The United States Treasury Department is considering using its nearly $1 trillion cash reserve, known as the Treasury General Account (TGA), to finance expanded purchases of government bonds, according to two Treasury sources. This move is intended to support liquidity in the long-term Treasury market amid persistent challenges.

Last week, the Treasury announced it would double the maximum size of its liquidity-support buybacks for 10- to 20-year and 20- to 30-year Treasury securities from $2 billion to at least $4 billion per operation. These buybacks are set to begin Sept. 9 and run through Nov. 4. Treasury Secretary Scott Bessent characterized the initiative as a way to maintain investor focus on market fundamentals during what he described as a “quiet period in a thin market,” though he did not specify the exact funding source for the increased buybacks.

Two sources close to the Treasury told U.S. media that while it is unclear how much of the TGA might be deployed or whether it will be used beyond off-the-run securities, the account is “considered to be available.” The TGA functions as the federal government’s primary cash account at the Federal Reserve and is funded mainly through government receipts such as tax collections. At present, it holds approximately $950 billion and is managed by the Treasury rather than the Federal Reserve, meaning it is not a monetary policy tool.

Market reaction to the announcement was swift, with the 10-year Treasury yield closing at 4.703%, down about 0.04 percentage points from the previous session, and the 30-year yield declining to 5.230%. If the Treasury taps into the TGA for buybacks, it may have a dampening effect on long-term bond yields. Bessent indicated that the department might exceed the initially planned $4 billion if market conditions warrant, citing “very poor” liquidity in the 30-year sector. He likened the strategy to a “Treasury twist,” whereby long-term securities are purchased with financing derived from short-term debt issuance.

Financial analysts note that Treasury purchases of long-dated government debt would likely generate an immediate bid, supporting bond prices and reducing yields, offering short-term relief to a fixed-income market that has faced headwinds. However, the measures are seen as temporary. The Bipartisan Policy Center projects that U.S. federal debt will hit the $4.11 trillion statutory debt ceiling sometime between late winter and mid-2027. If the ceiling is reached without congressional action to raise or suspend it, the Treasury would need to employ extraordinary measures to manage payments.

Drawdowns from the TGA reduce the government's cash buffer, which could be risky in the event of a fiscal standoff over the debt ceiling. Although funds withdrawn for buybacks could be replenished, some experts caution that such interventions may offer little more than a “band-aid,” providing only short-lived improvements rather than addressing underlying borrowing needs.

U.S. gross federal debt recently surpassed $40 trillion, driven largely by defense spending, entitlement programs, and mounting interest obligations. Christopher Ball, director of the Central European Institute at Quinnipiac University, warned that the scale of the debt could compel difficult fiscal choices. “If it were at a more reasonable level, then we could pay a little more in taxes or cut a little spending, not too much and not too painfully. But when it is that high, it means we have to suffer serious pains or go bankrupt,” he said.

Foreign holders of U.S. government debt include Japan, the United Kingdom, and China, according to Treasury data. As the Treasury moves forward with its buyback strategy, markets will be closely monitoring its impact on liquidity and long-term borrowing costs amid ongoing debt challenges.