A declaration is an unsworn statement that has the same validity under Washington law as a sworn statement. To be a valid replacement for a sworn statement, however, the written statement or declaration must include language certifying the declarant’s understanding that the declaration is made under penalty of perjury under the laws of the state of Washington, that the contents of the document are true and correct, and recite the date and location that the document was signed by the declarant. A declaration is often used in Washington instead of a sworn statement, in which a notary would be needed.