Cost Segregation Estimate
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Estimate your cost segregation tax savings
in 30 seconds.

See your likely first-year depreciation benefit before you order a full study.

  • Property-type ranges from real outcomes
  • First-year acceleration with current bonus % built in
  • Conservative / typical / aggressive bands
22–35%typical reclass to 5/15-yr
< 1 hrfull report turnaround
$495+qualifying residential
Step 1 Tell us about the property
  • 40+ page IRS-defensible reports
  • CPA-Ready guarantee
  • Delivered under 1 hour
  • From $495

We don't store your answers. Estimate uses property-type ranges aligned with the IRS Audit Techniques Guide and MACRS class lives.

STR
Short-term rental owners
STR owners usually pull the biggest first-year deduction. The 7-day rule plus material participation can offset W-2 income under IRC §469.
SFR
Single-family landlords
Already own it? File Form 3115 and claim every prior year of missed depreciation in one catch-up. No amended returns.
MF / Commercial
Multifamily & commercial owners
More units, more shared site work, parking, and finishes landing in 5- and 15-year buckets. Studies from $1,395.
Why estimates from here are usable

Built on the same methodology as a real study.

01
CPA-ready reports
Formatted for direct hand-off to your accountant.
02
IRS Audit Techniques Guide aligned
We follow the ATG so your study holds up under examination.
03
Uses RSMeans cost data
Industry-standard component pricing across regions.
04
MACRS class-life methodology
5-, 15-, 27.5-, and 39-year lives properly assigned.
05
Delivered in under 1 hour
No weeks of back-and-forth. You order, we ship.
06
From $495 — qualifying residential
Flat pricing. No surprise add-ons.
What affects your estimate

Six things move your number. You can answer most of them in a sentence.

01
Property type
STRs, multifamily, and commercial reclassify at very different rates.
02
Land allocation
Land isn't depreciable. Higher land % = lower benefit.
03
Building quality
Class A finishes shift more value into shorter-life buckets.
04
STR furnishings (FF&E)
Furniture, electronics, and decor are typically 5-year property.
05
Bonus depreciation
100% bonus restored permanently for 2025+ under OBBBA. Placed-in-service date matters.
06
Bracket & passive rules
Real estate professional status and the 7-day rule change what you can offset.
Why is this only an estimate?

This calculator runs property-type ranges from real cost segregation outcomes. A full study walks your actual components, finishes, and IRS class lives. Different property, different number. See the IRS-aligned methodology behind the engine, or view a sample 40+ page report.

Turn this estimate into a full report
How it works

How does a cost segregation estimate work?

A cost segregation estimate projects how much of a property's depreciable basis can move from 27.5- or 39-year structural life into 5- and 15-year MACRS classes, and what that does to your first-year tax bill. Across asset types, 20–35% of basis usually shifts into shorter lives. STRs reclassify highest (~35%) thanks to furniture, fixtures, and equipment. Raw single-family rentals come in lowest (~23%). The One Big Beautiful Bill Act (July 2025) permanently restored 100% bonus depreciation, so every reclassified 5-, 7-, and 15-year component can be deducted in full in year one. We return conservative, typical, and aggressive bands using property-type ranges aligned with the IRS Audit Techniques Guide and Rev. Proc. 87-56. Estimates land within ±15% of a full engineered study about 70% of the time.

FAQ

Seven honest answers.

Estimates use property-type ranges from real cost segregation outcomes. Directionally useful. Usually within ±15% of a typical engineered result. Your CPA still files off the full study, which models your actual components and finishes — the side-by-side review of how cost-seg firms approach reclassification shows how much the methodology varies between firms.
Across asset types, 20–35% of depreciable basis moves into 5- and 15-year lives. Short-term rentals and certain commercial sub-types run higher. Raw single-family rentals run lower.
Sometimes. Real estate professional status (IRC §469(c)(7), 750+ hours), the short-term rental 7-day rule with material participation, and grouping elections can convert losses into ones that offset active income. Discuss with your CPA before placing a property in service.
Yes. They file the depreciation, claim Form 3115 catch-up where applicable, and confirm passive-loss treatment. The cost seg study is engineering work. The CPA puts it on your return.
No. This is a 30-second estimate. A full study delivers a CPA-ready 40+ page report with component-level pricing, photographs, and class-life justifications you can stand behind in an audit. Full studies range from $495 to $15,000 across the market — the 2026 firm-by-firm pricing matrix shows the spread.
You upload purchase docs, photos, and square footage. Cost Seg Smart engineers and delivers the report in under an hour. Your CPA files it.
Yes. The One Big Beautiful Bill Act (signed July 2025) permanently restored 100% bonus depreciation for qualifying property placed in service after January 19, 2025. All 5-, 7-, and 15-year components can be fully deducted in year one.
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Cost Seg Smart produces CPA-ready cost segregation reports in under one hour.

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Qualifying residential from $495

Estimate, not advice. This calculator is for general informational purposes only and does not constitute tax, legal, accounting, or financial advice. Actual results depend on basis, land allocation, placed-in-service date, property use, passive activity rules under IRC §469, and CPA review. Consult a qualified tax professional before relying on any figures. The calculator and operator make no warranty, express or implied, as to the accuracy of estimates, and accept no liability for decisions made in reliance on them.

Affiliate disclosure. Cost Segregation Estimate is operated by Cost Seg Smart LLC. Links to "full report" providers route to costsegsmart.com, an affiliated property. We are not an independent comparison site.