Is Cost Segregation Worth It? Compare Usable Tax Benefit and Costs
Evaluate cost segregation using incremental usable deductions, tax rates, study and filing fees, holding period and sale effects. Includes a hypothetical example.
Planning questions and records
Cost segregation can move deductions into earlier years, but the useful comparison is after-tax cash flow after fees and limitations. A study's deduction-to-fee ratio is not its return on investment, and a property-value cutoff cannot establish that a study is worth it.
Compare the incremental deduction with the current schedule
Start with depreciable basis, excluding land, and the acquisition and placed-in-service dates. Compare the supported asset classifications against the depreciation you would otherwise claim. Use only the additional deduction in the scenario, rather than treating all first-year depreciation as new savings.
IRS Publication 946 describes the restored 100% allowance for certain qualifying property acquired and placed in service after January 19, 2025. The allowance depends on the assets and acquisition rules; a study does not make land or an ordinary building shell eligible. Elections and state conformity can change the comparison.
Check whether the owner can use the deduction
A deduction that is limited or suspended may produce a benefit in a later year rather than current cash savings. Review entity basis, at-risk rules, passive-activity treatment, personal use and other loss limitations with the preparer. Material participation alone does not clear every limit. See Publication 925 and the STR planning sequence.
A hypothetical calculation, with assumptions visible
Assume a study supports an additional $50,000 federal deduction compared with the existing schedule, the entire amount is usable in the same year, and the affected income is taxed at a 30% federal marginal rate. The simplified first-year federal reduction is $15,000. If the study and incremental filing work together cost $4,000, the simplified first-year net benefit is $11,000.
This is an illustration, not a client result, a quote or a lifetime return calculation. It ignores state treatment, rate interactions, financing, later deductions displaced and sale consequences. If the entire deduction is suspended, the current-year federal reduction in this example is zero; the potential later benefit needs a separate forecast.
Model the holding period and sale
Accelerating depreciation generally reduces future depreciation and adjusted basis. A sale may bring depreciation-related gain and recapture, depending on the asset class, sale proceeds and applicable rules. Compare planned and earlier-than-planned sale dates. An exchange should not be assumed to defer every reclassified component.
For an older rental, reconcile depreciation already claimed and determine the correct correction route. Form 3115 eligibility, timing and required filings are fact-specific; neither an amendment nor an accounting-method change fits every situation. See catch-up depreciation planning and the IRS Form 3115 instructions.
Compare total scope and fees
Published standard AE study pricing is $1 per square foot, with a $2,000 minimum. Confirm the property's measured area, complexity, report deliverables, correction work and return preparation in the proposal. The study fee and advisory engagement are separate.
The published standard advisory engagement is $7,800, paid in two $3,900 installments, 30 days apart. It has no required recurring annual planning fee. Tax returns, amendments, cost segregation and additional services are separately scoped and priced. Support and audit-defense coverage depend on the period and terms in your signed agreement; this is not unlimited future planning or free annual filing. See current pricing and scope before comparing proposals.
When to pause before ordering a study
- Basis or prior depreciation records are incomplete.
- Most potential deductions would be suspended without a credible use timeline.
- A near-term sale or personal-use change has not been modeled.
- Incremental study and filing costs outweigh the forecast benefit.
Use the scenario calculator to organize assumptions, the holding-period tool to compare timing, and the document checklist to prepare a review. Calculator outputs still require property-specific confirmation.
Frequently Asked Questions
Is a depreciation deduction the same as tax savings?
No. A deduction reduces taxable income. Estimate the incremental deduction usable in the relevant year, apply the relevant tax rates, and account for limits, fees and future sale effects. A $50,000 deduction does not mean $50,000 of cash savings.
Is cost segregation always worth it above a property-value threshold?
No. Basis, qualifying components, deduction usability, study and filing costs, holding period and disposition consequences all affect value. Property price alone does not establish a positive return.
Does 100% bonus depreciation apply to every property in 2026?
No. Publication 946 describes the restored 100% allowance for certain qualified property acquired and placed in service after January 19, 2025. Acquisition dates, asset eligibility, related-party rules and elections matter. Land and an ordinary building shell do not become bonus-eligible merely because a study is performed.
What are AE's study and advisory prices?
Published standard study pricing is $1 per square foot with a $2,000 minimum. The standard $7,800 advisory engagement is separately priced, with two $3,900 payments 30 days apart and no required recurring annual planning fee. Confirm study deliverables, filing work and additional fees in the written scope.
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