The account holder MUST provide an Affidavit of Forgery before any criminal charges can be filed! An affidavit must accompany each forged or counterfeited item.Under penalties of perjury, I declare that to the best of my knowledge and belief the above statement is true, correct, and complete. This affidavit is made voluntarily for the purpose of establishing the fact that my signature is a forgery. 7. Do you know who forged your signatures? If your "signature" is on the affidavit and you didn't sign it, then someone probably forged your signature. An affidavit of forgery is an official declaration that a fraudulent act was committed. It should be completed, notarized, and sent to notify institutions. A Forgery Affidavit form is primarily used when the payee's signature has been forged in the process of receiving payment through a Dallas County check. 143 illegal drug use. 144.