Vacation Rental Property Depreciation. How STR Investors Calculate and Maximize Their Tax Write-Off

This article provides general tax information and should not be construed as tax or legal advice. Consult a qualified CPA familiar with short-term rental taxation for guidance specific to your situation.

A $350,000 vacation rental property generates $10,909 per year in depreciation deductions under standard IRS rules, without spending an extra dollar or changing anything about how you operate it. Add a cost segregation study that reclassifies a portion of the property into shorter-lived components, apply the 100% bonus depreciation that Congress made permanent under the One Big Beautiful Bill Act, and your first-year deduction on the accelerated components alone can reach $45,000 to $120,000 or more. That gap, between what most first-time buyers claim and what an informed STR investor captures, is purely a function of knowing how the rules work.

Most STR buyers know depreciation exists as a concept. Very few understand how to calculate the depreciable basis, what drives the annual deduction up or down, why cost segregation is the force multiplier most people leave on the table, or how the passive activity loss rules determine whether any of these deductions are actually usable against their day-job income. This guide covers all of it, with the numbers.

What Is Depreciation and Why STR Investors Should Care

The IRS allows owners of income-producing property to deduct the cost of that property over its useful life, reflecting the premise that buildings wear out. For residential rental property (a category that includes short-term rentals), the IRS assigns a 27.5-year useful life under the Modified Accelerated Cost Recovery System (MACRS), which has governed real property depreciation since the Tax Reform Act of 1986. The calculation method is straight-line: same amount each year, for 27.5 years.

Depreciation is a non-cash deduction. You are not spending money in the year you claim it. The property may be appreciating in market value while you simultaneously deduct its cost against your rental income. This split between economic reality (appreciation) and tax reality (depreciation) is one of the core wealth-building mechanics of real estate that other asset classes simply cannot replicate.

For a concrete sense of scale: an STR investor earning $45,000 in gross rental income with $18,000 in operating expenses has $27,000 in taxable income before depreciation. On a $350,000 property with $300,000 in depreciable basis, depreciation alone ($10,909 per year) reduces that to roughly $16,000. At a 22% marginal rate, that is $2,400 in annual tax savings from a deduction the IRS effectively provides for owning the asset. Over 27.5 years, the investor deducts the entire $300,000 basis, representing $66,000 in total tax deferral at 22%.

Calculating Your Depreciable Basis: The Land Problem

Before you calculate your annual depreciation deduction, you need to establish your depreciable basis, and that requires separating land value from building value. Land does not wear out. The IRS excludes it from depreciable basis entirely. You can depreciate the building; you cannot depreciate the dirt underneath it. (The IRS, in what passes for restraint, at least does not attempt to depreciate the air above it.)

The allocation between land and building must be reasonable and documented. Common approaches:

• Property tax assessment: Most county tax bills show a separate land value and improvement value. The percentage split is a defensible starting point. If your county assessment shows 15% land and 85% improvement, apply those percentages to your purchase price.
• Purchase appraisal: If your appraisal separately states land and improvement values, those figures carry significant weight with the IRS.
• Comparable vacant land sales: Analyzing what similar buildable lots sell for in the area provides a market-based land value that supports your allocation method.

Your depreciable basis is not simply the purchase price minus land. Closing costs attributable to acquiring the property are also included: title insurance premiums, transfer taxes, recording fees, and legal fees at closing. These add to your basis and thus to your annual depreciation deduction. Loan origination fees, mortgage points, and prepaid interest do not add to basis; those are financing costs treated separately.

Capital improvements completed after purchase (a new roof, a deck addition, an HVAC replacement) are added to your depreciable basis when completed and depreciated over their own MACRS recovery period. Repairs and routine maintenance expenses are deducted in the year incurred, not capitalized. The line between a capital improvement and a deductible repair is one of the more reliably scrutinized issues in a rental property audit, but that is a longer discussion for another day.

Worked Example: The $350,000 Vacation Rental

Picture this: You close on a $350,000 mountain cabin STR in June 2026. The county property tax assessment shows an 85.7% improvement-to-land split, which translates to roughly $300,000 building value and $50,000 land. Your closing costs attributable to the property (title fees, recording fees, attorney at closing) total $2,500.

Depreciable basis calculation:

• Purchase price allocated to building: $300,000
• Closing costs added to basis: $2,500
• Depreciable basis: $302,500

Annual straight-line depreciation:

• $302,500 / 27.5 years = $11,000 per year (rounded)

For the first partial year, the IRS applies a mid-month convention for real property: you receive a half-month of depreciation credit for the month the property is placed in service, plus full months thereafter. Placed in service in June, that is 6.5 months in 2026:

• $11,000 x (6.5/12) = $5,958 in Year 1

Years 2 through 27, you claim the full $11,000 per year. Year 28 picks up the remaining fraction. Over the full 27.5-year schedule, you deduct the entire $302,500 basis. That is the baseline, and for many first-time STR buyers, it is the only depreciation strategy they ever use. It is also the floor, not the ceiling.

Cost Segregation: How to Accelerate the Deduction

A cost segregation study is an engineering-based analysis that breaks your property into its component parts and assigns each the correct MACRS recovery period. The IRS recognizes that not everything in a building is structurally part of the building. Some components have much shorter useful lives, and they carry correspondingly faster depreciation schedules.

The major categories a cost segregation study identifies:

• 5-year personal property: Carpeting, appliances, certain specialized plumbing fixtures (removable hot tubs, whirlpools), accent and decorative lighting, furniture placed as part of the rental in some configurations, and dedicated equipment wiring. Depreciated over 5 years under MACRS.
• 7-year personal property: Certain cabinetry, countertops, and other fixtures that qualify as personal property under IRS guidance. Depreciated over 7 years.
• 15-year land improvements: Driveways, parking areas, landscaping, fencing, sidewalks, outdoor lighting, standalone decks and patios that are not structural load-bearing components. Depreciated over 15 years.
• 27.5-year structural components: Load-bearing walls, roof structure, foundation, windows, and permanent mechanical systems integral to the building. Stays on the 27.5-year schedule regardless of the study.

A typical cost segregation study on a residential STR reclassifies 20-40% of total property value into these shorter-lived categories, with the remainder on the 27.5-year building schedule.

The force multiplier is bonus depreciation. Under IRC Section 168(k), permanently restored by the One Big Beautiful Bill Act for property placed in service after January 19, 2025, any MACRS asset with a recovery period of 20 years or fewer qualifies for 100% first-year bonus depreciation. Without cost segregation, your entire STR sits on a 27.5-year schedule, which disqualifies it from bonus depreciation entirely. With cost segregation, the 5-, 7-, and 15-year components become fully deductible in the year placed in service. The two strategies are built to work in combination.

Cost segregation studies typically run $5,000 to $15,000 for a residential property and are themselves fully deductible as a professional services expense. For a study that generates $60,000 to $120,000 in first-year deductions on a property in a 24% marginal bracket, the math on the fee resolves itself quickly.

For a thorough walkthrough of what a cost segregation study includes, how to evaluate a provider, and what the analysis output actually looks like, see our cost segregation guide for STR investors.

Worked Example: Cost Segregation on the Same Property

Same property: $302,500 depreciable basis. A cost segregation study returns the following component breakdown:

• 27.5-year structural building: $181,500 (60% of basis)
• 15-year land improvements (driveway, landscaping, outdoor deck): $30,250 (10%)
• 7-year property (cabinetry, certain fixtures): $45,375 (15%)
• 5-year personal property (appliances, carpet, furniture, lighting): $45,375 (15%)

Year 1 depreciation with 100% bonus depreciation applied to all sub-20-year components:

• 27.5-year building (6.5-month mid-month convention): $181,500 / 27.5 x (6.5/12) = $3,577
• 15-year land improvements (100% bonus): $30,250
• 7-year property (100% bonus): $45,375
• 5-year personal property (100% bonus): $45,375
• Total Year 1 depreciation: $124,577

Versus the baseline without cost segregation: $5,958 in Year 1. The difference is more than $118,000 in additional first-year deductions. Same property, same year, same IRS rules.

The specific outcome for any property depends on the study results, the acquisition date relative to the OBBBA effective date, and whether the investor elects out of bonus depreciation for any asset class. A qualified CPA can model the expected deduction range for your specific property before you commission the study, giving you a reasonable cost-benefit estimate. One note on subsequent years: after the accelerated components are fully deducted in Year 1, annual depreciation going forward is just the 27.5-year building component ($181,500 / 27.5 = $6,600/year). The trade-off of front-loading deductions is lighter annual deductions in the years that follow. For most investors holding a cash-flowing STR, capturing the early deductions and compounding the tax savings is the better outcome than spreading them over 27 years at a flat rate.

Depreciation Losses and the Passive Activity Rules

Large depreciation deductions are only useful if you can actually deploy them. The passive activity loss rules (PAL rules), established under IRC Section 469, determine whether your STR depreciation reduces your current-year tax bill or accumulates as a suspended loss for future use.

The core rule: losses from passive activities can only offset income from passive activities. Rental activities are passive by default under Section 469. That means your STR depreciation losses, under the default classification, cannot offset your W-2 salary, your business income, or your investment income. They carry forward, suspended, until you generate passive income to absorb them or sell the property and release them all at once.

This would make the cost segregation example above largely academic for a salaried employee with one STR on the side. A $124,000 first-year depreciation loss sitting in a suspended passive bucket does not reduce your April tax bill. Two paths exist to avoid that trap.

Path 1: The STR Material Participation Exception

The IRS does not treat all rental activities identically for passive activity purposes. Under Treasury Regulation 1.469-1T(e)(3)(ii)(A), a rental activity is excluded from the definition of “rental activity” for passive activity purposes if the average period of customer use is 7 days or fewer.

This is the structural advantage that sets STR investors apart from long-term rental investors. If your average guest stay is 7 days or fewer (which describes essentially every Airbnb and VRBO listing), your STR activity is reclassified as a trade or business activity for passive activity purposes, not a rental activity.

The consequence: your STR losses are evaluated under the standard material participation tests for business activities (seven tests under Treasury Regulation 1.469-5T), rather than automatically treated as passive. If you materially participate in the STR, those losses are non-passive and deductible against your ordinary income in the current year.

The most commonly applied material participation tests for STR owners:

• You participated in the activity more than 500 hours during the tax year
• You participated more than 100 hours and no other individual (paid or unpaid) participated more than you did
• You were the only person who participated in the activity during the year

Track your hours in real time. Calendar entries, booking management logs, maintenance records, and guest communication logs all count toward your participation total. The IRS has increased its scrutiny of material participation claims on STR properties, and records reconstructed after the fact carry far less weight than contemporaneous documentation. Keep a log. It takes five minutes a week and is worth meaningful dollars in credibility if your return is ever examined.

For the complete framework on how the passive activity rules apply to STR investments, including the $25,000 passive loss allowance for smaller investors and how to structure your participation documentation, see our guide to short-term rental passive activity losses.

Path 2: Real Estate Professional Status

Real estate professional status (REPS) is the second route to deducting STR losses against ordinary income in the current year. Under IRC Section 469(c)(7), a taxpayer qualifies as a real estate professional if they meet both of two tests simultaneously:

1. More than 50% of their total personal services during the tax year are performed in real property trades or businesses in which they materially participate, AND
2. They perform more than 750 hours of services in qualifying real property activities during the year.

REPS removes the passive presumption from all of a qualifying taxpayer’s rental activities, provided they also materially participate in each individual property. For full-time real estate investors, property managers, and developers, meeting both tests is feasible. For a W-2 employee with a single STR, crossing 750 hours in real estate while spending more than half of all working hours there is a much heavier lift. REPS is a legitimate and powerful election, but the STR material participation exception is the more accessible path for most first-time STR buyers.

Depreciation Recapture on Sale: The Deferred Tax Bill

Depreciation is a deferral, not forgiveness. When you sell your STR, the IRS collects its portion of all the depreciation you have claimed over the years. Two recapture rules apply, at different rates, depending on the type of property.

Section 1250 unrecaptured depreciation (the building component): All depreciation taken on the 27.5-year structural portion is taxed at a maximum federal rate of 25% when you sell, regardless of your ordinary income rate or holding period. This rate applies even if your long-term capital gains rate would otherwise be 15%. If you claimed $30,000 in building depreciation over three years, that $30,000 faces a 25% federal tax at sale.

Section 1245 recapture (personal property from cost segregation): The 5- and 7-year personal property components depreciated under cost segregation are subject to Section 1245 recapture, taxed at your ordinary income rate on the gain attributable to prior depreciation. If you bonus-depreciated $90,000 in personal property in Year 1 and sell five years later, that $90,000 is recapture income at your ordinary rate (22%, 24%, 32%, or higher depending on your bracket at the time of sale).

Worked recapture example for a 5-year hold:

You buy the $350,000 STR with cost segregation. Year 1 total depreciation: $124,577. Years 2 through 5, building-only depreciation at $6,600/year (x 4 = $26,400). Total depreciation over 5 years: approximately $150,977.

• Adjusted basis at sale: $350,000 – $150,977 = $199,023
• Sale price: $440,000
• Total realized gain: $240,977
• Section 1245 recapture on personal property ($90,750 bonus-depreciated): taxed at 24% ordinary rate = $21,780
• Section 1250 unrecaptured depreciation on building ($30,227 taken over 5 years): taxed at 25% = $7,557
• Remaining long-term capital gain ($120,000 net): taxed at 15% LTCG rate = $18,000
• Estimated total federal tax on sale: approximately $47,337

The recapture bill is real and should not be a surprise at closing. But it does not mean cost segregation was the wrong call. The front-loaded tax savings in Years 1 through 5 compounded in your hands; the present value of those early deductions typically exceeds the deferred recapture tax, particularly for higher-bracket investors. Run the numbers with your CPA before dismissing the strategy on recapture grounds alone.

The full capital gains, recapture, and exit structuring framework for STR sellers, including 1031 exchanges and installment sales, is covered in our complete guide to taxes when selling a short-term rental property. Read it before you list.

Where Depreciation Fits in the Full STR Tax Picture

Depreciation is the largest ongoing non-cash tax advantage of owning rental property, but it operates within a system of other deductions: mortgage interest, property taxes, landlord insurance, STR platform fees, cleaning costs, supplies, utilities, and professional services. Together, those deductions form the tax case for STR investing that goes well beyond the revenue numbers on your booking dashboard.

The complete list of what STR owners can write off, including commonly overlooked deductions that even experienced hosts miss, is in our complete STR tax deductions guide.

If you are evaluating your first STR purchase and wondering how financing affects depreciation: the loan type does not change your depreciable basis or annual deduction. What changes is your mortgage interest deduction and cash flow. Our guide to using a HELOC or cash-out refinance for your first STR covers the financing tradeoffs.

And if you want to run the market-level numbers on whether a specific property type and location actually pencils as an investment before these tax strategies even come into play, the StaySTRA Analyzer is built for that.

Analyze any STR market free with the StaySTRA Analyzer

We do our best to keep our tax guides accurate and up to date, but tax law changes and individual circumstances vary significantly. Always verify current IRS guidance directly and consult a qualified CPA familiar with short-term rental taxation before making decisions based on this content.