National Health Insurance in Korea for Foreign Residents

Enrolment is compulsory

Korea’s National Health Insurance covers foreign residents on broadly the same basis as nationals, and enrolment is mandatory — not a choice between this and private cover.

Two routes:

Employee subscriber (jikjang gaipja, 직장가입자) If you work for a company enrolled in the scheme, your employer registers you. Premiums come out of payroll.

Local subscriber (jiyeok gaipja, 지역가입자) Everyone else — students, freelancers, dependants not covered elsewhere, and those whose employer is not enrolled. Foreign residents staying six months or more are generally enrolled automatically once that threshold is met.

The automatic enrolment catches people out. Bills arrive from the National Health Insurance Service without any application having been made, and ignoring them does not undo the enrolment. If you receive one, engage with it rather than assuming it is a mistake.

How the premium is calculated

The two routes are calculated quite differently, and this is where foreign residents encounter friction.

Employee subscribers A percentage of your monthly remuneration, split roughly half and half with your employer. Long-term care insurance is added as a percentage of the health premium. Straightforward and generally the cheaper route.

Local subscribers Calculated on income and property. For Korean nationals this is assessed from domestic records.

For foreign local subscribers, the Service cannot see overseas income or assets, so a minimum premium applies — set with reference to the average premium among subscribers generally. The consequence is that a foreign student or freelancer with very little Korean income can face a premium that feels disproportionate, because it is not calculated from their actual income.

Dependants An employee subscriber can register a spouse and certain family members as dependants at no additional premium, subject to income, asset and residency conditions. Where eligible, this is usually much cheaper than the family member being enrolled as a local subscriber. It is worth checking eligibility rather than assuming.

What you get

Coverage is broad and the out-of-pocket share is comparatively low.

• Outpatient care — you pay a portion; the rest is covered
• Hospitalisation — a smaller patient share
• Prescription medicines on the covered list
• Dental and oriental medicine, partially
• Health screening at defined intervals

Not covered, or covered only partly: most cosmetic procedures, some dental work such as implants beyond defined limits, private hospital rooms, and treatments outside the benefit list. Many residents add a private supplementary policy for these, but that supplements rather than replaces the national scheme.

Out-of-pocket ceiling. Where a household’s annual share exceeds a threshold set by income level, the excess is refunded. This matters for anyone facing a serious illness, and it applies to foreign subscribers.

You can use any hospital or clinic; there is no gatekeeping registration. Bring your alien registration card.

Arrears, departure and refunds

Falling behind Unpaid premiums lead to restricted benefits — you may be charged the full cost of treatment. Arrears also attract late payment charges.

More significantly for foreign residents, unpaid premiums can affect visa extension applications. Immigration offices check compliance with public obligations, and outstanding health insurance debt is visible. This is the reason to resolve arrears early rather than treating them as a bill that can wait.

If you genuinely cannot pay, contact the Service. Instalment arrangements and reductions exist for defined circumstances, and applying is better than accumulating.

Leaving Korea temporarily Departing for an extended period may allow suspension of local subscriber premiums. This requires notification with evidence of departure and is not automatic.

Leaving permanently Cancel your enrolment and settle the final premium. Overpayments are refundable but require an account that is still open — so sequence this before closing your bank accounts, alongside any national pension lump-sum refund claim.

The Service operates a foreign-language helpline, which is generally the fastest way to resolve a specific case.