A person commits forgery if, with intent to defraud, the person: 1. Falsely makes, completes or alters a written instrument; or 2.ARS § 13-2002 defines Arizona's forgery law. In Arizona, a written instrument may be considered a forged instrument if it has an altered dollar figure or other material information. If you are facing forgery charges in Phoenix, AZ you need an experienced lawyer to fight for you. Call our team today at (602) 548-3400. Forgery is a Class 4 felony in Arizona, which means a conviction can carry significant penalties, including imprisonment and fines.