Our Services

A Platform Designed to Unlock Savings

Over 45,000 Studies Completed Since 2003

Engineering-Based Expertise

45,000+ studies since 2003, expertly navigating complex tax regulations.

Multiple Tax Solutions

Our expertise spans cost segregation, 179D energy efficiency deduction, R&D credits, and sustainable building technologies to maximize your tax savings.  

National Coverage 

Our nationwide network of professionals provides local expertise while delivering consistent, high-quality results across all 50 states. 

Tax Professional Partnerships 

We collaborate with CPAs and tax advisors to ensure timely, compliant, and maximum tax benefits for their clients. 

CSSI is America's leading provider of engineering-based tax solutions. We partner with property owners and their tax professionals to maximize tax benefits and increase cash flow through accurate, compliant studies. Our proven methodology has never triggered an IRS audit, and our nationwide team of experts consistently delivers results that transform complex tax regulations into tangible financial benefits for our clients. 

Don Little

National Account Executive

Texas

With a diverse career spanning over four decades, Don has held significant sales roles at Owens-Illinois, Colgate-Palmolive, and Kimberly Clark Corporation, before becoming the owner of Advanced Credit Technology, Inc. in San Antonio and currently managing Don Little Investments, LLC in Oak Point, Texas. A graduate of San Antonio College, he takes pride in being married for 37 years and is a devoted father to two daughters and a grandfather to three grandchildren. In his free time, Don enjoys spending quality moments with his granddaughters and grandson.

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We’ll deliver a complete assessment of potential savings in as little as two business days.


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Learn more about what CSSI can do for you.

We're committed to helping you take full advantage of cost segregation, 179D, and GreenZip technology.

Learn More About What CSSI Can Do for You

We’re committed to helping you take full advantage of Cost Segregation, 179D, R&D Tax Credits, and Green Zip technology.

Learn More