Certified vs notarized vs sworn translation vs apostille: one clear table

The table

Term	What it is	Who usually asks for it	What it proves
Certified translation	A full translation plus a signed statement by the translator that it is complete and accurate and that they are competent	USCIS, most U.S. federal and state agencies, many schools	Who translated it and that they stand behind it
Notarized translation	A certified translation where the translator signs the statement in front of a notary, who stamps it	Some state offices, some courts, some foreign offices	That the signer is who they say they are. Nothing about accuracy
Sworn translation	A translation by a translator appointed by a court or ministry in countries that have that system	Offices in France, Spain, Italy, Germany, Brazil and others	The translator holds an official appointment in that country
Apostille	A certificate attached to a public document so another country accepts it as genuine	Foreign governments, under the Hague Apostille Convention	That the signature or seal on the document is authentic

Certified: the one you almost always need in the United States

A certified translation is nothing fancy. It is the translation, plus a short signed statement. The statement says the translator can translate from that language into English, and that the translation is complete and accurate. It has a name, a signature and a date.

That is exactly what the federal rule for USCIS asks for. It is quoted below. No notary. No license. No stamp from a government.

Any competent translator can certify. Some people choose a translator whose status can be checked online, so the officer can see who signed and that the person was reviewed by a professional body. That is a choice, not a rule.

Notarized: a stamp on the signature, not on the words

People hear "notarized" and think "more official." Here is what actually happens. The translator signs the certification statement in front of a notary. The notary checks the translator's ID and stamps the page. The notary does not read the translation and could not say whether it is right.

So a notarized translation is a certified translation plus proof of who signed it. That is useful when an office wants to be sure the signature is real. It adds nothing about accuracy.

USCIS does not ask for it. Some state agencies, some courts and some offices abroad do. Read the receiving office's instructions and do what they say, no more.

Sworn: a system the United States does not have

In many countries, translation of official documents is a regulated job. A court or a ministry tests translators and puts them on a list. Those are sworn translators. Their stamp carries legal weight in that country.

The United States does not license translators. There is no national list. That is why a U.S. "certified translation" is certified by the translator, not by a government.

If you are sending a U.S. document to a country with sworn translators, that country may insist on one of its own sworn translators. A U.S. certified translation may not be enough there. Ask before you pay.

Apostille: for the document, not the translation

An apostille is a certificate issued by a government that says a public document, or a notarized signature, is genuine. It exists so that countries in the Hague Apostille Convention do not have to call each other to check seals.

People get confused because an apostille can be placed on a notarized translation. That happens when a foreign office wants both: a translation signed in front of a notary, and an apostille that proves the notary is real. It is a specific request, not a general upgrade.

For documents coming to USCIS, an apostille is not required. For documents going abroad, the receiving office decides.

A quick way to decide

Going to USCIS or another U.S. federal agency: certified translation.
Going to a U.S. state office or court: read their page; certified, sometimes with a notary.
Going to a school or an evaluation service: follow their rule; usually a complete translation by someone other than you.
Going abroad: ask the office there; it may want a sworn translator, an apostille on the original, or a notarized and apostilled translation.

When in doubt, the receiving office's own instructions beat any article, including this one.

What the rule actually says

“Any document containing foreign language submitted to USCIS shall be accompanied by a full English language translation which the translator has certified as complete and accurate, and by the translator's certification that he or she is competent to translate from the foreign language into English.”

Checklist

Find out who will receive the document: a U.S. agency, a U.S. court, a school, or an office abroad.

For USCIS and most federal agencies, get a certified translation; a notary is not part of the federal rule.

For a state office or a court, read their page: some ask for a notarized signature on the certification.

For a university or an evaluation service, follow their translation rules; most want a complete translation by someone other than you.

For use in another country, ask that country's office whether it wants a sworn translator, an apostille on the original, or both.

Never pay for an apostille on a translation unless the receiving office asked for exactly that.

Questions people ask

Is a notarized translation better than a certified one?

No. A notary confirms the identity of the person who signed the certification. The notary does not read the translation and says nothing about accuracy. For USCIS, a certified translation is what the rule asks for.

Does the United States have sworn translators?

Not in the way France, Spain, Germany or Brazil do. Those countries appoint translators through courts or ministries. In the United States, translation is not licensed; a competent translator certifies their own work.

Can I get an apostille on my translation?

An apostille is placed on a public document such as a birth certificate or a notarized signature, to prove it is genuine to another country. Some foreign offices accept an apostille on a notarized translation. Ask the receiving office first.

Which one do I need for a green card or citizenship?

A certified translation. USCIS does not require a notary or a sworn translator, and an apostille is for documents going abroad, not for documents coming to USCIS.

Where IBCOT fits

IBCOT does not translate documents. It is a U.S. professional membership body, not a court or a ministry, so it does not appoint sworn translators and does not notarize anything. What it provides is a verifiable status: a translator who passed the IBCOT examination holds a credential with a public page at ibcot.org/verify. That page is the U.S.-style answer to the question foreign offices answer with a sworn-translator list: who did the work, and can I check it?