About Us

William A. Messina, CPA, PC is a certified accounting and business advisory firm based in Murrysville, Pennsylvania. Since our inception 28 years ago, our experience has helped a wide range of clients, from Real Estate and Construction, Wholesale and Retail Distribution, Medical and Professional Services, and Non-Profit Organizations.

Our focus is on small and medium-sized, closely held and private companies in the Southwestern Pennsylvania area. While our primary services include accounting, taxation, and business consulting, we also offer a host of specialty services to cater to the unique needs of our clients.

Our firm has provided its clients with a combination of professional expertise and personalized service. With a dedicated team of accounting professionals on staff and an exceptionally low rate of turnover, our aim is to provide the widest range of tax, accounting, payroll, and business services, while remaining small enough that you always feel welcome and at home.

At William A. Messina, CPA PC , you can count on forming an ongoing relationship with a trusted business advisor.

Our People - Your Best Asset

Providing expertise and personal service, our staff brings their training, knowledge, integrity and creative abilities to assist you in building your business.

Strategic Alliances

To provide our clients with specialized services, including investment planning, insurance, legal services, and technology services, we have formed strategic business alliances with local professionals.

  • Consulting Specialists
John D. Finnegan Esq.
Mr. Finnegan provides legal services in the areas of wills, estate administration and business support and litigation.

John R. Keating, Esq.
Mr. Keating specialized in the area of receivables collection and debt litigation.

Charles & Deana Moore - Triangle Benefit Services, Inc.
Charles & Deana are specialists in health, property & casualty, group insurance plans, and worker's compensation. They can tailor a plan for you or your business.