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USA Tax Glossary
Cost segregation is an analysis that separates parts of real estate into components with different depreciation treatment, often to identify shorter-lived property within a larger building acquisition or improvement.
Investor Context
Real estate investors evaluate cost segregation when accelerated deductions may fit the broader tax plan. The tax result depends on property facts, study quality, income context, passive activity rules, and future sale planning.
Why It Matters
It may change the timing of depreciation deductions.
It can interact with bonus depreciation and recapture exposure.
The IRS has an Audit Technique Guide for examiners evaluating cost segregation studies.
Records To Prepare
Purchase closing statement and appraisal records
Construction or renovation invoices
Engineering or cost segregation study, if performed
Placed-in-service dates and property use details
Common Caution
Cost segregation is not a magic deduction. It changes timing and can affect future gain or recapture; the study and tax position need support.
Direct Answers
The IRS publishes a Cost Segregation Audit Technique Guide for examiners, which is why study quality and documentation matter.
No. The decision depends on property size, asset mix, tax profile, passive activity limitations, holding period, and study cost.
Official IRS Reference
IRS: Cost Segregation Audit Technique GuideRelated Terms
Bonus depreciation is an additional first-year depreciation deduction for eligible property.
Depreciation is the annual deduction that lets a taxpayer recover the cost or other basis of business or income-producing property over a number of years.
A passive activity loss is a loss from passive activities that may be limited under federal tax rules. Rental activities are generally treated as passive unless an exception applies.
