Sam Yu · California Court Certified Interpreter (Mandarin), No. 301482
Certified vs. Notarized Translation: What's the Difference?
People often ask for a notarized translation when what they need is a certified one, or the other way round. The two answer different questions: certification is about whether the translation is accurate, and notarization is about who signed the statement. This guide explains the difference and when each is needed. It is general information, not legal advice; when in doubt, ask the office that will receive your documents.
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1. A certified translation: the translator vouches for accuracy
A certified translation comes with a signed statement from the translator saying the translation is complete and accurate and that they are competent to translate between the two languages. The translator takes responsibility for the content.
2. A notarized translation: a notary confirms who signed
A notary public checks the translator's identification and watches them sign that statement. The notary does not read or check the translation. Notarization adds proof of identity, not proof of accuracy.
3. Which one you need
It depends on who will receive the documents:
- USCIS: a certified translation. The rule asks for a full English translation with the translator's certification of accuracy and competence (8 CFR 103.2(b)(3)); it does not ask for notarization.
- California courts: exhibits in a foreign language need an English translation certified under oath by a qualified interpreter (California Rules of Court, rule 3.1110(g)). In California a declaration signed under penalty of perjury generally serves in place of a notarized affidavit (Code of Civil Procedure §2015.5).
- County offices: some county clerks, such as Los Angeles County's, verify a translation only when the translator is a California court interpreter or ATA-certified, and only with the translator's declaration notarized.
- Schools, foreign agencies and private companies: requirements vary, and some ask for notarization. Ask the receiving office before you order.
4. Who can certify a translation
USCIS keeps no list of approved translators; the translator certifies their own competence. Courts look for a qualified interpreter, and some county offices accept only court interpreters or ATA-certified translators. A California court certified interpreter meets each of these.
5. How we handle it
Tell us where the translation is going when you ask for a quote, and we'll tell you what it needs. A signed certificate of accuracy and notarization are each available as add-ons, along with a mailed hard copy.
Not sure what you need?
Sam Yu is a California Court Certified Interpreter (Mandarin), No. 301482, and prepares every translation personally. Ask for a quote and say who will receive the translation.
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