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NYC Legal & Notary Public attorney team, Bangkok — Wat Arun riverside

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Visa Extension for Korean (South Korea) — Complete Guide

🇰🇷 South KoreaDuration: ขึ้นกับวีซ่า yrsFrom THB 5,0001–7 business days

Korean clients seeking the Visa Extension (ขึ้นกับวีซ่า-year stay). NYC Legal delivers the full pipeline — Korean translation, Apostille, and filing at ตม. in 1–7 business days.

Question

What do Korean applicants need to prepare for the Visa Extension?

Answer

Core documents: South Korea passport, 6-month bank statements, police clearance, medical certificate, health insurance, plus category-specific evidence (มีวีซ่าเดิมที่ยังไม่หมดอายุ) — all translated into Thai/English with Apostille or embassy legalisation.

Filing Steps (4)

  1. Step 1 — Collect source documents from South Korea (3–10 business days)

    Korean applicants for the Visa Extension must prepare source documents such as birth certificate, marriage certificate, police clearance, employment letter, six-month bank statements, and academic transcripts. All must be issued by official South Korea authorities with an original seal.

  2. Step 2 — Certified translation Korean → Thai/English (2–4 business days)

    NYC Legal maintains an in-house Korean → Thai/English translation team in Bangkok. Every document carries the translator's certification, company seal, and case-file registry number. PDF proofs are shared before final printing to eliminate errors.

  3. Step 3 — Legalisation from South Korea: Apostille or embassy (5–20 business days)

    28 February 2027 If South Korea is already a Hague member, an Apostille from its Competent Authority is sufficient — saving weeks and thousands of baht. If not, documents must be legalised at the Royal Thai Embassy in South Korea before shipment to Thailand.

  4. Step 4 — File Visa Extension with the Thai authority (ตม.) (1–7 business days)

    Once translation and legalisation are complete, NYC Legal represents the applicant at ตม.. Korean clients may attend in person or issue a Power of Attorney so we can file without you needing to travel to Bangkok repeatedly.

Why Korean Clients Choose the Visa Extension

Korean nationals are among Thailand's top inbound investor cohorts. Their dominant investment pattern is Premium condos + K-restaurant franchises + cosmetics manufacturing. The Visa Extension matches that profile because it delivers ต่อได้โดยไม่ต้องออกประเทศ, ทีมเข้าร่วม ตม. แทน — with ขึ้นกับวีซ่า-year validity and government fees from THB 5,000.

Eligibility Criteria (Visa Extension)

• มีวีซ่าเดิมที่ยังไม่หมดอายุ • เอกสารตามประเภทวีซ่า For Korean applicants unsure whether they qualify, NYC Legal offers a free pre-check via LINE @NYCLegal — send preliminary documents (passport, statements, income proof) and our team assesses eligibility before you commit to the full engagement.

Benefits Once Visa Extension Is Granted

• ต่อได้โดยไม่ต้องออกประเทศ • ทีมเข้าร่วม ตม. แทน Korean holders of Visa Extension can also open Thai bank accounts more easily (Bangkok Bank, SCB, KBank accept applications immediately) and buy condominiums in personal name within the 49% foreign quota. Preferred residential hotspots: Bangkok (Sukhumvit Plus/Sathorn), Pattaya, Phuket, Chiang Mai (Nimman), Koh Samui.

Document Checklist for Korean Applicants

1) South Korea passport with ≥18 months validity + copies of all stamped pages 2) 4×6cm white-background photos ×4 (taken within 6 months) 3) Financial evidence: 6–12 months bank statements showing minimum balance USD 10,000+ (with Apostille/Legalisation) 4) Police clearance from South Korea authorities, ≤3 months old 5) Thai hospital medical certificate covering TB, Syphilis, Leprosy, Elephantiasis, Substance Abuse 6) Thai-valid health insurance ≥ USD 100,000/year (O-A visas need IPD ≥ THB 400,000 and OPD ≥ THB 40,000) 7) Employment/Company letters translated into English and legalised at the Royal Thai Embassy in South Korea 8) Visa Extension-specific: มีวีซ่าเดิมที่ยังไม่หมดอายุ

Currency Transfer & Banking Notes

KRW outbound limit USD 50k without filing; Shinhan / KB Kookmin branches in Bangkok ease compliance For Visa Extension filings, financial documents require a FET Form (Foreign Exchange Transaction) from the receiving Thai bank. NYC Legal liaises with Bangkok Bank, SCB, KBank, Krungthai, and HSBC Thailand to issue FET on the same day without the applicant traveling. Transfers >USD 50,000 also require a Source of Funds declaration under AMLO rules.

End-to-End Timeline

Thai-side processing at ตม. takes 1–7 business days. Including source-document translation and legalisation from South Korea, the total end-to-end timeline is 4–8 weeks. NYC Legal offers an Express Track that compresses this to 2–3 weeks for a 30–50% surcharge, using fast-lane filing at ตม..

Alternative Visas for Korean Nationals

Other options for Korean include: • LTR-Wealthy • Elite • Investment (B) However, the Visa Extension is best suited for long-term residents who want to avoid frequent renewals because ต่อได้โดยไม่ต้องออกประเทศ.

Apostille Transition (28 Feb 2027) for South Korea Documents

28 February 2027 From that date, Thailand accepts Apostille in place of traditional legalisation. For South Korea source documents entering Thailand for the Visa Extension: South Korea is already a Hague member, so an Apostille from South Korea authorities is immediately accepted in Thailand from 28 Feb 2027 — saving 5–15 business days and THB 1,000–3,000 per document in Thai-embassy fees.

NYC Legal Service for This Combination

• Free initial consultation — LINE @NYCLegal replies within 30 minutes (Mon–Sat 9am–8pm) • In-house Korean → Thai/English translators with credentials • Notarial attorney signatory licensed by the Thai Lawyers Council • Filing agent at ตม. so you need not travel • Status updates every 3 business days by email • Money-back guarantee for rejections caused by our documentation errors • Written fee schedule in advance — no hidden costs

Frequently Asked Questions

Can Korean applicants file the Visa Extension themselves?

Yes, self-filing is possible. Most Korean clients still engage professionals because (1) source-country documents require lengthy translation and legalisation, (2) ตม. operates primarily in Thai, and (3) missing documents force restarts that cost far more time than the service fee.

What is the total timeline?

Roughly 4–8 weeks: translation and legalisation from South Korea take 2–4 weeks, then Thai filing at ตม. takes 1–7 business days.

What is the total cost?

Government fees from THB 5,000 + NYC Legal service fee THB 15,000–35,000 depending on complexity + foreign-document legalisation THB 3,000–10,000 depending on volume.

What changes for South Korea documents after 28 Feb 2027?

If South Korea is a Hague member, its documents receive Apostille instead of full legalisation — saving 5–15 business days and THB 1,000–3,000 per document.

Can family members follow?

Yes. The Visa Extension typically grants Non-O Dependent status for spouse and children under 20, renewable together with the principal visa.

Can I work in Thailand on this visa?

Yes — with a Work Permit filed at the Ministry of Labour (some visas such as LTR and Smart Visa do not require a separate WP).

References