For commercial real estate investors and brokers, this isn’t a normal tax season.
The 2025 tax law overhaul – passed under the so-called “One Big Beautiful Bill” – quietly rewrote some of the most important rules governing depreciation, interest deductibility, and pass-through income. Now that we’re in January 2026, those changes are no longer theoretical. They are actively impacting:
- How deals are modeled
- How properties are sold
- How assets are valued
- And how much cash actually stays in your pocket
If you’re using last year’s playbook, you’re already behind.
This tax season is not about filling out forms – it’s about protecting deal economics and timing exits correctly in a new tax environment.
What Actually Changed in the 2025 Tax Code
Several major levers moved at once, and when they combine, they materially alter how CRE projects perform after tax.
1. 100% Bonus Depreciation Is Back – Permanently
The 2025 law restored and made permanent 100% bonus depreciation for qualifying tangible property placed in service after January 19, 2025.
That means large portions of:
- Equipment
- Fixtures
- Interior buildouts
- Certain tenant improvements
can once again be fully expensed in year one instead of depreciated over decades.
For value-add, redevelopment, and equipment-heavy properties, this pulls massive deductions forward and radically improves early-year cash flow.
2. Section 179 Expensing Was Expanded
The Section 179 deduction cap increased dramatically — allowing far more business property to be immediately expensed instead of depreciated.
For CRE owners, this expands the scope of what can be written off upfront, particularly in:
- Retail
- Industrial
- Medical
- Hospitality
- Owner-occupied commercial properties
This further amplifies the front-loaded tax benefit of renovations and improvements.
3. Interest Deductibility Became More Favorable
The law also softened limitations under IRC Section 163(j) for real estate trades and businesses.
That means more interest expense is now deductible, improving the economics of:
- Leveraged acquisitions
- Construction loans
- Bridge financing
- Refinances
In a high-rate environment, this matters – a lot.
4. QBI & SALT Rules Shifted
The Qualified Business Income (QBI) deduction was increased from 20% to 23% for qualifying pass-through entities, improving after-tax income for:
- Partnerships
- S-corps
- LLC-structured real estate owners
At the same time, state and local tax (SALT) caps were adjusted upward for many taxpayers, restoring more deductibility for high-tax-state investors.
5. A Key Energy Incentive Was Removed
One major casualty of the 2025 rewrite was Section 179D, which had provided lucrative deductions for energy-efficient commercial building upgrades.
That incentive is now eliminated or severely scaled back – removing a tax shelter many owners had relied on for HVAC, lighting, and building system upgrades.
Why This Is Bigger Than “More Deductions”
This tax rewrite doesn’t just change how much you deduct – it changes how deals should be structured and timed.
When you can expense large portions of a property upfront, it alters:
- Hold vs. sell decisions
- How improvements are classified
- How assets are allocated at sale
- How the IRS views your books years later
Smart operators are now modeling:
- Whether to sell sooner to lock in deductions
- Whether to reclassify assets more aggressively
- How to allocate purchase price between real vs personal property
- How today’s write-offs will be scrutinized in 2030
The tax code is now rewarding timing, velocity, and structure – not just long-term holding.
What CRE Investors & Brokers Should Be Doing Right Now
This filing season is where strategy turns into money. Here’s what matters most:
Run Cost Segregation – Early and Often
With bonus depreciation restored, cost segregation becomes one of the most powerful tools again. Properties placed in service in 2025 or early 2026 can generate outsized deductions when assets are properly reclassified.
Model Hold vs. Sell Under the New Rules
Deals penciled under old tax assumptions may now perform very differently. A sale in late 2025 versus mid-2026 can materially change after-tax returns.
Structure Deals With Tax Allocation in Mind
Brokers and sponsors should think carefully about how deals allocate value between:
- Real property
- Personal property
- Improvements
- Equipment
Those allocations now drive tax outcomes more than ever.
Keep Fallback Strategies Ready
While 1031 exchanges still exist, political risk remains. DSTs, installment sales, and deferred sale trusts should be part of every serious investor’s exit planning.
Work With Your CPA Upstream
These changes are too important to handle retroactively. Run projections now. Flag election-year risk. Model how future law changes could impact five-year holds.
Final Thoughts
The 2025 tax rewrite was not minor tinkering – it was a system-level reset.
Those who adapt early can dramatically increase after-tax returns.
Those who ignore it may lose value without realizing why.
Tax season 2026 is where that gap starts to show.
