Agency Directory Customer Service Center Address: 941 North Capitol Street, NE, 1st floor Washington, DC 20002 Administration Phone Number Fax Number Customer Service Center                                       (202) 727- 4TAX (4829)            (202) 442-6890            Compliance Administraion Audit Division Collections Division   (202) 442-6854 (202) 727-4TAX or 724-5045   (202) 442-6883 (202) 442-6885 Communications/Media Inquiries (202) 442-8072 (202) 442-6477 Customer Service Administration (202) 442-6700 (202) 442-6304 Director's Office (202) 442-6200 (202) 442-6477 Office of the General Counsel (202) 442-6500 (202) 442-6479 Problem Resolution Office (202) 442-6348 (202) 442-6948 Real Property Tax Administration Assessment Division Assessment Services Division Recorder of Deeds   (202) 442-6740 (202) 442-6664 (202) 442-5374   (202) 442-6796 (202) 442-6691 (202) 442-9629 Returns Processing Administration (202) 442-6300 (202) 442-6330 Tax Fraud Hotline 1-800-380-3495 (202) 442-6888 Tax Practitioner Hotline (202) 727-1435 (202) 442-6304