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arXiv · 2506.18895

Disaster Risk Financing through Taxation: A Framework for Regional Participation in Collective Risk-Sharing

Fallou Niakh·Arthur Charpentier·Caroline Hillairet·Philipp Ratz
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Abstract

We consider an economy composed of different risk profile regions wishing to be hedged against a disaster risk using multi-region catastrophe insurance. Such catastrophic events inherently have a systemic component; we consider situations where the insurer faces a non-zero probability of insolvency. To protect the regions against the risk of the insurer's default, we introduce a public-private partnership between the government and the insurer. When a disaster generates losses exceeding the total capital of the insurer, the central government intervenes by implementing a taxation system to share the residual claims. In this study, we propose a theoretical framework for regional participation in collective risk-sharing through tax revenues by accounting for their disaster risk profiles and their economic status.

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Fallou Niakh, Arthur Charpentier, Caroline Hillairet, Philipp Ratz. 2025-06-23. Disaster Risk Financing through Taxation: A Framework for Regional Participation in Collective Risk-Sharing. https://arxiv.org/abs/2506.18895

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