Document Legalization
Official document authentication for use in Thailand. We handle apostille certification, notarization, and embassy or consulate legalization for foreign documents.
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Consultation
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Free
Agency Fee
Additional cost of 200-400/doc (5-7 days or same day)
3k THB
Total
3k THB
Transparent pricing. No hidden fees. Launch promotions active.
Requirements
- Original document or certified copy (depending on document type)
- Legible document with no alterations or corrections
- For apostille: document must be issued in a Hague Convention member country
- For embassy legalization: document must first be notarized then legalized by the relevant ministry
- Translation into Thai or English if the document is in another language
Our Process
- 1
Identify what you need
Different visa types and purposes require different documents. Common items include birth certificates, marriage certificates, criminal background checks, and degree certificates.
- 2
Notarization (if required)
A notary public or authorized official certifies your document as a true and accurate copy.
- 3
Apostille or ministry authentication
For Hague Convention countries, an apostille confirms the document for international use. For others, the document is legalized through the relevant government ministry.
- 4
Embassy or consulate legalization
Some Thai processes require a final legalization stamp from the Thai embassy in the issuing country.
- 5
Certified translation
If your document is not in Thai or English, a certified translator provides an accepted translation.
Discovering that your foreign documents need official authentication, after you have already started your visa application, is one of the most common causes of delay in Thai immigration. The legalization process can take weeks if you are coordinating it yourself from abroad.
Common documents that require legalization include criminal background checks (for retirement and long-term visas), marriage and birth certificates (for family and dependent visas), university degrees (for work permits), and company registration documents (for business visas). The exact steps depend on the document type and the country that issued it.
Visa Siam coordinates the entire legalization chain on your behalf, whether that means an apostille from your home country or a multi-step embassy legalization process, so it does not become the bottleneck in your application.
Disclaimer
Visa rules, requirements, and government fees can change and it takes time to update our website.
Please refer to the official sources below or message us to confirm.