NYCVisa · Notarial Services Attorney
Affidavit of Support (I-134 / I-864) Certification in Thailand
An affidavit of support is a sworn statement the sponsor signs before a notary, confirming facts such as the relationship and intent to cover costs. Unlike a plain letter, a false statement carries legal consequences. Some countries require their own form; the US uses Form I-864, which cannot be replaced by a self-drafted affidavit.
Certification scope and key checks
Check first whether the embassy wants an official form or a self-drafted affidavit.
Content must be facts the declarant personally knows, not guesses.
Sign only in front of the notary; pre-signed affidavits are not accepted.
Documents to prepare
- Declarant's ID/passport
- Relationship and financial evidence
- Embassy form, if any
Procedure for this document
- Check the accepted format
- Draft the affidavit
- Swear and sign before a notary
- Translate and legalise if required
Overseas use: confirm the recipient’s route
Notarization is not required for every public record, and some uses need no onward legalisation. Confirm whether the recipient needs an original, copy, translation or specific certification before arranging MFA and embassy steps where applicable.
Thailand deposited its accession on 30 June 2026. The Apostille Convention is scheduled to enter into force for Thailand on 28 February 2027. Do not assume Thai Apostilles are available before then. Even after entry into force, document scope and treaty relations with the destination must be checked.
Questions before booking
- Can it replace US Form I-864?
- No; the official form is required.
- Can someone swear on another's behalf?
- No; the declarant confirms facts personally.
- What if the statement is false?
- False swearing can be a criminal offence.
- Are MFA and embassy legalisation always needed?
- No. Ask the recipient to confirm the certification, language and onward steps. Notarization, translation and legalisation are distinct; do not perform every step automatically.
- How are fees and timing assessed?
- After reviewing the form, copies, signers, language and onward steps, we provide a quote and indicative schedule before work. Authority queues and outcomes are not guaranteed.
- What should I send before booking?
- Send the record type, destination country, receiving authority and its checklist through a direct contact channel. Redact personal information unnecessary for the initial enquiry.
📚 Official sources and current requirements
Content reviewed 8 October 2026. General information, not case-specific legal advice. Confirm current requirements with the recipient before filing; document acceptance and application outcomes are not guaranteed.
Send the recipient’s checklist before booking
Initial enquiry for scoping and a quote is free; case-specific legal advice is not included.