STR Depreciation: How to Write Off Your Airbnb Property

Depreciation is the most underused tax tool in short-term rental investing. Here's how to calculate it, what cost segregation unlocks, and what most STR operators are leaving on the table every year.

Depreciation is the only tax benefit that lets you reduce your taxable income without spending another dollar. A $400,000 Airbnb property generates a paper loss of $14,545 per year — automatically, every year, for 27.5 years — that you can use to offset rental income. Most STR operators understand that depreciation exists. Most are leaving a meaningful portion of it on the table.

How Depreciation Works for STR Properties

The IRS treats residential real property — including short-term rentals — as depreciating over 27.5 years under the Modified Accelerated Cost Recovery System (MACRS). The math is straightforward: take the value of the structure, excluding land, and divide by 27.5. That is your annual straight-line depreciation deduction.

Land does not depreciate. Your county tax assessment typically breaks out land value versus improvement value; apply that ratio to your purchase price to establish the depreciable basis. For a $450,000 purchase in a county where assessments show 20% land value, the depreciable basis is $360,000 — not $450,000.

The 27.5-Year Rule in Actual Dollars

On a $450,000 purchase with a $90,000 land allocation, the depreciable basis is $360,000. Divided by 27.5 years: $13,090 per year in depreciation deductions — automatically available against your rental income on Schedule E. Over a 10-year hold, that is $130,900 in cumulative deductions that cost zero additional cash out of pocket.

For STR operators in the 32% federal tax bracket, $13,090 in annual depreciation translates to approximately $4,189 in actual tax savings per year, per property. Running 5 properties with similar acquisition costs? That is roughly $20,900 in annual federal tax savings from straight-line depreciation alone — before you have claimed a single cleaning fee, mortgage interest payment, or platform commission.

Cost Segregation: The Tax Strategy Most STR Operators Never Use

Straight-line depreciation over 27.5 years is the default. Cost segregation is the accelerated alternative — and for STR operators with properties above $250,000, the difference in year-one tax savings is often measured in five figures.

Cost segregation is an engineering-based tax study that reclassifies components of a property from 27.5-year residential property into shorter depreciation schedules: 5-year personal property (appliances, furniture, certain fixtures and flooring), 7-year personal property (some equipment and assets), and 15-year land improvements (landscaping, driveways, parking areas, outdoor fencing). Assets in the 5, 7, and 15-year classes depreciate far faster than the structure itself — and in years when bonus depreciation applies, they can be substantially or fully written off in year one.

What Gets Reclassified and What It Means

A typical cost segregation study on a furnished STR property reclassifies 20–35% of the property's value into accelerated categories. On a $500,000 property, that is $100,000–$175,000 in assets now eligible for 5 or 15-year depreciation rather than 27.5 years.

According to the National Association of Cost Segregation Studies (NACSS), the average study on a single-family STR property produces $80,000–$160,000 in first-year accelerated depreciation deductions for a $500,000 property, depending on the construction type, furnishing level, and land improvement mix.

When a Cost Segregation Study Makes Financial Sense

Cost segregation studies typically run $3,000–$8,000 for a single-family or small multifamily STR property. The financial test: does the first-year tax savings — accelerated depreciation multiplied by your effective tax rate — exceed the study cost by at least 3x?

A Scottsdale operator managing 4 properties with combined purchase values of approximately $2.1M commissioned a study at a cost of $12,000. The study identified $340,000 in assets eligible for 5-year and 15-year depreciation schedules. In 2025, at 40% bonus depreciation, that created $136,000 in additional first-year deductions. At her 35% effective tax rate, that translated to $47,600 in actual tax savings in year one — a 3.97x return on the study cost. The $12,000 study paid for itself nearly four times over in the first tax year.

The practical threshold: cost segregation studies make economic sense for STR properties purchased above $250,000. Below that price point, the study cost relative to the available tax savings often fails the 3x test.

Bonus Depreciation in 2026: Where Things Currently Stand

The Tax Cuts and Jobs Act of 2017 introduced 100% bonus depreciation for qualifying property — allowing the full cost of 5, 7, and 15-year assets identified through cost segregation to be deducted in the year placed in service. That window has been phasing down annually since 2022:

• 2022: 100% bonus depreciation — the peak year for first-year deductions
• 2023: 80% bonus depreciation
• 2024: 60% bonus depreciation
• 2025: 40% bonus depreciation
• 2026: 20% bonus depreciation — under current law as of mid-2026

Whether Congress restores or extends 100% bonus depreciation through additional legislation in 2026 remains an open question. Several proposals in both the Senate and House have included provisions to reinstate full bonus depreciation for property placed in service in 2025 and 2026. Consult your CPA for current status before making acquisition timing decisions based on bonus depreciation assumptions.

Even at 20% in 2026, on a $100,000–$175,000 cost segregation reclassification, bonus depreciation creates $20,000–$35,000 in additional first-year deductions beyond straight-line treatment. That is real money in the first year that standard depreciation would spread across 5–15 years.

The Passive Activity Rules — and the STR Exception

Here is where depreciation gets complicated, and where getting the structure right matters most.

Rental activity is normally classified as passive income by the IRS under Section 469. Passive losses — including the paper losses generated by depreciation — can only offset other passive income, not wages or active business income. If your STR properties generate a depreciation-driven paper loss in excess of your rental income, you typically cannot use that excess loss to offset your W-2 salary. It carries forward to future years.

Real Estate Professional Status

To unlock unlimited use of passive rental losses against ordinary income, you need Real Estate Professional Status (REPS) under IRS Section 469(c)(7). The requirements: more than 750 hours per year spent in real property trade or business activities, and real estate must constitute the majority of your working time across all occupations. For STR operators who also have full-time W-2 employment, the majority-of-time test is typically impossible to meet.

The Short-Term Rental Exception: The 7-Day Average Stay Rule

There is a specific exception that applies directly to Airbnb-style operators and is less discussed than REPS. If the average guest stay at a property is 7 days or fewer, the IRS does not classify the rental activity as passive under the standard passive activity rules — instead treating it as an active trade or business under Section 469 definitions. This is the STR exception, and it is significant: it allows depreciation losses to potentially offset ordinary income without needing REPS, provided you materially participate in the STR activity.

Material participation for STR operators generally means meeting one of the IRS's seven tests — most commonly logging 500 or more hours of participation per year across your STR properties, or demonstrating that your STR activity constitutes your most significant participation activity. The 7-day average stay test applies property by property: a property primarily rented for 30-day stays does not qualify; a property rented on Airbnb where average stays run 3–5 nights almost certainly does. Document your hours carefully through calendars, communication logs, and maintenance records. The IRS scrutinizes this exception on STR operator returns.

Depreciation is the only tax benefit that lets you reduce your taxable income without spending another dollar. Most STR operators are leaving significant portions of it on the table every year.

What to Track All Year So Your CPA Does Not Dread Your Call

The biggest tax mistake multi-property STR operators make is not in the depreciation calculation — it is in the documentation gap. When a CPA asks for a complete expense breakdown allocated per property, and the answer is a folder of downloaded bank PDFs and a rough memory of what went where, deductible expenses get missed, tax prep drags on for weeks, and billable hours multiply.

MagicBnB's Smart transaction ledger categorizes every bank transaction automatically — cleaning, maintenance, supplies, utilities, platform fees — with AI-suggested categorization and a multi-split allocate-to-property dialog for expenses that span properties. By the time you hand off to your CPA or cost segregation engineer at year-end, every expense is already categorized and property-allocated. The Expense inbox surfaces only the unallocated 20% that actually needs your attention, so you are not reviewing transactions that are already correctly filed. For multi-property operators, Recurring rules handle repeat-spend items like monthly utilities automatically — set the rule once, and the system back-fills past matching transactions and auto-categorizes every future one.

At tax time, the Profitability & P&L export gives your CPA the expense breakdown by category and property that would otherwise take days to reconstruct from raw bank statements. That saves billable hours and reduces the probability that deductible expenses get lost in the handoff. For a full breakdown of which STR expenses are deductible and how to track them, see magicbnb.io/blog/str-expense-tracking-complete-guide. And for the broader tax picture including platform fees, local taxes, and Schedule E structure, see magicbnb.io/blog/airbnb-taxes-explained-what-you-owe.

FAQ: STR Depreciation and Airbnb Tax Write-Offs

Can I deduct the full cost of a new property in the year I buy it?

Not for the structural portion — that depreciates over 27.5 years. But personal property components (furniture, appliances, certain fixtures) and land improvements (landscaping, parking, fencing) identified through a cost segregation study are eligible for bonus depreciation in the year of acquisition. At 20% bonus in 2026, 20% of those reclassified assets can be deducted immediately; the remainder depreciates over 5 or 15 years.

What happens to depreciation when I sell my Airbnb property?

Depreciation recapture applies at sale. The IRS taxes previously claimed depreciation at a maximum rate of 25% under Section 1250 — regardless of your ordinary income tax rate. This recapture applies to all depreciation claimed during ownership, including any accelerated amounts from cost segregation. A 1031 exchange into another qualifying investment property defers — but does not eliminate — this recapture obligation. Plan accordingly before selling.

Do I have to depreciate my Airbnb property?

You are not legally required to claim depreciation. However, the IRS calculates depreciation 'allowed or allowable' at sale regardless of whether you actually claimed it — meaning you will owe recapture tax on depreciation you never took the benefit of. Failing to claim depreciation is one of the most expensive tax mistakes an STR investor can make. If you have missed years of depreciation claims, IRS Form 3115 (Change in Accounting Method) allows you to catch up the missed deductions in the current tax year.

What is the depreciable basis and how do I calculate it?

Your depreciable basis is the purchase price plus acquisition costs (closing costs, title insurance, transfer taxes) minus the land value. Use your county property tax assessment to determine the land-to-improvement ratio, then apply it to your total acquisition cost. For a $450,000 purchase where the county assessment shows a 20% land allocation, the depreciable basis is $360,000. This number flows directly into your annual depreciation calculation and your cost segregation study.

Does bonus depreciation apply to STR properties bought in 2026?

Yes, at 20% under current law — but only for assets reclassified into 5, 7, or 15-year categories through cost segregation. The structural portion of the property (27.5-year residential property) is not eligible for bonus depreciation under any scenario. Whether Congress reinstates higher bonus depreciation rates for 2026 acquisitions is unresolved as of May 2026. Model your deal at 20% and treat any legislative upside as an unplanned benefit.

Should I do a cost segregation study on every STR property I buy?

For properties above $250,000, run the math before deciding. Request a fee quote from a cost segregation firm — CSSI, KbK Forensic Accounting, and Engineered Tax Services are among the reputable national operators — and test whether projected first-year savings exceed the study fee by at least 3x. For properties below $250,000, straight-line depreciation combined with meticulous expense tracking typically produces better economics than a $3,000–$5,000 study.

Can I use STR depreciation losses to offset my W-2 income?

Potentially yes, via two pathways: Real Estate Professional Status (750+ hours in real property, majority-of-time test), or the Short-Term Rental Exception (average guest stay of 7 days or fewer plus material participation of 500+ hours). If neither applies, depreciation losses in excess of rental income carry forward to offset future passive income or are released at the property's eventual sale. Your CPA should evaluate which pathway, if any, applies to your specific situation annually.

About MagicBnB

MagicBnB (magicbnb.io) is the portfolio intelligence platform for STR operators who want their finances as organized as their operations. The Smart transaction ledger categorizes every bank expense automatically by property — cleaning, maintenance, utilities, platform fees — so your Schedule E prep is clean before tax season rather than a crisis during it. The Expense inbox isolates the transactions that still need your attention, so nothing deductible slips through the cracks. And the Profitability & P&L view shows each property's net margin month over month, so you always know which properties are generating taxable rental income and which are running in paper-loss territory after depreciation. Connect your bank accounts and PMS at magicbnb.io.