About Ronald

Ronald Sullivan, Jr. is a tax partner in Marcum’s Farmington, CT office with over 20 years of experience. Ron has a wide range of experience providing tax, accounting and audit services to high-net-worth individuals and closely held businesses in industries such as manufacturing, real estate, construction and professional services. He specializes in providing tax planning and compliance services.

Prior to Joining Marcum, Mr. Sullivan worked at Federman, Lally & Remis and joined Marcum with a 2024 merger.

Professional & Civic Affiliations

  • American Institute of Certified Public Accountants (AICPA)
  • Connecticut Society of Certified Public Accountants (CTCPA), State Taxation Committee
  • Essex Elementary School Parent Teacher Organization, former Treasurer
Practice Focus

Tax Planning

Industry Focus

Real Estate


Master of Science, Accounting
Liberty University

Bachelor of Science, Accounting
Central Connecticut State University