Why a Thai Birth Certificate requires legalisation for use in United States
- Granting power of attorney to a representative
- University admission or credential evaluation
- Real estate or inheritance transaction
- Employment / work permit
- Citizenship / permanent residency
Step-by-step legalisation chain for a Birth Certificate bound for United States
- 1. Request a fresh certified copy
Obtain the latest Birth Certificate from the issuing authority (amphur/district office) with original seal and officer signature.
- 2. Certified translation
Translate the Birth Certificate into the working language of United States using legal terminology that MFA Thailand will accept.
- 3. Notary Public certification
A Notary Public licensed by the Lawyers Council of Thailand certifies the translation as a true and faithful rendering of the original.
- 4. Authentication at MFA (Chaengwattana)
Lodge with the Department of Consular Affairs — Apostille is NOT accepted, full Legalisation required. Turnaround 3-5 วันทำการ.
- 5. United States Embassy lodgement
Bring MFA-stamped documents to the United States Embassy in Bangkok (advance booking required). Fee range ฿1,800-฿4,500.
Total cost estimate: translation + Notary + MFA + embassy fee — depends on page count (~1 pages average) and urgency.
Common pitfalls when lodging a Birth Certificate at the United States Embassy
- Translation uses everyday phrasing instead of legal/registry terminology.
- Original has folds or hand-written marks, leading to refusal.
- Fees changed without notice; always confirm before the lodgement day.
- Missing district/amphur certification before MFA submission.
- Issuing officer's signature has expired in the MFA verification database.
Practical tips — Birth Certificate → United States Embassy
- Book the embassy appointment in advance via the official portal.
- Allow at least 5–7 working days for MFA plus embassy stages.
- Always request a freshly-issued copy from the amphur (less than 3 months old).
- Verify Romanised spelling matches across every page before lodgement.
- Bring a clear passport copy signed 'true copy' by the holder.