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If you're planning to study Korean at a university-affiliated language institute before pursuing a degree, you'll eventually run into the same "code" terminology that applies to D2 — and it's worth understanding early, since D4-1's rules for this are actually narrower than D2's. This page explains what D4-1 code means, the official government certification system behind it, and exactly who qualifies.
D4-1 is Korea's official visa code for Korean Language Training — issued to students enrolled at a language institute affiliated with a university eligible to offer D2 Study visas. It's a separate, standalone code within Korea's General Training (D-4) visa category, distinct from D4-7 (Foreign Language Training) and from the D2 Study visa used for degree programs.
A D4-1 visa is issued as a single-entry visa valid for a stay of up to six months at a time, renewed as your language program continues — shorter than a D2 visa, which can run up to two years.
Just as with D2, "code" refers to 사증발급번호 — the Confirmation of Visa Issuance (CVI). Under the standard route, you apply directly at the Korean Embassy in Nepal with your full document set. Under the CVI route, your visa is pre-approved through the Immigration Office in Korea with jurisdiction over your language institute's location, and your embassy visit in Nepal becomes limited to submitting your passport and CVI confirmation number.
Important difference from D2: unlike D2, there is no E-Visa option for D4-1 under any university tier for Nepali applicants. For D4-1, your only two routes are the standard embassy application, or CVI — and CVI is only available at one specific tier of institution.
Access to D4-1 CVI is governed by the same official accreditation system that governs D2 Code: the International Education Quality Assurance System (IEQAS), known in Korean as 교육국제화역량 인증제, jointly run every year by Korea's Ministry of Education and Ministry of Justice.
What's specifically relevant for D4-1: IEQAS doesn't only certify degree-granting universities — it separately evaluates and certifies language institutes as their own category. In the most recent published evaluation, the Ministry of Education certified 123 language institutes for foreign learners alongside 181 degree-granting universities. This matters directly for you, because your language institute's certification status — not just its parent university's reputation — is what determines whether CVI is available to you.
Per Korea's official Visa Services Manual, CVI eligibility for D4-1 is narrower than for D2:
This means D4-1's CVI route is reserved specifically for the top tier — Excellent Certified institutions only. Certified-but-not-Excellent institutes, which do offer some CVI/E-Visa access for D2 students at Master's or Doctoral level, offer no equivalent shortcut for D4-1 language students.
There are also specific nationality-based cases where CVI is mandatory rather than optional — including students from Cuba, Syria, Macedonia, and Kosovo, and language trainees from Mongolia, Vietnam, Uzbekistan, and China enrolling at ordinary or lower-tier institutions. These categories don't apply to Nepali applicants, but they're part of why the rules can look inconsistent if you're comparing notes with students from other countries — the actual rule depends on both nationality and institution tier together.
Per Korea's official Study in Korea government portal, IEQAS-certified institutions offer benefits beyond the CVI pathway itself:
Institutions that fail IEQAS standards are officially designated as requiring "visa screening enhancement" — meaning stricter scrutiny of your language proficiency documentation, financial capability, and supporting documents. This is the government's own classification.
IEQAS certification is valid for four years but reviewed annually, and the list of certified institutions changes each year. We check a language institute's current certification status directly against Korea's official Study in Korea government portal before advising any student, rather than relying on the institute's own marketing.
Per Korea's Visa Services Manual, D4-1 applicants must also meet requirements that don't apply to D2 applicants:
These aren't just bureaucratic details — they're part of what IEQAS certification is actually evaluating, so a certified institute has already been vetted against these exact standards by the Korean government.
It refers to 사증발급번호 — the Confirmation of Visa Issuance (CVI), an alternative to direct embassy application, available for D4-1 language-training visas only at Excellent Certified institutions.
No — it's narrower. D2 CVI is available at Excellent Certified universities across all subcategories. D4-1 CVI is only available at the Excellent Certified tier specifically; Certified-but-not-Excellent institutes don't offer it for D4-1, even though they may offer some benefits for D2 students.
No. Unlike D2, there is no E-Visa pathway for D4-1 for Nepali applicants under any institution tier. Your only options are the standard embassy route or CVI at an Excellent Certified institute.
D4-1 requires proof of financial capability for approximately six months of tuition and living expenses, compared to roughly one year for D2 applicants — reflecting the shorter initial visa period.
Certification is reviewed annually and valid for four years at a time, so it's worth confirming current status before you commit, since a favorable classification isn't guaranteed to remain unchanged indefinitely.
Korea's official Study in Korea government portal publishes current IEQAS certification lists, including language institutes specifically. We verify this with you directly during counselling.
Bring your admission details and come talk to us at our Hetauda office — we'll check your target language institute's current IEQAS status and walk you through whether the standard route or D4-1 code (CVI) applies to your case. Prefer to start from your phone? WhatsApp us at +977 9769741767 and we'll help you get started.
Visa classifications, institute certification, and financial requirements are based on official Korean government guidance and are subject to annual change. We confirm current requirements with you directly during your consultation.
