Wondering if Cost Segregation is worth it for your property? Click here to see your potential tax savings in under 1 minute with our free calculator

Our Services

A Platform Designed to Unlock Savings

Over 60,000 Studies Completed Since 2003

Engineering-Based Expertise

60,000+ 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. 

Calculate Your Tax Savings

Please note that actual results may vary based on your property’s unique characteristics, acquisition date, and tax situation. The calculator assumes current tax laws and does not constitute tax advice.

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Estimated Tax Savings

Conservative Estimate

Accelerated Depreciation Deduction The total amount of depreciation deductions you would receive when using cost segregation, which reclassifies certain building components into shorter recovery periods for faster tax benefits.

Standard Straight-Line Depreciation Deduction The total amount of depreciation deductions you would receive under the standard straight-line method, typically spreading deductions evenly over 27.5 or 39 years for real property.

High-End Estimate

Accelerated Depreciation Deduction The total amount of depreciation deductions you would receive when using cost segregation, which reclassifies certain building components into shorter recovery periods for faster tax benefits..

Standard Straight-Line Depreciation Deduction The total amount of depreciation deductions you would receive under the standard straight-line method, typically spreading deductions evenly over 27.5 or 39 years for real property.

Your results show estimated first-year tax savings based on typical properties similar to yours. The Conservative Estimate shows what most property owners like you can expect at minimum, while the High-End Estimate shows what’s possible with a thorough professional analysis. These numbers represent actual cash you could save on taxes. For a personalized assessment that accounts for your property’s specific features, continue with our no-cost analysis request.

Download Estimated Savings Summary
Download Summary

How R&D Tax Credits Work

The Process is Simple:

1

Select your industry for accurate wage qualification rates

2

Enter your qualifying Research & Development expenses and gross receipts

3

Our calculator runs both Regular and Alternative Simplified Credit methods

4

See instant estimates and discover which method maximizes your benefit

What You’ll Need

Industry & Company Info

Your industry type and R&D history help us optimize your calculation method and apply the correct wage qualification rates.

Supplies & Materials

Raw materials, prototypes, and supplies consumed during research, experimentation, and development processes.

Contract Research

Amounts paid to third-party contractors conducting qualified research on your behalf (65% qualifies for the credit).

Salaries & Wages

Total compensation for all employees performing, supervising, or supporting qualified research activities.

Maximize Your R&D credits
Most companies miss 40% of their eligible R&D credits. Our detailed analysis examines all your technical activities, employee roles, and project expenses to maximize your savings. Plus, we can help you claim up to 3 years of past credits you may have missed.
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Estimate Your 179D Tax Deduction

Find out how much your energy-efficient building project could qualify for in federal tax deductions — up to $5.81 per sq ft.

How It Works:

1

Select your building type and project type, then enter your construction start date and placed-in-service date

2

Enter your total project cost and gross square footage

3

See your estimated 179D deduction range instantly, based on the minimum and maximum rates that could apply to your project depending on your building’s energy performance.

What You’ll Need

Building & Project Info

Your building type and whether the project is new construction or a renovation help determine your eligibility and applicable deduction rate.

Construction Timeline

Your construction start date and placed-in-service date confirm whether your project falls within the qualifying window.

Project Cost & Square Footage

The 179D deduction is calculated on a per-square-foot basis, so your total project cost and gross square footage are the primary drivers of your estimated deduction.

Does Not Qualify

Residential buildings must be 4+ stories to qualify for the 179D deduction.

i.e. Architect, Engineer, Design-Build Contractor

Does Not Qualify

For government buildings, only the designer primarily responsible for the technical design drawings can claim the 179D deduction.

Qualifies for Bonus Deduction Rate

Construction started before January 2023 and placed in service in 2023 or later automatically qualifies for the higher deduction rate without meeting prevailing wage and apprenticeship requirements.

Meeting prevailing wage & apprenticeship requirements qualifies for the higher deduction rate (approximately 5x the base rate).

Your estimate will use the standard deduction rate. Contact CSSI to determine if you qualify for the bonus rate.

Climate controlled buildings include HVAC systems and insulation.

Non-climate controlled buildings typically qualify for lighting deductions only, resulting in approximately half the maximum deduction.
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Building is 40,000+ square feet

Minimum square footage requirement for 179D eligibility.

Please confirm the building meets the minimum 40,000 sq ft requirement to proceed.
Estimated 179D Tax Deduction Result

Rate Applied
Rate Type
Tax Year
Building Type
Project Type
Gross Square Footage
This estimate is based on your building's square footage and the applicable 179D deduction rate for your project type and tax year. Actual results depend on energy modeling across your lighting, HVAC, and building envelope systems. A full 179D study confirms which systems qualify and identifies the maximum deduction available for your project.
Estimated 179D Tax Deduction Result

Rate Applied
Rate Type
Tax Year
Building Type
Project Type
Gross Square Footage
This estimate is based on your building's square footage and the applicable 179D deduction rate for your project type and tax year. Actual results depend on energy modeling across your lighting, HVAC, and building envelope systems. A full 179D study confirms which systems qualify and identifies the maximum deduction available for your project.

Get the Most Out of Your 179D Deduction

The 179D deduction can reach up to $5.81 per sq ft, but capturing the full benefit requires a certified energy study. Our team will analyze your building systems and manage the documentation from start to finish.

Free 179D Analysis
Download Summary

This is an estimate only. Actual deduction amounts require a Section 179D certification study to verify energy efficiency compliance.

Joshua Jacobs

Senior Account Executive

Florida

Joshua Jacobs is a Senior Account Executive for CSSI, bringing over seven years of experience in both commercial and residential real estate, as well as a background in financial services. His comprehensive knowledge of the industry allows him to deliver exceptional service to real estate owners, brokers, and lenders by understanding their unique needs and priorities. A graduate of Florida State University with a Bachelor of Science in Economics and Political Science, Joshua enjoys spending time with family and friends, as well as playing golf and watching college football in his free time.

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Resources

Learn more about what CSSI can do for you.

We’re committed to helping you take full advantage of cost segregation, 179D and R&D Tax Credits.

Learn More About What CSSI Can Do for You

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

Learn More
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