Sean Haggard, CPA

Associate Principal



Sean Haggard is an associate principal in the Tax Department. He provides tax and advisory services to clients ranging from start-up to multi-state to international operations. Prior to joining Kaufman Rossin, he worked for the California Franchise Tax Board as an auditor. As a former Halliburton Industries instrument technician, Sean’s electrical engineering and process manufacturing background coupled with his tax expertise in research credits enables him to uniquely advise clients on the complexities and application of the research credit to their business models.  

Sean has a focused expertise serving manufacturing, technology, and life science clients. He has more than 15 years of experience performing R&D credit analysis, audit defense, and assisting companies in qualifying and capturing research credits. In addition, he brings expertise to multi-state businesses with nexus reporting challenges inherent in SaaS and “cloud-based” business models.

Sean is a Certified Public Accountant in Florida, California, and Massachusetts. He is member of the American Institute of Certified Public Accountants, Florida Institute of Certified Public Accountants, and Massachusetts Society of Certified Public Accountants.


  • Bachelor of Science, Accounting, California State University,
  • Bachelor of Science, Business, California State University,