Anyone required to file Forms W-2 (AS), W-2 (CM), W-2 (GU), or W-2 (VI) must file Form W-3 (SS) to transmit Copy A of these forms to the SSA.
Current revision
Instructions for Forms W-2 and W-3 (Print version PDF)
(Including Forms W-2 (AS), W-2 (CM), W-2 (GU), W-2 (VI), W-3 (SS), W-2 C, and W-3 C)
Recent developments
New electronic filing requirements for Forms W-2 -- 07-JULY-2023
Other items you may find useful
About Form W-3, Transmittal of Wage and Tax Statements
About Form W-3 (PR), Transmittal of Withholding Statements
About General Instructions for Certain Information Returns (Forms 1097, 1098, 1099, 3921, 3922, 5498, and W-2 G)