AM Best Affirms Credit Ratings of Tokio Marine & Nichido Fire Insurance Co., Ltd. and Its Subsidiaries

HONG KONG--(BUSINESS WIRE)-- AM Best has affirmed the Financial Strength Rating (FSR) of A++ (Superior) and the Long-Term Issuer Credit Ratings (Long-Term ICRs) of “aa+” (Superior) of Tokio Marine & Nichido Fire Insurance Co., Ltd. (TMNF) (Japan) and its subsidiaries. TMNF is the wholly owned non-life insurance operating subsidiary of Tokio Marine Holdings, Inc. (TMH). The outlook of these Credit Ratings (ratings) is stable. (See below for a detailed listing of the U.S. subsidiaries.) These companies are collectively referred to as TMH.

The ratings reflect TMH’s balance sheet strength, which AM Best assesses as strongest, as well as its strong operating performance, very favourable business profile and very strong enterprise risk management (ERM). AM Best views TMNF as integral to the TMH group, given its financial, operational and strategic importance as TMH’s core non-life insurance operating entity. Accordingly, the ratings of TMNF are based upon the credit fundamentals of TMH, which are then extended to TMNF.

TMH’s balance sheet strength is supported by its risk-adjusted capitalization being at the strongest level, as measured by Best’s Capital Adequacy Ratio (BCAR). The group’s economic solvency ratio was 268% as of 31 March 2026, well above its target range and the 100% regulatory requirement under Japan’s new economic value-based solvency regime. The group maintains highly conservative financial leverage and strong interest coverage, with an adjusted financial leverage ratio of 5.8% as of 31 March 2026, as calculated by AM Best, including credit for subordinated bonds. As one of the largest listed insurance groups in Japan, TMH benefits from strong financial flexibility and good access to equity and debt capital markets when needed. While the group remains exposed to equity risk and growing underwriting risks from overseas expansion, it retains substantial capital to absorb potential volatility. The group has accelerated its strategic equity disposal programme, targeting full disposal by fiscal-year 2029, which is expected to reduce its overall equity risk exposure materially over the medium term.

TMH’s operating performance remained strong in fiscal-year 2025, supported by resilient domestic underwriting and improving profitability in its international operations. The group adopted International Financial Reporting Standards (IFRS) in fiscal-year 2025, reporting insurance revenue of JPY 7,694 billion and an insurance service result of JPY 1,150 billion. Its domestic non-life operations reported an improved combined ratio in fiscal-year 2025, supported by lower natural catastrophe losses and accumulated fire insurance rate revisions, despite persistent inflationary pressure on automobile claims. TMH’s overseas business performance continued favourable performance, led by strong profit growth in North America. TMH again exceeded its annual disposal target of strategic equity holdings, offloading JPY 746 billion against a plan of JPY 600 billion. While the realised gains on these disposals no longer pass through reported earnings under IFRS, they contribute directly to the group’s capital base, and AM Best expects the redeployment of the proceeds into interest-bearing assets and business investment to more than offset the lost dividend income over time.

TMH maintains a diversified business profile with operations spanning across different markets and lines of business globally, with overseas businesses contributing approximately 60% of its insurance service revenue. In Japan, the group maintains leading positions across all major non-life business lines through TMNF, commanding a market share exceeding 25% of NPW. Internationally, the group continues to benefit from a disciplined expansion strategy, with high-quality subsidiaries in North America serving as the cornerstone of its overseas earnings. The strategic partnership with Berkshire Hathaway Group, which has taken a minority equity stake in TMH, is expected to support its access to larger acquisition opportunities over time.

The group maintains a sophisticated ERM framework that is embedded throughout its organisation. AM Best believes that TMH’s risk management capabilities align closely with its highly complex and diverse risk exposures.

Negative rating actions could occur if there is material deterioration in risk-adjusted capitalisation, such as substantial investment losses caused by capital market volatility or large-scale natural catastrophes. Negative rating actions could occur if there is persistent and significant deterioration in TMH’s operating performance, stemming from weak underwriting and investment results. Positive rating actions could occur if TMH demonstrates exceptionally strong and consistent operating performance metrics. However, the likelihood of such actions occurring remains limited at present.

The FSR of A++ (Superior) and the Long-Term ICRs of “aa+” (Superior), have been affirmed with stable outlooks for the following subsidiaries of Tokio Marine Holdings, Inc. (TMH):

• Tokio Marine America Insurance Company
• Trans Pacific Insurance Company
• TM Specialty Insurance Company
• TNUS Insurance Company

Ratings are communicated to rated entities prior to publication. Unless stated otherwise, the ratings were not amended subsequent to that communication.

This press release relates to Credit Ratings that have been published on AM Best’s website. For all rating information relating to the release and pertinent disclosures, including details of the office responsible for issuing each of the individual ratings referenced in this release, please see AM Best’s Recent Rating Activity web page. For additional information regarding the use and limitations of Credit Rating opinions, please view Guide to Best’s Credit Ratings. For information on the proper use of Best’s Credit Ratings, Best’s Performance Assessments, Best’s Preliminary Credit Assessments and AM Best press releases, please view Guide to Proper Use of Best’s Ratings & Assessments.

AM Best is a global credit rating agency, news publisher and data analytics provider specialising in the insurance industry. Headquartered in the United States, the company does business in over 100 countries with regional offices in London, Amsterdam, Dubai, Hong Kong, Singapore and Mexico City. For more information, visit www.ambest.com.

Copyright © 2026 by A.M. Best Rating Services, Inc. and/or its affiliates. ALL RIGHTS RESERVED.

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Charles Chiang
Senior Financial Analyst
+852 2827 3427
charles.chiang@ambest.com

Chanyoung Lee
Director, Analytics
+852 2827 3404
chanyoung.lee@ambest.com

Thomas Keelan
Senior Financial Analyst
+1 908 882 1925
thomas.keelan@ambest.com

Christopher Sharkey
Associate Director, Public Relations
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christopher.sharkey@ambest.com

Al Slavin
Senior Public Relations Specialist
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al.slavin@ambest.com

Source: AM Best