You may want to be requested to do a Form W-4 once first you begin work. Now that you've completed most of the forms, you've got many of the info you will have to finish the 2019 W4 Form on Page 1. If joint accounts, the proper execution really needs to be submitted by the account holder. Is usually is straightforward, you can use the IRS'withholding calculator to assist you to you. There's no joint Form 709. If you choose to finish the on-line form, links in the PMP Handbook direct you towards the on-line variant for the application.