Maryland Audit, Tax and Consulting

A strong history serving Maryland

As one of the largest accounting firms in Maryland, we combine full-service capabilities with deep resources, industry insight, practical advice and senior-level involvement to help middle market companies succeed.

Commitment to the community

In addition to serving the needs of our clients, our Maryland offices are committed to serving the needs of our community. We are honored to have received the Baltimore Mayor’s Business Recognition Award in 2015 for demonstrating outstanding community service.

RSM is a proud member of BLocal, a commitment by Baltimore-area businesses to leverage their collective influence to help strengthen the city. Through this initiative, we are committed to provide pro bono business advice and mentoring services to Baltimore area entrepreneurs and small nonprofit organizations. In partnership with the Cristo Rey Student Sponsorship program and the Baltimore City YouthWorks program, we sponsor Baltimore-area students as they explore career opportunities throughout the city.

In addition to these BLocal commitments, our office contributes to the RSM US Foundation, supporting organizations committed to providing a more stable environment for youth in the areas of hunger, housing and health, which will ultimately help them excel in education.

Employment opportunities

For information regarding the employment opportunities currently available in Maryland, please visit the Careers section of our site.

For more information, please contact:

Maryland Insights

Maryland releases 2017 tax filing season guidance

Comptroller’s general information webpage provides important reminders and changes to 2016 tax year forms for the 2017 tax filing season.

Maryland Tax Court applies enterprise dependence nexus test

Maryland Tax Court finds corporation had nexus in the state because “enterprise dependence” existed with in-state subsidiaries.

Keep an eye on state tax amnesties in Maryland, Missouri and Indiana

Maryland, Missouri and Indiana enact a new round of broadly applicable state tax amnesty programs.

US Supreme Court issues Wynne ruling

The U.S. Supreme Court has ruled that the Commerce Clause requires a state to provide residents a credit for taxes paid to other states.

Maryland enacts tax amnesty program

Maryland enacts tax amnesty program that applies to nonfilers and taxpayers that underreported or underpaid a wide variety of state and local taxes.

Maryland income tax for resident owners of S corporations

Follow the Comptroller of the Treasury v. Wynne case to see how Maryland will apply income tax credits against personal and business taxes.

2014 Manufacturing & Distribution Monitor state reports

supplement 2014 Monitor report, a number of additional reports provide an in-depth look at industry in various states across the country.

Maryland economic substance requirement for out of state affiliates

Maryland businesses with out-of-state subsidiaries should take note that these subsidiaries may not be shielded from Maryland corporate income tax.

NOL quirks are one thing but Maryland takes the cake

Maryland’s complex rules for net operating losses subject taxpayers to a high risk of error. Is an overhaul of the system in order?

Maryland Locations


100 International Drive
Suite 1400
Baltimore , MD 21202

Marty Brunk, Office Managing Partner


5291 Corporate Dr
Suite 100
Frederick, MD 21703

Dara Castle, Market Managing Partner


9737 Washingtonian Blvd.
Suite 400
Gaithersburg, MD 20878

Dara Castle, Market Managing Partner

Maryland Events


RSM’s 7th Annual Baltimore Clients, Alumni and Friends CPE event

Register now for RSM’s Seventh Annual Baltimore Clients, Alumni and Friends CPE event on Nov. 7, 2017. This annual event is time well-spent.

  • November 07, 2017


7th Annual Washington Metro Clients, Alumni and Friends CPE event

Register now for RSM’s Seventh Annual Washington Metro Clients, Alumni and Friends CPE event on Thursday, Nov. 2 at Westwood Country Club.

  • November 02, 2017