For most owners of income property with more than $500,000 of depreciable basis who can actually use the deduction, yes, comfortably. For a passive investor with a $420,000 condo, a W-2 job, and a two-year hold, no. The difference is not the property. It is five questions you can answer in ten minutes.
The short answer
- Test 1, basis. Below roughly $500,000 of depreciable basis, the economics of an engineering study usually stop working.
- Test 2, usability. A deduction you cannot deploy this year is worth far less, and this test disqualifies more owners than any other.
- Test 3, rate direction. You trade a deduction at today's rate for recapture at tomorrow's.
- Tests 4 and 5, hold period and asset mix. Short holds and plain buildings both shrink the payoff.
- Cost segregation moves deductions forward, it does not create them, so the honest measure is present value minus the fee, not headline first-year savings.
The Five-Test Screen
Test 1: Is your depreciable basis above roughly $500,000?
Start with basis, not purchase price. Land never depreciates and comes out first, and it commonly runs 15% to 30% of a purchase price. A $700,000 building on a $250,000 lot has $450,000 of basis, not $700,000.
Below roughly $500,000, a $2,500 to $6,500 fee consumes too much of the benefit. That is economics, not law. The edges are mapped in the minimum property value for cost segregation.
Test 2: Can you actually use the deduction this year?
This decides most cases, and it has nothing to do with your building. Under §469, rental losses are passive and offset only passive income. For a W-2 earner with one rental, a $300,000 accelerated loss does not touch salary tax. It suspends.
You pass if any of these is true:
- You or your spouse qualify for Real Estate Professional Status: more than 750 hours in real property trades or businesses, more than half of all personal services, plus material participation.
- The property is a short-term rental averaging seven days or less per stay and you materially participate. It is not a rental activity under the regulations, so REPS is not required.
- You have other passive income, or the building is non-passive to you as operator.
Then check the ceiling: §461(l) caps 2026 net business losses at $256,000 single / $512,000 married filing jointly. See the passive activity loss rules.
Test 3: What is your marginal rate now versus later?
You deduct at today's ordinary rate. On sale, reclassified §1245 property recaptures as ordinary income at rates up to 37%, and the structure is taxed at up to 25% as unrecaptured §1250 gain. At 37% now with a lower bracket at exit, the arbitrage adds permanent value. Deducting at 22% and recapturing at 37% does not.
Test 4: How long will you hold?
Deferral needs runway. Ten years of compounding on deferred tax is meaningful; two years is not. Under three years, be skeptical unless a §1031 exchange is planned, which defers recapture, or an estate §1014 step-up will eliminate it. See cost segregation when selling soon.
Test 5: Does the property type carry enough short-life content?
Typical reclassification is 20% to 30% of basis. Restaurants, hotels, medical offices, car washes, and self-storage often reach 30% to 45%. Plain warehouses and office shells run 10% to 18%. A $600,000-basis dental office and a $600,000-basis warehouse are different decisions at the same price.
The ROI Math, Explicitly
Example: a $2,000,000-basis retail strip center A 24% reclassification moves $480,000 into 5- and 15-year property, all bonus-eligible at 100%. Combined tax rate 35%, study fee $8,500. (The additional deduction nets out a simplified full year of 39-year depreciation on those same dollars; MACRS applies the mid-month convention to real property, so your actual first year turns on the month you placed the building in service.)
| Amount | |
|---|---|
| Additional year-one deduction | $467,692 |
| Year-one cash tax reduction at 35% | $163,692 |
| Present value of deductions given up later (8% discount) | ($49,857) |
| Net present value of the acceleration | ~$113,800 |
| Less study fee | ($8,500) |
| Benefit-to-fee ratio | ~13:1 |
Your result depends on your tax rate and whether you can use passive losses.
Note what the discount line does: the headline "$163,692 saved" overstates the real economics by about a third. Ask a provider for the discounted number.
Three Properties, Three Answers
| Property A | Property B | Property C | |
|---|---|---|---|
| Asset | $2,600,000 medical office | $900,000 rental portfolio | $420,000 condo |
| Depreciable basis | $2,200,000 | $700,000 | $340,000 |
| Can use loss now? | Yes, spouse has REPS | No passive income | No |
| Hold period | 15+ years | 7 years | 2 years |
| Reclassification / fee | 32% / $9,000 | 18% / $5,500 | 12% / $3,500 |
| Verdict | Clear yes | Marginal | No |
Property B is the interesting one. It passes on basis, hold, and asset mix but fails usability, so the benefit is a suspended loss that frees up on sale or against later passive income. Real, but delayed.
When the Answer Is No
We would rather tell you now than after you have paid.
You cannot use the loss and likely never will. A retiree with one passive rental and no plan to sell is accelerating deductions into a suspension account indefinitely.
You are selling within a year or two with no §1031 planned. You convert future exposure into near-term ordinary recapture before the deferral compounds.
Your basis is small and the property is plain. A $340,000-basis townhome with no site work might reclassify 11%. A $3,500 fee against $37,000 of accelerated cost is not defensible.
This is a low-income year, or the property is nearly fully depreciated. The arbitrage runs backwards, or there is little left to accelerate.
One nuance: a study on a prior-year property is a look-back, caught up on Form 3115 with no amended returns, and the bonus rate is fixed by the original placed-in-service date. Waiting a year is cheap. Fee ranges are in what a study costs and the mechanics in what cost segregation is.
Frequently Asked Questions
What is a realistic ROI on a cost segregation study?
On a property that passes all five tests, a benefit-to-fee ratio of 8:1 to 20:1 on a present-value basis is reasonable, with the upper end on high-content property types. Ratios advertised at 30:1 are usually undiscounted first-year gross savings compared with the fee.
Should I do a study if my losses will just be suspended?
Sometimes. Suspended passive losses do not expire; they carry forward and free up against future passive income, or in full when you dispose of the activity in a fully taxable sale. Discount the benefit for the wait.
Is it too late if I bought the property years ago?
No. A look-back study can be performed on property placed in service in any prior year, with missed depreciation caught up on Form 3115 as a §481(a) adjustment taken entirely in the year of change. The bonus percentage follows the original placed-in-service year.
Find Out in 24 Hours Whether a Study Pays for Itself
Not every property justifies a study, and we will tell you when yours doesn't. Send Precision Cost Segregation the address, purchase price, closing date, and your rough tax rate, and we will come back with a modeled reclassification range and an estimated first-year benefit at no cost.
This article is provided by Precision Cost Segregation for general educational purposes and does not constitute tax, legal, or accounting advice. Tax outcomes depend on your specific facts, your tax rate, your passive activity position, and your entity structure. Figures shown are illustrative. Consult your CPA or tax advisor before acting, and engage a qualified professional to perform any cost segregation study. Information is current as of publication.
This article is general information, not tax or legal advice. Depreciation outcomes depend on your facts, elections, and current law — consult your CPA before acting. © 2026 Precision Cost Segregation.