What Is an Affidavit – And Why Expats in Thailand Need One
An affidavit is a sworn written statement made under oath. For expats in Thailand, affidavits are often required by Thai government offices, district offices (Amphur), embassies, and immigration authorities for:
- Marriage registration
- Visa applications (retirement, education, marriage, business)
- Legal proceedings or declarations
- Name changes or corrections
- Business registration and contracts
But here’s the problem: foreign affidavits are not automatically valid in Thailand. To be accepted, they must go through a 3-step legalization process:
- Embassy notarization
- Certified Thai translation
- Legalization by Thailand’s Ministry of Foreign Affairs (MFA)
Step 1: Get Your Affidavit Issued and Notarized by Your Embassy
Expats must first draft and sign their affidavit at their embassy in Bangkok. Examples include:
- Affidavit of Freedom to Marry
- Affidavit of Name Change
- Affidavit of Residence or Single Status
- Affidavit for Lost or Damaged Passport
Most embassies require the applicant to appear in person, present their passport, and sign the affidavit before a consular officer. The embassy will then notarize and stamp the document.
⚠️ Affidavits without embassy notarization will not be accepted by Thai authorities—even if they’re translated.
Step 2: Certified Thai Translation – Embassy & MFA Compliant
Once notarized, your affidavit must be translated into Thai by a licensed, certified translation provider.
Othello guarantees:
✅ 100% human translation by certified linguists
✅ Accurate legal terminology and formatting
✅ Embassy and MFA compliant structure
✅ Certificate of translation accuracy provided
✅ Free revisions if required by Thai authorities
We follow the TEP process (Translation–Editing–Proofreading), with every document reviewed by legal linguists to ensure precision and cultural accuracy.
Step 3: MFA Legalization – Make Your Affidavit Legally Valid in Thailand
With the certified Thai translation complete, the last step is legalization at the Ministry of Foreign Affairs (MFA).
The MFA will:
- Verify the embassy notarization
- Confirm the translator’s credentials
- Review the formatting and content
- Stamp and legalize the entire document set
This step is mandatory for any affidavit being submitted to:
- Thai marriage registration offices
- Immigration or visa departments
- Thai courts or legal offices
- Government registration offices
Why Expats Choose Othello for Affidavit Services
At Othello, we make affidavit translation and legalization stress-free and 100% online. We manage the entire process from the embassy stage to MFA finalization.
Here’s what sets us apart:
📱 Submit documents easily via the Othello App
⏱️ Fast processing — 1 business days
📜 Certified by Ministry of Justice translators
🔐 Full confidentiality and data protection (ISO certified)
💼 Accepted by all Thai government departments and courts
“We specialize in legal and embassy documents. Our affidavits are always accepted — because we do it right the first time.”
Certified Affidavit Translation and Legalization
An affidavit is a written statement confirmed by oath or affirmation, used as evidence in legal, immigration and civil matters. When a Thai affidavit is used abroad — or a foreign affidavit is used in Thailand — it usually needs certified translation and a legalization chain to be accepted. Othello International delivers both under one ISO 17100-aligned workflow.
Affidavits We Commonly Handle
- Affidavit of single status (freedom to marry)
- Affidavit of income or financial support
- Affidavit of identity or name variation
- Affidavit of support / sponsorship for visa applications
- Statutory declarations and sworn statements for court
Translation + Legalization in One Workflow
The path to acceptance is usually: certified translation, notarial attestation by a Notarial Services Attorney where required, legalization by the Ministry of Foreign Affairs, and — for use abroad — authentication by the destination embassy. Thailand is not a Hague Apostille country, so embassy legalization replaces the apostille. Handling all of these together keeps names, dates and sworn wording perfectly consistent across every stamp.
What We Need From You
- A clear scan or original of the affidavit
- The correct spelling of names as they appear in passports
- The destination country and the purpose of the document
- Any deadline you are working to
Frequently Asked Questions
Do you provide a certification of accuracy?
Yes. Every affidavit translation is issued with a signed certification of accuracy on Othello letterhead, which is what courts, embassies and the MFA require.
How fast can it be done?
A standard affidavit translation is typically ready within one to two working days; the legalization steps add a few days depending on the service level. We confirm the full timeline with your quote — usually within an hour of your enquiry.
Related services from Othello International
Othello International is a Bangkok-based bilingual (EN↔TH) technical translation and ESG advisory firm. Related specialist services:
- certified translation — MFA-ready, with legalization
- legal translation services — the full legal practice
