Forward guidance and the limits of public information - CEPR

Central bank forward guidance—communication about the likely future path of policy rates—has become a core tool of modern monetary policy. CEPR's analysis examines the limits of this approach, focusing on what happens when central banks and market participants draw on the same public information.

The core insight is that guidance can only add value when it conveys something markets cannot infer on their own—such as a central bank's reaction function or its assessment of risks. When guidance merely restates what public data already imply, it risks adding little beyond noise, or worse, anchoring expectations to a signal that subsequent data may contradict. The paper's framing suggests the effectiveness of guidance depends less on the volume of communication than on its informational content.

For markets, the takeaway is a reminder that guidance is not a guarantee. Rate expectations embedded in futures and bond yields should be read as conditional projections, sensitive to incoming data, rather than commitments. The practical implication for observers is to watch how central banks respond when public information shifts sharply—whether guidance adapts credibly or becomes a source of confusion. That distinction matters for how smoothly policy expectations adjust around major data releases and policy meetings.