How the Big Beautiful Bill Changes Bonus Depreciation and Section 179 for Real Estate Investors
If you own rental property, the One Big Beautiful Bill Act is the most significant tax legislation since the Tax Cuts and Jobs Act of 2017. Two provisions in particular — the restoration of 100% bonus depreciation and a major increase to the Section 179 expensing limit — could save real estate investors tens of thousands of dollars per property.
Here is what changed, what it means for your portfolio, and how to take advantage of it.
Bonus Depreciation Is Back to 100%
The Problem It Solves
Under the original TCJA, investors could immediately deduct 100% of the cost of qualifying assets placed in service. That was incredibly powerful when paired with a cost segregation study — suddenly, components like appliances, flooring, landscaping, and certain building systems could be written off in year one instead of over 27.5 or 39 years.
But that 100% rate was temporary. Congress built in a phase-down schedule:
| Tax Year | Bonus Depreciation Rate |
|---|---|
| 2017–2022 | 100% |
| 2023 | 80% |
| 2024 | 60% |
| 2025 | 40% |
| 2026 | 20% |
| 2027+ | 0% |
Every year, investors were losing more of this powerful deduction. By 2025, you could only write off 40 cents on the dollar. The incentive to run a cost segregation study was fading.
What the Big Beautiful Bill Does
The legislation restores 100% first-year bonus depreciation, effective retroactively. That means qualifying property placed in service is once again fully deductible in the year it is acquired.
For real estate investors, this is enormous. A cost segregation study on a $500,000 property might identify $150,000–$200,000 in components eligible for bonus depreciation. At 100%, that entire amount is a year-one deduction. At the old 40% rate, you would have only captured $60,000–$80,000 up front.
What Qualifies
Bonus depreciation applies to tangible property with a recovery period of 20 years or less. For real estate, that typically includes:
- 5-year property: Appliances, carpeting, certain fixtures
- 7-year property: Office furniture, some equipment
- 15-year property: Land improvements (parking lots, landscaping, fencing, sidewalks)
- Qualified improvement property (QIP): Interior improvements to nonresidential buildings
It does not apply to the building structure itself (27.5-year residential or 39-year commercial) or land.
Section 179 Gets a Major Upgrade
Old Limits vs. New Limits
Section 179 lets you immediately expense the cost of qualifying business property instead of depreciating it over time. It has always had a dollar cap, and the Big Beautiful Bill significantly raises it:
| Previous Law (2025) | Big Beautiful Bill | |
|---|---|---|
| Maximum deduction | ~$1.25 million | $2.5 million |
| Phase-out threshold | ~$3.13 million | $4 million |
Both amounts are now indexed for inflation going forward.
Why This Matters for Real Estate
Section 179 is especially relevant for investors who make improvements to nonresidential (commercial) property. Qualifying items include:
- HVAC systems
- Roofing
- Fire protection and alarm systems
- Security systems
Since 2018, these items have been eligible for Section 179 expensing on nonresidential property. With the higher cap, more investors can fully expense major capital improvements without worrying about hitting the limit — especially those managing larger portfolios.
Section 179 vs. Bonus Depreciation
Both tools let you accelerate deductions, but they work differently:
- Bonus depreciation has no dollar cap but applies only to new or newly acquired property
- Section 179 has a dollar cap but offers more flexibility (you can choose how much to expense)
- Section 179 cannot create a loss — it is limited to your business income
- Bonus depreciation can create or increase a net operating loss (NOL)
Most investors benefit from using both strategically. Your CPA can help determine the optimal split.
Other Provisions Real Estate Investors Should Know
The Big Beautiful Bill includes several other changes relevant to property investors:
QBI Deduction Made Permanent
The 20% Qualified Business Income deduction under Section 199A — which many rental property owners claim on pass-through income — was set to expire after 2025. The bill makes it permanent. If you own properties through an LLC, S-Corp, or as a sole proprietor, this locks in a significant ongoing tax benefit.
SALT Cap Increase
The state and local tax (SALT) deduction cap has been raised from $10,000 to approximately $30,000–$40,000. Investors in high-tax states like New York, California, and New Jersey will benefit from the ability to deduct more of their state income and property taxes.
Estate Tax Exemption Extended
The doubled estate and gift tax exemption (approximately $13.6 million per individual) has been made permanent. For investors building generational wealth through real estate, this means more of your portfolio can pass to heirs without federal estate tax.
What You Should Do Now
1. Run a Cost Segregation Study
With 100% bonus depreciation restored, cost segregation is more valuable than ever. If you acquired property in the last few years and did not run a study, you may be able to claim retroactive deductions through a “look-back” study.
RealBooks includes AI-powered cost segmentation that estimates your accelerated depreciation potential automatically — no $5,000–$15,000 engineering study required to get started.
2. Review Recent Capital Improvements
Any major improvements you have made to commercial properties (HVAC, roofing, fire systems) may now qualify for the higher Section 179 limit. Work with your CPA to amend prior returns if applicable.
3. Update Your Tax Projections
If you have been planning around the old phase-down schedule, your estimated tax liability may have changed significantly. Use RealBooks to model your updated deductions across your entire portfolio.
4. Talk to Your CPA
While RealBooks gives you the data and projections, your CPA should make the final call on how to structure your deductions — especially when balancing bonus depreciation, Section 179, and passive activity rules.
The Big Beautiful Bill represents a generational opportunity for real estate investors to accelerate wealth building through the tax code. Whether you own one rental or a portfolio of 50, these provisions put more money back in your pocket — and the sooner you act, the more you stand to save.
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