OBBBA Bonus Depreciation for Rental Property 2026

Bonus depreciation jumped to 100% for residential rental property placed in service after January 19, 2025 under the One Big Beautiful Bill Act (OBBBA). This guide walks you through claiming the full deduction, calculating your tax benefit, and coordinating with cost segregation to maximize savings in 2026.

Why this matters

Bonus depreciation has fluctuated for years. The Tax Cuts and Jobs Act (TCJA) started at 100% in 2018, then phased down 20% annually beginning in 2023, hitting 60% in 2026 under the old rules. The OBBBA, signed January 19, 2025, restored 100% bonus depreciation retroactively for property placed in service after that date. For high-earning residential rental investors, this is the largest tax deduction opportunity in your property's first year of ownership.

However, bonus depreciation alone doesn't tell the full story. If you claim 100% bonus depreciation on the entire property cost basis, you've accelerated all future depreciation into year one, leaving nothing to deduct in years two through 27. Cost segregation reclassifies portions of your property into shorter recovery periods (5, 7, 15 years), allowing you to claim bonus depreciation on those segments year after year as bonus depreciation rules cycle. The combination is what creates extreme tax offsets for W-2 earners.

What you'll need

Before you claim OBBBA bonus depreciation, gather the following:

• Purchase agreement or closing statement with the acquisition date of your rental property
• Basis calculation worksheet showing total acquisition cost (purchase price plus capitalized closing costs, improvements, and land)
• Placed-in-service date documentation (occupancy, first guest, first tenant lease, or active offer for occupancy)
• Cost segregation study (optional but recommended; accelerates and reclassifies depreciation)
• Form 4562 (Depreciation and Amortization) and your CPA or tax preparer
• IRS Publication 946 (How to Depreciate Property) for reference
• Section 179 election forms if claiming immediate expensing on certain assets

Virtual Cost Segregation provides a full engineering-based cost segregation report ($2,200 flat fee, delivered in 3–5 business days) that itemizes which property components qualify for 5, 7, and 15-year depreciation. The report is audit-defensible and prepared by engineers familiar with IRS cost segregation guidelines. Your CPA then uses that report to file Form 3115 (Application for Change in Accounting Method) and claim the reclassified depreciation on your return.

Step 1: Confirm your property qualifies for OBBBA bonus depreciation

Bonus depreciation under OBBBA applies only to new property placed in service after January 19, 2025. The IRS definition of "new property" is strict: the property must not have been previously used or owned by anyone. A newly constructed rental home qualifies. A newly purchased Airbnb property does not, even if it's brand-new construction, once someone else has owned or used it.

Exceptions exist: property manufactured or constructed by you (the taxpayer) for your own use qualifies, even if acquired used. Property acquired used but substantially reconstructed by you may also qualify under specified reconstruction rules.

Check your acquisition date against January 19, 2025. If you closed on a rental property on January 20, 2025 or later, OBBBA bonus depreciation at 100% applies. If you closed before January 19, 2025, the old phase-down rules apply: 80% bonus depreciation for 2025, 60% for 2026, and so on. Bonus depreciation phases out completely after 2026 unless Congress extends it.

Once you confirm your property qualifies, move to the next step.

Step 2: Calculate your total acquisition cost basis

Bonus depreciation applies to your basis, not the purchase price. Basis includes:

• Purchase price
• Capitalized closing costs (title insurance, appraisal, lender fees, recording fees)
• Capitalized improvements made before the placed-in-service date
• Capitalized repairs to make the property ready for occupancy
• Architectural and engineering fees incurred before acquisition

Basis does not include land. Land is non-depreciable. If your purchase agreement shows a combined price, you must allocate the purchase price between land and building using a professional appraisal or the purchase agreement's stated allocation.

Example: You purchase an Airbnb property for $500,000. The appraisal allocates $100,000 to land and $400,000 to the building. Closing costs are $8,000 (capitalized). Your depreciable basis is $408,000 ($400,000 building + $8,000 closing costs).

Under OBBBA bonus depreciation, you may deduct 100% of that $408,000 in year one, generating $408,000 in deductions. At a 37% tax bracket, that's a $150,960 tax benefit in your first year of ownership. No site visit required—this is purely paper-based.

Step 3: Establish your placed-in-service date

Bonus depreciation (and all depreciation) begins when your property is placed in service. For rental property, placed in service means:

• The property is ready and available for occupancy
• You've started accepting guests (Airbnb, VRBO) or tenants (long-term rental)
• The property is actively offered for rental or occupied

You do not need to complete all repairs or renovations. You do not need to have your first paying guest. You only need the property ready for its intended use and available for occupancy.

Document your placed-in-service date with evidence: your first Airbnb listing date, your first tenant's lease start date, or your property manager's occupancy certification. This date is critical because depreciation starts here, and if the IRS audits, you must substantiate it.

Step 4: File Form 4562 to claim bonus depreciation

You claim bonus depreciation on Form 4562 (Depreciation and Amortization), filed with your tax return for the year the property was placed in service. Form 4562 has two sections:

• Section I: Bonus Depreciation — list the property, acquisition date, placed-in-service date, basis, and bonus depreciation percentage (100% under OBBBA)
• Section II: Regular Depreciation — list any property not eligible for bonus depreciation

For a rental property placed in service in 2025, you file Form 4562 with your 2025 tax return (due April 15, 2026). For 2026 acquisitions, you file with your 2026 return (due April 15, 2027).

Critical: You must file Form 4562. If you don't file it, you cannot claim bonus depreciation, even if you're otherwise eligible. Many taxpayers miss this and lose the deduction entirely.

Your CPA prepares Form 4562 based on your property details and cost segregation study (if you commissioned one). If you claim bonus depreciation without a cost segregation study, the IRS assumes you're depreciating the entire property basis as building and depreciating it straight-line over 27.5 years for residential rental property. Bonus depreciation accelerates that, but does not reclassify components into shorter periods.

Step 5: Combine bonus depreciation with cost segregation for maximum tax benefit

Here's where OBBBA gets powerful: bonus depreciation and cost segregation are complementary, not redundant.

Bonus depreciation is a tax law that lets you deduct a percentage of your basis in year one. Under OBBBA, that percentage is 100% for new property placed in service after January 19, 2025.

Cost segregation is an engineering study that reclassifies building components into shorter depreciable lives. Instead of depreciating the entire property over 27.5 years, cost segregation might separate it into:

• 5-year property (appliances, HVAC systems, flooring): 20% of basis
• 7-year property (carpeting, landscaping): 15% of basis
• 15-year property (certain improvements, qualified leasehold): 10% of basis
• 27.5-year property (remaining building): 55% of basis

Now apply 100% OBBBA bonus depreciation to each segment. In year one, you deduct 100% of the 5-year, 7-year, and 15-year components immediately. That's 45% of your basis in year one. You still depreciate the 27.5-year component straight-line over 27.5 years, claiming bonus depreciation on it too if you elect to.

Example: You purchase a $500,000 Airbnb (basis $408,000 after allocating $100,000 to land). A cost segregation study reclassifies it as:

• 5-year property: $82,000 (20%)
• 7-year property: $61,000 (15%)
• 15-year property: $41,000 (10%)
• 27.5-year property: $224,000 (55%)

Year one deductions:

• 5-year bonus depreciation: $82,000
• 7-year bonus depreciation: $61,000
• 15-year bonus depreciation: $41,000
• 27.5-year depreciation (straight-line): $8,145 ($224,000 ÷ 27.5)
• Total year-one deduction: $192,145

At a 37% tax bracket, that's $71,094 in tax savings in your first year alone. Without cost segregation, you'd only deduct $408,000 × 100% = $408,000, but without reclassification, years 2–27 would be nearly zero (since you've claimed 100% of basis in year one). Cost segregation spreads the benefit across the property's life and ensures you're capturing every dollar of accelerated depreciation.

Step 6: File Form 3115 if your property was placed in service before 2025

If you purchased your rental property before January 19, 2025, and now want to implement a cost segregation study, you must file Form 3115 (Application for Change in Accounting Method) with the IRS. This form requests permission to change your depreciation method retroactively.

Form 3115 is not required for 2025 property placed in service after January 19, 2025 — you simply claim the reclassified depreciation on your initial return. But for older property, cost segregation is treated as a change in accounting method, and you must disclose it to the IRS and your state tax authority.

File Form 3115 with your amended return or your current-year return, depending on when you commissioned the study. Your CPA handles this; do not attempt it alone. Missing Form 3115 does not disqualify your study, but it can trigger IRS inquiry. With Form 3115 properly filed alongside your audit-defensible cost segregation report, the IRS recognizes the reclassification and applies it to all affected years.

Step 7: Work with your CPA to implement bonus depreciation on your return

Bonus depreciation is claimed on your tax return, not filed separately with the IRS. Your CPA (or tax preparer) uses your cost segregation study to populate Form 4562 and Schedule C (for self-employed rental income) or Schedule E (Supplemental Income and Loss) depending on your business structure.

Your role: provide your CPA with:

1. Purchase agreement and closing statement
2. Placed-in-service documentation
3. Cost segregation study (if commissioned)
4. A list of any bonus depreciation you've already claimed on prior returns (to avoid double-dipping)

Your CPA's role: prepare Form 4562, determine which segments qualify for bonus depreciation versus regular depreciation, ensure the deduction aligns with your filing status and income limitations, and substantiate the position in case of audit.

Key point: You cannot claim bonus depreciation and regular depreciation on the same property component. Once you elect bonus depreciation on a 5-year segment, you cannot also deduct it straight-line over 5 years. The election is made when you file your return; there's no separate bonus depreciation election form. Filing Form 4562 with the bonus depreciation claimed is the election.

Troubleshooting

Problem: Your property was placed in service before January 19, 2025, and you want to claim bonus depreciation now.

Old rules apply. Bonus depreciation is 80% for property placed in service in 2025, 60% for 2026, and phases down further in later years. You cannot retroactively claim 100% OBBBA bonus depreciation on property that was already in service before the law's effective date. However, you can still file Form 3115 to implement cost segregation retroactively and claim the higher bonus percentage on the reclassified components going forward.

Problem: The IRS challenges your placed-in-service date.

You claimed bonus depreciation on a property you say was placed in service January 20, 2025, but your records are weak. Gather contemporaneous evidence: emails offering the property for rent, Airbnb listing screenshots, tenant lease, property manager correspondence, or occupancy permits. If you cannot document the date to the IRS's satisfaction, you may lose the bonus depreciation deduction. Always document placed-in-service dates when you acquire the property.

Problem: You claimed bonus depreciation but later discovered the property doesn't qualify as "new" under the IRS definition.

If the property was previously used, it does not qualify for bonus depreciation under OBBBA. You must file an amended return (Form 1040-X) and remove the bonus depreciation claimed, then claim regular straight-line depreciation instead. This typically results in owing back taxes plus interest and penalties. Confirm new property status before claiming bonus depreciation.

Problem: Your cost segregation study shows a much higher reclassification than you expected (e.g., 60% into shorter-lived assets).

This is common and correct. Cost segregation studies are detailed engineering analyses. A 60% reclassification on a rental property is realistic, especially if the property includes HVAC, appliances, flooring, or exterior improvements. If the study seems aggressive, request a peer review from another cost segregation firm or ask your CPA to flag any components that appear overvalued. But do not discard a legitimate study just because the reclassification is high—that's the point of cost segregation.

Problem: You want to claim bonus depreciation but haven't commissioned a cost segregation study yet.

You can claim bonus depreciation without a cost segregation study. You'll simply depreciate the entire property over 27.5 years (residential rental) and claim 100% bonus depreciation on the full basis in year one. However, without cost segregation, you forfeit the reclassification benefit and depreciation deductions in years 2–27 become minimal. A cost segregation study ($2,200 flat fee) pays for itself many times over if you're in a high tax bracket and the property basis is above $250,000. Most residential rental investors benefit from pairing the two.

Tools and resources

• How to Catch Up Missed Depreciation With Form 3115
• Bonus Depreciation § 179 & § 179D | IRS Cost Segregation ATG — IRS guidance on bonus depreciation phases and qualifications
• IRS Publication 946 (How to Depreciate Property) — official depreciation rules and forms
• Form 4562 (Depreciation and Amortization) — file with your tax return
• Cost Segregation Study for Short-Term Rental Property — implementation for Airbnb and VRBO

What to do next

If you own a residential rental property placed in service after January 19, 2025, you're eligible for 100% bonus depreciation under OBBBA. Before filing your 2025 or 2026 return, commission a cost segregation study to identify which property components qualify for accelerated depreciation. The engineering-based report gives you and your CPA the roadmap to claim every dollar of deduction you're entitled to. Request a free manual savings estimate to see how much bonus depreciation and cost segregation could offset your W-2 income in your first year of ownership.

FAQ

One last thing

The IRS Cost Segregation Audit Technique Guide (Publication 5653) confirms that engineering-based cost segregation studies are audit-defensible when supported by qualified engineer reports and contemporaneous documentation. The IRS does not dispute the method—only whether your study properly allocated property components and whether the report is adequately supported. File your cost segregation study alongside Form 3115 or Form 4562, keep a copy, and provide it to your CPA and the IRS if audited. The study is your defense.

Related guides

• Accelerated Depreciation for Rental Property Owners
• How to Calculate Bonus Depreciation Recapture
• STR Loophole Explained for W-2 Earners