Policy

Central Bank Credibility

The market's belief that a central bank will follow through on its stated inflation and policy objectives — embedded in long-term inflation expectations.

Definition

Credibility is measured indirectly via 5y5y forward breakevens (Fed), the JGB-Treasury yield differential (BoJ), and EM real yields. A credible central bank anchors long-term inflation expectations near target regardless of near-term shocks.

Lost credibility is expensive to rebuild — Volcker's 1980s rate hikes were the cost of recovering Fed credibility after the 1970s.

Why it matters

Credibility is the foundation of every monetary policy tool. Without it, forward guidance is hollow and QE/QT have unpredictable effects.

Worked example

March 2022: 5y5y forward breakevens crossed 2.6%, signaling expectation un-anchoring risk. The Fed's hawkish pivot — 75bp hikes in quick succession — was driven by credibility defense.

Frequently asked

How is credibility measured?⌄
Long-horizon inflation expectations (5y5y breakevens, surveys), the spread between actual and target inflation over multiple cycles, and political-independence indices.
Can credibility be lost suddenly?⌄
Yes — a single major policy error or political interference can shift expectations within months.
Why is BoJ credibility different?⌄
Decades of undershooting target erased asymmetric credibility — markets now believe BoJ will tolerate above-target inflation more than below.
Does credibility help in crisis?⌄
Critically — credible central banks can deploy massive measures (QE, swap lines) without un-anchoring expectations.

Track it on Market Ontology

Central Bank Analysis Tool

Related terms

Forward Guidance

Policy

Policy Error

Policy

Fiscal Dominance

Policy

Stagflation

Macro

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