How long a notarised translation is valid

Formally, a notarised translation has no validity period — the notary certifies the authenticity of the translator's signature and the accuracy of the translation as of a specific date, and that fact does not become outdated. The problem lies elsewhere: a validity period may attach to the document itself or to the certificate you are translating.

Where there really is a time limit

A police record, register extracts, some bank certificates — for such documents the receiving organisation often sets a "freshness" period, usually 30 to 90 days from the date the original was issued. If the original is "expired" by the institution's requirements, you will have to obtain a new one and translate it again — the translation itself has nothing to do with it.

Practical advice: order the translation as close as possible to the moment of submitting the documents, not in advance "as a reserve" — especially if the document is going to a migration service or a consulate with its own requirements on validity.