Sworn vs Certified vs Notarized Translation
By Burak Ünal, Founder & Sworn Translator (English, French) · Updated 2026-08-20
Sworn, certified and notarized translation are related but not identical. Knowing which one you need saves time and rejected documents.
Key takeaways
- Sworn: made by a translator sworn before a Turkish notary.
- Certified: accompanied by a statement of accuracy; for official use it is done via a sworn translator and notarized.
- Notarized: a sworn translation certified by a notary - what most Turkish authorities require.
- Apostilled: an added certificate for documents that will be used in another Hague Convention country.
- None of them vouch for the truth of the original document, only for who translated and certified it.
These terms are often used interchangeably, but they mean different things in Turkey. Using the wrong one is not a vocabulary problem: it is the reason documents get handed back at the counter. Here is how they compare.
Sworn translation
A sworn translation is produced by a translator who has taken an oath before a Turkish notary. The translator's competence and signature are on record with that notary, which is the basis for official acceptance. The status attaches to the translator, not to any individual document.
Certified translation
A certified translation is a translation accompanied by a statement of accuracy. The term travels badly: in some countries a translation company's own certificate is sufficient on its own. In Turkey, certification for official use is normally provided through a sworn translator and then notarized.
Notarized translation
A notarized translation is a sworn translation that a Turkish notary has certified. Notarization is the step most Turkish authorities ask for, and it is only available on work signed by a translator sworn before that notary office.
At a glance
| Type | Who stands behind it | Typically used for |
|---|---|---|
| Sworn | A translator sworn before a Turkish notary | The basis for anything official; often notarized on top |
| Certified | A statement of accuracy accompanying the translation | Accepted alone in some countries; in Turkey normally taken further |
| Notarized | A Turkish notary certifying a sworn translation | Most Turkish official procedures |
| Apostilled | An authorized Turkish public office | Documents that will be used in another Hague Convention country |
Which one do I need?
- For most Turkish official procedures: a sworn translation that is then notarized.
- For use abroad: notarization plus an apostille.
- For business or website content: a professional translation, no certification needed. See website translation.
What none of them do
It is worth being precise about this. Certification and notarization confirm who produced the translation and that the notary verified that person's status. They do not vouch for the truth of what the original document says, and an apostille authenticates the origin of a public document rather than its contents. A perfectly notarized translation of an incorrect certificate is still an incorrect certificate.
When in doubt, ask the receiving office
The office that will receive your document is the authority on what it needs, and a one-line answer from them costs nothing. Tell us how your document will be used and we will confirm exactly what is required. If you want the whole sequence in order, see how to get a sworn translation in Turkey.
Frequently asked questions
Is a certified translation enough in Turkey?
For official use, authorities usually want a sworn translation that is then notarized, rather than a plain certified translation.
When do I need an apostille too?
When a document will be used in another Hague Convention country, on top of notarization.
Which do I need for a business or website?
A professional translation, with no notarization or apostille required.
Why do these terms mean different things in different countries?
Because each country defines who may certify a translation. In some, a translation company's own certificate suffices; in Turkey the route runs through a translator sworn before a notary.
Does notarization mean the notary checked the translation?
No. The notary verifies that the signer is a sworn translator and that the details are consistent with the source document, not the quality of the wording.
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