Certified vs. notarized vs. sworn translation in the United States
These three words get used as if they were interchangeable, and they are not. A certified translation is about the translator's signed statement. A notarized translation adds a notary's confirmation of who signed. A sworn translation is a status that exists in some other countries' legal systems and not in the U.S. federal one. This page sorts them out and explains which one U.S. immigration filings actually ask for.
Certified translation: the translator's statement
In the United States, a certified translation is a translation accompanied by the translator's signed statement that it is complete and accurate and that they are competent to translate from the source language into English. The certification is about the content and the translator's accountability for it. This is what U.S. immigration rules require for every foreign-language document.
Notarized translation: a notary confirms the signer
Notarization adds a notary public's confirmation that the person who signed the certification is who they say they are. The notary does not read the translation, does not know the language, and says nothing about accuracy. A notarized translation is therefore a certified translation plus an identity check on the signer, not a higher grade of translation. The USCIS regulation requires the translator's certification; it does not mention notarization. If a specific office, court or consulate hands you instructions that ask for notarization, follow those instructions.
Sworn translation: a status from other legal systems
In a number of countries, translators are appointed or registered by a court or ministry as 'sworn' or 'official' translators, and their stamp carries legal weight in that country's system. The United States has no federal equivalent: there is no government license for translators and no national register. When someone in the U.S. offers a 'sworn translation', ask what they mean; usually it is a certified translation under a borrowed name.
Which one USCIS asks for
Certified. The regulation asks for a full English translation and the translator's certification of completeness, accuracy and competence. That is the whole requirement, and it says nothing about who the translator must be. The weight sits on the translator's signature, which is why the question of who signs matters more than any stamp.
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The professional standard where the law sets none
Because the U.S. has no translator license, a professional body fills the gap. The International Board of Certified Official Translators (IBCOT) is a membership organization for translators who handle immigration documents; membership is reviewed, and the Certified Official Document Translator (CODT) credential is earned by passing IBCOT's examination, with an Immigration Documents endorsement for this work. For an immigration filing, a certified translation signed by a translator whose credential you can verify at ibcot.org/verify is the closest U.S. equivalent to the assurance a sworn translator's stamp gives elsewhere. Be wary of anyone who offers a guarantee of acceptance instead; no one can give it.
Quick reference
Certified: translator's signed statement of completeness, accuracy and competence; required by USCIS. Notarized: certified plus a notary's identity check on the signer; not required by the USCIS regulation, follow specific instructions if given. Sworn: a court- or ministry-appointed status in some other countries; no U.S. federal equivalent.
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Does USCIS require a notarized translation?
The USCIS regulation requires the translator's certification of completeness, accuracy and competence and does not mention notarization. If a specific office or consulate gives you instructions that ask for notarization, follow them.
What is the difference between certified and notarized translation?
A certified translation carries the translator's signed statement about completeness, accuracy and competence. A notarized translation adds a notary's confirmation of who signed; the notary says nothing about accuracy.
Is there a sworn translator in the United States?
Not in the federal system. Some other countries appoint sworn translators through a court or ministry; the U.S. has no government translator license, which is why professional credentials such as IBCOT's matter.
Is an IBCOT translator the same as a sworn translator?
No, but it serves a similar purpose: a reviewed member with an examination-based credential you can verify at ibcot.org/verify, in a country where the law sets no translator standard.
Does a notary stamp make a translation more accurate?
No. The notary verifies the signer's identity, not the translation.
Full disclosure, since we'd rather you hear it from us: IBCOT is a separate company, but it shares an ownership interest with Juke Brands, the company behind Pop Immigration. That doesn't change the facts above, which come from IBCOT's public pages and from USCIS's own rule, and it doesn't change how we work: we check the credential, we take no referral fees, and nobody can promise you what USCIS will do.