What is the One Big Beautiful Bill Act?

The One Big Beautiful Bill Act, Public Law 119-21, signed July 4, 2025, restored a permanent 100% bonus depreciation for qualified property acquired and placed in service after January 19, 2025, and extended key TCJA provisions benefiting real estate investors. Property acquired before January 20, 2025 and placed in service in 2025 is limited to 40%.

How should investors respond to the 100% bonus depreciation for property acquired after January 19, 2025?

Investors should commission cost segregation studies on existing properties to capture catch-up depreciation, accelerate planned acquisitions to maximize first-year deductions, and coordinate with tax advisors to optimize timing of property placed-in-service dates.

Does the bill affect cost segregation strategy?

Significantly. With 100% bonus depreciation, which applies to qualified property acquired and placed in service after January 19, 2025, every 5-, 7-, and 15-year asset identified through cost segregation can be fully written off in year one. Property acquired before January 20, 2025 and placed in service in 2025 is limited to 40%, so the deduction on those assets is smaller.

Your 2025 Action Plan: Maximizing the One Big Beautiful Bill for Real Estate Investors

Q: What is the timeline for implementing the new tax benefits?

The 100% rate applies to qualified property acquired and placed in service after January 19, 2025. There is no deadline to race: section 70301 struck the termination clause and deleted the phase-down paragraphs of IRC 168(k), so the rate does not step down on a schedule. What decides your rate is the acquisition date. Property acquired before January 20, 2025 and placed in service in 2025 is limited to 40%.

July 20, 2025 · 12 minute read

Matthew Gigantelli

Lead Cost Seg Engineer · ASCSP M009-25

🎯 Quick Win Alert

The One Big Beautiful Bill Act made 100% bonus depreciation permanent for qualified property acquired and placed in service after January 19, 2025. Property in that branch can produce immediate tax deductions on the order of $30,000 to $150,000 or more per property in the first year, depending on basis, allocation and marginal rate. Property acquired before January 20, 2025 and placed in service in 2025 is limited to 40%. Here's the step-by-step playbook.

Phase 1: Immediate Action Items (Next 30 Days)

1. Audit Your Current Portfolio

Before acquiring new properties, maximize the benefits from what you already own. Create a spreadsheet with the following information for each property acquired after January 19, 2025:

Portfolio Audit Checklist:

Property Address & Purchase Date - Only properties placed in service after 1/19/25 qualify
Purchase Price - Your basis for cost segregation calculations
Property Type - Airbnb, multifamily, commercial, etc.
Last Cost Segregation Study Date - Or note "Never Completed"
Estimated Eligible Assets - Use 30-40% of purchase price as starting estimate
Current Tax Situation - High earners benefit most from immediate deductions

2. Prioritize Properties for Cost Segregation

Not all properties are created equal for cost segregation benefits. Focus your efforts on properties with the highest potential returns:

Property Type	Priority Level	Typical Eligible %	Best Candidates
Strip Malls/Retail	HIGH	35-45%	Large parking areas, tenant improvements
Multifamily (50+ units)	HIGH	30-40%	Newer construction, amenities
Furnished Airbnb	HIGH	25-35%	High-end furnishings, recent renovations
Office Buildings	MEDIUM	25-35%	Recent build-outs, tech infrastructure
Single Family Rentals	MEDIUM	15-25%	Properties over $400k, recent renovations

3. Get Professional Cost Segregation Quotes

Don't delay on this step. Quality cost segregation firms are experiencing unprecedented demand due to the OBBB. Start the process now to secure your spot.

Questions to Ask Cost Segregation Providers:

What's your current turnaround time for studies?
Do you provide a benefit guarantee or estimate?
Are your engineers licensed in my property's state?
Can you provide 3 recent references for similar properties?
What's included in your IRS audit support?
Do you offer payment plans or success-based fees?

Phase 2: Strategic Acquisition Planning (Next 90 Days)

1. Time Your 2025 Acquisitions Strategically

The OBBB creates unique timing opportunities. Properties placed in service by December 31, 2025, qualify for 100% bonus depreciation on your 2025 tax return. This means you could potentially offset your 2025 W-2 income with real estate depreciation.

🚨 Critical Timing Considerations

Q1 2025 Acquisitions: Maximum time for cost segregation studies and tax planning

Q2-Q3 2025 Acquisitions: Ideal timing - property stabilization before year-end

Q4 2025 Acquisitions: Rush timing for cost segregation studies, but still beneficial

Early 2026: Property acquired and placed in service after January 19, 2025 still qualifies for 100% bonus depreciation, filed on the 2026 tax return

2. Target High-Impact Property Features

When evaluating new acquisitions, prioritize properties with features that maximize cost segregation benefits:

High-Value Features to Target

Large parking lots and driveways
Extensive landscaping and hardscaping
Recently updated HVAC systems
High-end appliance packages
Custom flooring (hardwood, tile)
Built-in furniture/fixtures
Outdoor amenities (pools, decks)
Specialized lighting systems

Lower-Value Features

Older properties with original components
Minimal land improvements
Basic builder-grade everything
Small or no parking areas
Properties on small lots
Unfurnished rentals
Minimal landscaping
Recent major renovations already depreciated

3. Structure Acquisitions for Maximum Tax Benefit

Short-Term Rental Material Participation Strategy

For Airbnb and vacation rental investors, the material participation rules under the OBBB create unprecedented opportunities to offset W-2 income:

Requirement 1: Average guest stay ≤ 7 days

Requirement 2: You spend >100 hours annually on the property

Requirement 3: You spend more time than anyone else on the property

Result: Bonus depreciation losses offset active income (W-2 wages, business income)

Phase 3: Implementation & Documentation (Ongoing)

1. Maintain Detailed Records

The IRS will scrutinize these large depreciation deductions. Proper documentation is your best defense:

Essential Documentation Checklist:

Purchase agreements with detailed property descriptions
Closing statements showing allocated costs
Professional cost segregation studies with engineer certifications
Property photos documenting qualifying assets
Receipts for improvements made after acquisition
Time logs for short-term rental material participation
Appraisals supporting asset valuations
Depreciation schedules prepared by your tax professional

2. Coordinate with Your Tax Professional

The complexity of the OBBB provisions requires expert guidance. Don't attempt this without qualified help:

Find the Right Tax Pro

CPA with real estate specialization
Experience with cost segregation
Knowledge of material participation rules
Proactive tax planning approach
Available for year-round consultation

Schedule Quarterly Reviews

Q1: Plan acquisitions and studies
Q2: Review YTD depreciation impact
Q3: Adjust estimated tax payments
Q4: Finalize year-end strategies

Real-World Implementation Example

Case Study: Sarah's $2M Multifamily Acquisition

Situation: Software engineer earning $200K W-2, acquiring 50-unit apartment complex in March 2025

Purchase Price: $2,000,000

Cost Segregation Results: $650,000 in eligible assets (32.5%)

Tax Bracket: 35% (federal + state)

Year 1 Tax Savings: $227,500 ($650,000 × 35%)

Implementation Timeline:

March: Property closes, cost segregation study ordered
May: Study completed, depreciation schedules updated
June: Adjusted estimated tax payments reduced
December: $227,500 in tax savings realized

Net Effect: $227,500 cash back in pocket, improving cash-on-cash return by 45%

Your 30-60-90 Day Action Plan

Next 30 Days

Complete portfolio audit for post-1/19/25 properties
Get 3 cost segregation quotes for your highest-priority properties
Schedule consultation with qualified real estate tax professional
Begin documentation system for all qualifying expenses

Next 60 Days

Start cost segregation studies on existing properties
Identify and analyze acquisition targets with high cost seg potential
Implement material participation tracking for short-term rentals
Adjust estimated tax payments based on projected depreciation

Next 90 Days

Execute on highest-priority acquisitions
Complete initial cost segregation studies
File amended returns if beneficial for 2024 properties
Plan Q4 acquisition strategy to maximize 2025 benefits

What Actually Decides Your Rate

There is no phase-down left to race. Section 70301 of the OBBB struck the termination clause and deleted the phase-down paragraphs of IRC 168(k), so the rate no longer erodes annually the way it did from 2023 to 2025. What decides your rate is which branch the property falls in, and that is settled by the acquisition date: 100% for qualified property acquired and placed in service after January 19, 2025, and 40% for property acquired before January 20, 2025 and placed in service in 2025.

Property placed in service during a tax year is reported on that year's return, so the timing question is about which return the deduction lands on, not about a closing window.

Key Resources & References

Legislative Sources:

Cost Segregation Resources:

Material Participation Guidance:

Professional Services:

Ready to Maximize Your Tax Savings?

The One Big Beautiful Bill changed the depreciation math for real estate. The rate is settled by your acquisition date rather than by how fast you move, so the useful first step is establishing which branch each property falls in.

Start with a professional cost segregation study to identify your eligible assets, then implement the strategies outlined in this action plan. The tax savings you generate in 2025 alone could fund your next acquisition.