US borrowing costs rise as attempts to ease rates prove short-lived
US long-term borrowing costs have risen again despite a Treasury Department intervention aimed at lowering bond yields. The government's attempt to stabilize the market proved short-lived as investors remain concerned about the national debt exceeding $40 trillion and inflationary pressures.
Why it matters
Rising bond yields directly impact the cost of consumer loans, including mortgages and car financing, while signaling broader instability in the US economy and the global financial system.
Image source, Getty Images By Michael Race Business reporter , Reporting from New York Published 21 August 2026 Long-term borrowing costs in the US rose again despite an announcement from the government that it would intervene to try to lower them.
Earlier this week, the Treasury Department said it would buy back more debt in a bid to lower rates being charged by investors on global bond markets, which governments and major corporations rely on to borrow money.
While rates - or yields as they are called - eased on borrowing over 30 years following the intervention, they have since risen again. Such moves can affect mortgage rates and car loans.
Economists said the surprise move by the US government had proved short-lived, with ongoing concerns over the level of borrowing as national debt passed $40tn.
On Friday, the interest rate on 30-year bonds had risen to around 5.27%.
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