A certified translation must include a signed document by the translation agency attesting that the translation provided is complete and accurate. On the other hand, a notarized translation is as similar as a certified translation, except an official government representative or notary of the public must be present to sign off on the document.This notary certification is sometimes in addition to the translator’s certification. Most certified document translation services take up to 24 hours. However, turnaround times are dependent on the total number of words in your order and are calculated during the quote and approval process.