Japan Health Insurance Calculator
All residents of Japan must enroll in health insurance within 14 days of registering their address. Estimate your monthly premium based on your employment type, income, and municipality — and understand exactly what Japanese health insurance covers (and what it doesn't).
Starting June 2027: Unpaid NHI = Visa Denial
Japan will verify NHI and pension payment status for all visa renewals. Unpaid premiums can result in visa denial. Read the full guide →
Health Insurance Is Mandatory in Japan
All residents must enroll within 14 days of registering their address. If employed, your company enrolls you in Employee Health Insurance (社会保険). If self-employed, a student, or not working, you must register for National Health Insurance (国民健康保険) at your ward office. Missing the deadline means back-billing from your arrival date.
Employment Status
Annual Income
Household
Dependents are covered at no extra cost under Employee Health Insurance.
Your Estimated Monthly Health Insurance Cost
Premium Breakdown
Employee Health Insurance premiums are split 50/50 between you and your employer.
~5.0% of monthly salary. Deducted automatically from your paycheck.
Your employer pays this — you don't see it in your paycheck, but it's part of your total compensation cost.
What Japanese Health Insurance Covers
Doctor Visits
70%Insurance covers 70% of costs at participating clinics and hospitals. You pay the remaining 30%.
Prescriptions
70%Same 70/30 split applies at pharmacies. Generic drugs are available and significantly cheaper.
Hospital Stays
70%Major surgery and hospitalization are covered. The High-Cost Medical Care system caps your monthly out-of-pocket.
Dental Care
70%Basic dental treatment is covered. Cosmetic procedures (whitening, implants) are not.
Mental Health
70%Psychiatry and counseling covered, though English-speaking providers are limited.
Maternity
Lump SumA ¥500,000 lump-sum birth allowance (出産育児一時金) is provided. Regular checkups covered.
High-Cost Medical Care System (高額療養費)
Japan has a safety net that caps your maximum monthly out-of-pocket medical expenses. If your 30% copay exceeds the limit, you are reimbursed the difference.
| Annual Income | Monthly Cap |
|---|---|
| ~¥3,700,000 | ¥57,600 |
| ¥3,700,000 - ¥7,700,000 | ¥80,100 + 1% |
| ¥7,700,000 - ¥11,600,000 | ¥167,400 + 1% |
| ¥11,600,000+ | ¥252,600 + 1% |
| Low income (住民税非課税) | ¥35,400 |
NHI vs Employee Health Insurance
| Feature | NHI (国保) | EHI (社保) |
|---|---|---|
| Who enrolls | Self-employed, students, unemployed | Company employees |
| Premium split | You pay 100% | 50% you / 50% employer |
| Dependents | Extra per-person charge | Free (no extra cost) |
| Sick leave pay | None | Up to 2/3 salary for 18 months |
| Maternity leave | Lump sum only | Lump sum + 2/3 salary |
| Enrollment | Ward office (区役所) | Company handles it |
| Rate basis | Previous year income | Current monthly salary |
Recommended Services
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Health insurance is just one part of your cost picture in Japan. Check your full tax and insurance timeline.
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Frequently Asked Questions
How much does health insurance cost in Japan for foreigners?
Health insurance costs depend on your employment type and income. Company employees pay roughly 5% of their monthly salary (employer pays the other 5%). Self-employed residents pay National Health Insurance (NHI) premiums of ¥5,000–¥80,000+ per month depending on income and municipality. Students and low-income residents may qualify for reduced rates. Everyone in Japan must be enrolled — there is no opt-out.
What is the difference between NHI (国保) and Employee Health Insurance (社保)?
National Health Insurance (NHI / 国民健康保険) is for self-employed, students, and unemployed residents. You pay 100% of the premium yourself. Employee Health Insurance (EHI / 健康保険) is for company employees — your employer pays half the premium. EHI also includes benefits NHI lacks: sick leave pay (2/3 salary for up to 18 months), maternity leave pay, and free dependent coverage. Both cover 70% of medical costs.
What does Japanese health insurance cover?
Japanese health insurance covers 70% of medical costs at hospitals, clinics, and pharmacies. You pay the remaining 30% out of pocket. Coverage includes doctor visits, prescriptions, surgery, hospital stays, basic dental care, mental health treatment, and maternity care (plus a ¥500,000 birth allowance). Not covered: cosmetic procedures, some advanced treatments, and most preventive care like annual health checks (though employers often provide these).
What happens if I don't register for health insurance within 14 days?
You are legally required to enroll in health insurance within 14 days of registering your address in Japan. If you miss this deadline, you will NOT be covered for any medical expenses incurred during the gap period — you pay 100% out of pocket. When you eventually register, you will be back-billed for all premiums from your arrival date. There is no grace period or forgiveness for late enrollment.
How is NHI premium calculated in Japan?
NHI premiums have three components: (1) Income-based portion (所得割) — typically 8–11% of your previous year's taxable income, varying by municipality; (2) Per-capita flat rate (均等割) — ¥40,000–¥55,000 per household member per year; (3) Long-term care portion (介護分) — added for ages 40–64 at ~1.7%. The annual cap is ¥1,060,000 (2025). Osaka and Okinawa tend to have the highest rates; Aichi and Saitama tend to be the lowest.
What is the High-Cost Medical Care System (高額療養費)?
Japan's High-Cost Medical Care System caps your maximum monthly out-of-pocket medical expenses. For a typical income (¥3.7–7.7M), the monthly cap is around ¥80,100. If your 30% copay exceeds this limit in any month, you are reimbursed the difference. You can apply for a Limit-Applicable Certificate (限度額適用認定証) in advance so the hospital only charges you up to the cap. This system means even major surgery rarely costs more than ¥100,000 out of pocket per month.
Do dependents cost extra on Japanese health insurance?
It depends on the insurance type. Under Employee Health Insurance (EHI / 社保), dependents (spouse and children) are covered at NO extra cost — this is a major benefit. Under National Health Insurance (NHI / 国保), each household member adds a per-capita flat charge (均等割) of roughly ¥40,000–¥55,000 per year. A family of 4 on NHI can pay ¥120,000–¥165,000 more annually than a single person.
Can I use my home country's health insurance in Japan?
Generally no. If you are a resident of Japan (registered address), you must enroll in Japanese health insurance regardless of any overseas coverage. Travel insurance or home-country plans are not accepted at Japanese hospitals as a substitute. The only exception is short-stay visitors (tourists) who are not registered residents. Digital nomad visa holders (6-month stay) must have private health insurance as a visa requirement, but if they register an address, they also need Japanese coverage.