Petition for Probate of Authenticated Copy of Will(PDF, 6MB) - Complete this form and present it when filing authenticated record. Complete a W9 tax form.Note: Before filling out this form, we strongly suggest that you consult with your tax advisor regarding your tax filing obligations. These forms will be useful when filing required documents related to estates of deceased or incapacitated persons. Download Forms and Publications. Tax Forms, Work From Home - Local Services Tax and Payroll Expense Tax Information(PDF, 245KB), Important Information for City of Pittsburgh Taxpayers.