The Lombard Review

Economists can't agree on where rates should settle

Filter-based vs forward-rate r*

Flip this bank
Flip this bank Photo: Scott Thompson/Wikimedia Commons · CC BY 3.0

Key dataHLW r* ~1.1%

The annual Jackson Hole symposium has exposed the deep intellectual fractures dividing monetary theorists. As policymakers debate whether current interest rates are sufficiently restrictive, economists remain utterly unable to agree on where the neutral rate of interest (r*) actually resides. The ambiguity is not a minor statistical rounding error; it is the fundamental parameter that determines whether central banks should keep tightening or begin easing.

Schanzengraben in Zürich (Switzerland), as seen from Alter Botanischer Garten, Männerbadi in the foreground, Börse Zürich in the background
Schanzengraben in Zürich (Switzerland), as seen from Alter Botanischer Garten, Männerbadi in the foreground, Börse Zürich in the background Photo: Roland zh/Wikimedia Commons · CC BY-SA 3.0

Model Uncertainty at Jackson Hole

Standard semi-structural models, such as the Holston-Laubach-Williams framework, continue to estimate r* near historical lows around one per cent, suggesting policy is currently hyper-restrictive. Conversely, financial market pricing and persistent economic momentum imply that the real neutral rate has drifted significantly higher. Policymakers are effectively flying a supersonic jet through dense fog with an altimeter that has lost calibration.

The Bombay Stock Exchange building on Dalal Street, Mumbai
The Bombay Stock Exchange building on Dalal Street, Mumbai Photo: BSEINDIA/Wikimedia Commons · CC BY-SA 3.0

Operating monetary policy without a dependable measure of the neutral rate turns central banking into an exercise in pure trial-and-error, where the true policy boundary is discovered only when something breaks.

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