PKF O'Connor Davies of Harrison

PKF O'Connor Davies of Harrison is an accountant in Harrison, NY. The firm operates as a relationship-centered accounting and advisory practice, serving clients with services that span accounting and assurance, tax, advisory, technology and cybersecurity, private client services, and outsourced services. Its accounting and assurance work includes agreed-upon procedures, audits, reviews and compilations, employee benefit plan audits, endowment fund accounting, fund administration, peer review services, public company services, public sector audits and compliance, and system and organizational control reporting. The firm has performed audits for organizations of virtually every size, in every sector, industry and specialty since 1891, delivering assurance services for more than 125 years. It holds a rating of 4.80 based on customer reviews.

The firm's approach to audits, reviews and compilations addresses each client's unique needs to provide a clear framework for the audit process, with engagement teams including partners and professionals who work in concert to ensure customized reporting. Its Employee Benefit Services Practice has dedicated partners and staff with expertise in both public and private industry sectors, addressing plan compliance, disclosure and reporting requirements. The cybersecurity practice offers CMMC assessment services, penetration testing, and digital forensics, with specialists providing strategies tailored to the size of the business. The firm also publishes thought leadership content, including articles on IRS penalty relief, New York agricultural tariff relief, and state and local tax updates, and participates in events such as the Orange County Government Health Equities Summit and the 2026 M&A and Capitalization Symposium.

PKF O'Connor Davies of Harrison is located at 500 Mamaroneck Ave.

The firm is known for its positive customer rating and its long history of providing assurance services across multiple sectors. Its 4.80 rating reflects the experience of the customers who have reviewed it.

PKF O'Connor Davies of Harrison brings more than 125 years of audit experience to the Harrison, NY accounting community, serving organizations of virtually every size and sector.