a Notarized Affidavit is an official, sworn statement that is notarized by a certified public notary. This document attests to the veracity of any legal matters or facts stated within it. In other words, a Notarized Affidavit is an oath signed and witnessed for in front of a notary that guarantees the facts stated in a document are true and accurate. In theory, all parties involved in a contract or agreement should back up their claims with this type of document, to prevent potential disputes down the road.