Kevin Warsh, the incoming Federal Reserve chair, signaled his intent to collaborate with Treasury Secretary Scott Bessent on reducing the Fed's massive $7tn balance sheet. Speaking at his Senate confirmation hearing, Warsh emphasized finding ways to make the balance sheet smaller through coordinated efforts.

The Treasury's quarterly refunding announcement revealed a potential mechanism: investing excess cash from the Treasury General Account in overnight repo markets. Currently holding approximately $1tn, the TGA represents the government's checking account at the Fed. Moving these funds would mechanically shrink the Fed's balance sheet while boosting commercial bank reserves.

Bank of America estimates excess TGA cash ranges from $50bn to $300bn, limiting the overall impact on the $7tn total. The strategy faces practical hurdles, including the negative spread between repo rates and interest paid on reserves. Periods of excess TGA cash often coincide with low repo rate environments, reducing investment opportunities.

Despite potential losses, political momentum appears to drive this initiative. Mike Cloherty of CIBC Capital Markets suggests the measure primarily aims to demonstrate progress on balance sheet reduction rather than serve as effective market backstop. The Treasury acknowledged the economic viability depends on maintaining a positive interest rate spread.