The Pennsylvania Certificate of Negation is a document that is issued by the Pennsylvania Department of Revenue to exempt a business from certain tax liabilities. This certificate is used to prove that a business is not liable for certain taxes, such as sales tax, use tax, and employer withholding. The certificate is typically issued when a business does not have a physical presence in the state of Pennsylvania. There are two types of Pennsylvania Certificates of Negation: (1) the General Certificate of Negation and (2) the Specific Certificate of Negation. The General Certificate of Negation is used to exempt a business from all taxes that are listed in the certificate. The Specific Certificate of Negation is used to exempt a business from specific taxes that are listed in the certificate. Both certificates must be signed and dated by an authorized representative of the business and must be submitted to the Pennsylvania Department of Revenue for approval.