Last updated: November 2026_
Your D-2 visa got you into Korea, but the date that matters once you’re here is the one on your Residence Card: the end of your period of stay. Degree programmes usually outlast it, so many international degree students need to extend it at least once. Korean immigration calls this an extension of stay (체류기간 연장허가); most students just call it a visa extension.
It’s usually routine. A few things can delay or complicate it: applying late, leaving Korea while the application is under review, low grades without an explanation, and unpaid health insurance premiums.
This guide is based on official guidance from Korea’s government portal and HiKorea, and on recent notices from Korean universities’ international offices. It covers when to apply, the three ways to do it, the documents, what grades and finances have to do with it, and what happens after you apply.
The short answer
- You can apply from four months before your stay expires. The deadline is the expiry date itself — or, online, one working day before it.
- There are three routes: through your university’s international office, online through HiKorea, or in person at your immigration office.
- The government fee is ₩60,000 in person, ₩50,000 online. If your university uses an agency for group applications, the total you pay can be higher — check your university’s notice.
- Core documents: application form, passport, Residence Card, proof of residence, plus a certificate of enrolment and transcript. Proof of funds is often required, though some universities’ students are exempt if they meet a grade threshold.
- Don’t leave Korea while your application is under review. Check with your international office before any trip.
- Settle any unpaid NHIS premiums first. Arrears may affect your application.
What an extension is — and isn’t
An extension keeps your D-2 status and moves the end date of your stay. It isn’t a new visa, and you can’t do it from abroad: it’s handled only inside Korea, by the immigration office with jurisdiction over your address. If you’re changing to a different status — for example D-2 to D-10 after graduation — that’s a different procedure.
When to apply
You can apply from four months before your period of stay expires, and you must apply by the expiry date. Online, the deadline is effectively one working day before expiry: HiKorea accepts online applications only on weekdays, from 07:00 to 22:00, not on weekends or public holidays. If your stay expires on a Monday, don’t count on applying online on Sunday.
A visit reservation is not an application. If you’re applying in person, booking a slot on HiKorea doesn’t count as applying — your application is received only when you visit and submit it. If your expiry date is close, make sure the visit itself happens in time.
Many universities collect extension applications in a set window each semester, often right after tuition is paid, and submit them together. That window is the deadline for using your university’s service, not your legal deadline. If you miss it, you can usually still apply yourself online or in person — but you’ll be doing it on your own, so don’t plan around missing it.
Applying late has consequences. Staying past your expiry date without a pending application is a violation of immigration law and can lead to fines, and a record of it can complicate later applications.
Three ways to apply
| Route | What you pay | Notes |
|---|---|---|
| Through your university | Check your university’s notice — agency fees may be added | The international office files on your behalf, sometimes through an agency. At Ewha, for example, the 2026 fall group application cost ₩75,000 in total and took about four to five weeks. |
| Online via HiKorea | ₩50,000 | Upload scanned documents; no visit needed for many applicants. |
| In person | ₩60,000 | Book a visit through HiKorea in advance, then visit to submit. |
Not every applicant can use the online route; some cases have to be handled in person.
Documents
Required for everyone:
- Application form (통합신청서, Form No. 34) — downloadable from HiKorea
- Passport
- Residence Card
- Proof of residence — a lease, dormitory confirmation, or similar
- Fee
Commonly required for D-2:
- Certificate of enrolment (재학증명서)
- Transcript (성적증명서)
- Proof of funds — typically a bank balance certificate in your own name from a Korean bank, or a scholarship certificate
- Proof of tuition payment for the coming semester, at some universities
Start with your international office’s checklist: it reflects what your university and its immigration office usually expect. But the final requirements are set by immigration. Documents can differ depending on your circumstances and on your university’s certification status for international students, and immigration can ask any applicant for more.
Get documents issued close to your application date. Balance certificates in particular often have to be recent.
Grades and proof of funds
Your transcript is how immigration checks you’re actually studying, and at some universities it also decides whether you need to prove your funds.
At Ewha, for example, regular-semester students whose previous-semester and cumulative GPA are both 2.0/4.3 or above are exempt from submitting proof of funds. Students in extra semesters and graduate students who have completed coursework (수료생) are not covered by the exemption (Ewha OISA).
Grades can also change what else you’re asked for:
- Students with low grades may be asked to submit a statement explaining their academic performance (학습부진사유서), and may be given a shorter extension.
- Students in extra semesters beyond the normal length of their programme are usually asked for a statement explaining why.
If your grades dropped for a reason — illness, a family emergency — explain it in writing and attach supporting documents.
Attendance matters too. Immigration expects D-2 students to attend their classes, and universities report students who stop attending. Some international offices check attendance before supporting an extension; ask yours whether it does.
Health insurance: clear it before you apply
Immigration checks National Health Insurance payment records when you apply to extend your stay, and unpaid premiums may affect your application. Check what you owe on NHIS’s website or app, pay it, and keep the receipt. NHIS Health Insurance for International Students explains how premiums and arrears work.
After you apply
- Check your application’s status. On HiKorea, you can follow it under My Page → e-application status.
- Respond to requests for more documents. Immigration may ask for supplementary documents by text or email, with a deadline. Missing it can delay or sink your application (Chosun University, 2026).
- Processing time: the government portal gives about 10 days for standard cases and up to two months if further review is needed. University group applications can take longer — four to five weeks in Ewha’s 2026 notice.
- Don’t leave Korea while it’s pending. Universities warn that leaving during review can cause problems with the application. If you must travel, ask your international office before you book.
- Once it’s approved, check the result on HiKorea and confirm the new end date. Ask your international office or immigration office how the new date will be recorded on your Residence Card — this can differ by route.
- If your address changed, report it within 15 days of moving (Getting Your ARC in Korea covers this).
Special cases
- Graduate students who have completed coursework (수료생): extending as a research student is usually possible, but universities often require registration as a research student and a supervisor’s confirmation. Ask your department and international office early.
- Finishing your degree: after graduation, D-2 extensions generally stop. You either leave Korea, change to another status such as the D-10 job-seeking visa, or apply for an extension for the purpose of departure (출국을 위한 기간연장). That’s a separate procedure for a stay of no more than 30 days, requires a flight ticket and has no fee — it isn’t a way to stay longer.
- Part-time work: an extension doesn’t renew your work permission automatically. Check the end date on your part-time work permit.
FAQ
My stay expires next week and I haven’t applied. Is it too late? Not yet. Apply online by one working day before expiry, or in person by the expiry date — remembering that a reservation isn’t an application. Tell your international office.
I missed my university’s group application window. What now? You can usually still apply yourself, online through HiKorea or in person, as long as you’re within your legal deadline (Kwangwoon University notice).
Can I apply before my tuition is paid? Some universities require proof of tuition payment, so their application window opens after the payment period. Follow your university’s schedule.
Will I get a full year? Extensions are often granted for a year or until the end of your programme, but immigration decides the length. Low grades, a short remaining study period and other factors can mean a shorter extension.
I’m an exchange student. Does this apply to me? Usually your stay is set to cover your exchange period. If your exchange is extended, talk to your international office about whether you need to apply.
Do I have to go to the immigration office? Often not — the university or online routes may cover you. But immigration can ask any applicant to visit or submit more documents.
Sources
- Government24 foreigner service, extension of stay for registered foreigners — routes, fees, online hours, processing times, departure extension
- Government24, extension of stay permit — required documents
- Ewha Womans University OISA, 2026 visa extension notice — group application fee and timing, proof-of-funds exemption
- Korea University Korean Language Center, visa and immigration — online deadline in working days
- Chosun University, 2026 visa extension guide — status checks and supplementary documents
- HiKorea — online applications and visit reservations
For the visa itself, start with The Korean Student Visa (D-2).
Rules and documents vary by university and change over time. Before you rely on anything here, check it with your international office or HiKorea. If something no longer matches what you’re told, tell me and I’ll update it.
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