This guide is for expats, English teachers, investors, and anyone moving to Korea who wants to understand the National Health Insurance Service (NHIS, Gukmin Geongang Boheom). The short answer: if you stay in Korea for six months or more on most visa types, you are in — premiums are deducted automatically if you have an employer, or billed monthly if you do not.
How it works
Korea runs a single-payer (one insurer, the government) health system. The NHIS collects premiums from workers, employers, and self-employed residents, then pays hospitals and clinics directly. You pay only a copayment (your share of each bill) when you visit a provider. There is no claims process to file.
Every foreigner is sorted into one of two subscriber categories.
Workplace subscribers (직장가입자, jikjang gaipja)
If a Korean employer registers you for payroll, you become a workplace subscriber. Your premium is deducted from your salary before you receive it. You never need to visit an NHIS office — enrollment is automatic on your first payroll run.
Regional subscribers (지역가입자, jiyeok gaipja)
Freelancers, business owners, students, and anyone not on a Korean payroll become regional subscribers. NHIS enrolls you automatically once you have been resident in Korea for six months. Bills arrive monthly by post or via the NHIS app.
The six-month rule
Before April 2024, some foreign residents could join NHIS immediately on arrival. A legal amendment effective April 3, 2024 tightened this: foreigners must now complete six continuous months of residence before mandatory NHIS enrollment applies. The clock starts from your entry date, not from your alien registration date. Workplace subscribers employed from day one are enrolled from their first day of work, regardless of the six-month threshold.
Dependents
A workplace subscriber’s spouse and unmarried children under 19 may be added as dependents at no extra premium, provided they have no independent income. To register a foreign dependent, bring an official family relations certificate (apostilled or consularly verified, translated into Korean) to any NHIS branch. Foreign dependents of regional subscribers must generally satisfy the same six-month residency requirement, except for children under 10.
Why Korea does it this way
Korea built its national health system incrementally from 1977, starting with large-company employees, then expanding to smaller firms and the self-employed, achieving universal coverage by 1989. The single-payer design was chosen to pool risk across the entire population and keep administrative costs low. Korea’s system is widely studied because it achieved near-universal coverage in just over a decade while controlling costs relative to comparable OECD countries. Extending mandatory enrollment to foreigners followed the same logic: a larger risk pool keeps premiums lower for everyone. The six-month waiting period added in 2024 was designed to discourage short-term visitors from enrolling solely to access expensive treatment (sometimes called insurance tourism).
The numbers that matter
| Item | Rate / Amount | Source & as-of date |
|---|---|---|
| Workplace subscriber total health premium rate | 7.09% of monthly salary (employee pays 3.545%, employer pays 3.545%) | NHIS official contribution rate table, January 2025 |
| Workplace subscriber total health premium rate (2026) | 7.19% of monthly salary (employee pays 3.595%, employer pays 3.595%) | NHIS notification of contribution rates, January 2026 |
| Long-term care insurance add-on (노인장기요양보험, noin janggi yoyangboheom) | 13.14% of your health insurance premium (≈ 0.47% of salary in 2026) | NHIS contribution rate notification, January 2026 |
| Regional subscriber point value | ₩208.4 per contribution point (2025); ₩211.5 per point (2026) | NHIS, as of January each year |
| Foreign regional subscriber minimum monthly premium (health only) | Approximately ₩140,210 (2026); check the current figure at nhis.or.kr | NHIS foreigner guidance, 2026 |
| Foreign regional subscriber minimum (health + long-term care) | Approximately ₩158,630 per month (2026); check the current figure at nhis.or.kr | NHIS foreigner guidance, 2026 |
| Outpatient copay — local clinic (의원, euiwon) | Approximately 30% of covered costs | NHIS benefits schedule, 2025 |
| Outpatient copay — general hospital | Approximately 40–60% of covered costs depending on facility tier | NHIS benefits schedule, 2025 |
| Inpatient copay (standard) | 20% of covered costs; 5% for registered cancer patients | NHIS benefits schedule, 2025 |
| Dependent income threshold (workplace subscriber) | Annual income under ₩20 million; assets under ₩540 million | NHIS dependent eligibility rules, 2025–2026 |
What it means for you
If you are an employed worker
Your employer handles enrollment. Confirm your alien registration card (ARC) number is correctly recorded in the payroll system — errors can delay coverage. You can verify enrollment and download your insurance card through the NHIS website (nhis.or.kr) or the NHIS app. Add your spouse and children as dependents early; NHIS cannot backdate dependent coverage.
If you are a freelancer, self-employed, or a student
You will receive your first regional subscriber bill after six months of residence. The premium floor for foreigners (roughly ₩158,000 per month including long-term care in 2026) applies even if your Korean income is zero. NHIS sets premiums based on income, real estate holdings, and vehicle ownership as reported to Korean authorities. If your assets and income are overseas and not reported in Korea, NHIS may still apply the foreigner average floor. Confirm your premium calculation at any NHIS branch or call the NHIS international helpline (1577-1000, Korean; some English support available).
If you own property or have significant assets in Korea
Regional subscriber premiums are scored on declared Korean assets, including real estate. Jeonse deposits (a large lump-sum deposit paid to a landlord instead of monthly rent) may be assessed as an imputed asset. If you believe your score is wrong, you can request a formal reassessment at an NHIS branch within 90 days of the bill date.
If you plan to leave Korea
Premiums stop accruing once you deregister your alien registration. If you overpaid, NHIS will refund the balance to a Korean bank account. Keep your bank account open until the refund clears.
FAQ
Can I opt out of NHIS and use only private insurance?
No. Once you meet the enrollment criteria — employment on a Korean payroll, or six months of residence — NHIS membership is mandatory by law. Private health insurance can supplement NHIS (covering the copayment gap or uncovered services such as cosmetic procedures), but it cannot replace NHIS. Unpaid NHIS premiums accrue interest and can result in visa renewal difficulties.
Does NHIS cover dental and eye care?
Partially. NHIS covers basic dental procedures such as tooth extractions, fillings for certain conditions, and scaling (teeth cleaning) once per year for adults. Orthodontics (braces) and most cosmetic dental work are not covered. For eyes, standard eye examinations at clinics are covered; prescription glasses and contact lenses are generally not. LASIK and cosmetic procedures are fully out of pocket.
What happens if I leave Korea and come back — does the six-month clock reset?
Short trips abroad (under 30 days, generally) do not reset the clock. Extended absences may. NHIS tracks continuous residence through your immigration record. If you deregister your ARC when you leave and re-register when you return, a new six-month period begins. If you maintain your ARC registration while abroad, the rules are more nuanced — confirm with NHIS before leaving if this affects your situation.
Was this useful?
What made the difference? Pick one.
What made the difference? Pick one.
Thanks. We read every answer.
_Seoul_National_University_Bundang_Hospital.jpg){kind=link}