Use this form to update an address or report that you're no longer doing business or no longer need to pay taxes in Philadelphia. If you are changing the address of your business you must complete a Change Form in order to register the new location with the Department of Revenue.Gov to change your address online or fill out this form and return to PennDOT using the address listed above. Change of Address form. The form is "Change of Registered Office". Completing a change of address in Philadelphia, is very simple. First, you will want to fill out information about your name or the name of the business. Official USPS® Change-of-Address. By clicking Get Started, I understand and acknowledge the statements below. There are several ways to change the mailing address on your personal income tax account. 1.