Here are the hidden flaws in Warsh’s new way of tracking inflation

Kevin Warsh’s preferred approach to tracking inflation is drawing scrutiny from economists at Nomura, who argue that the alternative measure offers no better predictive power than conventional core readings. The finding matters because the choice of inflation gauge can shape how markets interpret the policy outlook, particularly when officials signal openness to alternative frameworks.

The debate is not merely academic. Core inflation strips out volatile food and energy prices to reveal underlying price trends, and it has long anchored expectations for monetary policy. If an alternative measure fails to forecast inflation more accurately, its usefulness as a policy guide becomes harder to justify — a point markets may weigh when assessing future rate decisions.

What to watch: whether this methodology gains traction among policymakers, and how coming inflation prints compare across both measures. Divergence between the two could complicate the policy narrative and add uncertainty to rate expectations. For now, the Nomura critique suggests the case for replacing core readings remains unproven.