For nearly two decades, one of the most significant areas of growth for Sisterson has been the not-for-profit sector.




Sisterson’s service to the not-for-profit sector began, and continues today, with our service to some of the largest private and family foundations in western Pennsylvania. Over the years, a much broader spectrum of not-for-profit organizations has been the source of significant growth to our Firm. We have made a substantial commitment in this area and are proud to serve a variety of organizations widely known in the Pittsburgh area including public charities, membership organizations, private clubs, economic development organizations, as well as foundations.


In order to best serve these clients, we:

  • Develop a thorough understanding of the unique characteristics of and issues that face each organization
  • Provide an uncompromising commitment to quality and technical excellence
  • Deliver personal service and responsiveness that is second to none

This combination results in real value for fees paid. Our success in the not-for-profit arena is evidenced by the continued growth of this practice area and the long-term nature of the relationships we enjoy with our not-for-profit clients.


Sisterson provides service to not-for-profit organizations in numerous ways, including:

  • Audits, reviews and compilations
  • Single audit and related assurance services
  • Tax-exempt compliance and consulting
  • Assistance with accounting outsourcing
  • Internal control analysis
  • Information technology
  • Financial services