## The Insurer Channel of Monetary Policy

_IMF Working Papers, March 14, 2025_

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## Bibliographic details
- Authors: Divya Kirti, Akshat V. Singh
- Published: March 14, 2025
- Series: IMF Working Papers
- DOI: https://doi.org/10.5089/9798229003667.001

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### Summary
- Study of the role of life insurers in the transmission of US monetary policy.
- Insurers have uniquely long-term liabilities.
- Insurers face a trade-off between matching liability duration exposure by investing in long-term government debt and earning higher yields by shifting to risky—but shorter-term—private debt.
- Long-term risk free rates play a critical role in shaping insurers' demand for risky private debt.
- Contractionary monetary policy shocks that raise long-term risk-free rates reduce insurers' demand for private debt, raising risk premia.
- Granular, high frequency data and regulatory changes are used to trace how insurers' investment behavior transmits monetary policy shocks to risk premia.

### Mechanism and Key Findings
- Liability duration exposure leads insurers to prefer long-term government debt for duration matching.
- A trade-off exists: matching duration with long-term government debt versus earning higher yields by shifting to risky, shorter-term private debt.
- Changes in long-term risk-free rates alter this trade-off and thereby insurers' demand for private debt.
- Contractionary monetary policy shocks that raise long-term risk-free rates:
  - reduce insurers' demand for private debt;
  - raise risk premia.

### Data and Methodology
- Analysis uses granular, high frequency data.
- Regulatory changes are exploited as part of the identification strategy to trace transmission from insurers' investment behavior to risk premia.

### Policy Implications
- Long-term risk-free rates are a critical transmission channel: monetary policy that affects long-term rates will influence insurers' portfolio allocation between government and private debt.
- Changes in insurers' demand for private debt can materially affect risk premia in securities markets, with implications for financial markets and financial institutions, particularly insurance companies and other NBFIs.

_Italic source attribution: IMF Working Papers — "The Insurer Channel of Monetary Policy" by Divya Kirti and Akshat V. Singh, March 14, 2025._

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_Source: https://www.imf.org/en/publications/wp/issues/2025/03/14/the-insurer-channel-of-monetary-policy-565244_