Global Bond Yields Surge Amid US Fiscal Concerns

Global borrowing costs are rising as investors sell off long-dated government bonds, driving yields to multi-decade highs in the United Kingdom and Japan, and approximately 5% for 30-year US Treasuries. This trend is driven by persistent inflation and spiraling budget deficits, with markets in the United States, Japan, the United Kingdom, and France exhibiting signs of fiscal dominance. This condition occurs when primary fiscal deficits stimulate nominal growth while central banks fail to tighten monetary policy to offset the spending.

In the United States, Donald Trump has intensified investor concerns through the One Big Beautiful Bill Act, which the Congressional Budget Office estimates could add $3.4 trillion to the deficit over a decade. Additionally, Trump's move to oust Federal Reserve Governor Lisa Cook has raised alarms regarding the independence of the central bank. These factors contributed to Moody's Ratings stripping the US of its top credit score in May.

Financial indicators show an increasing spread between low 5-year real yields and rapidly rising 30-year nominal yields in the US. The Institute of International Finance reported that global debt reached a record $324 trillion in the first quarter of 2025. The resulting spike in yields threatens to increase costs for mortgages and auto loans, potentially creating a doom loop of climbing debt levels, higher inflation expectations, and currency depreciation.