The rapid expansion of US government borrowing is beginning to undermine the long-standing perception of Treasury bonds as the world’s safest asset, according to a new warning from the International Monetary Fund. The institution cautions that the US debt erodes Treasury safety premium, raising borrowing costs not only domestically but across global markets.
Annual US budget deficits have reached approximately $2 trillion, pushing total national debt to around $39 trillion. Interest payments alone are now nearing $1 trillion annually. This growing burden is forcing the US Treasury to issue increasing volumes of debt, testing investor demand at a time when appetite appears to be softening.
“Are Treasuries Still the Ultimate Safe Haven?”
For decades, US Treasuries have served as the benchmark risk-free asset, benefiting from a strong safety and liquidity premium. However, the IMF notes that this advantage is diminishing. As supply rises, yields have climbed, narrowing the gap between Treasuries and other high-quality securities.
One notable shift is the compression between yields on AAA-rated corporate bonds and Treasuries. Historically, investors accepted lower returns on Treasuries in exchange for safety. That dynamic is now changing, as competing assets offer similar or even better returns.
The IMF also highlighted that the so-called “convenience yield” of Treasuries, which reflects their global desirability, has recently turned negative. In practical terms, this means Treasuries are yielding more than comparable hedged sovereign bonds from other advanced economies, an unusual reversal of their traditional role.
Rising Competition from Corporate and Global Issuers
The erosion of the Treasury premium is occurring alongside a surge in corporate borrowing. Large technology firms, particularly those investing heavily in artificial intelligence infrastructure, are issuing significant volumes of debt. This additional supply is intensifying competition for investor capital.
At the same time, demand is shifting toward bonds issued by supranational institutions. Organizations such as the European Investment Bank and the World Bank have seen strong investor interest. Recent bond issuances from these entities have attracted demand far exceeding supply, often pricing at yields very close to US Treasuries.
This trend suggests that investors are increasingly willing to diversify away from US government debt, particularly when comparable alternatives offer similar returns with perceived stability.
“A Changing Investor Base Raises New Risks”
Another structural shift is occurring in the composition of Treasury investors. Foreign central banks, once dominant buyers, are playing a smaller role. In their place, hedge funds have expanded their presence, now holding a record share of the market.
These positions are often highly leveraged, supported by trillions of dollars in short-term financing. Analysts warn that any rapid unwinding of these trades could introduce volatility into global bond markets, amplifying the risks associated with rising US debt levels.
Additionally, the US Treasury has increasingly relied on short-term debt issuance. While this approach can lower immediate borrowing costs, it exposes the government to refinancing risks if market conditions deteriorate or interest rates rise further.
“Time Is Running Out for Fiscal Adjustment”
The IMF’s assessment underscores the long-term implications of current fiscal trends. US debt already stands at roughly 100 percent of GDP and is projected to exceed 150 percent by 2055, driven largely by rising costs in entitlement programs such as Social Security and Medicare.
The organization argues that the arithmetic of debt accumulation is becoming unavoidable. Without policy changes, the trajectory will continue to strain financial markets and increase borrowing costs.
Rather than relying on long-term targets, the IMF calls for concrete and coordinated fiscal measures. These include both revenue increases and spending adjustments, implemented in a structured and credible manner.
The warning is clear. As the US debt erodes Treasury safety premium, the margin for gradual correction is shrinking. Policymakers face a narrowing window to act before market pressures force more abrupt and potentially disruptive adjustments.
