What Is Bonus Depreciation Phase-Out?
The Tax Cuts and Jobs Act of 2017 allowed investors to deduct 100% of the cost of qualifying property (5-year, 7-year, and 15-year assets identified in cost segregation studies) in the first year of ownership. This was transformative — a $400,000 property with $100,000 in segregated components generated $100,000 in first-year depreciation, creating massive tax deductions for investors.
But Congress built in a sunset: bonus depreciation started phasing down in 2023. The schedule: 2022 = 100%, 2023 = 80%, 2024 = 60%, 2025 = 40%, 2026 = 20%, 2027 = 0%. For investors, this means cost segregation studies are becoming progressively less valuable each year — a property purchased in 2025 gets only 40% of the bonus depreciation benefit versus a 2022 purchase.
The phase-out doesn't eliminate cost segregation's value — accelerated depreciation over 5-15 years still beats 27.5-year straight-line. But the first-year impact is dramatically reduced. Investors who rely on massive year-one deductions to offset W-2 income need to adjust their strategies.
The bonus depreciation phase-out is the scheduled reduction of the 100% first-year bonus depreciation introduced by the Tax Cuts and Jobs Act — declining by 20% per year (80% in 2023, 60% in 2024, 40% in 2025, 20% in 2026, 0% in 2027) unless Congress extends it.
At a Glance
- What it is: The bonus depreciation phase-out is the scheduled reduction of the 100% first-ye...
- Why it matters: Directly impacts after-tax returns on rental property investments
- Key metric: Tax savings as a percentage of rental income or W-2 income
- PRIME phase: Manage
How It Works
Understanding the core mechanism. The Tax Cuts and Jobs Act of 2017 allowed investors to deduct 100% of the cost of qualifying property (5-year, 7-year, and 15-year assets identified in cost segregation s
Practical application for investors. The strategy requires careful planning and often professional guidance from a CPA specializing in real estate taxation. Timing matters — many tax strategies must be implemented before year-end to count for the current tax year. Documentation is critical for audit protection.
Scaling the benefit across a portfolio. As your portfolio grows, this strategy's impact multiplies. Each additional property adds to the cumulative tax benefit, creating a compounding advantage that accelerates wealth building.
Real-World Example
Trevor in Austin, TX. Trevor purchased a $350,000 rental in 2022 and did a cost segregation study identifying $87,500 in 5-year property. With 100% bonus depreciation, he deducted the entire $87,500 in year one — saving $30,625 at his 35% bracket. His colleague Brianna purchased an identical property in 2025 with the same cost segregation results. At 40% bonus depreciation, she deducted only $35,000 in year one (40% × $87,500), with the remaining $52,500 depreciated over 5 years. Her year-one savings: $12,250 — 60% less than Trevor's. The remaining $18,375 in deductions came over years 2-5. Both investors got the same total depreciation, but Trevor's front-loaded benefit provided a larger interest-free loan from the IRS for 4+ years.
Pros & Cons
- Directly reduces tax liability, increasing after-tax returns on real estate investments
- Legal and IRS-compliant when properly structured and documented
- Benefits compound across multiple properties and tax years
- Can offset W-2 income under the right circumstances
- Preserves more capital for reinvestment into additional properties
- Requires professional tax advice (CPA fees of $500-$3,000/year)
- Complex rules create compliance risk if not properly followed
- Tax laws change frequently — strategies may need annual adjustment
- Some benefits are temporary or phase out over time
Watch Out
- Consult a real estate CPA. Generic tax advisors often miss real estate-specific strategies. Find a CPA who specializes in rental property taxation and owns investment property themselves.
- Document everything. The IRS requires substantiation for all deductions. Keep records of expenses, hours logged (for REPS), cost segregation reports, and 1031 exchange documentation for at least 7 years.
- Plan for recapture. Every depreciation deduction creates a future recapture liability. Factor this into your exit strategy — 1031 exchanges and stepped-up basis at death are the primary defenses.
The Takeaway
The bonus depreciation phase-out is the scheduled reduction of the 100% first-year bonus depreciation introduced by the Tax Cuts and Jobs Act — declining by 20% per year (80% in 2023, 60% in 2024, 40% in 2025, 20% in 2026, 0% in 2027) unless Congress extends it. Understanding and implementing this strategy can save real estate investors thousands to tens of thousands of dollars annually. Work with a qualified real estate CPA, maintain meticulous records, and plan proactively rather than reactively. The investors who pay the least tax aren't the ones who earn the least — they're the ones who plan the best.