Contact Taxpayer Service

E-mail

You can e-mail your business tax questions to us at taxhelp@comp.state.md.us Please include your business name, address and your nine-digit federal employer identification number (FEIN) or eight-digit Maryland central registration number in your e-mail message. This will help us generate a quick response to your inquiry.

Telephone Assistance

Call 1-800-MD TAXES or 410-260-7980 from Central Maryland. Telephone assistance is available 8:00 a.m. - 5:00 p.m., Monday through Friday.

Mailing Address

Comptroller of Maryland
Revenue Administration Center
Taxpayer Service Section
Annapolis, Maryland 21411