Australia
Usually no embassy legalisation. The requirement is a translation meeting the receiving authority's rules; translations produced in Australia must come from a NAATI-certified translator.
Source: https://immi.homeaffairs.gov.au/
Embassy legalisation of Thai documents: the certification chain
Short answer
Embassy legalisation is the step where the embassy or consulate of the destination country certifies the signature and seal of the Thai Department of Consular Affairs official who legalised the document beforehand. It authenticates the chain of signatures, not the truth of the content. The usual order is: original issued by the Thai authority, then a complete translation, then legalisation by the Department of Consular Affairs, then the destination country's embassy. Most documents filed with Australian authorities do not need embassy legalisation at all — what they require is a translation meeting that authority's published translation rules.
The four-stage certification chain
| Stage | Certified by | What is certified | What to prepare |
|---|---|---|---|
| 1. Original | Issuing Thai authority (district office, school, court, police) | The accuracy of the information in the record | A freshly issued copy within any age limit the destination sets, with all seals and signatures present. |
| 2. Translation | A translator the destination accepts (NAATI for Australia) | That the translation matches the original | Every seal, signature and marginal note translated — nothing omitted or summarised. |
| 3. Consular legalisation | Legalisation Division, Department of Consular Affairs | The signature and seal of the issuing official, or that the translation matches the original | Original plus translation plus identity documents as published by the department. |
| 4. Destination embassy | Embassy or consulate of the destination country in Thailand | The signature and seal of the Department of Consular Affairs official | The legalised document from stage 3, plus that mission's own form and appointment. |
Apostille Convention: what changes for Thailand
Thailand deposited its instrument of accession to the Apostille Convention on 30 June 2026, and the Convention enters into force for Thailand on 28 February 2027 according to the HCCH. Once in force, Thai public documents used in another contracting party can carry an Apostille instead of the double legalisation step at an embassy. Before that date the existing consular-plus-embassy chain still applies, and documents destined for non-contracting countries will continue to require embassy legalisation afterwards.
Source: https://www.hcch.net/en/instruments/conventions/status-table/
Notes by destination
China
Both Thailand and China are Apostille contracting parties as at the dates published in the HCCH status table; check the table and the mission's own notice for the practice applying on your filing date.
Source: https://www.hcch.net/en/instruments/conventions/status-table/
Japan and Korea
Practice differs by document type and by the receiving office. Confirm with the embassy in Bangkok whether consular legalisation alone is enough for your document.
Source: https://consular.mfa.go.th/
Gulf states and other non-contracting destinations
The full chain still applies: original, translation, consular legalisation, then the destination embassy, often with that mission's own translation language requirement.
Source: https://consular.mfa.go.th/
Common mistakes
- • Skipping a stage — taking a document to the embassy before consular legalisation. Most missions will refuse it.
- • Partial translation: a seal on the reverse or a note at the foot of the page left out will be rejected at the consular stage.
- • Name spelling that differs from the passport, so the destination treats it as a different person.
- • Using an old certified copy beyond the age limit; some countries accept only copies issued within the last 3–6 months.
- • Assuming embassy legalisation replaces a NAATI translation — Australian authorities set their translation requirement separately.
- • Not checking whether the destination wants English or its own official language, which forces a second translation.
Frequently asked questions
Do Thai documents filed with Australian authorities need Australian embassy legalisation?
Generally no. Australian authorities such as the Department of Home Affairs and the skills assessing bodies set requirements about translation: a document not in English must be accompanied by a translation meeting their published rules, and translations produced in Australia must come from a NAATI-certified translator. Read the requirement of the specific authority before arranging legalisation you may not need.
What is the difference between consular legalisation and embassy legalisation?
Consular legalisation is the Thai Department of Consular Affairs certifying the signature and seal of the Thai official who issued the document, or certifying that a translation matches its original. Embassy legalisation is the destination country certifying the signature and seal of that consular official, one layer further. Neither certifies that the statements in the document are true.
Thailand has joined the Apostille Convention — is embassy legalisation still needed?
Thailand deposited its instrument of accession on 30 June 2026 and the Convention enters into force for Thailand on 28 February 2027. Until that date the consular-plus-embassy chain applies as before. After it, an Apostille replaces embassy legalisation only for documents used in other contracting parties; non-contracting destinations keep the existing chain.
Can you arrange this if I am outside Thailand?
Translation is fully online. Stages that require the paper original — consular legalisation and embassy legalisation — need a representative present in Thailand, which can be arranged with written authorisation.
How much does it cost?
It depends on the number of documents, the language pair and which stages your destination actually requires. Send the scans and the authority's written requirement by LINE, phone or email and our staff will quote first. Government and embassy fees are those published by the relevant authority at the time of lodgement.
Official sources
Content reviewed August 2026. General information on document preparation, not legal or migration advice. Embassy procedures, forms and fees are those published by the relevant mission at the time of lodgement.