The One Big Beautiful Bill Act (OBBBA) just delivered something builders don’t often get: multi-year certainty.
For the first time in years, key tax rules that affect equipment purchases, project timing, and income recognition are stable and permanent. That means builders can make smarter year-end decisions that strengthen cash flow heading into 2026.
The biggest win?
Permanent 100% bonus depreciation.
Builders can immediately write off trucks, tools, equipment, tech, and software placed in service after Jan. 19, 2025. No waiting years to depreciate assets. This is a direct cash-flow injection for any builder planning upgrades.
The act also makes the 20% QBI deduction permanent—a significant tax reduction for most builders operating as LLCs or S corporations. And the restored 30% EBITDA interest deduction increases the amount of interest that can be written off on project financing, equipment loans, or working capital lines.
Another builder-specific benefit:
Starting in 2026, many residential projects will qualify for completed-contract accounting, allowing builders to defer taxable income until the project is finished—a powerful way to smooth income and avoid tax spikes.
Some incentives, like energy-efficiency credits (45L and 179D), expire mid-2026, so acting early matters.
For builders looking to optimize cash flow, upgrade equipment, or plan 2026 projects, these changes offer a rare opportunity: stability, predictability, and real tax savings.
Read the full OBBBA tax breakdown at Construction Dive.
