The US Treasury’s decision to expand purchases of older long-dated bonds has revived concerns in foreign-exchange markets about the future of the US dollar. Investors are questioning whether efforts to prevent borrowing costs from rising too sharply could eventually place more pressure on the currency.
US Treasury Expands Bond Buybacks
On Wednesday, the Treasury announced that it would at least double the maximum size of some bond buyback operations. The new limit will rise to at least $4 billion.
These purchases mainly target older long-term Treasury securities that have experienced heavy selling since late June.
Treasury Secretary Scott Bessent later told CNBC that individual buybacks could exceed $4 billion. He also suggested that investors may have pushed the recent bond-market selloff too far.
Why the Timing Has Attracted Attention
Treasury buybacks are not a new policy. The department restarted the program in 2024 as a way to improve liquidity in older and less actively traded government bonds.
However, the timing of the latest expansion has drawn more attention.
The announcement came outside the Treasury’s usual quarterly refunding schedule and shortly before a 20-year bond auction. As a result, some investors interpreted the move as an attempt to ease pressure on longer-term Treasury yields.
Those yields have risen because of several factors, including a worsening US fiscal outlook, heavy government borrowing, geopolitical tensions and uncertainty surrounding Federal Reserve policy.
The 30-year Treasury yield recently climbed to its highest level since 2007, while total US public debt moved above $40 trillion.
Could Lower Bond Yields Pressure the US Dollar?
The key question for markets is whether policymakers will allow long-term Treasury yields to rise until they reach a level that naturally attracts enough buyers.
Alternatively, officials could continue using measures designed to limit upward pressure on yields.
That approach could have consequences for the dollar. If US government bonds offer investors less compensation for fiscal and inflation risks, foreign demand could weaken. Lower investment inflows could then place downward pressure on the currency.
Shaun Osborne, chief FX strategist at Scotiabank, argued that an adjustment will eventually have to take place. If it does not happen through higher yields, part of that adjustment could instead appear through a weaker US dollar.
Dollar Debasement Concerns Return
The Treasury’s actions have also revived discussion about currency debasement.
The concern is not that the Federal Reserve is directly creating money to fund government spending. Instead, investors worry that rising debt-servicing costs could encourage policymakers to prevent Treasury yields from reaching normal market-clearing levels.
Officials have several potential tools available. These include Treasury buybacks, issuing more short-term debt and other measures that reduce the amount of long-duration bonds private investors need to absorb.
However, these policies do not eliminate the underlying economic adjustment. They may simply shift it elsewhere.
If long-term yields are kept lower than markets would otherwise demand, investors could respond by reducing exposure to the US dollar.
Gold and Bitcoin Rally After Treasury Announcement
That concern may help explain why alternative assets reacted strongly following the Treasury announcement.
Gold gained more than 3%, while Bitcoin rose around 13% over two days.
Both assets are often closely watched when investors become concerned about inflation, government debt, currency weakness or the purchasing power of traditional money.
Deutsche Bank strategist George Saravelos compared the potential effect of the Treasury measures with the Federal Reserve’s Operation Twist in 2011 and 2012.
During that program, the Fed sold shorter-term securities while purchasing longer-term bonds in an effort to reduce long-term borrowing costs.
Saravelos described the latest Treasury measures, together with efforts to encourage foreign central banks to use the Federal Reserve’s repo facility rather than sell Treasuries, as a softer form of financial repression designed to contain longer-term yields.
Not All Strategists Expect a Major Dollar Crisis
Some analysts believe the market reaction may be overstated.
Sarah Ying, head of FX strategy at CIBC Capital Markets, described the current situation as a smaller version of previous periods of dollar stress.
In her view, the latest episode is less severe than the market turbulence seen after the April 2025 “Liberation Day” announcement or other recent periods of dollar weakness.
She suggested that the situation may reflect Treasury officials testing the bond market rather than investors directly challenging Washington’s credibility.
Political Timing Adds Another Dimension
The timing of the Treasury action has also generated political discussion.
With the US midterm elections approaching, lower long-term interest rates could benefit the administration. In particular, falling Treasury yields could eventually help bring down mortgage rates, which remain a major concern for American households.
At the same time, policymakers have limited room to push borrowing costs lower.
If financial conditions become too loose, inflation could accelerate again. That could force the Federal Reserve to maintain higher interest rates or even consider additional tightening.
Such an outcome would create another challenge for policymakers ahead of the elections.
Investors Are Watching Treasury Credibility
Steve Englander, global head of G10 FX research and North American macro strategy at Standard Chartered Bank, argued that investors may be more concerned about the appearance of policy improvisation than the fiscal numbers themselves.
Repeated interventions in less-liquid areas of the Treasury market could eventually undermine confidence if investors begin viewing them as emergency responses rather than normal liquidity-management measures.
However, Englander still expects the dollar to receive support from relatively high US interest rates and strong economic fundamentals.
In particular, US productivity growth and corporate earnings remain important positive factors.
US Fiscal Risks Remain Unchanged
Ultimately, the Treasury buyback program does not remove the fundamental strengths or weaknesses of the US economy.
Strong productivity continues to support the economic outlook. At the same time, large government deficits and rising public debt remain significant long-term concerns.
For currency markets, the debate now centers on where the adjustment will occur.
If long-term Treasury yields are allowed to rise, borrowing costs could remain elevated. If policymakers increasingly try to suppress those yields, investors may instead demand an adjustment through a weaker US dollar.
Either way, Treasury policy, Federal Reserve decisions and the US fiscal outlook are likely to remain major drivers for the dollar, gold and Bitcoin in the months ahead.
