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Scott Bessent has a plan to bring down long-term US borrowing costs. The bond market has a different plan.
The Treasury Secretary announced on August 19-20 that the government would double the size of its buyback operations for longer-dated bonds, jumping from $2 billion to at least $4 billion per operation starting September 9. The idea is straightforward: scoop up 10- to 30-year Treasuries to reduce supply, prop up prices, and push yields lower. Yields on those bonds serve as the baseline for everything from mortgage rates to corporate borrowing costs, so getting them under control matters for the entire economy.
The market’s response was polite but firm: no thanks. After a brief dip following the announcement, yields snapped right back. The 10-year Treasury yield closed the week between 4.69% and 4.73%, while the 30-year yield settled between 5.23% and 5.27%. That 30-year figure is the highest since 2007.
Why the bond market isn’t buying it
Three forces are working against Bessent, and none of them respond well to buyback programs.
First, there’s the sheer scale of the problem. US public debt surpassed $40 trillion in August 2026, with annual interest payments now exceeding $1 trillion. Doubling a buyback operation to $4 billion per round is like trying to drain a swimming pool with a coffee mug.
Second, inflation remains stubbornly elevated at approximately 3.7%. When prices keep rising, bond investors demand higher yields to compensate for the erosion of their purchasing power. If you’re lending money for 30 years and inflation is eating nearly 4% of your returns annually, you’re going to want a premium for your trouble.
Third, the US government needs to keep borrowing heavily, partly to fund significant technological investments. More supply of bonds hitting the market means downward pressure on prices, which mechanically pushes yields higher. The Treasury is essentially trying to reduce supply with one hand while flooding the market with the other.
Analysts from Nomura and ING have been blunt in their assessments, calling the buybacks insufficient to counter the fundamental pressures of debt supply and persistent inflation.
Bessent’s broader fiscal playbook
Bessent, who became the 79th US Treasury Secretary on January 28, 2025, has framed his approach as part of a larger fiscal consolidation agenda. He has publicly stated that current yields don’t reflect fundamental economic conditions.
The buyback strategy itself isn’t new. The Treasury has used similar operations historically to manage the maturity profile of government debt and smooth out market functioning. What’s different this time is the explicit framing as a tool to bring down borrowing costs rather than just a routine debt management exercise.
What this means for borrowers and investors
The persistence of elevated yields has consequences that ripple far beyond the Treasury market. Mortgage rates, which closely track the 10-year yield, remain painfully high for homebuyers. Corporate borrowing costs stay elevated, making it more expensive for companies to finance expansions, acquisitions, or even routine operations.
The broader risk is one of fiscal credibility. When a government signals that it wants lower yields but the market refuses to comply, it raises questions about who’s really in charge. Bond vigilantes have been a recurring character in financial history. Their last major starring role was in the UK gilt crisis of 2022, when Liz Truss’s unfunded tax cuts sent British bond yields soaring and forced a policy U-turn within weeks.
The US enjoys structural advantages that the UK doesn’t, including the dollar’s reserve currency status and the unmatched depth of the Treasury market. Those advantages buy time and flexibility. They don’t buy immunity from math.
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