Cost Segregation Myths That Are Costing You Money
Cost segregation is one of the most powerful tax strategies available to real estate investors, yet it remains one of the most misunderstood. Myths and misconceptions prevent thousands of property owners from claiming deductions that the IRS has specifically authorized under IRC Section 168.
Here are the most common cost segregation myths and why believing them is costing you money.
Myth 1: Cost Segregation Is Only for Large Commercial Properties
This is probably the most pervasive myth, and it costs residential rental investors the most money. Cost segregation is not limited to large commercial buildings. It applies to any depreciable real property -- residential rentals, multifamily properties, short-term rentals, mixed-use buildings, and yes, commercial properties.
The general rule of thumb is that cost segregation becomes cost-effective for properties with a depreciable basis (purchase price minus land value) above approximately $500,000. For properties above $1 million, the ROI on a cost segregation study is almost always strong. We have seen excellent results on properties as small as $600,000 in basis.
Myth 2: Cost Segregation Is Aggressive or Risky
Cost segregation is not a loophole, gray area, or aggressive position. It is a well-established methodology that the IRS itself has endorsed. The IRS published a Cost Segregation Audit Technique Guide specifically to help revenue agents evaluate cost segregation studies -- not to discourage them, but to ensure they are performed correctly.
When a qualified engineer performs a cost segregation study in accordance with IRS guidelines, the resulting reclassifications are fully supportable under audit. The IRS has never taken the position that cost segregation is inappropriate when properly performed. It is simply the correct application of MACRS depreciation rules under IRC Section 168.
Myth 3: You Have to Amend Prior-Year Returns
This myth prevents many investors from pursuing cost segregation on properties they acquired years ago. They assume they would need to amend multiple prior-year returns, which sounds complicated and expensive.
The reality is much simpler. Under IRS automatic consent procedures (Revenue Procedure 2015-13 and its successors), you file Form 3115 with your current-year return and take a single Section 481(a) adjustment that captures all the missed accelerated depreciation from prior years. No amended returns needed. One form, one year, complete catch-up.
Myth 4: Bonus Depreciation Is Gone, So Cost Segregation Is Not Worth It
While 100% bonus depreciation has been phasing down under the Tax Cuts and Jobs Act, it has not disappeared. As of 2025, 40% bonus depreciation is still available for qualifying property, and the rate in 2026 is 20%. Even without any bonus depreciation, cost segregation still accelerates depreciation from 27.5 or 39 years to 5, 7, or 15 years. The time value of those accelerated deductions remains substantial.
Moreover, Congress has repeatedly discussed extending or restoring bonus depreciation. Cost segregation produces value regardless of the bonus depreciation rate -- the bonus just makes it even more powerful.
Myth 5: My Property Is Too Old for Cost Segregation
There is no age limit on cost segregation. Whether you purchased your property last month or 15 years ago, a cost segregation study can identify reclassifiable components. The Form 3115 catch-up mechanism means that older properties can actually produce larger cumulative adjustments because more years of missed accelerated depreciation have accumulated.
Myth 6: Cost Segregation Just Creates Depreciation Recapture Problems
This concern has some basis but is generally overstated. Yes, accelerated depreciation does create recapture under IRC Section 1250 when you sell the property. But the recapture is taxed at a maximum rate of 25% for real property, while the depreciation deductions save you taxes at your ordinary income rate (potentially 37% federal plus state taxes).
Furthermore, if you hold property long-term, the time value of money makes front-loading deductions and deferring recapture extremely favorable. And if you use a 1031 exchange to defer the gain, recapture is deferred as well.
Myth 7: Any CPA Can Do a Cost Segregation Study
A cost segregation study must be performed by a qualified engineer or architect with specific training in building component classification under IRC Section 168 and the MACRS system. CPAs are not qualified to perform the engineering analysis required. What a qualified tax advisor does is coordinate the study, review the engineer's findings for accuracy and compliance, and implement the results on your tax return.
At AE Tax Advisors, our team handles the entire process from preliminary analysis through implementation, working with qualified cost segregation engineers who meet IRS professional standards.
Stop Believing Myths. Start Saving Money.
If any of these myths have been holding you back from pursuing cost segregation on your properties, the only thing standing between you and significant tax savings is a phone call. Contact AE Tax Advisors at (631) 614-5762 or email team@aetaxadvisors.com. We will perform a complimentary preliminary analysis and tell you exactly how much cost segregation can save you.