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What changed: Thailand completed its accession to the Apostille Convention on June 30, 2026; it will take effect for the country on February 28, 2027. The competent authority is the Department of Consular Affairs of the Ministry of Foreign Affairs of Thailand. Current legalization costs 200 baht per stamp for regular service and 400 baht for expedited service; documents are returned within 2 working days after receipt of the complete set, or on the day of submission, respectively.
The apostille in Thailand will begin to apply after the convention takes effect for the country — February 28, 2027. Accession has already been completed: Thailand deposited the relevant instrument on June 30, 2026. But in September 2026, a foreign apostille cannot be considered a standalone replacement for current consular legalization.
This applies to foreigners who are preparing documents for family, education, visa, and business procedures. A marriage certificate, diploma, or power of attorney may require different certification methods: the route depends on the issuing country, the type of document, and the receiving organization. General materials on visas and legalization in Thailand can help you sort out your situation.
Current as of September 2026. Practical conditions may change; check them against official sources. Below are the differences between the current and future procedures, the sequence for preparing documents, published fees, and questions worth resolving before paying for certification.
Apostille in Thailand: what has changed and when the new procedure begins
Thailand has acceded to the Convention of October 5, 1961, abolishing the requirement for legalization of foreign public documents. The instrument of accession was deposited June 30, 2026, and the convention’s entry into force for the country is scheduled for February 28, 2027. Status information has been published in the official status table of the Hague Conference (HCCH).
The competent authority has already been designated — the Department of Consular Affairs of the Ministry of Foreign Affairs of Thailand. However, designating an agency and starting to issue apostilles are different events. The authority is known in advance, but the new procedure is not yet in effect.
| What we compare | Now | After entry into force |
|---|---|---|
| Method of certification | Applicable route of current legalization | Apostille in cases covered by the convention |
| Consular stages | Completed where required | Replaced by an apostille when the convention’s conditions are met |
| Translation and document set | Determined by the recipient’s requirements | Remain separate requirements of the recipient |
| Cost and service | Published fees for current legalization exist | Previous fees and filing rules cannot be transferred to the apostille |
Put simply, accession has already taken place, but the future procedure cannot yet be used as if it were in effect. Nor can the cost of an apostille, its issuance timeline, or the availability of a specific filing channel be inferred from the designation of the authority.
What an apostille certifies and which documents the convention covers
An apostille is the method provided by the convention for certifying an official document for use in another country. Its purpose is to confirm the origin of the document, the signature, and the seal. An apostille does not certify the content of the document: certifying a diploma does not in itself mean that the qualification is recognized.
The convention covers administrative documents and notarial acts. Common examples include:
- birth certificates;
- marriage and death certificates;
- notarial certification of signatures;
- diplomas and other educational documents.
A power of attorney drawn up as a notarial act may also be considered for application of the convention. But the document’s title alone does not settle the question: its form, the country of issue, and the conditions under which the convention applies between the relevant countries all matter.
There are certain exceptions. The convention does not apply to documents of diplomatic and consular agents, nor to administrative documents directly related to commercial or customs operations.
This is not a ban on all business papers. A corporate document or notarial act cannot be automatically excluded merely because it is connected with commercial activity. For an invoice, transport, or customs document, you need to determine its legal category and the applicable method of certification, rather than applying a general rule to all business papers.
Even a suitable document with an apostille must meet the other conditions of the specific procedure. The recipient separately assesses whether the right document has been submitted, whether its form is acceptable, and whether the translation requirements have been met.
How to prepare foreign documents for Thailand before the launch
Before the convention takes effect, start with the requirements of the Thai recipient. Having an apostille from the issuing country does not yet mean that the document is prepared for use in Thailand. There is no universal chain for every document here.
The practical sequence looks like this:
- Determine the country of issue and the purpose of the document. Note where you will submit it and for which procedure.
- Obtain the form requirements. Find out whether an original, a copy, or a notarized document is required.
- Prepare a translation, if one is required. Agree on the language and method of certification before ordering the service.
- Complete the applicable legalization stages. These may include notarization, certification by the authorities of the issuing country, and the Thai mission.
- Check the document set before submission. Compare the certifications and translation you have obtained with the requirements of the receiving organization.
Birth and marriage certificates, a diploma, a police clearance certificate, and a power of attorney may be needed for different purposes. These are examples, not a mandatory set for every foreigner. If you are preparing documents for a family visa, start with the requirements of the relevant family scenario.
Separately, about documents from Russia
For a Russian document, the route is also chosen according to its type and purpose. Notarial, departmental, and consular stages may be part of the process, but the shortened scheme cannot be considered a comprehensive guide for all Russian documents.
Do not apply the Russian sequence to documents from Kazakhstan or Ukraine. Each country has its own competent authorities and certification procedure, and the requirements of the Thai recipient remain a separate part of preparation.
How to legalize Thai documents for use abroad
It is easy to mix up the directions here. A document issued in Thailand for another country is handled differently from a foreign paper for a Thai organization. Until February 28, 2027, Thailand does not issue apostilles.
For a Thai document, the existing route remains:
- Determine the requirements of the organization in the destination country.
- Prepare the document and the necessary certifications from the issuing authority, or notarization.
- Complete legalization at the Department of Consular Affairs.
- Apply to the mission of the destination country, if this stage is required.
Applying to the embassy or consulate of the destination country cannot be described as mandatory in every case. The route must be matched to the specific document and the requirements of its recipient.
What is provided for postal legalization
The published instructions of the Department of Consular Affairs provide for the following elements of the set:
- originals of documents with copies;
- a copy of the passport of the foreign holder of the document;
- certification of the accuracy of the translation by the translator, if a translation is submitted.
These are the requirements specifically for postal legalization. They cannot be automatically transferred to in-person submission, a future apostille, or the document set of every foreign organization.
Translation is considered separately from legalization. First determine the required language and method of certification according to the recipient’s rules. Certification of a translation by the translator in the postal instructions does not mean a universal requirement to notarize every translation.
Where to apply and how much current legalization costs
Current legalization is handled by the Department of Consular Affairs of the Ministry of Foreign Affairs of Thailand. Published fees and timelines are listed on the Thai government portal. Below are the conditions based on data as of September 2026.
| Service | Fee | Document return |
|---|---|---|
| Regular legalization | 200 baht per certifying stamp | Within 2 working days after receipt of the application and the complete set of documents |
| Expedited legalization | 400 baht per certifying stamp | On the day of submission |
These are legalization fees, not fees for the future apostille. The timeline applies to the relevant service: it does not automatically include translation preparation, preceding certifications, or the subsequent embassy stage. If there are several documents or certifications, the published price per stamp cannot be considered the cost of the entire procedure.
Consular fee in Moscow
The Thai Embassy in Moscow publishes a separate fee: 15 US dollars in cash per stamp. Under its terms, documents are ready after three working days.
This is the fee of the Moscow embassy specifically. It does not replace the fee of the Department of Consular Affairs and does not describe the applicant’s expenses for the other stages of processing.
Appointments and working days
The Department asks applicants to book legalization appointments online in advance. The official booking portal (qlegal.consular.go.th) is used for this; this applies to the current service.
The Department’s general working days are Monday–Friday, except public holidays. This schedule does not guarantee that a specific service will be available on any given working day: before applying, check the current fee and appointment availability.
What will change for expats, families, and businesses
After the convention takes effect, an apostille will be able to replace consular legalization in applicable cases. This is a reduction in certification stages, not a promise of a positive decision on a visa, transaction, or registration. The set of documents still depends on the specific procedure.
- Visas and work. You may need a diploma, a police clearance certificate, or another document from the issuing country. If your task is processing a work visa, keep the certification of documents separate from the conditions of the visa and work permit.
- Marriage and children. Birth, marriage, and divorce certificates, or documents on marital status, may be used in family procedures. The recipient determines the required set, and some consular documents are excluded from the scope of the convention.
- Education. Apostillization of documents may simplify the certification of a diploma. It does not replace an assessment of education or qualifications and does not promise automatic recognition.
- Real estate. A power of attorney and documents on marital status may be required. If you plan buying real estate in Thailand, agree on the form of these papers before they are prepared.
- Company and representative office. If your task is registering a company in Thailand, you may need corporate documents and powers of attorney. Their connection to business alone does not rule out application of the convention.
It is not advisable to plan a fixed saving of time or money in advance. Reducing consular stages does not cancel the preparation of the document, its translation, or the check of the set. For a power of attorney, the question also remains whether its content and form suit the authorized action.
Which countries participate and what to check before the switch
The official table of the Hague Conference on Private International Law contains 130 contracting parties of the convention. Russia is listed among them. But a country’s presence in the table does not mean unconditional application of the apostille between every pair of states.
For Thailand’s relations with another party, the absence of that party’s objection to accession matters. Therefore, for documents from Russia, Kazakhstan, or Ukraine, you need to check the applicability of the convention specifically between the issuing country and Thailand. For Thai documents, the relevant destination country is checked.
Before paying for processing, ask the recipient specific questions:
- Is an original required, or is a certified copy acceptable?
- In what language must the document or translation be?
- Who must certify the translation?
- Are there requirements on the document’s recency?
- Is submission through a representative allowed?
- Which method of certification applies on the date of submission?
The answers will help you choose the route without unnecessary certifications. It is especially useful to settle these questions if preparation starts before the new procedure takes effect and submission is planned after it.
Do not rush to replace stamps on previously legalized documents. The convention taking effect does not by itself create an automatic obligation to redo every document. At the same time, indefinite acceptance of an old set cannot be promised either: its suitability is determined by the recipient’s requirements.
Frequently Asked Questions ❓
What is an apostille and how does it differ from consular legalization?
An apostille is the method provided by the convention for certifying official documents for international use. It does not certify the content of the document. When the convention applies between the relevant countries and covers the document, the apostille replaces consular legalization; for Thailand, the new procedure has not yet taken effect.
When will the apostille start working in Thailand?
Thailand completed its accession on June 30, 2026. The convention will take effect for the country on February 28, 2027. Until that date, a foreign apostille cannot be considered a standalone replacement for the applicable legalization procedure for Thailand.
Which documents can be apostilled for use in Thailand?
The convention covers categories of official documents, including administrative documents and notarial acts. Common examples are birth, marriage, and death certificates, notarial certification of signatures, diplomas, and other educational documents. The applicability of the future procedure depends on the document, the country of issue, and the conditions under which the convention applies; the recipient’s other requirements remain in force.
Does an apostilled document need to be translated into Thai?
Translation requirements are considered separately from the apostille: the receiving organization determines the language and method of certification. The Department of Consular Affairs’ instructions on postal legalization provide for certification of the translation’s accuracy by the translator. This does not mean a universal obligation to notarize every translation.
Where in Russia, Kazakhstan, and Ukraine can you get an apostille on documents for Thailand?
The competent authority is chosen in the country of issue according to the type of document. Until the convention takes effect for Thailand, the issuing country’s participation in the convention does not by itself make an apostille sufficient. First determine the requirements of the Thai recipient and the legalization route; for a future apostille, determine the competent authority and the convention’s application between the relevant countries.
Does the apostille apply to commercial documents?
The convention excludes administrative documents directly related to commercial or customs operations. This is a narrower exclusion than a ban on all business documents. A corporate document or notarial act cannot be automatically excluded solely because of its connection to commercial activity.
Could the terms of Thailand's accession to the convention change?
The date of entry into force has already been published — February 28, 2027 — and the competent authority has been designated. Practical service rules and recipients’ requirements are considered separately; the application of the convention between specific countries also depends on objections to accession. Whether a previously legalized document must be redone is determined by the recipient’s requirements, not assumed automatically.
Conclusion
The apostille in Thailand is a future procedure: accession was completed on June 30, 2026, but the convention takes effect for the country on February 28, 2027. Until the launch, the applicable route of current legalization remains in place. After it, simplification will depend on the type of document and the convention’s application between the relevant countries.
Before paying for processing, determine the country of issue, the type of document, and its recipient. Then agree on the form of the paper, the translation, and the method of certification, so that you do not order unnecessary services. Practical conditions may change, and the requirements of a specific procedure should be checked against official rules. Even a suitable apostille does not replace the other conditions of a visa, family, education, or business procedure.