Catastrophe bond calculation agent
An independent third party, often a modeling firm, tasked with determining whether an event crossed a catastrophe bond's trigger and for what amount.
At the time of a loss, a catastrophe bond pits two parties with opposing interests against each other: the sponsor wants to be paid, the investor wants to keep its principal. So that neither side settles the question, the documentation appoints a calculation agent, a third party with no stake in the outcome, which applies the agreed formula to published data: magnitude and depth, central pressure, an industry loss index or a modeled loss. Its report is in principle final, which shortens settlement to a few weeks and avoids litigation. The risk then moves to the drafting: a poorly specified data source or a late revision of the measurements can change the result. A careful investor therefore reads the calculation agent clause as closely as the trigger.
After Hurricane Melissa in late October 2025, it was the analysis by AIR Worldwide, calculation agent for the catastrophe bond the World Bank issued for Jamaica in 2024, based on the central pressure and track published by the National Hurricane Center, that established the full 150-million-dollar payout.
Follow the research
One letter a week. First, the week's underwriting note, when one is published: a dated, argued decision, signed by Paul Bernardski. Then what the observatory published on cyber risk, political risk and insurance. No account, no tracking.
No spam, one-click unsubscribe, no data ever sold.