Review and complete the Local Services Tax Exemption Certificate and provide all supporting documentation. Paid more for Local Services Tax for the year?Complete, print and mail the form below to: Registration, City of Pittsburgh, 414 Grant Street RM 207, Pittsburgh, PA 15219-2476 Business Registration Form. Discover how Pitts can be the bridge to your future. Apply today or log in to the admission portal for your application status. Let us walk you through the admissions process to apply to be an undergraduate, first-year student. This is the easiest way to electronically fill out the forms and prevent losing any information that you've entered. Fill in the oval that describes your status on Dec. 5) Complete the Forms: Fill out the tax forms accurately. Double-check your entries to avoid errors that could lead to delays or penalties.