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Accounting is what we do best

McDemus & Co. CPA is a full service Certified Public Accounting and Management Consulting firm, registered as a domestic Virginia limited liability corporation. We specialize in accounting, auditing, taxation, risk assurance and compliance, management consulting, budgeting, and internal control assessment. McDemus & Co. CPA is SBA 8(a) and DBE (VA) certified. We are professional, experienced, and affordable. Our goal, always, is to exceed your expectations.

Our Partners have over 65 years of combined experience in all aspects of Accounting, Auditing, and Tax services. The Managing Partner; Ume Onwuka has served in various auditing, accounting, and consulting capacities in industry, government, and public accounting. He served as District Audit Manager to the Northern Virginia District of the Virginia Department of Transportation. Mr. Onwuka served with the Governor’s Best Practice Team reviewing agency processes and controls to identify opportunities for improvement under the direction of the Chief of Staff. In public accounting, he led several audits of government clients such as the Federal Communications Commission, the Metropolitan Washington Airports Authority, the City of Richmond, and other government entities.

In addition to our capabilities, we maintain teaming arrangements with other CPA firms in the Metropolitan Washington area. These arrangements provide us the ability to respond to any service opportunity presented to us and allows us to quickly and effectively source the best qualified candidates to respond to the needs of our clients.


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(703) 270-1006

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