Kevin Warsh, former Federal Reserve Chairman, stated that shrinking the Fed's balance sheet will take years, reiterating his preference for the central bank to scale back its bond portfolio. He emphasized that such a step would only occur after extensive public preparation, noting that it took approximately 18 years for the balance sheet to reach its current size and will take significantly longer than 18 weeks to reduce it. This sentiment aligns with Federal Reserve documents suggesting that balance sheet reduction of $1.2 to $2.1 trillion within the current ample reserves framework could take at least a year, and potentially several, with further reductions possible if the Fed returns to a scarce reserves framework.

Currently, the Federal Reserve's balance sheet has grown from less than $1 trillion before the 2008 financial crisis to over $6 trillion. Key liabilities include commercial bank deposits at the Fed, which are almost $3 trillion, and paper currency in circulation, totaling $2.4 trillion. Additionally, the U.S. government's deposit account at the Fed is around $1 trillion. To reduce the balance sheet, the Fed would primarily need to decrease the amount of bank deposits, also known as "reserves," as currency levels are less manageable. The goal is to shrink the balance sheet without disrupting financial markets or the Fed's ability to target interest rates effectively.

Several methods and considerations exist for shrinking the balance sheet. Directly selling assets could disrupt financial markets and leave banks with insufficient reserves. Instead, approaches include reducing the demand for bank reserves. One way to do this is by adjusting liquidity regulations for banks, especially globally systemically important banks (G-SIBs), which currently rely heavily on reserve balances to meet requirements. Another suggestion is to alter how the Fed pays interest on reserves; some central banks pay different interest rates once banks hold more than enough reserves, potentially discouraging excessive parking of funds at the Fed. Federal Reserve Governor Stephen Miran highlighted that easing liquidity regulations, tweaking bank stress tests, and destigmatizing the use of Fed liquidity facilities could allow for substantial cuts to the balance sheet, facilitating an easier monetary policy stance.