Document Legalisation for Australians Moving to Thailand

Why Legalisation Is Required

Thai government agencies — Immigration, the Department of Employment, Land Departments, and courts — only accept foreign documents that have been officially authenticated. An Australian document (birth certificate, marriage certificate, police check, degree) presented in its original form without authentication will be rejected. Australia is a party to the Hague Apostille Convention. Thailand is not yet — it acceded on 30 June 2026, but the Convention does not enter into force for Thailand until 28 February 2027 (HCCH status table, checked 14 August 2026). Until that date an apostille is not the right instrument for a document going to Thailand, and an apostille alone will be refused.

The Dfat Authentication Process (Until 28 February 2027)

The Department of Foreign Affairs and Trade (DFAT) is the competent authority in Australia for issuing apostilles. Process: 1. Obtain the original document from the issuing authority (Births Deaths and Marriages registry, AFP for police checks, university for degrees, etc.). 2. Lodge with DFAT for an AUTHENTICATION, not an apostille — online via dfat.gov.au or in person at DFAT offices in Canberra, Sydney, Melbourne, Brisbane, Adelaide, or Perth. DFAT issues an apostille when the destination country is a Convention party and an authentication when it is not; because Thailand is not one until 28 February 2027, an authentication is what a Thailand-bound document needs. Tell DFAT the document is for use in Thailand so the correct certificate is issued. Processing time: typically 3–10 business days for online lodgement. Fee: AUD 105 per document (confirmed current as of August 2026, dfat.gov.au). 3. DFAT attaches the authentication certificate to the document.

Certified Thai Translation

After authentication, most Thai agencies require a certified Thai translation of the document. Translations must be by a qualified Thai translator (in Australia, this means a translator accredited by NAATI for Thai). Visa Centre works with NAATI-accredited Thai translators in Australia to provide this service.

Royal Thai Embassy Legalisation (Every Document, Until 28 February 2027)

Because Thailand is not yet a Convention party, the Thai Embassy in Canberra or a Royal Thai Consulate-General must legalise the DFAT-authenticated, translated document. Until 28 February 2027 this applies to every document, not only to court or land matters — it is the step that replaces the apostille, not an optional extra on top of one. Visa Centre sequences this for you and confirms the current requirement with the post before lodging.

From 28 February 2027, once the Convention is in force for Thailand, a DFAT apostille is expected to be accepted directly and this embassy step should fall away for most purposes. We will confirm the position with the Royal Thai Embassy at the time rather than assume the change applies cleanly from day one.

Common Documents Australians Legalise For Thailand

Australian Federal Police (AFP) check — required for Non-O-A retirement visa, Non-B business visa, and most Thai immigration applications. Birth certificate — required for marriage registration, name change applications, and children's applications. Marriage certificate — required for Non-O (marriage) visa, property transactions, and name changes. Degree and professional qualification certificates — required for work permit applications and certain BOI applications. Power of attorney documents — for property purchase or sale when the Australian party is not present in Thailand.

Timeline Planning

Allow 4–6 weeks minimum for the full document chain: AFP check processing (up to 15 business days), DFAT authentication (up to 10 business days), NAATI translation (3–5 business days), Thai Embassy certification if required (5–10 business days). Visa Centre manages the sequencing and tracks each document on your behalf.

General guidance only. Source: DFAT (dfat.gov.au); AFP (afp.gov.au); Royal Thai Embassy Canberra. Fees and processing times subject to change.