US borrowing costs hit highest level since 2007

The US government's borrowing costs have reached their highest level since 2007, following a surge in oil prices that has heightened concerns about inflation, according to recent reports. The 10-year Treasury yield, which measures the effective interest rate on US government bonds, climbed as high as 5.04% before easing back since.

This trend is part of a global increase in bond yields, prompted by fears that inflation resulting from the recent oil price spike due to the US-Israel conflict with Iran could lead to higher interest rates. The US government has been actively buying back bonds in an attempt to lower the Treasury yield, with Treasury Secretary Scott Bessent claiming the intervention has been successful.

The global benchmark wholesale oil price reached over $109 a barrel on Tuesday, up from around $86 at the end of August, following renewed concerns about Saudi Arabia's capacity to export oil amid increasing regional tensions. Investors are expecting the US Federal Reserve to raise interest rates to curb the inflation caused by the higher oil prices.

As inflation rates and inflation itself generally lead to higher yields demanded by bond investors, bond yields can also indicate the level of confidence investors have in a particular government. A higher yield signifies less confidence. While bond markets have been signaling for weeks that higher interest rates may be necessary, Carol Schleif, a chief market strategist at BMO Wealth Management, stated that the recent rise in borrowing costs has been orderly rather than sudden.

She added that rates could potentially remain elevated if geopolitical tensions and high energy prices remain prominent issues.