Why the Fed May Have to Hike Far Higher Than Expected | Henry Peabody on the Fed’s Triple Mandate and Uneven Transmission of Monetary Policy

September 24, 2026

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5 min read

The Federal Reserve may need to raise interest rates far higher than most expect, not because inflation is stubborn, but because the way credit flows through the economy has fundamentally changed. Henry Peabody, senior investment strategist at GMO, argues that the traditional transmission mechanism of monetary policy—where higher rates automatically tighten credit across the board—has broken down. Instead, the system has become bifurcated: high-quality borrowers and large corporations continue to access cheap credit with ease, while consumers and lower-quality borrowers face increasingly tight conditions. This uneven transmission creates a new, unofficial “third mandate” for the Fed: managing the allocation of credit across the economy.

The Fed’s Uneven Transmission Mechanism

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What you'll learn

1 (00:28) **The Fed’s “Third Mandate”** - Henry introduces the concept of an unofficial third mandate: the transmission of credit across the economy.
2 (01:48) **Credit Bifurcation: Easy for Businesses, Tight for Consumers** - Explains why the spread between easy credit for high-quality borrowers and tight credit for low-quality borrowers is particularly acute now.
3 (03:36) **Why the Bifurcation is Particularly Acute** - Details the reasons for the current extreme divergence in credit access.
4 (04:58) **The Bank vs. Non-Bank Transmission Mechanism** - Contrasts how rising rates affect bank lending versus non-bank (private credit) lending.
5 (06:48) **Opacity and the Risk of Higher Rates** - Discusses the lack of transparency in private credit and its implications for the cycle.
6 (09:04) **The Fed’s Path: Higher for Longer** - Henry’s view on the Fed’s rate trajectory and the risk of needing to go even higher.
7 (11:06) **Uneven Elasticity of Borrowers** - Explores how different borrowers have vastly different responses to interest rate hikes.

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Show Notes

Henry Peabody, senior investment strategist at GMO, joins Monetary Matters to explain why the Fed has an unofficial third mandate: managing how credit flows through an economy that is increasingly outside the banks. With private credit and fixed-rate borrowing loosening the link between Fed policy and the real economy, Henry argues that rate hikes are hitting consumers and weaker borrowers while large corporates and the AI complex keep borrowing almost regardless of cost. That bifurcation, he says, means the Fed may have to take rates higher than anyone expects to cool demand, adding risk to markets. Jack and Henry discuss the opacity of private credit, why the credit cycle is "one of the most dependable things in finance," why recoveries on software loans could be close to zero, and the lessons of BDCs in 2008. Henry also shares how GMO is positioning in fixed income: less duration and less vanilla credit risk, more short-duration structured credit, and a preference for emerging market local debt. They close on the dollar, where long-term rates are headed, and the fiscal reckoning coming for Social Security. Recorded September 17, 2026.

“Triple Mandate” by Henry Peabody: https://www.gmo.com/americas/research-library/triple-mandate_whitepaper/

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