As the 2026 filing season approaches, construction companies nationwide face a tax landscape that is both generous in deductions and more complex. Expanded depreciation rules, new accounting flexibility and long-term certainty for pass-through incentives mean smart planning now can improve cash flow and significantly reduce taxable income.
Here are the top three tax strategies construction business owners should prioritize this filing season.
1. Maximize Depreciation and Equipment Expensing
Construction is a capital-intensive business, and the federal tax code increasingly reflects that reality.
Why It Matters
The One Big Beautiful Bill Act (OBBBA) permanently reinstated 100% bonus depreciation for qualifying assets placed in service after January 19, 2025. This allows companies to fully expense heavy equipment, vehicles, tools, and more in the year they’re put into use — instead of over many years.
At the same time, the Section 179 deduction cap has been increased (e.g., up to $2.5 million, with thresholds beginning to phase out at $4 million in 2025 and indexed for inflation in 2026). This expanded threshold gives many construction firms greater flexibility to expense qualifying purchases immediately.
Practical Tips
- Time purchases carefully: Only assets placed in service by year-end qualify for immediate expensing. Plan deliveries, install schedules, and ready-for-use timing accordingly.
- Layer Section 179 and bonus depreciation: Use Section 179 to target specific high-priority assets, then apply bonus depreciation to remaining purchases. This approach is especially effective for large trucks, cranes and heavy machinery.
- Don’t overlook technology: Certain software, project management tools and digital platforms may qualify for expensing when properly classified. These deductions not only cut your taxable income but also improve cash flow — money you can reinvest into wages, materials, or expansion.
2. Leverage Specialized Credits and Accounting Flexibility
Beyond basic depreciation, construction companies can tap into several targeted tax incentives and accounting elections that reduce liability.
Key Opportunities
- Qualified Business Income (QBI) Deduction: Pass-through companies (LLCs, S corps, partnerships) can deduct up to 20% of qualified business income — and this deduction is now made permanent.
- Research & Development Credits: Yes, even construction firms can qualify if they innovate — for example, by developing more efficient building processes, materials, or safety systems. These credits directly reduce tax liability dollar-for-dollar.
- Energy-Efficient Building Incentives: Deductions like IRC §179D reward energy-efficient design and sustainable upgrades — but many of these incentives are tightening or set to sunset mid-2026, so acting now is crucial.
- Revenue Recognition Choices: Construction accounting methods — such as the completed-contract method versus the percentage-of-completion method — can materially affect when income is recognized and taxes owed. Recent law changes give broader flexibility, especially for residential and multi-unit projects.
Actionable Steps
- Work with a CPA who understands construction: Many tax credits and methods require specific documentation and elections. A specialist helps ensure you capture all eligible benefits.
- Evaluate contracts annually: Large projects spanning multiple years can benefit from strategic method elections that defer income or accelerate deductions.
- Year-Round Planning: Estimated Taxes and Timing of Income
3. Being proactive about taxes throughout the year — not just at filing time — can yield major advantages.
Why It’s Critical
Construction revenue and expenses often don’t align neatly with calendar years. Seasonal revenues, retainage, project delays, and subcontractor timing can create peaks and valleys that complicate quarterly estimations. Improving how and when you recognize income or deductions can significantly reduce year-end surprises and penalties.
Strategies That Work
- Optimize Estimated Tax Payments: Avoid underpayment penalties and preserve cash flow by forecasting profits mid-year and aligning estimated payments with expected liabilities.
- Accelerate or Defer Income/Expenses: If you use cash accounting, deferring invoices until January can delay tax liability, while accelerating deductible expenses into the current year can increase deductions. Always balance with cash flow needs.
- Maintain pristine documentation: Timely and detailed bookkeeping — especially job cost tracking — not only simplifies tax preparation but supports every deduction and credit you claim.
Final Thoughts
The 2026 filing season isn’t just a deadline — it’s an opportunity. With permanent enhancements to depreciation, expanded deduction thresholds, and renewed incentives like the QBI deduction, construction companies have unprecedented tools to shape their tax outcomes. But these opportunities work best when paired with planning, expert advice and rigorous documentation.
Start conversations with your tax advisor now — not in March — so your 2025 books are positioned to deliver the best possible results when you file in 2026.
Contact your Dean Dorton advisor to discuss how these strategies may apply to your construction business and to begin proactive tax planning for the 2026 filing season.