Risk Capacity and Optimal Monetary Policy

Fuente: arXiv
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Auteur principal: Sun, Rui
Format: Preprint
Publié: 2026
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author Sun, Rui
author_facet Sun, Rui
contents We characterize optimal monetary policy when policy endogenously moves risk premia through redistribution across agents who differ in their willingness to bear risk. The analytical core is Marginal Risk Capacity, the covariance of monetary policy exposures with marginal propensities to take risk. This sufficient statistic governs this channel as MPCs govern the consumption channel. MRC enters the Ramsey criterion as a risk premium wedge that breaks divine coincidence, vanishes if and only if macroprudential tools are available, and generates a new inflation bias under discretion. Solving the Ramsey problem globally reveals a risk capacity trap where transmission collapses, and optimal policy preemptively prevents it.
format Preprint
id arxiv_https___arxiv_org_abs_2603_21044
institution arXiv
publishDate 2026
record_format arxiv
spellingShingle Risk Capacity and Optimal Monetary Policy
Sun, Rui
Theoretical Economics
We characterize optimal monetary policy when policy endogenously moves risk premia through redistribution across agents who differ in their willingness to bear risk. The analytical core is Marginal Risk Capacity, the covariance of monetary policy exposures with marginal propensities to take risk. This sufficient statistic governs this channel as MPCs govern the consumption channel. MRC enters the Ramsey criterion as a risk premium wedge that breaks divine coincidence, vanishes if and only if macroprudential tools are available, and generates a new inflation bias under discretion. Solving the Ramsey problem globally reveals a risk capacity trap where transmission collapses, and optimal policy preemptively prevents it.
title Risk Capacity and Optimal Monetary Policy
topic Theoretical Economics
url https://arxiv.org/abs/2603.21044