Cost Segregation in Texas: Rules and Savings for Owners

Texas rewards real estate investors in a way most states do not, because it levies no personal income tax on the returns a property generates. Cost segregation stacks a second advantage on top of that by accelerating the depreciation you claim on your federal return, which front-loads deductions into the years you own the property. The sections below cover how cost segregation works for Texas owners, how the state franchise tax now treats bonus depreciation, what a study is worth, and how to choose a firm to run one.

As co-founder of Seneca Cost Segregation and a real estate investor myself, I have watched Texas owners assume a no-income-tax state leaves nothing to plan around. What we see consistently across Texas portfolios is that the real savings live in the timing of the federal depreciation, and the state franchise tax rules that used to complicate that timing changed at the start of 2026.

I wrote this to give Texas owners a clear read on what actually changed, what a study tends to return on a typical Texas property, and where the deductions can and cannot be applied against income.

What is Cost Segregation?

Cost segregation is a tax strategy that enables you to accelerate the depreciation of a property by subjecting its components to depreciation schedules consistent with their actual useful lives.

Traditionally, you allocate the entire depreciable basis of a building over 27.5 years (residential) or 39 years (commercial).

Cost segregation takes a different approach, putting the various building components into different buckets according to their recovery periods as follows:

• ●27.5 or 39 years: Real property (the core building structure)
• ●15 years: Site/land improvements (fencing, paving, swimming pools, etc.)
• ●5 or 7 years: Personal property (furniture, appliances, carpeting, etc.)

The approach paves the way to use 15- or 5/7-year depreciation schedules for the shorter-lived assets, which is more efficient.

Why Cost Segregation Matters in Texas

Texas gives investors a head start, and cost segregation turns that head start into cash flow you can put to work now.

Standard depreciation spreads a building’s cost basis over 27.5 years for residential property or 39 years for commercial. Cost segregation breaks the building into its parts and moves the shorter-lived components onto 5, 7, and 15 year schedules, so a large share of the deduction lands in the first year rather than decades later.

A dollar deducted today is worth more than the same dollar deducted in year 39, and that gap is the whole point in a state like Texas. With no personal income tax to erode the benefit, an individual owner keeps the full value of the accelerated federal deduction.

Shorter-lived assets also qualify for bonus depreciation. Any component with a recovery period of 20 years or less is eligible, which is why the 5, 7, and 15 year property a study identifies can be written off immediately. Read how cost segregation and bonus depreciation work together to compound the first-year deduction.

The One Big Beautiful Bill Act, signed July 4, 2025, permanently restored 100 percent bonus depreciation for qualifying property placed in service after January 19, 2025. That reversed the phase-down that had cut bonus depreciation to 60 percent in 2024 and 40 percent for early 2025, and you can read the detail on the Big Beautiful Bill bonus depreciation change.

Types of Properties That Qualify in Texas

Most income property in Texas is a candidate, and the strongest returns come from buildings that hold a lot of non-structural value.

Texas carries deep inventory across almost every asset class, and the same reclassification logic applies to each. The property types that come up most often in our Texas studies include:

• ●Single-family rentals, duplexes, triplexes, and fourplexes
• ●Apartment and multifamily buildings
• ●Short-term and vacation rentals
• ●Retail, office, and mixed-use buildings
• ●Warehouse, industrial, and manufacturing space
• ●Self-storage and other site-heavy properties

Buildings with heavy site work tend to produce the highest share of reclassifiable cost, because parking lots, landscaping, fencing, and exterior lighting fall into the 15 year class. A property with a depreciable basis above roughly $300,000, excluding land, is usually large enough for the savings to justify a study. See how we confirm which properties qualify for a study before committing.

How to Calculate Your Potential Tax Savings in Texas

The savings come off the federal return, and Texas now does less to complicate them than it once did.

For an individual Texas investor, the state does not tax personal income, so the deduction a study accelerates on your federal return carries no offsetting Texas income tax and there is no separate state depreciation schedule to keep. That is a real advantage over states that decouple from federal bonus depreciation and force a second set of books.

Entities can owe the Texas franchise tax, the state’s margin tax, but only above a revenue floor. Businesses at or below $2.65 million in annualized total revenue fall under the no-tax-due threshold for the 2026 and 2027 report years, so most single-property LLCs owe nothing at the state level.

Where the franchise tax does apply, the treatment just improved. Texas historically computed the tax using the Internal Revenue Code as it stood on January 1, 2007, which locked out federal bonus depreciation. Beginning with the 2026 franchise tax report, the Texas Comptroller aligned the calculation with the current Code, so an entity using the cost of goods sold method can include federal bonus depreciation on assets placed in service after January 19, 2025.

Cost Segregation Example With Bonus Depreciation (Federal Level)

Assume you place a residential rental in service in 2026 with the following details:

• ●Purchase price: $1,000,000
• ●Improvements: $50,000
• ●Land value: $150,000
• ●Depreciable basis: $900,000

A study finds that 20 percent of the basis is personal property and 15 percent is site improvements, leaving 65 percent as real property.

• ●Personal property: 20% x $900,000 = $180,000
• ●Site improvements: 15% x $900,000 = $135,000
• ●Real property: 65% x $900,000 = $585,000

The property goes into service after January 19, 2025, so the $180,000 of personal property and the $135,000 of site improvements both qualify for 100 percent bonus depreciation, which puts $315,000 into the Year 1 deduction. The real property continues on the 27.5 year schedule at about $21,273 a year.

The first-year deduction comes to roughly $336,273, compared with $32,727 under straight-line treatment. At a 37 percent federal rate, the extra $303,546 in deductions is worth about $112,000 in first-year tax savings.

How Texas Investors Use the Deductions

A large deduction only helps if the tax rules let you apply it against income, and that is where most Texas investors need a plan.

Cost segregation creates a paper loss, and the passive activity rules decide whether that loss can offset your other income. For most investors, rental losses are passive and can shelter only passive income, carrying the remainder forward until you have passive gains or sell the property.

Two paths change that math. An investor who qualifies as a real estate professional under the IRS material participation tests can treat rental losses as active and apply them against wages or business income. Whether cost segregation can offset your W-2 income turns entirely on meeting those tests, so the call belongs with your CPA.

The second path runs through short-term rentals. A property with an average guest stay of seven days or less is generally not treated as a rental activity under the passive rules, so material participation can make the loss active without real estate professional status. The short-term rental strategy is common across Austin, San Antonio, and the Hill Country, where nightly rentals make up a large part of the market.

Cost Segregation Study Process in Texas

Cost segregation processes primarily depend on the methodology employed. At Seneca Cost Segregation, we exclusively do engineering-based cost segregation studies.

Here’s the typical process our team follows:

Initial Assessment and Data Collection

You can contact us for a preliminary assessment of your property to see if it qualifies for cost segregation. We’ll provide an estimate of the potential tax savings.

If you decide to proceed with the study, our team will begin by gathering relevant documentation to support the study. We’ll need proof of ownership documents. You should also have purchase and construction documents.

Property Inspection and Engineering Analysis

Our engineering team will do an on-site or virtual tour of your property. We’ll identify its components and classify the assets.

Using industry best practices and engineering-based costing techniques, we’ll allocate costs to the various shorter- and longer-lived assets.

Report Preparation and Implementation Support

We’ll put together a report detailing our findings. We’ll also detail our methodology and the rationale used to classify assets and allocate costs.

Your CPA can then use the report to prepare your taxes. We provide post-study support in case you and your CPA need assistance in effectively implementing our findings.

How to Find the Right Cost Segregation Expert in Texas

It’s essential to work with the right cost segregation experts to effectively navigate the nuances of doing cost segregation in Texas.

Below are the criteria you should use to vet potential candidates:

• ●Engineering vs. other methodologies: In its Cost Segregation Audit Technique Guide, the IRS explicitly states that a study done by someone with an engineering or construction background is more reliable.
• ●State-specific nuances: You want a cost segregation team that can navigate local rules and construction nuances with ease. Our engineering team has completed over 10,200 studies across the nation.
• ●Post-study support: In case your CPA needs help or clarification, will the cost segregation firm be available post-study to assist in implementing the findings effectively?

Risks and Compliance Considerations

The IRS approves of cost segregation because it is actually the correct way to depreciate property. Done correctly, it is a low-risk tax strategy.

Still, you must pay attention to the following issues to reduce audit risk:

• ●The IRS Cost Segregation ATG: Strictly following the IRS Audit Technique Guide signals that a study was conducted according to industry best practices.
• ●Reasonable cost allocations: You may be tempted to allocate costs to shorter-lived assets aggressively. The IRS expects all cost allocations to be reasonable and defensible.
• ●Audit defense: You cannot completely eliminate audit risk. Therefore, you want to work with a cost segregation firm that can help you defend the study in case of an audit. All our studies are backed by the iron-clad Seneca AuditDefense Guarantee.

Frequently Asked Questions (FAQs)

Below are the questions we hear most often from Texas owners about cost segregation.

Why Texas Owners Choose Seneca

Seneca Cost Segregation prepares engineered studies rather than desktop estimates. Our in-house engineering team documents every asset, our Head of Engineering signs off on each report before it goes out, and audit defense is included with every engagement. Across more than 10,200 properties assessed and over $5 billion in cost basis analyzed, we have never lost an IRS audit.

Conclusion

Texas already hands investors an edge with no personal income tax, and cost segregation compounds it by pulling federal deductions forward into the years you need the cash. With 100 percent bonus depreciation permanent again and the state franchise tax now following current federal depreciation, the timing has rarely been better for a study.

The size of the benefit depends on your property, your basis, and how the passive activity rules apply to your situation, which is why the numbers are worth modeling with your CPA before you file. A preliminary estimate is a low-effort way to see whether the savings justify a study on your specific property.

Reach out for a free proposal or run your property through the calculator to see the first-year number for yourself.