Sisterson & Co. LLP is one of the largest independently-owned CPA firms in the Pittsburgh area. Our professionals provide tax, audit and assurance, consulting, and commercial lender services to clients regionally and across the nation.

For 90 years, our philosophy has been consistent - commit to excellence, the highest of ethics, and personal service in each engagement for every client.

What differentiates us from other firms is what we call the Sisterson Standard.  Simply, these are the standards by which we work with our clients and how we run our engagements:

  • Partner involvement in engagements
  • Technical expertise in complex matters
  • Commitment to integrity, competence and objectivity
  • Dedicated and responsive staff with low turnover
  • History of exemplary client service

Contact us at to learn more.

We proudly support:





Strategies - March Issue - includes these articles:

  • Tax Related Identity & Tax Scams
  • Reduce the Threat of Identity Theft from Payroll Records at Your Business
  • IRS Compliance Questions on the 2015 Form 5500 - Do Not Complete, But Do Not Ignore
  • The Small Business Retirement Plan Tax Credit
  • Client Spotlight: The Pittsburgh Foundation
  • Sisterson Happenings

WQED Changing Pittsburgh, Changing Lives

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