OSFI catastrophe bonds now qualify for a form of capital credit under Canada’s Minimum Capital Test, and the fine print does most of the work the headlines will skip. The Office of the Superintendent of Financial Institutions said on July 20, 2026 that federally regulated insurers can treat natural catastrophe bonds as reinsurance capital — but only if the underlying collateral never leaves Canada.
The collateral has to sit in Canada
The scope is broad on paper: every P&C insurer OSFI regulates federally can use the new treatment, with the sole carve-out being mortgage insurers. The notice defines a natural catastrophe bond in fairly conventional terms: a security that shifts natural-hazard risk from an insurer, reinsurer, or sponsor onto capital-markets investors for a defined peril such as earthquake, hurricane, or flood, while pointedly excluding man-made events like terrorism, war, or cyberattacks.
That definition is not where the notice does its real work. OSFI’s regulatory notice on natural catastrophe bonds conditions capital treatment on where the money sits: the backing funds must be domiciled in Canada and paid in full through a reinsurance security agreement, or the bond simply won’t be recognized for capital purposes. An insurer also has to win OSFI’s sign-off before leaning on a bond to shrink required capital, filing the paperwork specified in the notice’s appendix with its lead supervisor.
Put together, the notice reads less like a green light for the asset class and more like a checklist: onshore collateral, a security agreement, a pre-clearance step — before any capital credit is booked.
A zero margin, not the margin every other reinsurer pays
Under the Minimum Capital Test guideline, whether an arrangement counts as registered or unregistered reinsurance decides whether an insurer can claim capital credit for it in the first place, and unregistered arrangements normally come with a built-in cost: a margin worth 20%, calculated against the premium tied to coverage that hasn’t yet run its course under the reinsurer’s contracts. Collateral backing that exposure is limited too — letters of credit can only stand behind up to 30% of the contract assets an insurer holds against its assuming reinsurers, combined across the book, and none of that backing can come from an IOU written by the reinsurer’s own corporate family — its parent or a sister subsidiary.
Natural catastrophe bonds get booked as unregistered reinsurance too, yet the notice waives the cost that would normally come with that label: the margin drops to zero, as long as the Canada-collateral and pre-approval conditions hold. That beats the baseline treatment laid out for unregistered reinsurance in the Minimum Capital Test guideline, where insurers can otherwise only pledge a narrow menu of backing — deposits placed under a security agreement, comparable deposit arrangements, funds held on the reinsurer’s behalf, or bank letters of credit.
The generosity is the point. OSFI isn’t just extending ordinary unregistered-reinsurance treatment to a new instrument; it is giving catastrophe bonds a better deal than unregistered reinsurance placed offshore normally gets — provided the money backing the bond stays domestic.
Why Bermuda and Cayman vehicles lose out
Global catastrophe bond issuance has been built for two decades on special-purpose vehicles domiciled in Bermuda, the Cayman Islands, and similar offshore hubs — the venues that also housed the California Earthquake Authority’s Sutter Re earthquake cat bond program, among the deals that have drawn record investor demand this year. OSFI’s rule doesn’t ban those structures, but it doesn’t recognize them either: if a special-purpose vehicle’s trust account sits outside Canada, its bond earns no capital credit under the Minimum Capital Test, whatever the underlying risk transfer looks like.
That is a structural nudge toward Canada-domiciled issuance vehicles at a moment when investor appetite for insurance-linked securities keeps widening well beyond its traditional North American and Bermudian base — a trend visible as far away as Chile, where pension funds allocating to catastrophe bonds and other ILS structures have been adding to the asset class’s investor base in Latin America. A capital rule that only rewards onshore collateral effectively asks sponsors to choose between accessing the deepest pool of ILS capital and qualifying for Canadian regulatory credit.
An interim notice with an expiry date
The new treatment took effect the moment the notice was published, but OSFI has built in its own sunset clause. The regulator plans to eventually retire this stand-alone document by folding its substance directly into a future edition of the Minimum Capital Test guideline, scrapping the notice once that happens. In practice, insurers are working under an interim rule that could still be tightened, loosened, or restructured once it gets formally codified.
The timing lines up with a broader round of reinsurance-capital modernisation among prudential regulators. Australia’s APRA finalised its own amendments to the general insurance reinsurance framework, widening access to alternative reinsurance arrangements while protecting policyholders. Those standards take effect January 1, 2027, the fourth completed commitment under APRA’s “Getting the Balance Right” burden-reduction agenda — a parallel push detailed in APRA’s own capital-modernisation work on longevity risk and illiquidity premiums. A regulator overseeing roughly $9.8 trillion in supervised assets is moving the same direction as OSFI: opening the capital framework to alternative risk transfer, on terms the regulator writes first.
For now, OSFI’s version of that opening is narrower than “cat bonds count as capital.” It is closer to: cat bonds count as capital only when Canada keeps the collateral, keeps the paperwork, and keeps the approval.
