Firm Leadership / Peter O. McDonald

Peter O. McDonald

Peter O. McDonald


Member of the Firm; Accounting Services Director

Team Member Since 2000

Member Since 2015

19405 Emerald Square, Suite 1400
Hagerstown, MD 21742


Client Testimonials

  • Peter has made himself available to us for our questions and concerns. He puts it in layman's language for us which is very helpful.

    A Hagerstown Tax Client

  • Peter McDonald is always responsive to our needs and provides the expert advice that we need. I would absolutely recommend SEK and its services.

    A Hagerstown Tax Client

  • Peter McDonald is by far one of the most professional and conscientious advisors I have on my personal and business financial team. He explains things in a way that is understandable to those of us non-accountants, and is extremely knowledgeable on both my individual financial/tax issues as well as my previous company.

    A Hagerstown Tax Client

  • Peter has always gone above and beyond to answer my calls or return my message promptly. He is efficient and always pleasant to work with.

    A Hagerstown Tax Client

  • On many occasions I have still received answers to questions from Peter when I have received his out of office messages. Him taking the time to make sure questions are answered even when he is on vacation is pretty amazing!

    A Hagerstown Tax Client

  • I am not sure that Peter ever sleeps or takes a day off. He seems to always be there and answers emails, night, day, or weekend. His responses are professional, kind, and always on point. We are so happy we chose SEK and very happy we have Peter as our accountant. Thank you, Peter!

    A Hagerstown Tax Client

  • Exceptional friendliness and professionalism from Peter McDonald and quick, accurate responses to my inquiries.

    A Hagerstown Tax Client

  • Peter McDonald is always patient and answers my questions (even when they probably seem dumb to him). Most importantly, I trust Peter. I have been with SEK for over 20 years and have recommended it to many people.

    A Hagerstown Tax and Accounting Services Client

  • Peter has been exemplary in his service and professionalism.

    A Hagerstown Tax Client

  • No matter what concern I have when I call Peter, he is always very helpful and provides me with the correct answer.

    A Hagerstown Tax Client

  • Peter has done so much for me over the years.  There has never been a situation or problem that he has not helped me work through and gotten resolved.

    A Hagerstown Tax and Accounting Services Client

  • He keeps the business relationship business-like and the personal relationship friendly and caring.

    A Hagerstown Tax Client



Peter works as a trusted advisor of closely-held and family-owned businesses, their owners and individuals. He focuses on providing accounting, tax, and consulting services to his clients and has expertise working with new business startups, dealing with multi-state taxation, and has a special proficiency in accounting system compliance for federal government contractors. Peter also has experience assisting clients with Canadian income taxes.

Peter was named the Small Business Administration’s 2017 Maryland Accountant Advocate of the Year for his work assisting small businesses.

In addition to his client responsibilities, Peter chairs the firm’s Accounting, Consulting, & Tax Services Committee and is responsible for the overall management and direction of the firm’s accounting and payroll practice.


  • Baccalaureate in Commerce, with honors in Accounting – University of Ottawa, Canada

Professional Affiliations

  • Certified Public Accountant – Maryland
  • American Institute of CPAs
  • Maryland Association of CPAs

Just For Fun

  • WHERE HE IS FROM - Grew up in a small town in Canada; moved to the U.S. shortly after college
  • MOST INSPIRING PART OF HIS JOB - Being an advocate for clients, supporting them in their business endeavors, and celebrating their successes

Contact Us to Schedule a Consultation