Can I work on a D-4 visa?

Limited work is allowed with immigration permission. You may apply for a part-time work permit (시간제 취업 허가) after completing 6 months on the D-4-1 visa. The permit allows up to 20 hours per week and is granted in 6-month increments. Extensions are refused if your grade average is below C or overall attendance drops below 70%.

What TOPIK level do I need to change from D-4 to D-2?

Requirements vary by university. Most Korean universities require at least TOPIK Level 3–4 for admission to Korean-language programs, and Level 5–6 for graduate programs.

How long can I stay on a D-4 visa total?

The maximum cumulative stay for language study (D-4-1) is 2 years. After that, you must leave and re-enter or change to a different visa status.

What changed for D-4-6 (private education) in 2025?

As of October 2025, KIS significantly tightened D-4-6 requirements. Key changes: (1) Sponsoring institutions (초청기관) must meet stricter accreditation and operational standards; (2) Educational subcontracting (교육 위탁) is now prohibited — the school must directly deliver the program; (3) KIS conducts regular on-site inspections of D-4-6 sponsor schools; (4) Invitation restrictions (초청제한) are more strictly enforced. If you are studying at a private institution in Korea, confirm it is currently approved as a D-4-6 sponsor before applying.

What is D-4-2K (Corporate Customized Internship)?

D-4-2K is a corporate-customized internship sub-type under D-4, introduced in October 2025. It allows Korean companies to invite foreign interns for structured training and internship programs that are jointly designed with Korean universities or vocational institutions. Unlike D-4-2 (corporate graduate trainee), D-4-2K is specifically for internships with a formal employer-university curriculum agreement. The employer must hold KIS registration as a D-4-2K inviting company, and the intern's program must include both academic study and on-site work training. ARC issuance applies for stays over 90 days. Eligible interns can apply for a D-10 job seeker visa after completing the program if they meet D-10 requirements.

What changed for D-4-3 (secondary school foreign students) in 2025?

As of October 2025, D-4-3 (secondary school foreign student) now requires government or local government sponsorship for most new applications — direct private school invitations are no longer sufficient for initial visa issuance in many cases. Korean public secondary schools (국·공립학교) and approved private secondary schools with government-backed international student programmes are the primary sponsors. The ARC issuance process was also updated to require enrollment certificate confirmation from the school and local education office. If you or your child is applying for secondary school study in Korea, confirm the school is currently registered as an approved D-4-3 sponsor.

Korea D-4 Visa — Eligibility & How to Apply

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Overview

The D-4 visa covers training and language study programs that are not full degree programs. Sub-codes include: D-4-1 (Korean language study at university language institutes), D-4-7 (foreign language study), D-4-2 (corporate graduate trainee), D-4-3 (K-12 foreign student), D-4-5 (Korean culinary training), and D-4-6 (accredited private education institutions). The most common is D-4-1 — the standard route for foreigners who want to study Korean before entering a degree program or working. Important: As of October 2025, D-4-6 (private education) requirements were significantly tightened — sponsoring institutions must meet stricter standards, educational subcontracting is prohibited, and KIS conducts regular on-site inspections.

D-4 visa Korea: language study, training, and D-4-7 differences

The D-4 visa is for non-degree study or training, not a normal work visa. Most applicants use D-4-1 for Korean language programs at eligible institutions, while D-4-7 is a narrower foreign-language training route. The deciding facts are the institution, program type, funding proof, attendance plan, and whether a later move to D-2 or another status is realistic.

Confirm the exact D-4 subtype

D-4-1 language study, D-4-6 private-education training, D-4-7 foreign-language training, and corporate training routes are reviewed differently. A generic school acceptance letter is not enough if the institution is not eligible for that subtype.

Treat attendance and funding as extension issues

D-4 cases can be approved at entry but fail later if attendance, tuition, living-cost proof, or school-status records become weak before extension.

Do not use D-4 as a work shortcut

Part-time or outside activity rules are separate from the visa itself. If the real purpose is employment, compare E-7, D-10, or another work route before filing.

Who is the D-4 visa for?

Foreign nationals enrolled in Korean language programs at accredited university language institutes (어학원), or in vocational/corporate training programs. Commonly used by those planning to apply for D-2 university admission or who want to learn Korean before working.

Eligibility requirements

Enrolled in a language institute attached to an accredited university (D-4-1) — general private academies (학원) are NOT eligible for D-4-1; D-4-6 covers accredited private education but has stricter requirements since October 2025
High school diploma or equivalent (minimum 12 years of education) required for D-4-1; D-4-7 foreign language track allows high school students
Proof of financial sufficiency covering tuition + living expenses for the full study period
Education credentials verified via apostille or consular authentication

Delay and refusal risks

What can go wrong with D-4?

Student-status delays usually come from school eligibility, finances, admissions records, or study/work compliance.

Admission and school records are incomplete

The admission certificate, school status, and program details need to support the exact study route.

Manual basis: Study-status manuals rely on school-issued admission and program documents.

Financial proof does not match the filing route

Weak balance records, unclear sponsor support, or missing scholarship/tuition proof can create delay.

Manual basis: Study-status manuals include financial ability and tuition/stay-expense evidence.

Prior violations or unresolved compliance issues

Prior overstays, fines, unauthorized work, tax delinquency, or criminal history can trigger closer review even when the basic visa category looks correct.

Manual basis: The stay manuals repeatedly reference status restrictions, law-violation review, criminal-record checks, tax/payment issues, and status-change limits.

Required documents

1.
Valid passport + visa application form + passport photo
2.
Standard admission certificate issued by university president/dean (표준입학허가서)
3.
Final academic records — apostille or Korean consular authentication required
4.
Financial proof: bank balance statement (issued within 30 days) or scholarship certificate, covering tuition + living expenses for study period
5.
Family relationship certificate (if submitting parents' bank statement)
6.
Training plan including class schedule, instructor roster, and facility details

How to apply — step by step

1
Enroll in a Korean language program
Apply to a university language institute (e.g., Yonsei Korean Language Institute, Seoul National University Language Education Institute) or an accredited vocational school.
2
Apply for D-4 visa
Submit your application at the Korean consulate with your enrollment certificate and supporting documents.
3
Arrive and register
Register at immigration within 90 days of arrival. Maintain attendance above 70% — immigration monitors this and extensions are denied if you fall below threshold.
4
Extend or change status
You may extend the D-4 for additional semesters or change to D-2 once accepted into a degree program.