Why don't most CPAs recommend cost segregation?

Five main reasons: (1) CPAs lack engineering expertise required for the studies, (2) Cost segregation complicates their workflow with multiple depreciation schedules, (3) Risk aversion makes them default to simpler approaches, (4) Most CPAs are generalists who don't specialize in real estate, and (5) Referring clients to a third-party firm means admitting a gap in their services.

Should I switch CPAs if mine doesn't know about cost segregation?

Not necessarily. A CPA who is great at compliance but unfamiliar with cost segregation can still implement the study results once provided. What matters is their willingness to learn and properly file the depreciation schedules. Bring them the study and the provider's instructions — most competent CPAs can implement it.

How do I bring up cost segregation with my CPA?

Start with a simple question: 'Have you evaluated whether cost segregation would benefit my rental properties?' Share the estimated savings from a free calculator. If they dismiss it without analysis, that is a red flag. If they are open to learning, provide them with the IRS Cost Segregation Audit Techniques Guide as a reference.

Why Your CPA Probably Hasn't Mentioned Cost Segregation (And What to Do About It)

If you own rental property and your CPA never mentioned cost segregation, you are not alone. In my experience working with thousands of property owners, fewer than 15% had a CPA who proactively recommended it — even when it would have saved $30,000 to $200,000+ in taxes. This is not because your CPA is incompetent. It is because of how the accounting industry is structured, how CPAs are trained, and what they are incentivized to do. Understanding why is the first step to making sure you are not leaving money on the table.

The 5 Structural Reasons

Reason 1: They Cannot Do Cost Segregation

Cost segregation requires engineering expertise, not accounting expertise. The IRS ATG states studies should involve professionals with construction or engineering backgrounds. Most CPAs have no engineering training, cannot perform the physical component analysis, and would need to refer you to a third-party firm. Referring means admitting a gap — so many simply do not bring it up.

Reason 2: It Complicates Their Workflow

Standard straight-line depreciation is one entry, one schedule, one calculation per property per year. Cost segregation creates multiple depreciation schedules (5-year, 7-year, 15-year, 27.5/39-year), bonus depreciation elections, potential Form 3115 filings, and more complex Schedule E reporting. For a CPA billing fixed fees, this is more work for the same money.

Reason 3: Risk Aversion Is the Default

CPAs are trained to be conservative — generally a good thing. But conservatism has a cost: unrealized tax savings. The perception that cost segregation is "aggressive" is outdated. It is engineering-based asset reclassification backed by decades of case law, explicitly addressed in the IRS's own Audit Techniques Guide. Foundational cases like Hospital Corporation of America v. Commissioner and Whiteco Industries v. Commissioner date back decades.

Reason 4: They Are Generalists

Most CPA firms serve a general client base. Real estate-specific strategies — cost segregation, partial asset dispositions, the STR loophole, 1031 exchanges — require specialist knowledge that generalists do not invest in developing.

Reason 5: No Financial Incentive to Recommend It

Unlike a financial advisor who earns commission on products they sell, most CPAs earn the same fee regardless of whether they recommend cost segregation. There is no upside to the recommendation, but there is a perceived downside: more complexity, potential questions, and the need to involve a third party.

What to Do About It

Start the conversation yourself. Ask: "Have you evaluated whether cost segregation would benefit my rental properties?" Use our free calculator to get an estimate first. If your CPA dismisses cost segregation without analysis, consider getting a second opinion from a real estate-focused CPA. If they are open but unfamiliar, provide them with the study results and let the cost segregation provider communicate directly with them. Most competent CPAs can implement a well-prepared study even if they did not initiate it. For our guide written specifically for CPAs, see our CPA guide to cost segregation. For an in-depth analysis of why CPAs overlook cost segregation, see Overline's analysis of why CPAs overlook cost segregation.