US borrowing costs hit highest level since 2007
The 10-year US Treasury yield surged to 5.04%, reaching its highest mark since 2007 amid soaring oil prices and Middle East conflicts.

Stock photo for illustration only, not from the actual event
- The 10-year US Treasury yield climbed as high as 5.04%, the highest level since 2007.
- Global benchmark wholesale oil prices surged past $109 a barrel due to supply concerns in Saudi Arabia.
- Intense debt competition from AI firms building massive data centres is driving up yields.
- US Treasury Secretary Scott Bessent defended the government's bond buyback intervention as successful.
The borrowing costs for the US government have climbed to their highest peak since 2007, driven primarily by a sharp surge in oil prices that further intensified inflation worries. The effective interest rate on 10-year US government bonds, commonly tracked as the 10-year Treasury yield, rose as high as 5.04% before easing back down subsequently.
Government bond yields have maintained an upward trajectory globally for months, fueled by mounting fears that inflation sparked by surging oil prices since the outbreak of the US-Israel war with Iran will force higher interest rates. In response, the US government has been actively buying back bonds in an effort to push Treasury yields down, with Treasury Secretary Scott Bessent describing the intervention as successful.
The global benchmark wholesale oil price climbed above $109 a barrel on Tuesday, jumping from roughly $86 at the end of August, following renewed anxieties over Saudi Arabia's oil export capabilities amid escalating regional tensions. Meanwhile, investors are bracing for Federal Reserve Chair Kevin Warsh to potentially raise interest rates to combat inflation stoked by these elevated energy costs.

Stock photo for illustration only, not from the actual event
However, US President Donald Trump remains firmly opposed to a rate hike, consistently arguing that lower borrowing rates are beneficial for stimulating the economy. Trump previously clashed with Warsh's predecessor, Jerome Powell, over Powell's refusal to cut interest rates. Higher inflation and interest rates naturally push bond investors to demand higher yields on government debt, while yields also serve as a barometer of investor confidence in a given administration.
"Bond markets had been signalling for weeks that higher interest rates may be needed."
Carol Schleif, chief market strategist at BMO Wealth Management
Adding to the upward pressure on yields is intense competition for debt from artificial intelligence (AI) firms. Technology giants are borrowing massive piles of cash to finance the construction of colossal data centres. This heavy borrowing by tech corporations raises their own debt interest rates, which in turn drives up government bond yields as a direct market response.
The convergence of multi-decade high borrowing costs highlights a delicate balancing act for modern monetary policy, where traditional commodity shocks intersect with hyper-capital-intensive tech infrastructure. The insatiable capital requirements of the AI boom are spilling over into macro debt markets, creating structural shifts in how sovereign yields react to global liquidity demands.
Source: BBC Business
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