A Pennsylvania W9 is a form used by the Commonwealth of Pennsylvania for the collection of taxpayer information. This form is used by employers, vendors, and other organizations to collect name, address, and Tax Identification Number (TIN) information from individuals and businesses. The Pennsylvania W9 has two types, the 1099-MISC and the W-9S. The 1099-MISC form is used by employers to report payments made to non-employees, such as independent contractors or freelancers. The W-9S form is used by vendors and other organizations to collect taxpayer information from individuals and businesses. The Pennsylvania W9 forms must be completed and returned to the appropriate state agency in order to receive payment or other services.