To enter or review information on Form 1042-S Foreign Person's U.S. Source Income Subject to Withholding (only for those filing Form 1040NR):

1. From within your TaxAct return (Online or Desktop), click Federal. On smaller devices, click the menu icon in the upper left-hand corner, then select Federal.
2. Click Form 1042-S
3. Click +Add Form 1042-S to create a new copy of the form or Review to review a form already created 
4. The program will proceed with the interview questions for you to enter or review the appropriate information

Note. Any income entered on Form 1042-S will not transfer anywhere else in the program. It must be manually entered on the applicable form(s) or schedule(s) to be properly reported on your return.