Use this form to report railroad retirement taxes imposed on compensation received by employee representatives. Current revision Form CT-2 PDF Recent developments None at this time. Other items you may find useful All Form CT-2 revisions Other current products Related items About Form 1040-X, Amended U.S. Individual Income Tax Return About Form 8959, Additional Medicare Tax About Form W-12, IRS Paid Preparer Tax Identification Number (PTIN) Application and Renewal