The One Big Beautiful Bill Act (OBBBA), signed into law on July 4, 2025, introduced sweeping federal tax changes that impact multiple industries—including construction, real estate development, and infrastructure. For contractors, developers, and construction firms, the legislation creates both new tax planning opportunities and important changes to longstanding incentives.
Understanding these changes is important to maximize deductions, manage project costs, and plan future investments.
1. Permanent 100% Bonus Depreciation
One of the most significant benefits is the restoration of permanent 100% bonus depreciation. This allows businesses to immediately deduct the full cost of qualifying equipment and capital assets rather than depreciating them over several years.
For contractors, this change can significantly improve cash flow by allowing immediate expensing for:
- Heavy machinery and construction equipment
- Technology upgrades
- Vehicles and tools used on job sites
2. Permanent Pass-Through Business Deduction
Many construction firms operate as pass-through entities such as LLCs, partnerships, or S-corporations. The OBBBA makes the 20% Qualified Business Income (QBI) deduction under Section 199A permanent, providing long-term tax relief for these businesses.
This deduction allows eligible business owners to deduct up to 20% of qualified income from federal taxes, improving profitability, and creating more predictable long-term tax planning.
3. Expanded Equipment Expensing Limits
The bill also increases the Section 179 expensing limit to $2.5 million, with a phase-out threshold of $4 million. This allows construction companies to immediately deduct the cost of large equipment purchases, including:
- Excavators and bulldozers
- Trucks and fleet vehicles
- Site technology and specialized tools
4. Expanded Housing and Development Incentives
The law expands several tax incentives that support development and construction projects, including:
- Increased Low-Income Housing Tax Credit (LIHTC) allocations to states by 12%
- Reduced bond financing requirements from 50% to 25% to qualify for certain housing credits
- Permanent authorization of the New Markets Tax Credit (NMTC) program for investment in underserved communities.
5. Changes to Energy and Green Building Incentives
While some incentives expanded, others are being phased out. The OBBBA eliminates the Section 179D deduction for energy-efficient commercial buildings for projects that begin construction after June 30, 2026.
This deduction previously allowed building owners and design professionals to claim up to several dollars per square foot for qualifying energy-efficient upgrades. Additionally, several renewable energy incentives—including certain wind and solar credits—are being phased out or accelerated toward sunset dates.
Developers pursuing sustainable construction projects may need to accelerate timelines to qualify under existing incentive deadlines.
6. Greater Flexibility for Financing and Interest Deductions
The law also adjusts interest-deduction rules by allowing depreciation and amortization to be added back when calculating adjusted taxable income.
This change increases the amount of interest that construction and real estate firms may deduct, improving financing flexibility for large development projects.
What Construction Firms Should Do Next
The One Big Beautiful Bill Act introduces both opportunities and challenges for the construction industry. Companies should evaluate how the new law affects:
- Equipment investment strategies
- Development timelines
- Affordable housing projects
- Tax credit eligibility
- Financing and capital planning
With many provisions taking effect between 2025 and 2027, proactive tax planning is essential.
Ready to Explore How OBBBA provisions can Help Your Business?
Working with Tax Credit Group can help your construction business identify available incentives, maximize deductions, and ensure compliance under the new legislation. Contact us to ensure you take advantage of these tax credit savings in 2026.
