If you need a foreign document to be legally valid in Spain, a normal translation will not be enough. You will need what is called a "Traductor Jurado", known in English as a Sworn Translator or Certified Translator.

A Sworn Translator is accredited to give legal validity to the translation of a document, for example when it needs to be presented before a Spanish court. They are authorized by Spain's Ministry of Foreign Affairs, and their signature and official seal authenticate the translated content as a true and faithful version of the original.

Why this matters to you

This role is important because it guarantees that a translated document can be trusted and used in serious situations, such as bids, tenders, or litigation. If a document you need translated will be used in any formal or legal process in Spain, make sure it goes through a Sworn Translator, otherwise it may not be accepted.