Japan Earthquake Reinsurance

What Japan Earthquake Reinsurance does

Japan Earthquake Reinsurance Co., Ltd. (日本地震再保険株式会社) is a privately held, Tokyo-based reinsurance company founded on May 30, 1966, under the Earthquake Insurance Law, that serves as the sole private intermediary in Japan's statutory household earthquake reinsurance chain. The company does not transact with consumers; its direct customers are the 27 licensed Japanese property and casualty insurers that sell household earthquake insurance to individual homeowners and renters. These primary insurers cede earthquake liability to Japan Earthquake Reinsurance, which then redistributes the risk via a three-layer scheme: the first layer up to ¥219.9 billion is borne fully by the private sector, the second layer (¥219.9B–¥576.9B) is split 50/50 between government and private cedants, and the third layer above ¥576.9 billion is absorbed ~99.6% by the Government of Japan as reinsurer of last resort, with a ¥12 trillion total payment cap per event. Major shareholders, who are simultaneously its cedants, are Tokyo Marine Nichido (26.9%), Sompo Japan (26.5%), Mitsui Sumitomo Insurance (16.9%), Aioi Nissay Dowa (12.8%), and AIG (6.2%). The company had ¥937.4 billion in total assets and ¥284 billion in net earned premiums as of March 31, 2025.

The company's revenue mechanics consist of recurring reinsurance premiums collected from cedants (subscription-style, governed by a no-loss-no-profit principle under the Earthquake Insurance Act) plus investment income on separately-held policyholder premium reserves managed under a liquidity-and-safety-first mandate. Its 7th Medium-Term Management Plan targets ¥1 trillion in investable assets. Historical reinsurance claim payments include ¥1.29 trillion for the 2011 Great East Japan Earthquake (826,474 claims), ¥391.3 billion for the 2016 Kumamoto earthquakes (215,883 claims), and ¥104.2 billion for the 2024 Noto Peninsula earthquake (113,575 claims). Distribution is fully B2B through the 27-cedant channel plus the government as ultimate reinsurer; end-consumer sales are handled by primary insurers and their agent networks. Go-to-market relies on institutional relationships with primary insurers, public-education/ESG outreach (including a YouTube channel since June 2022 and participation in domestic and international disaster-preparedness forums), and statutory positioning rather than conventional sales or marketing motion.

Technically, the company's "platform" is financial rather than digital: a statutory reinsurance architecture, a monthly earthquake insurance performance reporting system with cumulative payment records dating to the 1970s, and an internal Earthquake Response Committee structure in which all employees hold Disaster Prevention Specialist (防災士) certification. It does not operate consumer-facing software, an API, or a SaaS platform, and AI/ML capabilities are not disclosed as a product surface. The 2026 revision of the three-layer reinsurance scheme (effective April 2026) re-tilts the division of liability between private cedants, the company, and the government — a structural change that will reshape the company's risk profile, premium economics, and capital deployment under the new Medium-Term Plan.

Name

Japan Earthquake Reinsurance

Legal name

日本地震再保険株式会社

Website

https://nihonjishin.co.jp

Company type

Private

Founded year

1966

Operating status

Operating

Headcount range

11–50 employees

Short description

Japan Earthquake Reinsurance is Japan's sole statutory private reinsurer for household earthquake insurance, founded in 1966 under the Earthquake Insurance Act. It provides reinsurance capacity to 27 licensed Japanese P&C insurers, redistributing risk via a three-layer scheme with a Government of Japan backstop.

Ownership category

akta.pro rank

Product category

Earthquake Insurance Reinsurance

NAICS

Reinsurance Carriers (524130)

SIC

Fire, Marine & Casualty Insurance (6331)

akta.pro primary industry

Property Catastrophe Reinsurance (FSAOACAA)

akta.pro secondary industry

Catastrophe Treaty Reinsurance (FSAOAEAE)

Keywords

• Earthquake reinsurance
• Household insurance reinsurance
• Disaster insurance services
• Property catastrophe reinsurance
• Government-backed reinsurance

Headquarters

HQ city

Tokyo

HQ country

Japan

HQ region

Asia

Offices1 record

Markets served

GTM type

B2B

Offering type

Services

Cost components

Operations, Personnel, Technology or R&D, Infrastructure, Others

Revenue model

1. Earthquake Reinsurance Premium Income: Japan Earthquake Reinsurance collects reinsurance premiums from primary insurance companies (cedants) in exchange for assuming their earthquake insurance liabilities. Premiums are collected from policyholders via the primary insurers, separated from fire insurance premiums, and managed by the company and the government. Total net premium income was ¥284 billion as of March 31, 2025.
2. Investment Income on Policyholder Premium Reserves: The company manages and invests premiums collected from earthquake insurance policyholders (held separately from primary insurers' assets). Asset management prioritizes liquidity and safety, with secondary emphasis on returns. The company targets ¥1 trillion in investable assets under its 7th Medium-Term Management Plan.
3. Reinsurance Claim Payments: The company pays reinsurance claims to primary insurers following covered earthquake events. Payments are governed by the three-layer reinsurance scheme. Historical major payments include ¥1.29 trillion for the 2011 Tohoku earthquake, ¥391.3 billion for the 2016 Kumamoto earthquake, and ¥278.3 billion for the March 2022 Fukushima earthquake.

Go-to-market motion2 records

Distribution channels3 records

Marketing channels6 records

Core offering

Japan Earthquake Reinsurance serves as the sole private reinsurer in Japan dedicated to household earthquake insurance. It accepts earthquake insurance liability from 27 licensed domestic property and casualty insurance companies and redistributes that risk via a three-layer reinsurance scheme across the private sector, the company itself, and the Government of Japan. The company also invests and manages the accumulated policyholder premium reserves and publishes monthly earthquake insurance performance statistics.

Product overview

Japan Earthquake Reinsurance is a reinsurance company specializing exclusively in household earthquake insurance. It does not offer products directly to consumers. Its sole business line is earthquake reinsurance: it receives all earthquake insurance liability from primary insurance companies and redistributes that risk to primary insurers and the government via a layered reinsurance-of-reinsurance structure. The company also publishes annual disclosure reports and English-language annual reports, and publishes monthly earthquake insurance performance statistics.

Differentiator

Problem solved

Functional benefit

Products and services

• Household Earthquake Insurance Reinsurance (地震保険再保険) The company's sole core service: a statutory household earthquake reinsurance arrangement provided to 27 licensed Japanese P&C insurance companies, structured through a three-layer scheme that distributes liability across the private insurers, the company itself, and the Government of Japan, with a ¥12 trillion total payment cap per event.
• Policyholder Premium Reserve Asset Management (地震保険積立金運用) Management and investment of premiums collected from household earthquake insurance policyholders (held separately from primary insurers' assets), prioritizing liquidity and safety with a target of ¥1 trillion in investable assets under the 7th Medium-Term Management Plan.
• Earthquake Insurance Education and Disaster Preparedness Content (YouTube channel) Educational video content distributed via the company's YouTube channel covering earthquake insurance literacy, disaster preparedness information, tsunami and volcano alerts, and earthquake statistics, supporting the company's public-facing role in Japan's earthquake insurance system.

Quantifiable outcome

• ¥1.29 trillion in reinsurance payments made to primary insurers following the 2011 Great East Japan Earthquake, covering 826,474 claims
• +3 more outcomes

Named customers5 records

Segments2 records

Ideal customer profiles2 records

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature3 records

Partnerships

Eight partnerships are on record, tiered core and minor.

• Aioi Nissay Dowa Insurance Co., Ltd. (あいおいニッセイ同和損害保険株式会社)coreChannel Partner/ Reseller/ Distributor · 1 April 2025One of 27 licensed Japanese property and casualty insurers that sells household earthquake insurance to end consumers and reinsures the risk with Japan Earthquake Reinsurance. Aioi Nissay Dowa is also a major shareholder (12.8%).
• Tokio Marine Nichido Fire Insurance Co., Ltd. (東京海上日動火災保険株式会社)coreChannel Partner/ Reseller/ Distributor · 1 April 2025The largest shareholder (26.9%) and primary insurer partner in the earthquake reinsurance chain. Tokyo Marine sells household earthquake insurance to individual policyholders and reinsures the risk through Japan Earthquake Reinsurance.
• Sompo Japan Insurance Inc. (損害保険ジャパン株式会社)coreChannel Partner/ Reseller/ Distributor · 1 April 2025Second-largest shareholder (26.5%) and key primary insurer partner providing household earthquake insurance distribution and reinsurance ceding to Japan Earthquake Reinsurance.
• Mitsui Sumitomo Insurance Co., Ltd. (三井住友海上火災保険株式会社)coreChannel Partner/ Reseller/ Distributor · 1 April 2025Third-largest shareholder (16.9%) and primary insurer partner in the earthquake insurance distribution and reinsurance network.
• AIG Non-Life Insurance Ltd. (AIG損害保険株式会社)coreChannel Partner/ Reseller/ Distributor · 1 April 2025Fifth-largest shareholder (6.2%) and licensed primary insurer that cedes household earthquake insurance risk through Japan Earthquake Reinsurance.
• Toa Reinsurance Company (トーア再保険株式会社)minorChannel Partner/ Reseller/ Distributor · 1 April 2025Fourth-largest reinsurance company (4.7% shareholder) and partner in the intra-private reinsurance chain within the three-layer earthquake reinsurance scheme.
• 27 Licensed Insurance Companies (as listed on official partner page)coreChannel Partner/ Reseller/ Distributor · 1 April 2025Full network of 27 licensed Japanese property and casualty insurers (including Tokio Marine, Sompo Japan, MSIG, Aioi Nissay Dowa, AIG, Zurich, Chubb, Sony Sonpo, SBI Sonpo, Rakuten Sonpo, and others) that distribute household earthquake insurance and reinsure with the company. Swiss Re and Starr are listed as international reinsurance company partners.
• Government of Japan (日本国政府)coreStrategic or Co-development PartnerThe government of Japan is the statutory reinsurance partner of last resort under the Earthquake Insurance Act. In the three-layer reinsurance scheme, the government absorbs losses above ¥576.9 billion per earthquake event (~99.6% of the third layer). The government reinsures through Japan Earthquake Reinsurance as the sole private intermediary. The scheme is designed to ensure payment capability even for a Kanto-dataset-level earthquake (¥12 trillion total payment cap).

Scale indicators7 records

Recent moves6 records

Expansion highlights5 records

Direct peers

• Turkish Catastrophe Insurance Pool (TCIP/DASK): Turkey's government-backed compulsory earthquake insurance pool for residential properties. Operates the same statutory catastrophe-pool model as Japan Earthquake Reinsurance, distributing risk between private insurers and a public backstop, with similarly concentrated single-peril exposure.
• Toa Reinsurance Company: A 4.7% shareholder and named intra-private reinsurance chain partner of Japan Earthquake Reinsurance. A Japanese reinsurer that participates in the same earthquake reinsurance scheme, providing the most direct domestic peer comparison.
• Taiwan Housing Earthquake Insurance Fund: Taiwan's residential earthquake insurance residual mechanism explicitly referenced in Japan Earthquake Reinsurance's public seminars and academic collaboration. Functions as a parallel statutory residential earthquake risk pool in a similarly seismically active economy.
• California Earthquake Authority (CEA): California's government-backed residential earthquake insurance pool, the closest international analog. Both are publicly mandated, single-peril residential earthquake insurers/reinsurers created by statute after a major earthquake, with structurally similar roles absorbing catastrophe losses that the private market cannot sustain alone.

Others

• Sompo Japan Insurance Inc. A 26.5% shareholder and one of the 27 primary insurer partners that cedes earthquake risk to Japan Earthquake Reinsurance. Comparable as the largest customer-segment participant in the Japanese earthquake insurance value chain, and a useful peer for understanding cedant economics on the same earthquake book.

Broad incumbents

• Hannover Re: A major global reinsurer with a sizable property catastrophe book. Comparable as a broad-based incumbent reinsurance competitor and capital provider in the global earthquake and catastrophe reinsurance market.
• SCOR SE: A globally diversified reinsurer with meaningful property catastrophe exposure, including in Asia-Pacific. Operates as a broad incumbent peer at the intersection of property catastrophe reinsurance and global capital.
• Swiss Re: Named international reinsurance partner and one of the world's largest reinsurers. Provides global catastrophe reinsurance across multiple perils and geographies; Switzerland-based reinsurance scale leader that anchors the global catastrophe market against which Japan's specialized pool sits.
• Munich Re: The world's largest reinsurer and a benchmark global catastrophe reinsurer. Provides diversified property catastrophe reinsurance across geographies and lines — a broad incumbent counterpart to Japan Earthquake Reinsurance's single-peril domestic franchise.

Regional players

• Starr International Insurance: Named international reinsurance partner with Japan Earthquake Reinsurance. Operates in specialty reinsurance and insurance globally, including Asia-Pacific catastrophe exposure — comparable as an international counterpart operating alongside rather than competing directly with the Japanese statutory pool.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat4 records

Key risks7 records

Key highlights7 records

Customer concentration

Revenue estimate

Valuation estimate

Number of profiles

Profiles11 records

Funding overview

Funding rounds

Investors

Funding detail is available on the Subscription and Enterprise plan.Contact sales →

M&A

Investments

M&A and investment is available on the Subscription and Enterprise plan.Contact sales →

Frequently asked questions about Japan Earthquake Reinsurance