Japan Post Insurance, known widely as Kampo, has agreed with French reinsurer SCOR SE to explore shifting a slice of its oldest liabilities off its own books. Under a memorandum of understanding signed on July 10, 2026, Kampo would retrocede, or re-reinsure, underwriting risk tied to insurance contracts it took on before its 2007 privatization. Those contracts originated with the state postal insurance system and were passed to Kampo through an earlier reinsurance arrangement with the government's postal savings and insurance management organization.
The mechanism is a new reinsurance vehicle that SCOR would establish, fund and operate. The vehicle is meant to take on underwriting risk from both Kampo and SCOR itself, pooling the two books to spread the risk more broadly. To keep that vehicle financially sound, and to make sure the retroceded contracts are properly managed once they sit inside it, Kampo intends to take an equity stake of its own. The company has been explicit about the limit: its voting rights in the vehicle are planned to stay under 50 percent.
| Feature | Detail |
|---|---|
| Partner | SCOR SE (Paris-listed reinsurer) |
| Transaction type | Retrocession of pre-privatization underwriting risk plus equity investment in a new reinsurance vehicle |
| Vehicle setup | Established, funded and operated by SCOR |
| Kampo's stake | Voting rights planned to stay under 50% |
| Status | Memorandum only; final agreement and regulatory approvals still required |
None of this is signed and sealed. The companies describe the MOU as the basis for continued talks on transaction details, and say the actual reinsurance deal and equity investment depend on reaching a final agreement and securing the necessary regulatory approvals. Kampo has also flagged that it is still reviewing the effect on its own earnings and will disclose further details if anything material turns up.
SCOR brings scale to the arrangement: the Paris-listed reinsurer generated EUR15.4bn in gross written premium in 2025 across more than 35 offices serving clients in over 150 countries, according to the disclosure. For Kampo, the appeal is straightforward balance-sheet management: legacy underwriting risk from decades-old postal-era policies is exactly the kind of long-tail exposure insurers look to offload rather than carry indefinitely on their own capital. Taking a minority stake in the vehicle that absorbs that risk lets Kampo keep a hand on how the retroceded book is run without consolidating it back onto its own balance sheet.
What happens next is procedural but consequential. Both sides need to work out transaction terms, line up regulatory sign-off, and reach a final agreement before any capital changes hands or risk actually moves. Kampo has committed to announcing the deal formally once those steps clear, which leaves the size of the retroceded book, the price of Kampo's stake and the earnings effect all still open questions.