Use this form to transmit paper Forms 1042-S, Foreign Person's U.S. Source Income Subject to Withholding, to the Internal Revenue Service. Current Revision Form 1042-T PDF Recent Developments None at this time. Other Items You May Find Useful All Form 1042-T Revisions Publication 1187, Specifications for Electronic Filing of Form 1042-S, Foreign Person's U.S. Source Income Subject to Withholding PDF Other Current Products Related About Form 1042-S, Foreign Person's U.S. Source Income Subject to Withholding