Cost Segregation Study in Texas for Airbnb and Short-Term Rental Investors

Texas has never had a personal income tax, and the prohibition is written into the state constitution — changing it would require a statewide vote, not just a legislative act. That has a direct, practical effect on cost segregation: because individual owners and pass-through entities (LLCs, partnerships, S corporations) file no Texas income tax return, there is no state-level depreciation schedule to conform to or decouple from. The 100% bonus depreciation an engineering-based cost segregation study unlocks on the federal return is simply the whole benefit — there is no state clawback to plan around.

The closest thing Texas has to a business income tax is the franchise tax (sometimes called the margin tax), which applies only to entities with annualized total revenue above $2.65 million for the 2026 report year — a threshold most individual STR and rental owners never reach. For years, the franchise tax used a depreciation methodology frozen to the Internal Revenue Code as it stood on January 1, 2007, which meant bonus depreciation and other post-2007 federal provisions generally were not allowed for franchise tax purposes even at larger entities. The Texas Comptroller changed that: effective with the 2026 franchise tax report, the state aligned its franchise tax depreciation rules with the current Internal Revenue Code, letting qualifying businesses apply the same 100% bonus depreciation treatment enacted by the One Big Beautiful Bill Act (OBBBA) to assets acquired after January 19, 2025. In short, even the one Texas tax that used to decouple from federal depreciation no longer does, for most purposes — the Comptroller's guidance does not spell out in detail how the update applies across every franchise tax computation method, but that distinction rarely matters here, since the great majority of individual and small-business rental owners fall well below the no-tax-due revenue threshold and file no franchise tax report at all.

None of that offsets Texas's property tax bill, which is a real cost for any rental owner. Texas's average effective property tax rate runs around 1.6% of assessed value — among the highest in the nation, since the state relies on property taxes rather than income tax to fund schools and local government. Owners of Airbnb and vacation-rental properties in Austin, San Antonio, Dallas, and Houston, the Hill Country town of Fredericksburg, and Gulf Coast markets like Galveston and Port Aransas carry that cost on higher-value vacation and investment properties, which is precisely why capturing every available federal depreciation deduction through a cost segregation study is worth doing properly rather than leaving it to a generic straight-line schedule.

A cost segregation study is an engineering-based analysis of a rental property that separates its cost into components with different depreciation lives. Under a default schedule, a residential rental building depreciates straight-line over 27.5 years and a commercial building over 39 years — flooring, cabinetry, appliances, decorative and specialty lighting, certain electrical and plumbing runs dedicated to specific equipment, fencing, landscaping, and paving are all typically stuck in that long schedule even though they wear out, or would be replaced, far sooner.

An engineer-led study identifies which components legally qualify for 5-year, 7-year, or 15-year depreciation instead, based on IRS guidance and cost documentation from the purchase, construction, or renovation of the property. Property placed into these shorter classes currently qualifies for 100% bonus depreciation under the One Big Beautiful Bill Act (OBBBA), signed into law in July 2025, which permanently restored full first-year expensing for qualifying property acquired after January 19, 2025 — reversing the phase-down schedule that had been reducing bonus depreciation toward zero under prior law. The practical result is that an owner can take a large depreciation deduction in the year the study is completed, rather than spreading that same deduction over decades.

For illustration only — your results depend on your property and tax situation, and this is not a projection of actual savings.

Suppose an investor buys a short-term rental property in the Texas Hill Country for $700,000, allocating roughly $500,000 to the depreciable building and improvements after removing land value. On a standard 27.5-year residential schedule, that owner would deduct about $18,000 per year. A cost segregation study might reclassify roughly 25-30% of that basis — say $140,000 — into 5-, 7-, and 15-year property covering items like flooring, appliances, decorative fixtures, fencing, and landscaping. Under current federal law, that $140,000 in reclassified components qualifies for 100% bonus depreciation in the year the property is placed in service, producing a large first-year federal deduction instead of a small annual one.

Because Texas has no personal income tax, there is no separate state depreciation schedule to compute alongside the federal one — the owner's Texas tax situation does not change based on this election, unlike in states that decouple from federal bonus depreciation and require the deduction to be added back and spread out on a state return. The property tax bill on the $700,000 property, at Texas's roughly 1.6% average effective rate, would separately run in the neighborhood of $11,000 a year regardless of the depreciation election. Actual qualifying percentages, deduction amounts, and tax impact depend on the property's construction, purchase documentation, and the owner's overall tax position — a licensed cost segregation provider and your CPA determine the real numbers for your property.

Cost segregation is not limited to the year of purchase. If you have owned a Texas rental or short-term rental property for one year or several, a look-back study can identify the same reclassified components retroactively. Instead of amending prior-year tax returns, the study supports a Form 3115, Application for Change in Accounting Method, which reports the missed depreciation as a Section 481(a) adjustment — a one-time catch-up deduction claimed on the current year's federal return.

This is often a good fit for Texas owners who bought a property years ago without a cost segregation study, or who completed a renovation on an existing rental and never separated the renovation costs into shorter depreciation classes. Because Texas imposes no state income tax on the resulting deduction, the entire benefit of the look-back study runs through the federal return without any state-level filing to coordinate.

Cost segregation tends to make the most sense for:

• Short-term rental and Airbnb hosts in markets such as Austin, San Antonio, Dallas, Houston, Fredericksburg and the surrounding Texas Hill Country, Galveston, and Port Aransas, where vacation-rental property values — and the depreciable basis that comes with them — are often higher than typical long-term rental housing.
• Long-term rental property owners with single-family or small multifamily properties who have not previously separated out short-life components and are still depreciating the entire building over 27.5 years.
• Recent buyers and owners who have completed a renovation, since both a purchase and a substantial remodel create a new pool of costs — flooring, fixtures, cabinetry, specialty systems — that a study can analyze.
• High-income owners considering the short-term rental material participation strategy, sometimes described as the STR loophole: under IRS rules, a rental with an average guest stay of seven days or less is generally not treated as a passive rental activity, so an owner who materially participates in operating it may be able to apply losses — including the large first-year deduction from a cost segregation study — against active or W-2 income rather than only against other passive income. This strategy depends on meeting specific material participation and average-stay tests and should be evaluated with a CPA before relying on it.

If you're a short-term rental owner, our guide to short-term rental cost segregation walks through the 39-year default schedule, the W-2 income offset strategy, and a full worked example.