To file a paper Form 48, specifically the Business Registration Form 48 for the Regional Income Tax Agency (RITA) in Ohio, you need to complete the form with your business information (name, federal ID, address, filing status, etc.) and then submit it to the Regional Income Tax Agency as instructed in the form's guidelines

. The exact mailing address or submission details are provided in the instructions accompanying the form. If you are referring to another Form 48, please specify the form type or issuing agency for more precise filing instructions.