18 de February, 2026
The Hague Apostille is a certification issued under the 1961 Hague Convention that authenticates the origin of a public document so that it can be legally used in another signatory country. In simple terms, it is the procedure that allows a document issued in one country (such as Brazil or the United States) to be officially accepted in another (such as Portugal or Spain), without the need for traditional consular legalization.
In practice, the Hague Apostille is a frequent — and often mandatory — step in Portuguese citizenship or Spanish citizenship processes, as well as in visa applications to study or live in Europe. It ensures that documents such as certificates, diplomas, powers of attorney, and declarations are valid abroad, in the case of countries that are signatories to the agreement.
Atlantic Bridge works with trusted partners in the United States who can arrange the apostilling of your U.S. documents, ensuring their legal validity for Portuguese citizenship and visa applications for Portugal and Spain. Request your quote here.
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Imagine that you have a document issued in your country — for example, a certificate, power of attorney, declaration, or criminal record — and you need to use this document in Portugal or Spain. The question is simple: how can a document issued in one country be valid in another? That is exactly what the apostille is for.
The Hague Apostille certifies the formal authenticity of the document, confirming that it was issued by a competent authority and that signatures, stamps, and seals are genuine. It does not alter the content of the document — it merely allows its international recognition among countries that are parties to the Convention.
It is required in legal processes that demand international validation of a document. The Convention applies when:
Portugal, Brazil, and the United States are parties to the Convention, as are most European countries and more than one hundred countries worldwide. See the full list here.
The practical rule is clear:
The apostille must be issued in the country where the document originated.
In citizenship and visa processes, the documents most commonly apostilled are:
Important: In many procedures, certificates may be required in a specific format, such as full record certificates. In these cases, the correct approach is to first obtain the appropriate certificate and then proceed with the apostille.
Today, there are two main forms of apostilling:
This is the most common model. The authorized registry office issues the apostille and attaches it to the physical document (usually as a separate page or seal with a code or QR code).
This format is especially used for certificates and paper-based documents and continues to be widely accepted in visa and citizenship processes.
The electronic apostille is issued in a digital environment and linked to an electronic document, with verification elements such as a QR code or validation code.
It serves the same purpose: to guarantee the document’s international authenticity, provided it is issued by a competent authority or registry office within the country’s official system.
Atlantic Bridge can arrange your apostille through exclusive and trusted partners, as well as provide guidance on document organization for your visa or Portuguese citizenship process.
Author:
Atlantic Bridge
