2026 is shaping up to be a pivotal year for US construction. Expiring energy incentives, shifting depreciation rules and new reporting options are quietly changing how projects should be structured, forecasted and funded. OBBBA construction tax changes are not a distant concern. They are already reshaping how contractors, developers and project owners plan builds, allocate capital and report income. The One Big Beautiful Bill Act (OBBBA) introduced sweeping revisions to the US tax code, and the construction industry sits squarely in its crosshairs.
Some of these changes are significant opportunities, particularly for enterprises investing in equipment and domestic manufacturing facilities. Others are hard deadlines that, if missed, will permanently lock projects out of major incentives. Understanding each provision, and acting quickly, is what separates construction leaders who protect margins from those who leave money behind.
This blog covers the key OBBBA construction provisions for 2025 and 2026, what they mean for your projects, and what decisions need to happen now.
Key OBBBA Construction Tax Changes You Need to Know
The OBBBA introduces both permanent reforms and time-limited windows. Here is a clear breakdown of what changed, who it affects, and what the numbers look like.
1. 100% Bonus Depreciation: Permanently Restored for OBBBA Construction Equipment
One of the most impactful changes in OBBBA construction finance is the permanent restoration of 100% bonus depreciation. For qualifying property placed in service after January 19, 2025, contractors can immediately expense the full cost of machinery and equipment rather than spreading depreciation across years.
This is a substantial cash-flow advantage. Equipment purchases that previously required multi-year depreciation schedules can now be fully written off in year one, freeing up capital for the next project or reinvestment into workforce and technology.
For construction businesses running tight project margins, this change materially reduces taxable income in the year of purchase. It rewards investment in fleet, tools, and site infrastructure.
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2. Section 179 Expansion: Higher Limits for OBBBA Construction Asset Planning
Section 179 has long been a planning tool for smaller equipment purchases in the construction industry. Under OBBBA construction provisions, the deduction limit rises to $2.5 million, with a phase-out threshold increased to $4 million.
This expansion means more mid-size contractors can take advantage of immediate expensing without hitting the phase-out ceiling. Combined with 100% bonus depreciation, construction businesses now have layered options for accelerating deductions on qualifying equipment and software investments.
Work with your tax advisor to determine which assets are best handled under Section 179 versus bonus depreciation, as each has different eligibility rules and interaction effects with state taxes.
3. Qualified Production Property (QPP): A New OBBBA Construction Opportunity for Industrial Builds
Perhaps the most significant new provision specifically targeting construction activity is the Qualified Production Property (QPP) deduction. Under OBBBA construction rules, a new 100% deduction applies to non-residential real property used in manufacturing or refining.
To qualify, construction must begin between January 20, 2025, and December 31, 2029. This is a compelling incentive for developers building industrial facilities, manufacturing plants, and processing infrastructure during this window. The full cost of the qualifying structure can be immediately deducted rather than depreciated over 39 years.
For contractors and developers in the industrial construction space, QPP represents a rare opportunity to dramatically reduce tax liability on major builds. Project timelines and start dates should be reviewed carefully against this qualifying window.
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4. R&D Expense Deduction: Immediate Relief for OBBBA Construction Innovation Costs
Under OBBBA, domestic research and experimental costs can be immediately deducted in the year incurred, rather than amortized. This provision applies from 2025 through 2029.
For construction businesses investing in prefabrication technology, building systems research, materials testing, or process development, this creates a direct tax benefit for innovation spending. Rather than recovering costs slowly over years, that spend can reduce tax liability now.
5. QBI Deduction Made Permanent: Long-Term Security for OBBBA Construction Pass-Throughs
The 20% Qualified Business Income (QBI) deduction for pass-through entities, including S-corps, partnerships, and sole proprietors, has been made permanent under OBBBA. Construction businesses structured as pass-throughs can now plan with long-term confidence around this deduction rather than waiting for expiration dates to force decisions.
Permanence removes a significant planning uncertainty. Owners can invest, hire, and structure compensation knowing this tax advantage is here to stay. For construction businesses considering ownership transitions or restructuring, this stability matters.
6. Interest Deduction Changes: Improved Calculation for OBBBA Construction Finance
OBBBA construction finance also benefits from changes to interest deduction limitations. The limitation now shifts to a more favorable EBITDA-based calculation, meaning construction businesses can deduct more interest expense compared to the previous EBIT-based formula.
For capital-intensive contractors and developers who carry project financing, equipment debt, or revolving credit facilities, this change can meaningfully increase deductible interest. Review your current financing structures with your CPA to understand the impact.
OBBBA Construction Energy Incentives: What Is Expiring and When
Not every OBBBA construction provision is an expansion. Several energy incentives are being phased out or terminated ahead of schedule. These deadlines are firm and missing them means permanently forfeiting incentives that have been part of project planning for years.
179D Deduction: OBBBA Construction Deadline Is June 30, 2026
Section 179D allows energy-efficient improvements in commercial or large residential buildings to be written off far faster than standard depreciation schedules. Under OBBBA, the deduction has been expanded, but it is scheduled for repeal for projects beginning construction after June 30, 2026.
Projects that qualify and begin before that cutoff can still capture this deduction. Contractors and developers working on commercial builds with energy-efficient systems should confirm start dates against this deadline immediately.
45L Credit: OBBBA Construction Residential Deadline Approaches
The 45L Energy Efficient Residential Credit provides a per-unit federal tax credit for builders and developers of new homes and multifamily units that meet energy-efficiency standards. Under current law, eligible units must be acquired before July 1, 2026.
Homebuilders and multifamily developers should map their current project pipelines against this deadline. Units close to completion may still qualify; projects in early stages likely will not.
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2026 OBBBA Construction Considerations: Estate, Tariffs, and Accounting
Beyond immediate tax incentives, OBBBA construction planning must account for several broader changes taking shape in 2026.
Estate Tax Exemption: Succession Planning for OBBBA Construction Business Owners
The federal estate and gift tax exemption increases to $15 million per individual ($30 million for couples), indexed for inflation and made permanent. For owners of closely held construction businesses, this substantially eases succession planning.
Business transfers that previously triggered significant estate tax exposure can now proceed with greater flexibility. If ownership transitions are on the horizon, this is an important development to discuss with your legal and financial advisors.
Accounting Method Changes: PCM Expansion Under OBBBA for Construction Contracts
The exception for using the percentage-of-completion method (PCM) is broadened to include more residential construction contracts, such as multifamily developments. Additionally, beginning with tax years after July 4, 2025, residential construction contractors can elect to use the completed contract method (CCM) for reporting gross profit.
CCM can simplify reporting and improve cash flow for long-term projects depending on contract structure and timing. Residential and multifamily contractors should evaluate whether switching methods aligns with their project pipelines and accounting systems.
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Tariffs: Material Cost Risk for OBBBA Construction in 2026
Potential universal tariffs of up to 20%, with rates as high as 60% on goods from China, may significantly increase costs for imported construction materials in 2026. Steel, aluminum, mechanical components, and electrical supplies sourced internationally could see substantial price increases.
OBBBA construction planning should account for supply chain shifts. Domestic supplier relationships become more strategically important, and project budgets that rely on imported materials should be stress-tested against tariff scenarios.
Overtime Tax Exemption: New OBBBA Construction Payroll Consideration
A new above-the-line deduction for qualifying overtime pay is available under OBBBA. For construction businesses that rely on overtime to meet project deadlines, this creates a direct tax benefit for that labor cost.
The catch is documentation. This deduction will require new recordkeeping to distinguish qualifying overtime from other compensation. Payroll systems and project cost tracking should be reviewed to ensure compliance and capture this benefit.
How OBBBA Construction Planning Connects to Operational Execution
Tax strategy only delivers results when it connects to real-time project data. Many of the OBBBA construction provisions require precise documentation: start dates for QPP and 179D, per-unit acquisition dates for 45L, equipment placed-in-service records for bonus depreciation, and overtime pay breakdowns for the new payroll deduction.
Construction businesses that manage projects across disparate spreadsheets, disconnected cost systems, and manual reporting will struggle to produce the documentation these provisions require. Unified construction management platforms that connect project timelines, procurement, asset tracking, and payroll create the audit trail needed to support these claims.
Xpedeon is built to give construction businesses the project visibility and financial control needed to execute on plans like these, from tracking asset deployment and construction start dates to managing contract accounting methods across complex project portfolios.
What OBBBA Construction Leaders Should Do Right Now
Time is a factor with several of these provisions. Here are the immediate priorities:
- Map every active and pipeline project against OBBBA construction deadlines. Identify which qualify for 179D, 45L, QPP, and bonus depreciation based on start and acquisition dates.
- Engage your CPA or tax advisor now. Many of these provisions interact with each other and with state tax rules. Early planning gives you options; waiting removes them.
- Audit your recordkeeping systems. Bonus depreciation, QPP, and the overtime deduction all require precise documentation. If your systems cannot produce clean asset-level and payroll data, that is a gap to close.
- Review supply chain exposure. With potential tariffs on imported materials, identify which projects carry the most risk and start building domestic supplier alternatives.
- For business owners considering succession, consult with estate planners about the new $15 million exemption and how it creates planning windows that did not previously exist.
OBBBA Construction: Act on the Opportunities Before the Windows Close
The OBBBA construction provisions represent a genuine reshaping of how the US tax code interacts with building activity. Permanent changes like the QBI deduction and higher Section 179 limits give businesses a stable foundation to plan growth. Time-limited provisions like 179D, 45L, and QPP create windows that reward speed and preparation.
Contractors and developers who understand these changes now will make better bids, better capital allocation decisions, and better project sequencing calls. Those who wait will face a narrower set of options and may miss qualifying deadlines entirely.
Ready to align your project planning with the latest OBBBA construction changes?
Book a Discovery Call with Xpedeon and see how smarter project controls protect your margins.