Sisterson & Co., LLP

Sisterson & Co., LLP is a certified public accounting and advisory firm in Pittsburgh, PA, serving businesses, individuals, and trusts with expertise in audit, tax, and advisory services. With a history spanning over a century, the firm has built a reputation for thorough, client-focused work across industries including manufacturing, distribution, commercial services, energy, not-for-profits, and employee benefit plans. Their services include tax compliance, sophisticated tax planning, business valuations, due diligence, financial audits, and strategic advisory work, delivered with a consistent standard of integrity and responsiveness. The firm maintains a long-standing presence in the region, serving clients locally, regionally, and nationwide. Though rated 3.00, the firm’s depth of service and longstanding client relationships reflect a trusted professional presence.

Rooted in a tradition of independence and client dedication since 1926, Sisterson & Co. LLP operates as a partnership of 16 professionals who uphold the “Sisterson Standard”, a commitment to technical excellence, integrity, partner involvement, and responsive service. The firm has grown organically without mergers or acquisitions, maintaining a culture centered on long-term client success. Its team specializes in complex matters such as consolidated tax returns, AMT planning, international tax compliance, and structured business acquisitions. With a focus on niche industry expertise, the firm offers tailored solutions in areas like uniform capitalization rules, inventory accounting, research and development credits, and estate planning. Their advisory services also extend to business process improvement, financial modeling, and mergers and acquisitions.

The firm is located on Grant Street in downtown Pittsburgh, situated just a short walk from the Carnegie Library of Allegheny and the Allegheny County Courthouse, approximately 0.1 miles from both the Pittsburgh City-County Building and Ross Street. Its long-standing presence in the Grant Street corridor reflects its deep roots in the city’s professional and civic life.

Sisterson & Co. LLP is recognized for its thorough, well-documented business information and a website that is clearly structured and optimized for search engines, factors that reflect its professionalism and commitment to transparency. The firm’s longevity, technical depth, and consistent client service culture distinguish it as a trusted advisor in Pittsburgh’s accounting landscape.

As a cornerstone of Pittsburgh’s financial community, Sisterson & Co. LLP continues to deliver expert, personalized service to clients navigating complex financial challenges across the region.

Services:

• Audit & Assurance
• Due Diligence/Quality of Earnings
• Field Exams
• Tax Advisory
• Valuations