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*Important news about our co-founder Terry O'Connor*

Thank you for visiting our website! O'Connor and Desmarais is a full-service tax and accounting firm in Northern Virginia. We have been proud to serve individuals and businesses in the Washington DC metropolitan area for the past 30 years! Schedule your free initial consultation to learn how O'Connor & Desmarais can help you manage your finances!


  • Telephone...
  • (703) 448-0464
  • Fax...
  • (703) 734-6912
  • O'Connor & Desmarais, P.C.
  • 6720 Curran Street
  • McLean, VA 22101

You can also send us a message directly through the contact page of this website.