CSSI Services

CSSI provides tax-savings services to property owners, real estate investors, businesses, and tax professionals across the United States. Since 2003, the firm has completed more than 65,000 studies, helping clients identify opportunities in federal and state tax incentives. Its services include engineering-based cost segregation studies, which help commercial property owners accelerate depreciation; Section 179D tax deduction studies for qualifying energy-efficient commercial buildings; and research and development tax credit services for companies with eligible activities.

CSSI works with clients in sectors such as manufacturing, technology, software, and engineering, as well as with CPAs and tax advisers seeking specialist support for their clients. The company also offers online calculators to estimate potential savings, along with educational resources, case studies, webinars, and tax insights. Its nationwide team collaborates with clients’ tax professionals and provides documentation to support reported tax positions.

CSSI describes its approach as tailored and collaborative, combining tax expertise with analysis designed to help clients understand and pursue applicable savings opportunities