If you are moving to Korea on a long-term visa, the Alien Registration Card — the 외국인등록증, usually shortened to ARC — is the single most important piece of plastic you will own. It is your official ID inside Korea, and it carries a resident registration number that almost every system here is built around. Without it you are stuck in a frustrating loop: you cannot fully open a bank account, you cannot get a proper postpaid phone plan, and you cannot be enrolled in the national health insurance system the way a resident is.
The good news is that the process is well defined and entirely doable on your own. You arrive, you gather a short stack of documents, you book a slot at an immigration office, you show up, you pay a small fee, and a couple of weeks later you have your card. This guide walks through each step in plain English, flags the parts that trip people up, and tells you exactly where to confirm the details that change from time to time.
What the ARC actually is
The ARC is the residency ID issued to foreign nationals who live in Korea for an extended period. Physically it is a credit-card-sized card with your photo, your name, your nationality, your status of stay (your visa category), and — crucially — your resident registration number. That number is the Korean equivalent of a national ID number, and you will type it into countless forms, websites, and apps. Many online services in Korea simply will not let you register without one, so the ARC is the key that unlocks daily life.
Who has to register, and by when
In general, if you enter Korea on a long-term visa and plan to stay longer than 90 days, you are required to register and get an ARC. This covers most students, workers, marriage-visa holders, and long-term residents. Short-term and tourist entries do not register.
The deadline matters: you typically must complete registration within 90 days of your arrival in Korea. Do not leave it to the last week. Immigration appointment slots fill up fast in big cities, and missing the deadline can lead to a fine and complications with your status.
Why you need it so badly
Foreign residents quickly discover that the ARC is the gateway to nearly everything practical:
- Banking. A real, fully functional account usually requires your ARC. See how to open a bank account in Korea as a foreigner for the full picture.
- Phone. Postpaid mobile plans and many prepaid SIMs are tied to your registration number — read getting a SIM card in Korea.
- Health insurance. Enrollment in national health insurance as a resident is linked to your registration.
- Everyday admin. Signing a lease, getting deliveries, signing up for online services — the registration number is everywhere.
Documents to bring
The exact list depends on your status of stay, but the core documents are consistent. Expect to bring:
- Your passport (and your entry visa, if you have one in the passport).
- The completed application form (available at the office or downloadable from HiKorea).
- One passport-style color photo taken recently (check the size requirement; photo booths in Korea know the immigration standard).
- Proof of address in Korea — a lease/rental contract, a dormitory certificate, or a letter from your host or employer.
- The registration fee, typically paid in cash or by card at the office.
Depending on your category, you may also need extra papers:
- Students often need a certificate of enrollment or admission from their school.
- Workers may need an employment contract or a letter from the employer.
- Some statuses require a health check or tuberculosis (TB) screening result, particularly for certain teaching and labor categories.
Book your appointment on HiKorea
Do not just show up. Walk-in capacity at busy offices is very limited, and you may be turned away or wait for hours. Instead, book a reservation in advance through the official immigration portal, HiKorea (hikorea.go.kr). You create an account, choose your local immigration office, pick "foreign resident registration" as the service, and select an available time slot.
Choosing the right office
You generally register at the immigration office responsible for the district where you live. The portal will show you the offices and their open slots. In Seoul and other large cities, slots can disappear quickly, so book as soon as you have your address sorted — ideally weeks before your 90-day deadline.
At the appointment
On the day, arrive a little early, take a number if required, and hand over your documents when called. Staff will review your paperwork, take or verify your photo and fingerprints, and process the application. Many offices have at least some English-speaking support, and the 1345 contact center can interpret in several languages if you call them for help beforehand. The visit itself is usually quick once you are at the counter — the waiting is the long part, which is exactly why the reservation matters.
Fees and processing time
There is a registration fee, and it is modest. As of writing it sits in the range of roughly 30,000 won, but fees do change, so treat any number you read online as approximate and confirm the current amount on HiKorea before you go.
Your card is not printed on the spot. After your appointment, the ARC is produced and then either mailed to your address or made available for pickup, typically within about two to three weeks. The table below gives you a rough sense of the timeline.
| Step | Roughly when | Confirm where |
|---|---|---|
| Arrive in Korea | Day 0 | — |
| Book HiKorea slot | As early as possible | hikorea.go.kr |
| Register (deadline) | Within 90 days of arrival | HiKorea / 1345 |
| Receive ARC | ~2–3 weeks after appointment | Your local office |
What to do while you wait
You will not have the physical card for a couple of weeks, but you usually receive a confirmation or receipt at your appointment showing that your registration is in progress and what your registration number is. Keep that document safe — some banks and offices will accept it, or your passport, as interim proof while the card is printed. If a service insists on the physical card, it may simply have to wait until your ARC arrives.
Keep your address current
Registration is not a one-and-done event. If you move, you must report your new address — generally within 14 days of the move. You can often do this at your local district office (구청/주민센터) or through the Government24 service, and in some cases via immigration. Failing to report a change of address can lead to fines, so make it part of your moving checklist.
If you lose your card
Lost or damaged cards can be reissued. You apply for a reissue through HiKorea or at your immigration office, submit a fresh photo and the reissue fee, and wait for the replacement to be printed. Report a lost card promptly so it cannot be misused, and keep a photo of your card stored somewhere safe so you always have your number and details on hand.
The bottom line
Getting your ARC is one of the first big tasks of life in Korea, and it is very manageable if you plan ahead. Sort out your address, gather your documents, book a HiKorea slot well before your 90-day deadline, and bring copies of everything. Because fees, required documents, and processing times can shift, always confirm the current details on HiKorea (hikorea.go.kr) or by calling 1345. Once that card is in your wallet, the rest of your setup — banking, phone, insurance — falls into place quickly.