Use this form to apply for or renew a paid preparer tax identification number (PTIN). Current Revision Form W-12PDF Instructions for Form W-12PDF Recent Developments None at this time. Other Items You May Find Useful All Revisions for Form W-12 About Form 8945, PTIN Supplemental Application For U.S. Citizens Without a Social Security Number Due To Conscientious Religious Objection About Form 8946, PTIN Supplemental Application For Foreign Persons Without a Social Security Number Other Current Products