You will definitely be requested to try and do a Form W-4 once you firstly begin work. Now you've completed many of the forms, you might have each of the info you need to finish the 2019 W4 Form on Page 1. Any time joint accounts, the application requires to be submitted by the primary account holder. Whilst it is straightforward, you may use the IRS'withholding calculator to help you. There's really no joint Form 709. If you decide to finish the on-line form, links within the PMP Handbook direct you towards the on-line variant from the application.