How to File for a Maryland DBA

by Mary Jane Freeman ; Updated September 26, 2017

If you don't want to use your legal name as your business name, you must register the alias, also known as a "doing business as" name, with the Maryland Department of Assessments and Taxation. This rule applies to both domestic and foreign businesses that operate in the state. To register your alias, submit an application and the filing fee to the DAT.


Obtain trade name application from Department of Assessments and Taxation website. Provide your chosen DBA name, your legal name and address, and the location and purpose of the business. Sign the bottom of the application and disclose your professional title.

Filing Options

You can file your DBA application in person, by mail or by fax. The filing fee is $25. Include a check for this amount payable to Department of Assessments and Taxation. To file by mail, send to:

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

To file by fax, send the form to 410-333-7097. Include a cover sheet with your mailing address, telephone and fax numbers, credit card number, CVV code and expiration date, and signature. You also can file in person at the Charter Division office, located at 301 W. Preston Street in Room 801, between 8:30 a.m. and 4:30 p.m. on weekdays.

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Processing Time

The Department of Assessments and Taxation processes DBA filings within 10 weeks of receipt. To speed up the process, pay an additional $50 for expedited service. This brings your total filing cost to $75. If you file in person, your application will be processed while you wait. However, you must arrive before 4:15 p.m. If you file by mail or fax, it will be processed within seven business days.

Validity Period

Once approved by the Department of Assessments and Taxation, your DBA filing remains valid for five years. Renew the filing for an additional five-year term within six months of the expiration date. If you fail to do so, DAT will terminate the alias. This means you will have to submit a new DBA application to resume using it.

About the Author

Based on the West Coast, Mary Jane Freeman has been writing professionally since 1994, specializing in the topics of business and law. Freeman's work has appeared in a variety of publications, including LegalZoom, Essence, Reuters and Chicago Sun-Times. Freeman holds a Master of Science in public policy and management and Juris Doctor. Freeman is self-employed and works as a policy analyst and legal consultant.

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