Donna Mahan, CPA


Donna Mahan is a Principal at E. Cohen. She has been with the firm for over 16 years and has more than 30 years of experience providing accounting, tax, and consulting services in the Washington, D.C. Metropolitan area.

Donna currently leads the firm’s Outsourcing Department, providing internal accounting support and often acting as Controller for her clients. She specializes in several industries, including real estate and construction, professional services, government contractors, and law firms. She has extensive experience designing, integrating, and implementing accounting systems for small and medium-sized businesses, as well as performing tax preparation, review, and planning services for individual, corporate, partnership, personal property, sales, and payroll tax returns.

She is a member of the American Institute of Certified Public Accountants (AICPA), the Maryland Association of Certified Public Accountants (MACPA), and the Montgomery County Chamber of Commerce (MCCC).


Donna has extensive experience in the design, integration, and implementation of accounting systems for small and medium-sized businesses.