Follow the steps to complete your IRS 1042-T form online.

1. Click ‘Get Form’ button to obtain the form and open it in the editor.
2. Fill in the identifying information at the top of the form, including the name of the withholding agent, employer identification number (EIN), and address details, ensuring consistency with Forms 1042 and 1042-S.
3. In line 1, select the type of paper Forms 1042-S attached by indicating either Chapter 4 or Chapter 3, and check the appropriate boxes for original or amended submissions.
4. If applicable, check the box indicating that you are a partnership reporting withholding that occurred in the subsequent year.
5. Enter the number of paper Forms 1042-S attached in the designated field.
6. Provide the total gross income reported on all attached Forms 1042-S in line 2.
7. Complete line 3 by entering the total federal tax withheld amounts from the Forms 1042-S. Choose line 3a for Chapter 4 or line 3b for Chapter 3, but do not complete both.
8. If this is your final return and no additional Forms 1042-S will be required, mark an 'X' in the final return box.
9. Sign the form, include your title, and add the date and daytime phone number.
10. Once completed, save your changes. You can then download, print, or share the form as needed.

Complete your IRS 1042-T form online today for a smooth filing process.