Fed Balance Sheet: Leveling Off

Crises eventually subside, and then the central bank is left holding a large quantity of assets. Once conditions are stable, they begin depleting those assets through quantitative tightening (QT). Under QT, when a bond held by the central bank reaches maturity, its principal is not reinvested. The balance sheet entry is deleted, and the total portfolio value declines. Money is not physically destroyed, but the overall liquidity in the financial system is reduced.

Whereas the emergency intervention of QE is stimulative, the impact of QT is hard to observe. Amid a crisis, policymakers may err on the side of doing too much, creating more liquidity than the system needs. While those excess funds are evaporating, financial conditions show little change. And thus, two trillion dollars can disappear without consequence.

Last week, Fed Chair Jerome Powell gave a speech on the balance sheet. While not offering a specific plan for ending QT, the content of the speech made it clear that the Board is working on an approach to be announced soon. Powell recapped the pandemic-era QE and did not back down from addressing its critics. Perhaps QE could have ended sooner, but the Fed did not want to spark volatility in a vulnerable economy. Perhaps the Fed did not need to purchase over $1.3 trillion of mortgage-backed securities (MBS), but those were allowable assets to acquire as the Fed sought to keep financial conditions easy.

Powell’s key takeaway from the pandemic QE and QT was that the Fed “can be more nimble in our use of the balance sheet.” Bond markets are now familiar with this tool and can adapt quickly to the Fed’s strategies.

The Fed has remained cautious about the timing and announcements of its QT decisions: first, when to start as to not upset markets, and later, when to cease runoff. The Fed has only one prior interval to QT to study, and that episode went too far. On September 17, 2019, as GFC-era assets were in gradual runoff, interbank lending reached an unexpected shortfall. The Secured Overnight Funding Rate (SOFR), reflecting market pricing for overnight lending, spiked by nearly three percentage points. The Fed rapidly switched from QT to QE, and SOFR calmed.

To prevent recurrence, the Fed launched the standing repurchase facility (SRF) to allow quick borrowing. If funding markets are tight and overnight rates are rising, the SRF allows banks to pledge their U.S. Treasury assets to borrow directly from the Fed, at the top end of the Fed Funds target range.

The timing of Powell’s speech was driven by daily market observations. Strain is evident, suggesting the time is right to stop draining liquidity.

The Fed’s overnight reverse repurchase (ONRRP) facility was a pandemic workhorse. As savings rose, excess cash flowed into money market funds, who could earn a safe return placing these monies with the Fed each day. ONRRP utilization thus provided a ready measure of excess liquidity, exceeding $2.3 trillion in September 2022. Now, the ONRRP is holding near zero.

Draws on the SRF have increased, suggesting some overnight funding gaps have emerged. Similarly, banks can draw upon the Fed’s discount window to borrow directly; its usage has come back to life from zero in recent weeks.

These shifts are not signs of stress; shortfalls have been minor, and relief systems are working as intended. However, we can be certain the era of excess liquidity has ended. Fed speakers have characterized the pandemic-stimulated economy as one of “abundant reserves,” with bank reserves elevated beyond their natural level. The Fed is targeting an environment of “ample reserves.” The boundary between “abundant” and “ample” has never been defined. However, the 2019 shock is illustrative. Bank reserves as a share of nominal gross domestic product had trended down from 15% to a low of 6.5% when markets seized. The Fed is unlikely to go that low again. The decline to roughly below 10% today is likely consistent with “ample” reserves.

And while he left this point unstated, Chair Powell may view the balance sheet as the last piece of unfinished business from the pandemic crisis, to be resolved before his term ends next May. Leaving the balance sheet in a steady state will make it more difficult for any successor to change its use, until another crisis opens this path again.

In an upcoming meeting, we expect the Federal Open Market Committee to announce a new strategy that will set a steady state for the balance sheet. And with that, the years-long case of the missing trillions will close.

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