A current address will ensure that you receive important mailings. Any real persons MUST be at least 21 years of age.If a corporation, limited partnership, limited liability company, or business trust would like to change the address of the current agent, please select box 2. Send forms to the P.O. Box Number listed on the form. Fill out all the requested information on the form and mail it, along with payment of the processing fees, to the listed address. Use Form 8822-B to notify the Internal. According to Ohio law, all change of mailing address requests must be submitted in writing to the Montgomery County Treasurer.