Locate the closest Taxpayer Assistance Center to you. You can get in-person help at your local IRS Taxpayer Assistance Center.Call for an appointment after you find a Taxpayer Assistance Center near you. To mail your return directly to us, use the correct mailing address below, depending on whether you expect a refund or owe taxes. Form civil judgment orders are available in the Circuit Court courtrooms and on the link provided at the bottom of this page. To report a legal business name change or a trading-as name change, mail us a completed Form R-3 (Registration Information Change Request). Fairfax, VA 22031 571-351-1700. 2) Free File Fillable Forms are electronic federal tax forms you can fill out and file online for free. The list of resources below will help you understand and correct errors before submitting the Forms 1042S.