Fed Balance Sheet Can Only Be Reduced by Eliminating Interest on Reserves

Key Takeaways

• Fed net balance sheet mirrors target Fed Funds rate
• Reverse repo peaked at $3.5 trillion to offset purchases
• Eliminating interest on reserves would shrink liabilities and holdings
• Current $6.3 trillion net size isn’t a policy problem
• Warsh should prioritize inflation target and forecasting reforms

Pulse Analysis

The Federal Reserve’s balance sheet is not a static inventory; it expands and contracts in lockstep with the target Fed Funds rate. When the Fed set a pandemic‑era goal of adding $120 billion of Treasuries and mortgage‑backed securities each month, it simultaneously deployed over $3.5 trillion of reverse‑repurchase agreements to soak up excess reserves and keep rates from falling to zero. This massive repo operation offset the growth in assets, resulting in a net securities holding of roughly $6.3 trillion after the peak of nearly $9 trillion.

A pivotal lever in this dynamic is the interest‑on‑reserves (IOR) policy introduced after the 2008 crisis. By paying banks for holding reserves at the Fed, the central bank can keep the Fed Funds rate stable without forcing a dramatic reduction in its asset base. Removing or reducing IOR would compel banks to shed excess reserves, shrinking the Fed’s liability side and allowing a genuine balance‑sheet contraction without triggering higher rates. However, such a move would cut a profitable revenue stream for the Fed and could pressure bank earnings, making it politically sensitive.

The author contends that a $6.3 trillion net balance sheet is not inherently problematic and that Warsh’s focus should shift to structural reforms—re‑examining the 2 percent inflation target, updating inflation indices, and integrating monetary‑base growth into Fed forecasting models. These adjustments could improve policy transparency and effectiveness while sidestepping a contentious IOR debate. For investors, the key takeaway is that any shift in the Fed’s liability management, whether through IOR changes or balance‑sheet trimming, will ripple through short‑term rates, bank profitability, and market expectations of future monetary policy.