22+ Years

Industry Experience

50,000+

Studies Completed

$10B+

Client Tax Savings

Expert Tax Incentive Services

Cost Segregation

Accelerate depreciation on your commercial property to reduce federal income taxes and increase cash flow through our engineering-based Cost Segregation analysis.

179D Tax Deduction

Claim up to $5.81 per square foot in tax deductions for energy-efficient commercial buildings through lighting, HVAC, and building envelope improvements.

R&D Tax Credits

Receive dollar-for-dollar tax reductions for your qualifying research and development activities across manufacturing, technology, engineering, and other industries.

Over 50,000 Studies Completed Since 2003

Proven Track Record

Tailored Tax Programs

Nationwide Coverage

Collaborative Approach

Did You Know ?

Explore Tax Savings Insights and Case Studies

Will 100% Bonus Depreciation Return in 2025? Latest Updates and Predictions

Cost Segregation

Will 100% Bonus Depreciation Return in 2025? Latest Updates and Predictions

Learn more

179D Tax Deduction

Energy Investment Credits: What They Are and How They Support Renewable Projects

Learn more
Energy Investment Credits: What They Are and How They Support Renewable Projects

Cost Segregation

How Recent Budget Resolutions Impact Businesses and Taxpayers 

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How Recent Budget Resolutions Impact Businesses and Taxpayers 

Client Reviews

Google Review

Daan D.

Property Owner

Incredible experience working with our CSSI rep. He is very knowledgeable and communicative. He saved us a tremendous amount of money and I highly recommend him and his f …

Star Star Star Star Star 5
6 March 2025
Google Review

David D.

Property Owner

Great experience working with CSSI on my accounting services. Very professional service. 

Star Star Star Star Star 5
1 March 2025
Google Review

Jamie W.

Property and Business Owner

Very happy with the study that CSSI was able to get done for me and would recommend them. 

Star Star Star Star Star 5
3 November 2024
Google Review

John L.

Retail Property Owner

Recently used CSSI for two retail properties of mine. The cost seg studies turned out better than expected. I am a very happy client and will be using them on future stud …

Star Star Star Star Star 5
13 June 2024
Google Review

Michael C.

Property and Business Owner

Enjoyed working with CSSI. Their expertise in cost segregation really helped us. The team is incredibly knowledgeable, professional, and always willing to go the extra mi …

Star Star Star Star Star 5
18 May 2024
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