What is cost segregation in commercial real estate?

Cost segregation is an engineering-based study that reclassifies portions of a commercial property from 39-year depreciation into shorter 5-, 7-, and 15-year asset categories. This accelerates depreciation deductions and typically front-loads 20–30% of the purchase price into the first year.

How does bonus depreciation work with cost segregation?

Bonus depreciation lets you deduct 100% of qualifying short-life assets (5-, 7-, and 15-year property) in the year of acquisition. Combined with a cost segregation study, bonus depreciation can shelter substantial taxable income in year one. The bonus rate phases down each year — check current IRS schedules.

When does cost segregation make financial sense?

Cost segregation typically pays for itself when the property is worth $500K+ and the owner has substantial taxable income to shelter. Studies cost $5K–$15K and generate first-year deductions of $200K+ on a $1M property.

What is depreciation recapture and how does it affect cost segregation?

When you sell, accumulated depreciation is recaptured and taxed as ordinary income (up to 25% for real property). However, a 1031 exchange defers all recapture, and the time-value benefit of accelerated deductions usually outweighs the eventual recapture cost.

Can I use cost segregation on a property I already own?

Yes. A look-back study can be performed on properties owned for years, and the missed depreciation is captured via Form 3115 (Application for Change in Accounting Method) without needing to amend prior tax returns. This creates a single large catch-up deduction in the current year.

Investor Tools

Cost Segregation ROI Calculator

Estimate your first-year tax savings from accelerated depreciation on commercial real estate. Cost segregation studies reclassify building components into 5-year and 15-year depreciation schedules — which may deliver significant first-year tax savings depending on property-specific factors and tax situation.

Property Inputs

Purchase Price

Land Percentage(typical 15-25%)

Property TypeAcquisition YearMarginal Tax Rate(federal + state combined)

Estimated First-Year Tax Savings

$43,170

Net of estimated $5,000 cost seg study cost: $38,170 (8.6x ROI)

Basis Allocation

Land$400,000

Building$1,600,000

5-Year Reclassification (Personal Property)$240,000

15-Year Reclassification (Land Improvements)$160,000

Remaining Building (39-yr or 27.5-yr)$1,200,000

Year 1 Depreciation

Without Cost Segregation$41,026

With Cost Segregation$157,703

Accelerated Deduction$116,677

@ 37% marginal rate×

Estimated Tax Savings$43,170

What Is Cost Segregation?

Cost segregation is an IRS-approved tax strategy that reclassifies components of a commercial property from the default 39-year (27.5-year for multifamily) straight-line depreciation schedule into accelerated 5-year and 15-year MACRS schedules. The result: massive first-year deductions that significantly reduce taxable income.

A licensed engineering firm conducts the study, typically identifying 20-40% of the building value as reclassifiable. For a $2M NNN property, that can mean $300K-$600K of accelerated deductions in year one.

5-Year Property

Personal property components that can be reclassified from the building:

• Decorative lighting, fixtures
• Removable carpeting & flooring
• Specialty electrical (process equipment)
• Specialty plumbing (commercial kitchens)
• Cabinetry, millwork
• Furniture & equipment

15-Year Property

Land improvements that can be depreciated over 15 years:

• Paving & parking lots
• Site lighting
• Landscaping & irrigation
• Signage
• Site drainage
• Fencing & walls

39-Year Property

Structural components remaining on the standard schedule:

• Foundation & structure
• Roof & walls
• HVAC (primary systems)
• Primary electrical
• Primary plumbing
• Elevators

Who Benefits Most From Cost Segregation?

•Real Estate Professionals (IRS definition) — can offset passive losses against active income
•High-income active investors with passive income from other properties
•Owners of $500K+ commercial properties (study ROI breaks even around this threshold)
•Recent buyers who can apply cost seg retroactively (catch-up depreciation)

2026 Bonus Depreciation Status

Under the 2017 Tax Cuts and Jobs Act, bonus depreciation is phasing out:

2022

100%

2023

80%

2024

60%

2025

40%

2026

20%

2027+

Even without bonus depreciation, cost segregation provides significant value through accelerated 5-year and 15-year MACRS schedules. Congressional proposals to restore 100% bonus depreciation are ongoing — consult your CPA for current legislation status.

Disclaimer: This calculator provides estimates for educational purposes only. Actual cost segregation results depend on a detailed engineering study, property-specific components, and current tax law. Reclassification percentages shown are typical ranges and vary significantly by property. Not tax advice. Consult a qualified CPA and cost segregation specialist before making decisions based on these estimates. MaxLife Commercial does not provide tax or legal advice.

Planning a CRE Acquisition?

MaxLife Commercial sources commercial real estate across Florida with strong cost segregation potential. We work with qualified CPAs and cost seg specialists to help clients maximize tax benefits.

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