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A total of ** general insurance companies were operating in Japan as of 2025. Of this number, ** companies were licensed as domestic non-life insurers.

Japan's P&C insurance market

Net premiums written of non-life insurers in Japan amounted to **** trillion yen in the fiscal year 2023. The market is dominated by three insurance groups: Tokio Marine Holdings, MS&AD Insurance Group Holdings, and Sompo Holdings and their subsidiaries, Tokio Marine & Nichido Fire, Mitsui Sumitomo, Aioi Nissay Dowa, and Sompo Japan. The groups generated a net income of nearly *** billion Japanese yen in fiscal 2023. In addition to private insurance companies, cooperatives and mini insurers offer property and casualty insurance products in Japan.

Foreign non-life insurers in Japan

Around ** foreign insurers licensed as branches or agencies were operating in Japan, of which *** were active in the direct and reinsurance business. AIG General Insurance Company was one of the largest foreign non-life insurers in Japan based on premium income and number of employees.