Louis Guay


R&D Tax and Cost Segregation Services

Boca Raton

Louis Guay oversees Kaufman Rossin’s research and development tax and cost segregation service lines. Leveraging his industrial engineering experience, he helps clients qualify for and capture R&D and other specialized tax credits. 

With the R&D tax credit’s recent permanency and application to startups, Louis provides R&D tax services to both established businesses and early stage companies in South Florida’s burgeoning startup scene. He assists clients across several industries, including aerospace, banking, biotechnology, construction, food and beverage, healthcare, manufacturing and technology.

His expertise includes the federal Credit for Increasing Research Activities (aka R&D tax credit) in the U.S. and the Scientific Research & Experimental Development (SR&ED) program in Canada.

As a leader of the firm’s cost segregation practice, Louis manages a specialized team focused on assisting clients in accelerating the depreciation of portions of their real estate investments. Louis and his team conduct engineering-based cost segregation studies to help provide significant tax savings for real estate developers and investors constructing, renovating or buying commercial real estate.

Before joining Kaufman Rossin in 2014, Louis was a senior manager at a Big Four firm. He has authored articles about the R&D tax credit in news and trade publications, including The Miami Herald and Small Biz Daily. He is bilingual in English and French.


  • Bachelor of Science, Industrial Engineering, Polytechnique of Montreal,
  • Master of Business Administration, International Business, Florida International University,