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Thai Notary Law & Service Phuket
THAI NOTARY LAW
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Apostille (in force 28 Feb 2027) & Hague Convention

Thailand's Hague Apostille Convention enters into force 28 Feb 2027 — which documents skip the embassy step.

21 answers in this topic — written by our licensed Thai attorneys, updated for 2026.

Apostille (in force 28 Feb 2027) & Hague ConventionFees & TurnaroundRequired DocumentsProcess & Queue BookingDestination Embassy & Non-HagueTranslation & Certified CopiesCorporate & Business Documents
Q1.Can an agent submit my documents on my behalf?

Yes. Your representative needs a Power of Attorney with a THB 10 duty stamp plus certified copies of both parties' ID or passport. If you sign abroad, the signature must be witnessed by a Thai embassy or consulate, or notarized locally and then apostilled before it is sent to Thailand.

Q2.Does Thailand's Apostille accession (in force 28 Feb 2027) replace embassy legalization?

For the 120+ Hague Convention member states, yes — one Apostille certificate from the Thai MFA is sufficient and the destination embassy step disappears. For non-member destinations the classic two-step route remains: MFA legalization followed by the destination embassy's own consular stamp in Bangkok.

Q3.How do I legalize foreign documents for use in Thailand?

Have the document notarized or certified in the issuing country, obtain an Apostille (or that country's MFA certification), add Thai embassy legalization if the country is not a Hague member, translate it into Thai, and finally have the Thai Department of Consular Affairs certify the Thai translation before you file it with any Thai authority.

Q4.How are Thai degrees and transcripts legalized for overseas study or work?

Obtain originals or registrar-certified copies with a live signature, translate them into English with names matching your passport, then submit for MFA translation certification. Hague destinations stop there with an Apostille; non-member destinations require an additional stamp from that country's embassy in Bangkok.

Q5.How many steps does a Power of Attorney for overseas use require?

Usually three: signature witnessed by a Thai Notarial Services Attorney, MFA legalization or Apostille, and — for non-Hague destinations — a final stamp at the destination embassy. US real-estate POAs should additionally use the destination state's own form and notarial certificate wording.

Q6.Which corporate documents do I need to open a subsidiary abroad?

The standard bundle is the company affidavit, shareholder list, memorandum of association, the board resolution approving the investment, a power of attorney for the signatory abroad, and the most recent financial statements. Each is translated into English, the translation is certified, and the set is legalized at the MFA. For non-Hague destinations, the destination embassy adds a final stamp.

Q7.Can Thai documents now be apostilled for use in China?

China joined the Hague Convention in November 2023, so once the Convention enters into force for Thailand on 28 February 2027 a single Apostille covers Thai public documents used in China, with no Chinese embassy stamp needed. During the transition some provincial Chinese authorities still ask for the legacy chain, so confirm with the receiving office before you file.

Q8.When does the Apostille Convention actually enter into force for Thailand?

Thailand has deposited its instrument of accession to the 1961 Hague Apostille Convention, and per the HCCH status table the Convention enters into force for Thailand on 28 February 2027. Throughout 2026 the legacy chain therefore still applies: certified translation and MFA legalization, followed by the destination embassy in Bangkok. Plan a single-Apostille route only for filings dated after that date.

Q9.Will documents legalized the old way still be valid after Apostille starts?

Yes. Consular stamps and embassy legalizations issued before entry into force are not retroactively invalidated. The practical limit is the receiving authority's freshness window — typically three to six months — so an older certificate may need to be re-issued for that reason, not because the system changed.

Q10.Does an Apostille cover every kind of document?

No. The Convention applies to public documents: civil registry records, court documents, administrative documents and notarial acts including officially certified signatures. Article 1 expressly excludes documents executed by diplomatic or consular agents and certain commercial or customs documents, which continue to require destination-embassy legalization.

Q11.Can the Thai MFA legalize a foreign passport?

Not the passport's contents directly. The workable route is to have a Thai lawyer holding a Notarial Services Attorney licence certify the copy of the passport page, then have that lawyer's signature legalized by the Department of Consular Affairs, and add the destination embassy stamp where the country is not covered by the Apostille route. This is standard for foreign bank openings, company formation and property files.

Q12.Which documents does a foreign residency or citizenship application usually need?

Immigration authorities most often ask for the birth certificate, house registration, ID card, marriage or divorce record, a police clearance certificate from the Royal Thai Police, and educational records. Each must be freshly issued, translated into English, certified by the MFA, and then either embassy-legalized or apostilled once the Convention is in force for Thailand.

Q13.How can a receiving authority verify a legalized document?

Every consular stamp carries a serial number and issue date that the Department of Consular Affairs can confirm on request. Once Apostille is operative for Thailand, member states will be able to check the certificate against the register the issuing authority maintains under Article 7 of the Convention. Keep a scan of the stamped page in every file.

Q14.Why might an embassy still demand legalization despite the Apostille Convention?

The Convention only operates between contracting states that have not objected to each other's accession. If a member state files an objection to Thailand's accession within the prescribed period, the Convention does not apply between those two states and the traditional embassy chain remains. Always check the HCCH status table country by country before planning a file.

Q15.Thailand joined the Apostille Convention — do I still need consular legalization?

It depends on the destination. If the receiving country is a Convention party that accepts Thai Apostilles, a single certificate replaces the embassy step. If the destination is not a party, or objected to Thailand's accession, you still follow the legacy chain: MFA legalization then that country's embassy in Bangkok. Always confirm with the receiving authority whether they want an Apostille or a legalization.

Q16.Does a police clearance certificate need legalization?

Usually yes, when it goes to a foreign immigration authority or professional board. The chain is: certificate from the Royal Thai Police Special Branch, translation, MFA legalization, and — for non-Apostille destinations — the relevant embassy. Watch the validity window, since many authorities accept only certificates issued within three to six months.

Q17.Does a Thai document need embassy attestation for use in the United States?

No. The US Embassy in Bangkok does not legalise Thai documents; it only provides notarial services for US citizens. Thai documents used in the US follow: English translation, then legalisation by the Thai MFA, and once Thailand's Apostille accession takes effect on 28 February 2027 a single Apostille will be sufficient.

Q18.How do Australian authorities want Thai documents certified?

Australia accepts NAATI-certified translations as standard. The practical chain is: registrar-certified Thai original, NAATI translation, then MFA legalisation (Apostille once in force). Most Australian departments do not require additional embassy attestation in Bangkok.

Q19.How do I bring a foreign document into Thailand?

Reverse the chain: notarisation plus Apostille or foreign-ministry legalisation in the issuing country, attestation by the Royal Thai Embassy or Consulate there, then Thai translation certified by the Department of Consular Affairs in Bangkok before any district office, court or Land Department will accept it.

Q20.What corporate documents does a Thai company legalize to open a subsidiary abroad?

The standard set is the company affidavit, shareholder list (BOJ.5), memorandum of association, VAT certificate (Phor Phor 20) and the board resolution approving the investment. Order the extracts freshly from DBD, translate them into the destination language, legalize the translation and the registrar's signature at the MFA Legalization Division, then add the destination embassy step or an Apostille where accepted. The common trap is document age: most recipients count validity from the DBD issue date, not the legalization date. Our team orders, translates and queues the whole set in one pass so nothing expires mid-process.

Q21.How many steps does a Thai corporate power of attorney need for overseas use?

Normally four: the authorised director signs with the company seal as shown on the affidavit; a Notarial Services Attorney certifies the signature and signing authority; the MFA legalizes the attorney's signature and the translation; the destination embassy legalizes next, or an Apostille is issued where the destination accepts it. Keep the scope specific — opening an account, signing a named contract, selling a named asset — because broadly worded powers are routinely rejected abroad.

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Official sources referenced

Government fees and processing times on this page were last verified in July 2026 by our Notarial Services Attorneys registered with the Lawyers Council of Thailand. Figures follow published agency schedules, may change without notice, and actual turnaround depends on each authority's queue. Please reconfirm with the issuing authority before you file.