Sworn vs. Notarised vs. Certified: Terms Explained

If you are submitting documents to a German authority, you have probably been asked for a "certified", "sworn", or "notarised" translation — and quite possibly all three at once, with an "apostille" thrown in for good measure. These words are used loosely in everyday speech, but they mean different things and involve different people. Getting the distinction right saves you from paying for the wrong service or having your paperwork rejected.

This guide untangles the four terms and explains which one German authorities usually mean when they ask.

The four terms at a glance

Before the detail, here is the short version of who does what:

Term	Who performs it	What it confirms
Certified translation	A qualified translator	The translation is complete and accurate
Sworn translation	A court-sworn (authorised) translator	Same, backed by a court-appointed authority
Notarisation	A notary	The authenticity of a signature or a copy
Legalisation / apostille	A government office	The authority behind an official stamp

The key thing to notice is that these are not four levels of the same thing. A translation and a notarisation are separate acts, and an apostille is a separate act again. Depending on the document, you may need one of them, or a combination.

Certified translation

A certified translation is one accompanied by a signed statement from the translator confirming that it is a true and complete rendering of the original. This statement — often called an attestation or certification clause — usually appears at the foot of the translation, together with the translator's signature and stamp.

In many English-speaking countries, "certified translation" can simply mean a translator or agency vouching for their own work, with no official register behind it. That is worth keeping in mind, because in Germany the bar is higher.

Sworn translation

In Germany, the translations that authorities accept for official purposes are produced by a sworn translator — a translator who has been formally authorised by a regional court (Landgericht or Oberlandesgericht). Depending on the federal state, you will see titles such as beeidigt, vereidigt, or ermächtigt. They all point to the same idea: the translator has taken an oath before a court and is entered in an official register.

A sworn translation carries:

• The translator's certification that the text is complete and accurate
• Their official stamp, which references their court authorisation
• Their signature

Because the authorisation comes from a court rather than the translator alone, German offices treat these translations as officially valid. In practice, when a German authority asks for a "certified translation" (beglaubigte Übersetzung), this is almost always what they mean — a translation certified by a court-sworn translator. The everyday German phrase and the strict legal concept map onto the same document.

Why the wording trips people up

The confusion arises because the German beglaubigte Übersetzung is routinely translated into English as "certified translation", while the person behind it is a "sworn translator". So the document is "certified" but the translator is "sworn" — two different English words describing one German process. If a German office asks for a beglaubigte Übersetzung, you need a sworn translator; you do not, in the vast majority of cases, need a notary.

Notarisation

Notarisation is a separate step performed by a notary (Notar), not by a translator. A notary does not judge whether a translation is accurate. Instead, a notary typically confirms one of two things:

• That a signature on a document is genuine, or
• That a copy is a true copy of an original document

You might encounter notarisation when, for example, a foreign institution insists that a copy of your diploma be certified as authentic by a notary, or when a contract needs a witnessed signature. It is about the document's authenticity, not its linguistic content.

Because these are different acts, a document can be both notarised and translated by a sworn translator — but the two are usually requested by different parties for different reasons. If your instructions only mention a translation, adding a notary is generally unnecessary and adds cost. When in doubt, ask the receiving office to state exactly what they require.

Legalisation and the apostille

The final term, legalisation, comes into play when a document has to cross borders. Authorities in one country cannot easily verify the stamps and signatures of officials in another, so an extra layer of confirmation is sometimes required.

• Apostille — For countries that are party to the Hague Apostille Convention, a single certificate called an apostille confirms that the official signature or seal on a public document is genuine. It is issued by a designated authority in the country where the document originates.
• Full legalisation — For countries outside the Convention, a longer chain of confirmations through embassies or consulates may be needed instead.

An apostille authenticates an underlying official document or signature; it does not translate anything and it does not replace a translation. If you need both, the usual order is to obtain the apostille on the original first, then have the document — often including the apostille itself — translated by a sworn translator.

Which one do German authorities usually mean?

For the most common situations — registering a marriage, enrolling at a university, applying for residence, or presenting foreign certificates — a German office asking for a beglaubigte Übersetzung wants a sworn translation by a court-authorised translator. That single document usually satisfies the request.

You may additionally need:

• A notarisation only if a specific office asks for a certified true copy or a witnessed signature.
• An apostille or legalisation only if a foreign authority needs to confirm the authenticity of a German public document, or a German authority needs the same for a foreign one.

The safest approach is always to check the exact wording of the request and, if it is ambiguous, to ask the receiving authority to confirm whether they need a sworn translation, a notarised copy, an apostille, or a combination.

Key takeaways

• A certified translation confirms accuracy; in Germany this is done by a court-sworn translator, and the two terms describe one document.
• Notarisation is done by a notary and confirms a signature or a copy — not the translation itself.
• An apostille or legalisation authenticates an official stamp for use abroad and does not translate anything.
• When a German office asks for a beglaubigte Übersetzung, it almost always means a sworn translation.
• Only add notarisation or an apostille when a specific authority explicitly asks for it — check the exact wording first.

If you are unsure which of these you need, the simplest starting point is a sworn translation from a court-authorised translator, which covers the great majority of official requests in Germany. You can begin with Trusted Lingo and see how it works on our services page — and if your document also needs a notary or an apostille, we are happy to point you in the right direction.