STR Bonus Depreciation 2026. What the OBBBA Restoration Means for Your Year-End Tax Strategy

Picture this: an investor sitting across the table with a spreadsheet showing the tax analysis for a Nashville short-term rental she is seriously considering. Her bonus depreciation line item reads 20 percent. She pulled the number from an article published in early 2024, and nobody has corrected her since. Her deal math understates the first-year tax benefit by approximately $120,000, and she is on the verge of passing on a property that pencils well under the law as it actually stands in 2026.

This scenario plays out more often than it should. The Tax Cuts and Jobs Act established a phasedown schedule that reduced bonus depreciation rates annually. Then federal legislation reversed the phasedown entirely. The result is a market full of investors working from outdated assumptions: some overclaiming based on pre-2023 rules, some underclaiming based on the phasedown, and most unaware that the law changed meaningfully in 2025.

Here is the 2026 picture, with the math, the relevant code sections, and the action items before year end.

What Bonus Depreciation Is and What It Is Not

Standard depreciation under the Modified Accelerated Cost Recovery System (MACRS) spreads the cost of a residential rental property over 27.5 years. On a $500,000 purchase, that produces a deduction of $18,182 per year. The IRS is methodical and patient with residential property classification. It is considerably less patient with furniture, appliances, carpeting, fixtures, and land improvements, which is why it assigns shorter recovery periods to those assets.

Bonus depreciation under IRC Section 168(k) works differently. Instead of spreading eligible property over its assigned recovery period, bonus depreciation allows you to deduct the full cost in the year you place the asset in service. The critical requirement: “eligible property” under Section 168(k) means property with a MACRS recovery period of 20 years or less. A standard residential rental property, sitting at 27.5 years, does not qualify on its own.

This is the distinction investors most often miss. Bonus depreciation is not a feature of the property as a whole. It is a feature of specific components within the property, and those components need to be separately identified and classified before the benefit becomes available. That identification process is cost segregation, and the two strategies are inseparable in practice.

The TCJA Phasedown and What the OBBBA Changed

From 2018 through 2022, the Tax Cuts and Jobs Act provided 100% bonus depreciation across all qualifying property. Congress then wrote in a phasedown schedule that reduced the rate by 20 percentage points each year starting in 2023, heading toward zero in 2027. STR investors who tracked the law were adjusting their deal math downward annually. Many investors who stopped following tax developments in 2021 or 2022 never adjusted at all, which meant they were either overclaiming or building models on assumptions that no longer matched current law.

Congress reversed course with the One Big Beautiful Bill Act (H.R. 1, 119th Congress), signed into law in 2025. The OBBBA permanently restored 100% first-year bonus depreciation. IRS Notice 2026-11, issued January 14, 2026, provides implementation guidance under Treasury Regulation 1.168(k)-2 for property placed in service under the restored rate.

The OBBBA applies to property placed in service after January 19, 2025. It does not retroactively change depreciation already claimed on property placed in service during 2023 or 2024, when the applicable TCJA phasedown rates were 80% and 60% respectively. If you acquired an STR in those years, your depreciation schedule for that property reflects the rate in effect at placement in service. For 2026 acquisitions and new placements in service, the rate is 100% and it is permanent under current law.

If your deal model still shows 20% for 2026, update it before you make another financial decision based on that number.

Cost Segregation: The Essential Partner

I have reviewed more cost segregation proposals than most people have unread emails, and the central claim is consistently accurate: without a study, your first-year depreciation on a $500,000 STR is $18,182, and your bonus depreciation is exactly zero.

Here is the structural reason. When you purchase a residential property and place it in service as a short-term rental, the IRS treats the entire acquisition as a single 27.5-year asset unless you formally reclassify its components. The kitchen appliances, the HVAC system, the installed flooring, the outdoor deck, the furnishings, and the fixtures are all absorbed into the residential classification by default. Since the property overall sits at 27.5 years, none of it qualifies for bonus depreciation under Section 168(k), which requires a sub-20-year recovery period.

A cost segregation study (conducted by a qualified engineer with tax expertise, not simply a spreadsheet exercise) separates the property into its component categories. Personal property such as appliances, carpeting, furniture, and fixtures typically qualifies as 5- or 7-year property. Land improvements such as sidewalks, fencing, outdoor lighting, and landscaping typically qualify as 15-year property. Every one of those categories has a recovery period under 20 years, which means every one of them qualifies for 100% bonus depreciation in year one.

Studies on short-term rental properties typically identify 15% to 40% of the total acquisition cost as short-life personal property and land improvements. The range depends on property type, age, finish level, and what was included in the purchase. A furnished lakefront cabin with outdoor amenities will show a meaningfully different allocation than an unfurnished urban condominium.

Cost segregation studies typically run $5,000 to $15,000 for residential investment properties. The timeline matters for year-end planning: well-conducted studies take four to eight weeks to complete, which means investors targeting a 2026 year-end placement in service need to order the study promptly after closing.

The Math on a $500,000 STR Property in 2026

Here is a worked example using a $500,000 STR acquisition in 2026, with a cost segregation study identifying $150,000 of the purchase price as personal property and land improvements eligible for bonus depreciation. The remaining $350,000 continues on the standard 27.5-year MACRS schedule.

The gap between the outdated 20% assumption and the correct 100% rate is $120,000 in additional first-year deductions. For an investor in the 37% federal marginal bracket with sufficient ordinary income to absorb the loss, that translates to approximately $44,400 in federal tax savings that an investor using the wrong math does not capture in planning.

Two points worth noting: first, the $150,000 personal property figure is an illustration. Your actual allocation depends on a real cost segregation study conducted on your specific property. Second, these deductions only offset ordinary income if you satisfy the material participation rules discussed in the next section. Without material participation, the $150,000 first-year loss is passive and accumulates in a suspended loss account until you have passive income or dispose of the property.

For Nashville investors evaluating short-term rental acquisitions, StaySTRA’s Nashville market data provides current revenue and occupancy benchmarks to pair with this tax analysis before committing to a deal.

Who Can Use the Losses: Material Participation Under IRC Section 469

Depreciation losses are only as useful as the income you can apply them against. Under the passive activity loss rules in IRC Section 469, losses from a rental activity are passive losses by default. Passive losses can only offset passive income, not wages, salary, or self-employment income from an unrelated trade or business. If your STR generates a $150,000 first-year paper loss and you do not meet the material participation tests, that loss accumulates in a suspended account until you have passive income to absorb it or you dispose of the property in a fully taxable transaction.

Two practical paths exist for STR investors to convert passive losses to non-passive losses.

Path 1: The 500-Hour Material Participation Test

Treasury Regulation 1.469-5T provides seven tests for material participation. The most commonly applied for STR investors is the 500-hour test: if you participate in the short-term rental activity for 500 or more hours during the year, the activity is treated as non-passive and losses can offset ordinary income. The short-term rental exception embedded in Section 469 allows investors who participate materially to avoid passive classification, unlike standard long-term rental activities where different rules apply.

500 hours is roughly 10 hours per week throughout the year. For an investor who self-manages the property and handles guest communications, maintenance coordination, cleaning oversight, and related tasks, this threshold is achievable. For someone with a full-service property manager handling day-to-day operations, documenting 500 credible hours becomes significantly harder. Contemporaneous records, meaning a time log maintained during the year rather than reconstructed at tax time, are what the IRS expects to see if the claim is examined. A calendar filled in from memory in March carries far less weight than one maintained in real time.

Path 2: Real Estate Professional Status

Real estate professional status (REPS) under IRC Section 469(c)(7) is a higher threshold with broader reach. To qualify, you must spend more than 750 hours during the year performing services in real property trades or businesses in which you materially participate, and those hours must represent more than 50% of your total professional work hours for the year.

The “more than 50%” requirement effectively excludes investors who hold a full-time W-2 job outside of real estate. Someone working 2,000 hours per year in another field would need to document more than 2,000 hours in real estate, which is not realistic for most investors. For investors who work primarily in real estate, construction, or property management, REPS is achievable and eliminates passive classification for all real property rental activities, not just one property.

Unlike the 500-hour test, which is property-specific, REPS aggregates hours across all real property activities: acquisition research, lease negotiations, renovation oversight, property management, and related services. Each category must be tracked and documented with sufficient specificity to withstand scrutiny. The IRS has increased audit focus on REPS claims made by STR investors, and contemporaneous records are the primary defense.

Year-End Deadlines That Actually Determine Your Deduction

Bonus depreciation applies to property placed in service during the tax year. The IRS defines “placed in service” as the date the property is in a condition or state of readiness and availability for a specified use. For a short-term rental, that means the property is ready and available for guests to book, not the date you signed a purchase agreement or closed on the property.

This distinction creates planning risks that catch investors off guard every December. If you close on a property in October and spend November and December renovating and furnishing before accepting your first booking, the IRS’s reasonable position is that the property was not placed in service until it was available for guests. The date your listing went live on Airbnb or Vrbo is closer to the correct placed-in-service date than your HUD-1 closing statement.

Working backward from December 31 for an investor targeting a 2026 acquisition:

• Order the cost segregation study immediately after closing. Studies take four to eight weeks. A November close with a January study completion means the results arrive after December 31, and missing the placed-in-service date means waiting for the 2027 tax year. Order promptly after closing.
• Document the placed-in-service date contemporaneously. Screenshot your Airbnb or Vrbo listing showing the availability calendar on the day you activate it. Photograph the property in rental-ready condition with a date-stamped record. These are the evidence records if the IRS ever challenges your placed-in-service date.
• Track REPS and material participation hours in real time. Documentation is built during the year, not reconstructed at year end. A time-tracking app or calendar log maintained contemporaneously is far more defensible than a retroactive summary assembled during tax preparation.
• Confirm DSCR loan closing timelines with your lender. Lenders sometimes push December closings into January. If your deal model depends on capturing 2026 bonus depreciation, confirm the expected close date early and build in buffer for processing delays.

How This Changes the DSCR Loan Deal Analysis

DSCR loans for short-term rentals are underwritten on projected rental income, not the borrower’s personal tax situation. The bonus depreciation benefit does not change how a lender evaluates your loan application, but it substantially changes the after-tax return calculation you should be running before deciding whether to buy at a given price point.

For a Nashville investor using a DSCR loan to acquire a $500,000 STR with $150,000 in personal property identified through cost segregation, the year-one tax position under correct 2026 law generates $162,727 in depreciation deductions. Under the outdated 20% assumption, the same investor models $42,727. The $120,000 difference translates to approximately $44,400 in additional federal tax savings for an investor in the 37% bracket. That is capital that improves the actual cash-on-cash return, not just the paper math.

Investors evaluating whether a market’s revenue fundamentals justify the acquisition cost should factor this tax benefit into total return modeling alongside the financing structure. StaySTRA’s analyzer lets you run current market data alongside your financing assumptions before committing to a purchase.

For the depreciation mechanics that underlie this analysis, see our detailed guide to vacation rental property depreciation, covering MACRS structure, component classification, and how the 27.5-year schedule interacts with shorter-life personal property. For investors wondering how the STR income classification affects self-employment tax exposure, our analysis of when Airbnb income crosses the IRS self-employment tax threshold covers the parallel question.

The Legislative Picture Going Forward

The OBBBA made 100% bonus depreciation permanent under current law. There is no active phasedown schedule and no pending legislation that would change the rate. For 2026 planning purposes, 100% is the applicable law.

It is worth acknowledging that “permanent” in tax law means permanent unless Congress acts again, which Congress has done twice on this specific provision in the past decade. Multi-year deal models that depend on sustained 100% bonus depreciation are defensible under current law but carry a legislative risk worth noting in conservative underwriting. For deals that only work at the full 100% benefit, that dependency is worth acknowledging.

This article provides general information and should not be construed as legal or tax advice. Depreciation calculations, material participation determinations, and cost segregation analyses involve individual facts that vary by property, investor, and tax year. Consult a qualified CPA or tax attorney before making these decisions for your specific circumstances.

We do our best to keep our tax guides accurate and current, but tax law changes and we are only human. Always verify current rules with the IRS, its published notices, and a qualified tax professional before making decisions for your specific property and filing situation.