You may be requested to perform a Form W-4 once you first begin work. Now you've completed lots of forms, which you have the entire info you will need to finish the 2019 W4 Form on Page 1. Any time of joint accounts, the contour needs to be submitted by the first account holder. Is usually is straightforward, you need to use the IRS'withholding calculator to help you you. There's no joint Form 709. If you opt to finish the on-line form, links around the PMP Handbook direct you into the on-line variant with the application.