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Cost Segregation Calculator

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Keep scrolling to begin your free cost segregation study with our cost segregation calculator and report generator!

Your Real Estate Tax Savings Start Here

Accelerate your real estate tax savings with our free cost segregation calculator designed specifically for residential rental properties.

This tool helps landlords, CPAs, and real estate investors estimate how much of a property’s value can be allocated to 5-year, 15-year, and 27.5-year depreciation categories—including the impact of bonus depreciation and IRS Section 168(k).

Whether you own a single-family rental or a multifamily building, this calculator can help you understand potential first-year tax savings before investing in a full engineering study.

Estimate your depreciation. Plan smarter. Maximize your after-tax return on investment.

Cost Segregation Benefits Illustration
Full Name
We use the email address to send you the full report after you complete your property’s inputs. You are not added to a mailing list.
Did You Know?
Only the improvement portion of your property is depreciable. For example, if you bought a home for $500,000 and the land is worth $100,000, your depreciable basis is $400,000.
Property Address
Enter the date the property was first ready and available for rent. The year should match the tax year selected below.
Select the tax year in which the property was placed in service. This year should match the date entered above and determines the applicable depreciation rules.
Enter the total finished and unfinished building area, including garage area if it is included in the depreciable basis.
Enter the total lot area. A quarter-acre lot is approximately 10,000 square feet. Lot size helps estimate the space available for selected exterior improvements, but it does not create land-improvement value by itself.
What is ‘Depreciable Tax Basis’?
It’s the portion of your property’s purchase price that can be depreciated—typically the total cost minus land value.

Example: You purchased a property for $600,000. If the land is worth $150,000, your depreciable basis is $450,000.
Enter the depreciable basis of the buildings and improvements only. Exclude land value and separately purchased personal property. This estimator is intended for depreciable basis of $1.5 million or less.
How to estimate your tax rate:
If you’re unsure, choose the closest bracket. Typical federal + state rates combined range from 22% to 40%.
Does Bonus Depreciation Apply?
Bonus usually applies unless you inherited the property from a relative and/or you must depreciate your property over ADS lives.
Are you using ADS depreciation?
This estimator is designed for single-family homes, duplexes, triplexes, and fourplexes.
The number of stories helps our calculator estimate foundation and roof structures, as well as the total footprint of your building.
Count enclosed garage bays. Garage spaces help estimate building characteristics but should not be treated as 15-year land improvements.
Count paved off-street spaces outside the garage. Do not include enclosed garage bays. Select 0 if the property has only gravel, dirt, or no dedicated parking area.
Did You Know? Removable flooring like carpet is typically 5-year property, while glued-down tile or wood is usually 27.5-year.
Are the appliances included in the depreciable tax basis entered above?
Select Yes if the appliances were included with the property and their value is included in the depreciable basis entered above. Select No if they were purchased separately or excluded from that basis.
Appliances Included with Each Unit
Select all appliances included with each unit. The preceding question determines whether appliance cost is included in the allocation.
Primary HVAC System Type
Select the primary system used by the property.
Rate the property’s present physical condition relative to similar residential properties.
Rate the original construction and finish quality, not merely whether the property is newly remodeled.
Choose the closest approximate cabinet and countertop length for each unit. Building quality will separately adjust the assumed cost per linear foot.
Select the flooring type covering the largest portion of the building. Choose Mixed flooring when no single type clearly represents most of the property.
Primary Window Covering Type
Select the primary type, or leave blank if window coverings were not included with the property.
Exterior Site Improvements Included in Basis
Select only exterior improvements that exist and are included in the depreciable basis entered above. These selections may support an estimated 15-year land-improvement allocation.
Full Name
Drag & Drop Files, Choose Files to Upload

View a Sample Cost Segregation Report Below

12345 Anywhere Cost Segregation Report
What is cost segregation, and how does it help me?

Cost segregation is a tax‑planning technique that breaks down a rental property into its component parts. Instead of depreciating everything over 27.5 years, certain elements—like appliances, flooring and land improvements—can be depreciated over 5 or 15 years. This accelerated depreciation increases your deductions up front, boosts cash flow and can significantly reduce your current‑year tax liability. Our cost‑segregation calculator helps you see the potential impact on your property before you pay for a formal study

How much does a cost‑segregation study cost?

At Wm. Neil Langlois CPA, LLC, our residential cost‑segregation calculator is completely free; anyone can use it to estimate their tax savings without commitment or payment. If you decide to pursue a formal cost‑segregation study, prices vary: streamlined software reports may start under six hundred dollars, while comprehensive, engineering‑based studies for larger or more complex buildings often run into the thousands. In most cases, the first‑year tax savings far exceed the fee. Use our free tool to decide whether a paid study makes sense for your property.

Why would a CPA firm offer a cost‑segregation calculator?

We don’t sell cost‑segregation studies or payroll services. We’re a CPA firm that prepares business and individual tax returns and provides year‑round advisory. We offer this free cost‑segregation calculator so our clients can evaluate the benefits of accelerated depreciation without falling prey to credit mills or high‑pressure sales tactics. By educating you and providing a trusted referral network, we help you make informed decisions and keep your overall tax strategy coordinated under one roof.

How does cost segregation fit into my overall tax strategy?

Accelerated depreciation is just one piece of a holistic tax plan. After you run the calculator, Wm. Neil Langlois CPA, LLC can help you integrate those projected deductions into your business return, coordinate with your personal return and ensure you’re not missing other opportunities like Section 179 expensing or the Qualified Business Income deduction. Even if you ultimately engage an outside specialist to perform a study, we’ll incorporate their report into your filings and provide ongoing advisory to optimize your tax savings year after year.

What happens after I use the estimator?

You’ll instantly receive a detailed cost‑segregation report by email, and we receive a copy to monitor quality. There’s no charge, no login and no automatic sales follow‑up. If you already work with a trusted advisor, share the report with them. If you don’t have one, you’re welcome to schedule a consultation with Wm. Neil Langlois CPA, LLC to discuss how the findings could fit into your broader tax strategy. Should you decide a formal study is warranted, we can introduce you to reputable cost‑segregation specialists—so you never have to navigate unfamiliar providers on your own.

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