Tangible personal property used in research and development business . The Department of Tax Administration is responsible for uniformly assessing and billing Personal Property tax, Business License tax, Business Tangible tax.You can choose to pay any City tax online using the Philadelphia Tax Center, but some taxes must be paid online. File your Business Tangible Personal Property (BTPP) tax return online HERE or download a printable copy of the return HERE to submit a hard copy. Search for business topics like employer tax identification number (EIN) information, with the A-Z Index. Our mission is to deliver the best customer experience and value in real estate, acquisition, and technology services to government and the American people. Reductions in the business tangible personal property tax rate for computer equipment and peripherals.