Best Health Insurance in Japan
10 insurers ranked and reviewed · Updated May 2026
Healthcare System Overview
Japan has universal mandatory health insurance. All residents must enroll in either Employees' Health Insurance (employer-based, premiums split between employer and employee) or National Health Insurance (NHI, for self-employed, students, and retirees, administered by municipalities). The public system covers approximately 70% of medical costs, with patients paying 10-30% copays depending on age and income. Private supplementary insurance is widely purchased to cover copayments, hospitalization costs, and non-covered services such as cancer insurance and medical/surgical lump-sum payments.
About Health Insurance in Japan
Japan has universal mandatory health insurance. All residents must enroll in either Employees' Health Insurance (employer-based, premiums split between employer and employee) or National Health Insurance (NHI, for self-employed, students, and retirees, administered by municipalities). The public system covers approximately 70% of medical costs, with patients paying 10-30% copays depending on age and income. Private supplementary insurance is widely purchased to cover copayments, hospitalization costs, and non-covered services such as cancer insurance and medical/surgical lump-sum payments.
Our editorial team has evaluated and ranked the top 10 health insurers in Japan based on editorial ratings from trusted sources, customer satisfaction, financial strength, and coverage quality. Rankings are updated regularly to reflect the latest market changes.
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