We are official sworn translators: legally valid translations worldwide

Do you need to submit official documents abroad?, validate your academic qualifications?, apply for citizenship, residency or a job in another country?

These are some of the most common situations where a sworn (certified) translation is required. If this is your first time dealing with administrative procedures of this kind, don’t worry — at Olyusei, we guide you through the process and make it simple and stress-free.

When do you need a sworn translation?

Distribution of types of sworn translation

You need a sworn translation when official documents must be submitted to public authorities or institutions in another country and those authorities require an officially certified translation.

 A sworn translation: 

  • Has legal validity on its own, when submitted together with the original document
  • Is signed, stamped and certified by an official sworn translator
  • Certifies that the translation is faithful and complete 

This is a formal administrative process recognised internationally.

Most common sworn translations in Spain 

Based on our experience, the most frequently requested sworn translations are:

  • 27% Academic recognition: diplomas, transcripts, degrees, CVs
  • 33% Corporate documents: articles of association, annual accounts, balance sheets, contracts, commercial register certificates, product certificates
  • 35% Personal documents: birth certificates, criminal records, marriage and divorce certificates, death certificates, wills, adoption records, medical certificates
  • 5%: Other documents: tax returns, bank certificates, mortgage documents

At Olyusei, we translate more than 5,000 sworn documents every year. We are used to tight deadlines and urgent requests.

Digital sworn translations: receive your certified translation online

Traditionally, sworn translations are delivered on paper, stamped and signed by the sworn translator, either: 

  • Collected in person
  • Sent by registered post or courier 

Since 2022, the Spanish Ministry of Foreign Affairs allows digitally signed sworn translations. These: 

  • Can be submitted online
  • Do not need to be printed
  • Can be printed multiple times if required 

At Olyusei, many clients choose both options: a hard copy with original stamps and a digitally signed version.

How to order a sworn translation in 5 simple steps.

Step 1:

Scan the complete document (front and back), including stamps and Apostilles, in PDF or image format.

Step 2:

Send the document to info@olyusei.com, indicating:

  • Target language
  • Deadline
  • Delivery method:
    o Digital sworn translation (email) 
    o Physical collection 
    o Courier or registered post 
    o Both digital and physical delivery
Traducción jurada y profesional

Step 3:

Receive your quotation within 1 hour (business hours: Monday to Friday, 9:15–18:30).

Step 4:

Confirm the quote by email and provide proof of payment so we can start the translation.

Step 5:

Receive your sworn translation within the agreed deadline — ready to use anywhere in the world.

Traducción profesional

Important: Apostille and legalisation

Before ordering a sworn translation, make sure your original document: 

  • Has all required stamps
  • Is Apostilled or legalised, if applicable 

If you are unsure, ask us. We’ll advise you before you order.

Why trust Olyusei for sworn translations?

We offer much more than a simple translation:

  • Legal and administrative expertise: we advise you on requirements and submission
  • Fast turnaround: specialists in urgent sworn translations
  • Strict confidentiality: full GDPR compliance
  • All language combinations: including rare languages, through our trusted network

Case study: sworn translations after Brexit

Following Brexit, demand for sworn translations between Spain and the UK increased significantly. 

A British teacher living in Spain needed sworn translations of birth certificates to obtain dual nationality passports for her children. The UK consulate required paper sworn translations. 

We delivered: 

  • Sworn translations on paper
  • Correct presentation of originals and copies 

Result: a smooth and fast administrative process, with no rejections.

Caso práctico en Olyusei

Frequently asked questions about sworn translation

Because official documents must be certified by an authorised sworn translator to have legal validity.

Yes. Sworn translations issued in Spain are valid internationally, provided Spanish is one of the languages involved. 

Olyusei also has sworn translators in the Netherlands for English and Dutch.

It will be stamped and signed, including the sworn translator’s name and registration number, verifiable with the Ministry of Foreign Affairs.

Yes. You normally only pay delivery costs and a small additional fee (usually 10–20%).

No. They are valid as long as the original document is valid. 

Normally 48 hours. Same-day delivery may be possible depending on language and urgency.

Trust Olyusei’s sworn translation service and our accredited professionals. Request a quote now — we reply in under 1 hour.

Order your sworn translation now

Trust Olyusei’s sworn translation service and our accredited professionals

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