Handling foreign public documents is often one of the most challenging aspects of immigration and international administrative procedures. Criminal record certificates, birth certificates, marriage certificates, academic diplomas, and notarized documents usually need to go through a legalization process before they can be used outside the country where they were issued.
That process will soon become much simpler for public documents issued in Thailand.
On June 30, 2026, the Kingdom of Thailand officially deposited its instrument of accession to the Hague Convention of 5 October 1961 Abolishing the Requirement of Legalization for Foreign Public Documents, commonly known as the Hague Apostille Convention.
Although Thailand has already completed its accession, the Convention will enter into force for Thailand on February 28, 2027.
⏺️ What is the Hague Apostille Convention?
The 1961 Hague Convention eliminates the need for the traditional chain of diplomatic and consular legalization between participating countries.
Instead of obtaining multiple certifications from different national authorities and consulates, a public document only needs a Hague Apostille, issued by the competent authority in the country where the document originated.
Once apostilled, the document can be presented directly in any other Contracting State to the Convention, including Spain.
💡 If you’re unsure whether a country is a party to the Hague Apostille Convention or which authentication procedure applies to your documents, you can consult our Hague Apostille Guide. It includes the full list of Contracting States, the competent authorities in each jurisdiction, and the key requirements you should be aware of before starting the process.
ARC Legal Guide: Which countries accept the Hague Apostille?
⏺️ What changes for documents between Spain and Thailand?
Until now, public documents issued in Thailand intended for use in Spain had to undergo a more complex legalization process involving several national authorities and, in many cases, the relevant consular offices.
Once the Convention enters into force for Thailand on February 28, 2027, this process will become significantly simpler. As long as the document falls within the scope of the Convention, obtaining a Hague Apostille from the competent Thai authority will be sufficient.
This simplification will benefit not only Thai nationals who need to submit documents in Spain, but also individuals and businesses that need to use Spanish public documents in Thailand, whether for personal, academic, professional, or commercial purposes.
⏺️ How can ARC Legal help?
At ARC Legal, we provide a comprehensive international document management service for both individuals and businesses that need to use foreign documents in Spain or Spanish documents abroad.
Thanks to the strategic location of our offices, close to embassies, consulates, and Spain’s main public authorities, we are able to coordinate many legalization and apostille procedures efficiently, reducing processing times while providing continuous support throughout the entire process.
Our services include:
- Hague Apostilles.
- Consular legalizations.
- Obtaining official certificates.
- Certified translations.
- International coordination with public authorities and government institutions.
- Document review for immigration, nationality, and international mobility procedures.
Our goal is to ensure that every document is properly prepared before your application is submitted, helping you avoid delays and unnecessary requests from the authorities.
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¿Prefieres leer este artículo en español 🇪🇸? Aquí tienes el enlace: Tailandia se incorpora al Convenio de la Apostilla de La Haya
The information provided in this article is for general informational purposes only and does not constitute legal advice. Spanish immigration regulations and administrative practice are subject to frequent legislative and interpretative changes. While ARC Legal makes every effort to keep this information accurate and up to date using official sources, we recommend seeking professional legal advice before starting any procedure or making legal decisions. If you require personalized assistance, please feel free to contact our team.