Certified vs. Notarized Translation: What's the Difference?

Certified translation

A certified translation is a translation accompanied by a signed statement from the translator or agency confirming the translation is complete and accurate to the best of their knowledge. The statement usually includes the translator's name, the language pair, the date and a reference number.

Certification says nothing about a court or a government pre-approving the translator. It is a statement of professional responsibility attached to a specific document.

Notarized translation

A notary public does not check translation quality. The notary verifies the identity of the person signing the certification statement and witnesses that signature. Notarization is therefore certification plus identity verification, and it is often requested by courts, some universities and certain consulates.

Sworn and apostilled translations

In many civil-law countries (Spain, France, Poland, Brazil and others) only a translator sworn in by a court can produce a legally recognised translation. An apostille is a separate step: it authenticates the origin of a public document under the Hague Convention, and is applied to the original document or to the notarised certification.

How to decide what you need

• Ask the receiving institution, in writing, which format they accept.
• Note whether they require a wet signature, a physical mailing or a PDF.
• Check whether the requirement applies to the translation, the original, or both.
• Confirm deadlines: notarization and apostilles add days, not minutes.

How TranslateDocs AI fits in

Every document you upload gets an AI translation first, so you can read and check content immediately. If your institution needs a certified document, you add certified human review at checkout: a professional linguist edits the draft and issues a signed certification statement with a verification ID. Notarization can be added as an extra service where available.