Department of Assessments and Taxation
301 W. Preston Street, Room 801 
Baltimore, MD 21201-2395

In person Customer Service hours, Monday - Friday 8:30 AM - 4:30 PM 


Phone: 410-767-1184
Outside the Baltimore Metro Area: 1-888-246-5941
Maryland Relay: 1-800-735-2258
General inquiries email: ​sdat.411@maryland.gov​

View a list of frequently contacted DAT offices
Your local government tax biling & collection office contacts