Determinacy and E‐Stability with Interest Rate Rules at the Zero Lower Bound

Yunjong Eo and Nigel McClung

Journal of Money, Credit and Banking, 2025, vol. 57, issue 4, 951-979

Abstract: We evaluate and compare alternative interest rate rules, namely, average inflation targeting (AIT), price‐level targeting (PLT), and traditional inflation targeting rules, in a standard New Keynesian model that features recurring, transient zero lower bound regimes. We use determinacy and expectational stability (E‐stability) of equilibrium as the criteria for stabilization policy. We find that PLT policy, including nominal GDP targeting as a special case, most effectively promotes determinacy and E‐stability among the policy frameworks, whereas standard inflation targeting rules are prone to indeterminacy. AIT can induce determinacy and E‐stability effectively, provided the averaging window is sufficiently long.

Date: 2025
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https://doi.org/10.1111/jmcb.13129

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Persistent link: https://EconPapers.repec.org/RePEc:wly:jmoncb:v:57:y:2025:i:4:p:951-979

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