Treasury Secretary Bessent’s Bond Gamble: Why Yields Remain Under Pressure

Treasury Secretary Scott Bessent’s decision to expand liquidity-support buybacks for long-dated government debt has so far failed to coincide with a sustained decline in longer-term yields, even though the larger operations have not yet begun.

Treasury announced on Wednesday that the maximum size of buyback operations in the 10-to-20-year and 20-to-30-year sectors would rise from $2 billion to at least $4 billion per operation beginning September 9. The expanded operations will run through November 4, when Treasury is due to provide further information on future buyback sizes.

The announcement initially pushed long-term yields lower, but that move was not sustained.

The significance is that markets responded to the policy signal without yet showing that larger Treasury purchases can overcome the forces keeping long-term borrowing costs elevated.

The reason is straightforward: Treasury buybacks are primarily a market-functioning and liquidity tool. They can influence the trading conditions of particular securities, but they do not determine the yield investors ultimately require to hold long-term US government debt.

Why Are Long-Term Treasury Yields Still High?

Long-term Treasury yields reflect expectations for future interest rates and inflation, the supply of government debt, investor demand and the term premium.

The Treasury Borrowing Advisory Committee said the Iran conflict and its effect on energy prices had remained the dominant influence on global markets since its previous meeting. It also said energy-market volatility had significantly influenced rates markets, with the 10-year Treasury yield around 4.6% and the two-year yield around 4.2% at the time of its August report.

The Federal Reserve’s June meeting minutes provide another part of the picture. The Fed said the market-implied path for interest rates and nominal Treasury yields had moved higher, with the rise partly reflecting a higher term premium. It also noted that the 10-year yield had risen and that changes in the composition of Treasury ownership could have implications for the term premium.

The Treasury market is therefore responding to several forces at once rather than to liquidity conditions alone.

What Exactly Is Bessent’s Buyback Plan?

Treasury’s expanded programme covers nominal Treasury securities in the 10-to-20-year and 20-to-30-year maturity sectors.

The purchase maximum will rise from $2 billion to at least $4 billion per operation starting September 9. The expansion will remain in place through November 4, with Treasury set to release an updated tentative schedule later.

Treasury said the increase reflects strong market sponsorship and the volume of high-quality offers it routinely receives in the long end of the market.

Bessent said in a CNBC interview on August 20 that purchases could exceed $4 billion depending on market conditions and that Treasury wanted to “make a market” where liquidity in longer-dated securities was poor.

The timing matters. Markets have already reacted to the announcement, but the expanded purchases themselves do not begin until September 9.

Why Doesn’t A Buyback Automatically Push Yields Down?

The buybacks are designed principally to improve liquidity in particular Treasury securities rather than reduce the government’s overall borrowing needs.

Treasury’s August refunding offering totals $125 billion, comprising $58 billion of three-year notes, $42 billion of 10-year notes and $25 billion of 30-year bonds.

The buybacks do not cancel the need to issue new debt; they alter the composition and liquidity of securities in the market.

That limits how much influence they can have over the overall level of long-term yields. If investors are demanding higher compensation because of inflation expectations, interest-rate uncertainty, fiscal borrowing or a higher term premium, buying selected securities cannot by itself eliminate those pressures.

What Is Pushing Yields Higher?

Inflation and Fed policy: The Federal Reserve’s June projections became more hawkish. The median 2026 policy-rate projection moved higher, the median core PCE inflation projection was revised to about 3.3%, and the median real GDP projection was lowered to about 2.2%. The Fed said inflation remained elevated, partly because of supply shocks, including energy.

Interest-rate expectations: The June FOMC minutes said the market-implied path for the federal funds rate had moved higher during the intermeeting period, while uncertainty around the policy path had also increased. The rise in nominal Treasury yields was associated with higher real rates and a higher term premium.

Fiscal borrowing: Treasury continues to issue large quantities of debt, with the August refunding alone totalling $125 billion. The scale of supply means the market must continue absorbing substantial amounts of new government borrowing even while Treasury conducts buybacks in the secondary market.

Geopolitical and energy risk: The TBAC said the Iran conflict and its impact on energy prices had remained the dominant influence on global markets. It also said energy-market volatility had significantly influenced rates markets.

Term premium: The term premium is the additional compensation investors demand for holding longer-term debt rather than repeatedly rolling over shorter maturities. The Fed has pointed to higher term-premium measures and changes in Treasury ownership as factors affecting long-term yields.

Why Is The 30-Year Bond Particularly Important?

The 30-year Treasury is especially sensitive to investors’ expectations for long-term inflation, government borrowing and the term premium.

It is also important for Treasury’s debt-management operations. Poor liquidity in the long end can increase price volatility and make it harder for investors to trade large positions efficiently.

That is why Bessent’s focus is not simply on lowering the headline 30-year yield. Treasury is also concerned with how easily particular securities can be traded and how efficiently the government can operate in the long end of the market.

The decision therefore represents an attempt to improve market functioning rather than a direct attempt to dictate where the 30-year yield should trade.

What Can Bessent Actually Do?

Bessent has described Treasury as having a “big toolkit”, but the department cannot independently determine the 30-year yield.

Treasury can use larger liquidity-support buybacks and adjust its debt-management and issuance strategy. But any meaningful reduction in the fiscal pressure behind long-term borrowing would require broader budget and fiscal-policy decisions.

That is why Bessent’s plans to discuss “fiscal consolidation” with Office of Management and Budget Director Russell Vought matter. Fiscal consolidation, if implemented, could address some of the borrowing pressures underlying the market rather than simply the liquidity of individual Treasury securities.

The distinction is important: Treasury can influence market functioning, but it cannot through buybacks alone eliminate inflation risk, determine the Federal Reserve’s policy path or remove the government’s need to borrow.

What Happens Next?

The immediate test will come on September 9, when the enlarged long-end buyback operations begin. Treasury has said the expansion will remain in place through November 4, when it will provide more information on future buyback sizes.

Until then, markets are responding primarily to the policy signal rather than the full effect of the additional purchases.

That makes the central question less whether Treasury can temporarily push yields lower and more whether better liquidity can ease pressure in the long end while inflation expectations, interest-rate expectations, fiscal borrowing and the term premium remain elevated.

Bessent’s challenge is therefore not simply to buy more bonds. It is to demonstrate that Treasury’s market-functioning tools can ease pressure at the long end without promising more than those tools can deliver.