There is a specific tax strategy available to real estate investors that most property owners have never run, and most never will, despite being structurally entitled to the deductions it produces. The strategy is cost segregation, and its impact on real estate investor tax outcomes is large enough that it has become one of the foundational specialties of AE Tax Advisors.
Cost segregation is the engineering-based reclassification of building components from the standard 27.5-year residential or 39-year commercial depreciation schedules into accelerated MACRS categories, 5-year, 7-year, and 15-year property classes that depreciate dramatically faster. When applied to a real estate investment, cost segregation typically pulls 20% to 40% of the building’s depreciable basis into these accelerated schedules, producing significantly larger deductions in the early years of ownership.
The mechanics matter because real estate investors are otherwise depreciating buildings extremely slowly. A $1 million rental property with $800,000 of depreciable basis under the standard 27.5-year residential schedule produces roughly $29,000 of annual depreciation. The same property with a properly executed cost segregation study might produce $150,000 to $250,000 of Year 1 depreciation when combined with current bonus depreciation rules, a difference that can completely offset the property’s taxable income and even shelter other income for properly structured investors.
The AE Tax Advisors approach to cost segregation is grounded in IRS guidelines and industry standards for engineering-based studies. The firm’s cost segregation work identifies the specific building components that qualify for accelerated treatment, interior finishes, specialized electrical systems, decorative lighting, removable flooring, landscaping,
site improvements, parking surfaces, signage, and assigns each component to the appropriate MACRS class with the documentation required to support the treatment if examined.
The strategy has become significantly more powerful under the One Big Beautiful Bill Act (OBBBA), which made permanent the ability to fully deduct qualifying property components in Year 1 through 100% bonus depreciation. Under the prior phased-down schedule, bonus depreciation was scheduled to decline to zero. Under OBBBA, real estate investors can now permanently combine cost segregation with 100% bonus depreciation, dramatically accelerating the tax benefit of new property acquisitions.
AE Tax Advisors also executes lookback cost segregation studies for properties already in service. Through Form 3115 (Application for Change in Accounting Method), property owners can claim catch-up depreciation for prior years without amending individual returns, capturing depreciation that should have been taken but wasn’t, in a single current-year deduction. This is one of the more underused strategies in real estate tax, and AE Tax Advisors has built specific expertise around the Form 3115 process.
The firm’s advisory team, IRS Enrolled Agents and licensed CPAs operating from Billings, Montana, serving clients in all 50 states, coordinates with engineering consultants to execute the studies and integrates the cost segregation work into the broader tax planning relationship. Every engagement begins with a proprietary 3-Year Tax Lookback that identifies whether prior properties were inadequately depreciated and whether Form 3115 catch-up opportunities exist.
The math is worth running. A real estate investor with $5 million in rental property who has not run cost segregation may be sitting on $200,000 to $500,000 of accelerated depreciation that could be claimed in the current tax year. The cost of the studies is a fraction of the resulting tax benefit, and the work is fully supported under the Internal Revenue Code when executed by qualified professionals.
AE Tax Advisors prices cost segregation studies separately from the firm’s annual $7,800 advisory engagement, based on property type, complexity, and value. The work is fully integrated with the firm’s broader strategic tax planning relationship, which means the cost segregation outcomes connect into entity structure, retirement planning, and multi-state strategy rather than functioning as an isolated deduction.
For real estate investors who have not yet run cost segregation on their existing portfolio, the work is one of the highest-leverage tax conversations available. The AE Tax Advisors team has built specific expertise in this category, and the results clients have produced reflect the depth of that focus.
Disclaimer: This article is for informational and educational purposes only and does not constitute tax, legal, accounting, or financial advice. Tax laws and individual circumstances vary, and potential deductions or savings are not guaranteed. Readers should consult a qualified tax professional regarding their specific situation before implementing any tax strategy.
