Episode summary
Darrell Duffie on the Fed’s Balance Sheet and the Changing Financial System | Macro Musings
Macro Musings
· · 1 hr 2 min · Hosts: David Beckworth · Guests: Darrell Duffie
Summary
Darrell Duffie argued that the Fed’s balance sheet is harder to shrink than many policymakers assume because reserve demand has become sticky. He pointed to the 2017-18 normalization attempt, the 2019 repo episode, and a later 2025 episode as evidence for the “ratchet effect”: once banks adapt to abundant reserves, they resist moving back to a scarcer system. He also said intraday liquidity rules, supervisory expectations, and banks’ fear of violating the spirit of regulations like Reg YY and stress tests make them reluctant to use the discount window, daylight overdrafts, or standing repo operations.
Duffie’s main operational fix was to add a liquidity savings mechanism to Fedwire, letting offsetting payments cancel so banks need fewer reserves. He also discussed temporary open market operations to smooth Treasury General Account shocks, and more controversial reforms such as tiered reserve remuneration and voluntary reserve targeting. In his view, these tools are not a mandate to shrink the balance sheet, but a way to give the Fed options if it wants to do so without destabilizing money markets.
He then turned to tokenized finance, arguing that programmable ledgers will reshape back-office market plumbing, but only if central banks provide a safe settlement asset. He warned that fragmentation between conventional and tokenized money could initially raise reserve demand and balance-sheet size, even as it eventually opens the door to more automated, just-in-time liquidity provision.
Key takeaways
- Duffie said QT has not fully reversed QE because banks adapt to large reserve balances and then resist operating with less liquidity.
- He argued intraday constraints like Reg YY and supervisory fear matter more than the LCR for reserve scarcity and payment-gridlock risk.
- His preferred near-term fix is a liquidity savings mechanism on Fedwire, which he said is easier to implement than a full operating-system overhaul.
- Duffie said temporary open market operations could smooth TGA-driven reserve shocks, but would only trim reserve needs by tens or low hundreds of billions.
- He views tiered reserve remuneration as the most powerful but hardest reform because it would push banks to lend excess reserves and revive interbank pricing.
- On tokenized finance, Duffie said safe large-scale settlement still requires central bank money, not stablecoins, for multi-trillion-dollar markets.
Notable quotes
“The Payment System Puts a Floor Under the Fed's Balance Sheet”
“when the Fed blows up its balance sheet, it's creating it's doing that by creating a lot more reserves”
“the largest banks are starting to view these facilities or overdrafting as more available”
“the liquidity savings mechanism is going to look for the opportunity to cancel your outgoing payments with your incoming payments”
“it's not about Bitcoin, it's about the back end of the financial system where treasury repos and large foreign exchange trades are done”
How the episode opens
Our guest today is Darrell Duffie. Darrell is a finance professor at Stanford University and one of the leading authorities on financial market design and monetary policy implementation issues. He joins us today to discuss both based upon some papers he's recently done and presented at Brookings and at Jackson Hole. Darrell, welcome back to the program.
David, it's great to be back. Thanks for having me on.
It's great to have you. It's a real treat. Now, the last time you were on was way back in 2020.
We talked about the Treasury market challenges at that time and reforms and a number of proposals are now being implemented like central clearing. Um but today we want to talk about the Fed's balance sheet and what its future might look like. And as I mentioned in the intro, you have several wonderful papers on that.
And I I want to maybe begin, before we jump into your two papers, by just kind of setting the historical context where we are. So, as you know, Darrell, um in fact you may be a part of these conversations uh behind the scenes, but we have a Fed balance sheet task force that's happening right now. Um that was initiated by the new chairman, Kevin Warsh.
Uh we also have what seems to me, at least, is a change in openness among FOMC members. And I would I would say just the those in the policy space writ large who care about this topic. There's a few of us who've been beating this drum for a long time, but it just seems to me there's more openness, more discussion.
Uh maybe not everyone wants to go to a different operating system, but there seems to be an openness at least to shrink the liability side of the balance sheet.
From the episode’s captions: roughly the first two minutes, lightly cleaned. Keep watching on YouTube →
Topics
- fed balance sheet
- qt vs qe
- payment system design
- tokenized finance
- fedwire
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Summary, takeaways and quote selection by Octagon. Quotes are short excerpts; the full conversation is in the episode.
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