Apostille or Legalisation for Thailand From Australia

Thailand is between systems. On our last check of the HCCH status table, Thailand acceded to the Apostille Convention on 30 June 2026, with entry into force on 28 February 2027. Until then, Australian documents need DFAT authentication and Thai embassy legalisation, not an apostille. Check the table on the day, because that date decides your route.

Key takeaways

• Before 28 February 2027 (on our last check): ask DFAT for an authentication, then have the Royal Thai Embassy or Consulate-General legalise it. When we last checked, the embassy said plainly that it does not accept apostilles.
• From that date, a DFAT apostille should replace the legalisation chain for documents within the Convention's scope, unless an objection or a change on the table says otherwise.
• Getting an apostille too early is the mistake to avoid. An apostille issued now is not accepted by the Thai missions.
• Marrying in Thailand needs a Certificate of No Impediment issued by an Australian post in Thailand, not a notarised document from Australia.
• Expect Thai bodies to want a Thai translation, sometimes authenticated in Thailand.

Thailand and the Apostille Convention

The HCCH status table, as we read it, records Thailand's accession on 30 June 2026, with the Convention entering into force for Thailand on 28 February 2027. For an accession, existing parties have a period in which to object, and an objection stops the Convention applying between those two countries. So check two things on the day you start: that the entry into force date has not changed, and that no objection involving Australia is shown.

An apostille is a single certificate from the Department of Foreign Affairs and Trade (DFAT) confirming the signature and seal on an Australian public document; for Convention countries it replaces embassy legalisation. An authentication is DFAT's certificate for countries outside the Convention, which the destination's embassy then legalises. Only DFAT issues either in Australia; a notary cannot. See how the Hague Apostille Convention works.

Before the Convention applies: the legalisation chain

For a document to be used in Thailand before the Convention takes effect:

1. Notarise in Australia, if it is a private document such as a power of attorney, an affidavit or a copy of a degree.
2. DFAT authentication, not an apostille. Tell DFAT the document is for Thailand.
3. Legalisation at the Royal Thai Embassy in Canberra or the Royal Thai Consulate-General in Sydney.
4. Thai translation, and in some cases authentication of the translation in Thailand.

When we last checked, the Royal Thai Embassy's page said that documents issued by Australian government agencies must first be authenticated by DFAT, and that private documents must first be certified by a notary public and then authenticated by DFAT. It also said, in terms, that the embassy does not accept apostilles. The Consulate-General in Sydney likewise asked for DFAT authentication first. Ask the mission you will use which states it serves and how it wants documents lodged.

Registry certificates, court documents and national police checks usually go to DFAT directly, without a notary. DFAT's page on documents it can legalise lists what it accepts as originals. Degrees and transcripts need the university to verify them first, and a notarised copy must state that the original was verified with the institution. See document notarisation for the notary's part.

After the Convention applies

Once the Convention is in force between Australia and Thailand, the usual chain should become shorter: notarise a private document in Australia, obtain a DFAT apostille, and arrange the Thai translation the receiving body requires. No Thai embassy step should then be needed for documents within the Convention's scope.

Two questions are worth asking the Thai receiving body before committing money either way. If you need the document before the Convention applies, use the legalisation chain. An apostille issued now is not accepted by the Thai missions, and we have not found official guidance saying Thai authorities will treat it as valid later. If you legalise now and use the document after the change, ask whether a document legalised under the old chain will still be accepted. We have not found a Thai statement on this either, so do not assume. Receiving offices, not the Convention, decide what they will take, and practice often lags the treaty date.

Marrying in Thailand: no Australian notary needed

This is where many Australians spend money they did not need to. Thai district offices (amphur) ask a foreign national for proof of freedom to marry. When we last checked, the Australian Embassy in Bangkok's instructions said that Thai authorities only accept a Certificate of No Impediment to Marriage issued by an Australian post in Thailand, and only for Australians who entered Thailand on their Australian passport. It also said Thai authorities will not accept just a single status certificate from an Australian births, deaths and marriages registry.

The certificate has a short life: Thai authorities accept it only for a limited period after issue, so check the current period with the embassy and book the amphur accordingly. After issue, the embassy's instructions showed the certificate being translated into Thai by a private translation agency, authenticated by the Thai Ministry of Foreign Affairs' Department of Consular Affairs, and taken to an amphur to register the marriage.

If either of you has been married before, take the original divorce order or former spouse's death certificate to the embassy appointment. None of this requires a notary in Australia. What it does require is the original documents in Thailand, so bring them rather than copies.

Already in Thailand?

When we last checked, the Australian Embassy in Bangkok could authenticate or apostille original Australian public documents, such as registry certificates, while you are in Thailand. Its notarial services were limited, though: it said it provides them only for documents that are Australian in origin or intended for use in Australia, and listed things it will not do, including Thai visa matters and Thai bank account verification. A private document to be signed for use in Thailand is not something to bring to the embassy. See what Australian embassies can do.

Translation

Expect Thai receiving bodies to want a Thai translation. For civil registration, the embassy's marriage instructions showed the translation itself being authenticated by the Department of Consular Affairs in Thailand. Ask the receiving body whether it will accept a translation made in Australia or needs one made in Thailand; whether the translation must be authenticated by the Department of Consular Affairs; and whether the notarial certificate and the DFAT certificate must be translated too. Our document translation page covers the Australian side.

Documents commonly needed for Thailand

Document	Typical use in Thailand	Australian route before 28 Feb 2027
Power of attorney	Land office, bank, company matters	Notary, DFAT authentication, Thai embassy or consulate
Degree or transcript	Work permit, teaching licence	University verification, DFAT authentication, Thai mission
National police check	Work permit, visa	Original to DFAT, then Thai mission
Birth certificate	Child's registration, visa	Registry original to DFAT, then Thai mission
Certificate of No Impediment	Marriage at an amphur	Issued in Thailand by an Australian post

Powers of attorney for Thai property and companies

Australians most often sign a power of attorney for Thailand to let a relative or lawyer deal with a land office, a bank or a Thai company. Thai bodies frequently have their own forms and may want the attorney's details, the property's title details and the exact acts authorised set out in a particular way. Ask the Thai lawyer or the office for the form before anyone drafts anything. You sign it before an Australian notary, who checks your identity, satisfies themselves that you understand the document and are signing freely, and attaches a notarial certificate. If the form is in Thai and you do not read Thai, ask for a bilingual version and tell the notary in advance. Take advice in Thailand on validity, and see an Australian solicitor if Australian assets are involved. Our power of attorney and declarations page explains the witnessing side.

Common mistakes with Thai paperwork

• Asking DFAT for an apostille before the Convention applies. The Thai missions said they do not accept one.
• Legalising a single status certificate to marry in Thailand. Thai district offices wanted the Certificate of No Impediment issued in Thailand instead.
• Using a JP. A JP certification cannot be authenticated by DFAT for use overseas.
• Laminated or ceremonial certificates. DFAT refuses both; order a standard registry certificate.
• A name that differs between your Australian and Thai records. See name mismatches and apostilles.

Coming the other way

A Thai document for use in Australia is authenticated in Thailand, and an Australian notary cannot vouch for what a Thai authority issued. For an Australian visa, Home Affairs usually wants a certified copy rather than any legalisation, with a translation of Thai documents: made in Australia by a NAATI-credentialled translator, or made overseas with the translator's full name, address, telephone number and qualifications. See documents from overseas for use in Australia.

Here is an illustration, not a real case

A Perth teacher is offered a job in Chiang Mai starting in November 2026. The school asks for her degree and a police check, legalised. Because that is before the Convention applies, she has the university verify her degree, sends it and a national police check to DFAT for authentication rather than an apostille, and has both legalised at a Thai mission. A colleague starting in April 2027 asks the school whether an apostille will then do; the school says it will confirm closer to the date.

In short

Until 28 February 2027, on our last check, Thailand needs DFAT authentication and Thai embassy legalisation, and the Thai missions do not accept apostilles. After that, a DFAT apostille should replace the embassy step. Check the HCCH table and the receiving body before choosing. More on the Australian steps is at apostille and authentication.

People also search for

• What is DFAT authentication?
• What do consulates in Australia legalise?
• What if I got the wrong certificate type?
• How do I apostille documents for the Philippines?
• What if the embassy rejects my document?

Sending documents to Thailand? Send us what the Thai office or employer asked for, and we will explain each step before you book.