Korea Health Insurance for Foreigners: NHIS Guide 2026

The first bill surprises almost everyone. Six months after arriving, a letter from an agency you have never contacted asks for more than ₩150,000, for insurance you did not sign up for.

That is the 국민건강보험 (National Health Insurance), run by the National Health Insurance Service (NHIS). For most foreigners staying in Korea long term it is not optional, and it is also one of the best-value things you will pay for here: the same public coverage Koreans get, from the first clinic visit.

This is Part 2 of our Living in Seoul 101 series. It assumes you already have a residence card, which is covered in Part 1.

When do foreigners have to join NHIS?

It depends on how you are insured: as an employee, or on your own (a “regional” subscriber).

• Employees (직장가입자) on a Korean payroll are enrolled by the employer when they start work. The premium comes out of your salary.
• Everyone else (지역가입자, regional subscribers) is enrolled automatically once they have stayed in Korea for six months. That rule has applied since 16 July 2019. You do not apply; NHIS registers you and starts sending bills.

Most visa types are covered, including D-2 and D-4 students, E-series workers, F-series residents, and H-1 working-holiday makers. Permanent residents (F-5) and marriage immigrants (F-6) are assessed exactly like Korean citizens.

Can you opt out with a private or overseas policy? Only in narrow cases. Exclusion requires proof of coverage equivalent to NHIS under a foreign law, foreign insurance or an employment contract. Employee subscribers have to file within 14 days of enrolment being reported. Do not assume an ordinary travel policy will get you out of NHIS; ask NHIS before you rely on one.

How much is Korean health insurance for foreigners in 2026?

If you are self-employed, a student or not working, expect at least ₩158,630 a month in 2026. Students pay half of their calculated premium. Employees pay 3.595% of their salary, matched by the employer.

The logic behind the regional figure: NHIS calculates your premium from your income and assets using the same points system it uses for Koreans. Because foreigners’ overseas income and property are hard to check, if the result comes out below the average premium of all subscribers in the previous November, you pay that average instead. The November 2025 average, which applies to January–December 2026 bills, is ₩158,630: ₩140,210 for health insurance plus ₩18,420 for long-term care insurance.

💳 What different foreigners pay in 2026

A point to note for anyone earning well: the ₩158,630 figure is a floor, not a fixed price. A foreign freelancer with substantial Korean income or property can be assessed higher.

Can I add my family to my Korean health insurance?

Yes, but the rules tightened in 2024. Since 3 April 2024, foreign family members generally have to live in Korea for six months before they can be registered as dependents of an employee subscriber. The main exceptions are the employee’s spouse and children under 19, who can still be added on arrival.

Dependents (피부양자) are covered without paying their own premium, but they must pass NHIS tests:

• Income: total income from all sources under ₩20 million a year.
• Property: a property tax base under ₩540 million.
• Relationship: spouse, parents or grandparents, children, and in limited cases unmarried siblings.
• Paperwork: foreigners must prove the relationship with a document from their home government, apostilled or consular-legalised, with a notarised Korean translation if it is not in Korean.

Regional subscribers cannot have dependents in the same sense. Each foreigner is normally billed as a household of one, but you can ask NHIS to put your spouse and children under 19 on the same household bill. Submit proof of the family relationship, such as a marriage certificate.

What happens if you don't pay?

Arrears follow you to the immigration office. Since August 2019, immigration checks unpaid NHIS premiums when foreigners apply to extend their stay. According to Korean press reports at the time, people with arrears can be limited to a shorter extension, and persistent non-payment can put the extension itself at risk.

The second consequence is at the hospital. NHIS can restrict insurance benefits for foreign regional subscribers who are behind on premiums, which means you pay the full, uninsured price for treatment until the arrears are cleared. Korea’s Constitutional Court ruled in September 2023 that the old version of this rule, which cut benefits without notice or hardship exceptions, went too far, and the National Health Insurance Act was amended in October 2024. The practical advice is the same either way: set up automatic payment and never let a bill slide.

What does NHIS cover?

Foreigners get the same coverage as Korean citizens. That means doctor and hospital visits, hospital stays, prescriptions, a large share of dental and Korean-medicine care, maternity, and national health check-ups.

You still pay a share of each bill (본인부담금). How much depends on where you are treated:

🏥 Your co-payment share under NHIS

There is also an annual cap on co-payments tied to income, above which NHIS reimburses you, although non-covered treatments such as many cosmetic procedures, private rooms and dental implants sit outside it.

The takeaway: for everyday illness, go to a local clinic first. It is cheaper for you and it is how the system is designed. If you are still uninsured, our guide to hospital costs for foreigners shows what uninsured care costs, and our emergency guide covers 119 and late-night pharmacies.

How do you pay your NHIS premiums?

The easiest method is automatic debit from a Korean bank account. You can also pay by virtual account or card. Foreign regional subscribers pay in advance: each month’s premium is due by the 25th of the month before.

Once you are enrolled, you can print an insurance certificate (건강보험 자격득실확인서) from NHIS. Immigration, employers and universities ask for it regularly, so it is worth knowing where to find it.