National Health Insurance for foreign residents

It is compulsory, and it is connected to your visa

Foreign residents in Korea are required to be enrolled in National Health Insurance. Employed people are enrolled by their employer from their first day; everyone else becomes a compulsory regional subscriber after six months of residence.

The part that makes this more than an administrative obligation: NHIS arrears are visible to immigration. A long-outstanding balance can block a visa extension or a change of status. Unpaid premiums are not a bill you can quietly ignore in the way an unwanted subscription might be.

If you genuinely cannot pay, call 1577-1000 and arrange instalments. NHIS would far rather agree a plan than accumulate arrears, and the conversation is available in English.

The two categories

Workplace subscriber (직장가입자)

If you are employed, this is you. The premium is a percentage of your monthly salary, split roughly evenly between you and your employer, and deducted at source. Long-term care insurance is added as a percentage of the health premium.

You do nothing. It appears on your payslip as two lines — 건강보험 and 장기요양보험 — and it is a deductible item on your year-end settlement unless you elected the flat rate.

Our tax calculator shows the exact figures for any given salary, alongside pension and employment insurance.

Regional subscriber (지역가입자)

Everyone else: students, job seekers, freelancers, the self-employed, and people between jobs. You pay the full premium yourself, assessed on income and property rather than on salary.

The important difference for foreign residents is that a minimum premium applies. Unlike Korean regional subscribers, whose premium can fall very low if their assessed income and property are minimal, foreign regional subscribers pay at least a floor amount. A student with no income still pays it.

This is the single most common source of surprise for foreign residents — particularly students, who often budget for tuition and rent and not for a monthly insurance premium in the low-to-mid hundreds of thousands of won.

Dependant (피부양자)

A spouse or family member of a workplace subscriber, with no significant income of their own, can be added to that person's coverage at no additional premium. This is worth checking before registering separately as a regional subscriber — for a non-working spouse it is the difference between paying a full premium and paying nothing.

When coverage starts

The six-month clock does not reset for ordinary trips abroad. There is no retroactive coverage for treatment received before enrolment, so the gap between arriving and enrolling is a genuine exposure — travel insurance for the first six months is a sensible purchase for anyone not employed on arrival.

What you actually get

Korean healthcare is, by the standards of most countries foreign residents come from, remarkably good and remarkably cheap at the point of use.

Covered

• GP and specialist consultations. You pay a co-payment, commonly 20–30% at a clinic and more at a large hospital.
• Hospital treatment and surgery.
• Prescriptions, at a co-payment.
• Maternity care, with additional government support schemes on top.
• Most diagnostics — blood tests, X-rays, ultrasound, and much imaging.
• A free general health screening every two years, and cancer screening at the relevant ages.

Not covered

• Cosmetic procedures.
• Most dental work beyond basic treatment. Implants and orthodontics are largely out of pocket.
• Private hospital rooms.
• Elective screening beyond the standard programme.
• Some newer drugs and treatments pending coverage decisions.

No referral needed

You can walk into a dermatologist, an orthopaedist or an ENT specialist directly, without a GP referral. This is one of the genuine structural advantages of the Korean system and it takes new arrivals a while to believe.

A typical clinic visit with insurance costs a few thousand won plus the prescription. Tertiary hospitals do want a referral, and going without one raises your co-payment substantially — that is the mechanism that keeps the big hospitals from being overwhelmed.

Using it in practice

• Bring your registration card. The clinic looks you up on it. Some now verify by fingerprint or mobile ID.
• Pharmacies are separate from clinics. The doctor prescribes; you take the prescription to a pharmacy, usually the one next door.
• Emergency care is 119. Emergency room treatment is covered, with a higher co-payment.
• Finding English-speaking care: major hospitals in Seoul, Busan and other large cities have international healthcare centres with English-speaking coordinators. The Korea Travel Hotline on 1330 offers medical interpretation, and the Danuri helpline on 1577-1366 covers more languages.

Private insurance on top

Many residents add private supplementary insurance (실손보험) to cover the co-payments and the excluded items. It is inexpensive relative to private insurance elsewhere, because it sits on top of a public system rather than replacing one.

It is worth considering if you have dental needs, an ongoing condition, or a family. It is not a substitute for NHIS enrolment, which remains compulsory regardless.

Administration to keep on top of

• Set up a direct debit. Missed paper bills are the main cause of arrears, and arrears are the thing that reaches immigration.
• Check your payslip shows the deduction if you are employed. Employers who fail to enrol staff exist, and it is your coverage at risk.
• Keep NHIS updated on your address separately from immigration. They are different records and updating one does not update the other.
• Tell NHIS when your circumstances change — starting or leaving a job moves you between categories, and the premium changes with it.

Leaving Korea

Coverage ends when your residence ends. Call 1577-1000 to close your enrolment and settle the final premium before you go. Arrears attach to your registration number and resurface if you ever return on any status.