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

See your likely first-year depreciation benefit — before ordering 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
Often see the largest first-year benefit. The 7-day rule + material participation can offset W-2 income under IRC §469.
SFR
Single-family landlords
Already own it? Form 3115 lets you claim missed depreciation from prior years in a single catch-up — no amended returns.
MF / Commercial
Multifamily & commercial owners
More units means more shared site work, parking, and finishes that move into 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
Methodology mirrors the ATG so your study holds up.
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
Engineered + reviewed without weeks of back-and-forth.
06
From $495 — qualifying residential
Flat pricing. No surprise add-ons.
What affects your estimate

Six things move your number — most of them you can answer 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 uses property-type ranges based on common cost segregation outcomes. A full study analyzes components, finishes, location, and IRS class-life treatment to produce a defensible report — engineered for your specific property, not an average.

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 be reclassified from 27.5- or 39-year structural life into shorter 5- and 15-year MACRS classes — and what that does to your first-year tax bill. Across asset types, 20–35% of basis typically moves into shorter lives. Short-term rentals reclassify highest (~35%) because of furniture, fixtures, and equipment; raw single-family rentals lowest (~23%). With 100% bonus depreciation permanently restored under the One Big Beautiful Bill Act (July 2025), all reclassified components in the 5-, 7-, and 15-year buckets can be fully deducted in year one. This calculator returns conservative, typical, and aggressive savings bands based on property-type ranges aligned with the IRS Audit Techniques Guide and Rev. Proc. 87-56. Estimates are typically within ±15% of a full engineered study result.

FAQ

Seven honest answers.

Estimates use property-type ranges from common cost segregation outcomes. They're directionally useful — usually within ±15% of a typical engineered result — but a full study models your actual components and finishes, which is what your CPA will rely on at filing.
Across asset types, 20–35% of depreciable basis usually moves into 5- and 15-year lives. Short-term rentals and certain commercial sub-types can run higher; raw single-family rentals tend to 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 — to actually file the depreciation, claim catch-up via IRS Form 3115 if 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.
You upload basics — purchase docs, photos, square footage. Cost Seg Smart's engineered report is typically delivered in under one hour, ready to hand to your CPA.
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.
Ready when you are

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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.