, the Organisation for Economic Co-operation and Development (OECD) issued a stern warning: as government bond yields continue to rise across most advanced economies, the proportion of interest payments in total government budgets is steadily increasing, becoming a "major hazard" to public finances. The OECD Secretariat pointed out that without timely containment of spending and debt levels, a chain reaction could ensue, potentially leading to worsening fiscal deficits, cuts to public services, and even credit rating downgrades. This warning comes at a time when countries are striving to recover from the shocks of the COVID-19 pandemic and the Russia-Ukraine war, making the fiscal pressure particularly heavy.

The rise in government bond yields is rooted in heightened market risk assessments of various countries' fiscal conditions. Since 2022, in response to soaring energy prices and inflationary pressures, many European nations and the United States have launched large-scale stimulus packages, driving total government debt to record highs. To compensate for the decline in real returns caused by inflation, investors are demanding higher bond yields, which further pushes up borrowing costs. This cycle intensifies the burden on governments to repay principal and interest in the future, posing particularly significant risks for countries already approaching or exceeding the threshold of fiscal sustainability.

In Europe, government bond yields in Germany and Italy have broken historical highs. The yield on Germany's ten-year government bonds has rebounded from negative territory at the end of last year to nearly 3 percent, while Italy's yield is approaching the critical 4 percent mark. The fiscal deficit and public debt-to-GDP ratios of both countries are nearing the sustainability limits set by the OECD. If yields continue to rise, the share of future interest payments in their budgets could jump from the current approximately 30 percent to nearly 40 percent, forcing governments to cut spending in areas such as education, healthcare, and infrastructure. In contrast, Nordic countries such as Sweden and Denmark, benefiting from more robust fiscal structures, have felt the impact of rising yields as well, but still retain greater policy maneuverability.

In Asia, Japanese government bond yields have long remained low, but due to shifts in global capital flows, they have also edged upward recently. The Japanese government has begun reviewing the scale of its massive public debt—specifically its debt-to-GDP ratio exceeding 200 percent—to determine whether accelerated structural reforms are necessary to lower future interest burdens. Emerging market economies face even more severe challenges: currency depreciation and capital outflows have increased the cost of US dollar-denominated external debt. If yields continue to rise, it will directly erode their fiscal resilience and even increase the risk of debt crises.

In response to the OECD's warning, governments have successively introduced countermeasures. The European Central Bank stated in a recent policy meeting that it will maintain an accommodative monetary policy to curb excessive yield growth, while encouraging member states to accelerate structural adjustments in public spending, prioritizing investments in green energy and digital infrastructure to enhance long-term economic growth potential. The US Department of the Treasury emphasized that it will strengthen expenditure discipline in future budgets to avoid over-reliance on debt financing. The OECD also called on all nations to incorporate the share of interest payments into long-term sustainability assessments when formulating fiscal policies, thereby preventing the seeds of a fiscal crisis from being sown by short-term stimulus.

Overall, the rapid rise in government bond yields is not merely a fluctuation in financial markets, but a profound challenge to the health of public finances worldwide. If spending is not effectively controlled and debt structures optimized, future fiscal pressures could translate into reduced social welfare and slowed economic growth. The OECD's reminder serves as a caution to governments that on the path to recovery, they must balance short-term demands with long-term fiscal stability to avoid falling into a new round of fiscal crisis driven by excessive interest burdens.