If you or the IRS changes your federal return, you must file an amended Virginia return within one year of the final IRS determination. Complete and sign this form if (1) a tax return preparer filed a Form 1040 series tax return or altered your Form 1040 series tax return.Once you open the form, you will need to click on "Enable All Features" in order to view and fill in the form. . Both employees and employers (or authorized representatives of the employer) must complete the form. The landlord does not fill out this form. REQUEST FOR TAXPAYER IDENTIFICATION NUMBER AND CERTIFICATION (IRS Form W-9). Use our Form Filler to fill out your form and print it. We're currently processing paper returns received during the months below. These are the most frequently requested US Department of Labor forms. You can complete some forms online, while you can download and print all others.