Apostille, Legalization & Authentication

Why authentication may be required

Portugal visa and residence procedures often rely on public documents issued in another country. Authorities may need formal confirmation that a foreign document is authentic before it can be accepted.

Apostille or legalization

The correct method depends on the country where the document was issued and the international agreements that apply. Documents from countries participating in the Hague Apostille Convention may often be authenticated with an apostille. Documents from other countries may require a different legalization procedure through the relevant authorities or diplomatic channels.

Common documents affected

Civil-status certificates, criminal-record certificates, court decisions, adoption documents, powers of attorney and certain official academic or professional records are examples of documents that may require authentication.

Authentication is not translation

An apostille or legalization confirms the origin or authenticity of a document; it does not translate the document. A separate translation may still be required if the document is not in a language accepted for the procedure.

Do the steps in the correct order

The sequence can matter. In some cases the original document is authenticated first and then translated, while in others the translation itself may also need certification. Check the requirements of the competent Portuguese authority before paying for services.

Do not assume every document needs an apostille

Not every document is subject to the same formalities. The safest approach is to identify which documents are foreign public documents and then verify the current authentication rules for the issuing country and the specific visa or residence procedure.