
Chris Coleman is partner-in-charge of accountancy RubinBrown’s Building Companies Group. Opinions are the writer’s personal.
For years, contractors have needed to make long-term choices underneath short-term tax guidelines that would change with the following price range deal. Whereas a future Congress might make adjustments, the One Huge Lovely Invoice Act, or OBBBA, is a big price range and tax invoice that ends that uncertainty for the foreseeable future.

Chris Coleman
Courtesy of RubinBrown
The regulation makes everlasting a number of tax insurance policies that building corporations have come to depend on, despite the fact that they have been beforehand momentary in nature. Now, contractors know what guidelines they’ll be working underneath for the following a number of years. For an trade constructed on lengthy undertaking timelines and skinny margins, stability is price as a lot as any new incentive.
This new-found certainty is especially related within the remaining months of 2025. Now, choices made earlier than year-end can have long-term results on money circulate, undertaking pricing and capital budgets — probably giving sensible operators a leg up. In different phrases, in the course of the steadiness of the fourth quarter, building corporations can use the OBBBA’s adjustments to their benefit to lock in lasting cash-flow good points for 2025 and past.
Listed below are 4 ways in which building corporations ought to be benefiting from the brand new tax invoice forward of 2026.
Leverage the new-found permanence
OBBBA now permits building corporations to restructure their buying plans to enhance money circulate. For instance, OBBBA locks in 100% bonus depreciation for qualifying property positioned in service after Jan. 19, 2025. By restoring the rapid write-off that had been phasing out since 2023, building corporations have extra time to buy tools, automobiles and software program, understanding that in future years deductions will proceed to spice up money circulate by lowering taxable revenue.
The act additionally makes the 20% Certified Enterprise Earnings deduction everlasting for pass-through entities, conserving tax charges for a lot of building firms aggressive with firms. And by restoring the enterprise curiosity limitation to 30% of adjusted taxable revenue calculated on an EBITDA foundation, the regulation eases stress on leveraged corporations dealing with larger borrowing prices.
Taken collectively, building corporations have extra flexibility to reexamine their long-term funding methods to optimize money circulate and reassess their capital investments. As an alternative of holding off on asset purchases or tools upgrades, corporations can assume long-term, understanding the deduction guidelines aren’t set to vary midstream within the near-term.
Lock in wins earlier than Dec. 31
Different OBBBA provisions supply alternatives for building and actual property companies to probably scale back fourth quarter estimated tax funds:
- Certified Manufacturing Property bills. Taxpayers constructing certified manufacturing or processing amenities can deduct 100% of costs if building begins between Jan. 20, 2025 and Jan. 1, 2029, and the construction is positioned in service earlier than 2031. As an added potential bonus for contractors, this accelerated depreciation on in any other case long-lived property might spur building in these industries.
- R&D bills. Design and engineering corporations can once more totally deduct home analysis prices within the 12 months incurred. Those that capitalized bills for 2022 by way of 2024 can write off remaining balances now.
- QBI deduction. The 20% pass-through deduction is everlasting, giving contractors long-term price certainty.
- Curiosity deduction. The 30% EBITDA restrict expands the quantity of curiosity that may be deducted, bettering flexibility for debt-financed tools or property.
- Accomplished-contract accounting. Beginning in 2026, most multi-unit residential initiatives can defer taxable revenue till completion slightly than reporting it as work progresses.
Every profit is determined by timing and documentation. Contractors ought to seek the advice of with their tax advisors for benefits particular to their very own circumstances.
Seize maintain of disappearing incentives
Whereas OBBBA creates long-term stability, it additionally accelerates the top of some fashionable credit and deductions — together with a number of that building corporations within the green-energy trade ought to concentrate on.
The energy-efficiency incentives underneath Sections 45L and 179D now have a June 30, 2026 cutoff. Contractors working in residential or industrial vitality upgrades ought to plan to start out qualifying initiatives as quickly as potential to protect eligibility.
The act additionally introduces new rules around qualifying employee overtime pay from 2025 by way of 2028. It’s modest in scope and designed to learn staff immediately however provides new W-2 reporting necessities that employers should put together for.
Evaluate contracts and property now
Yr-end is the time to show coverage into planning. One of the best alternatives underneath OBBBA require lively evaluate of contracts, property and undertaking timing — not simply consciousness.
Contractors ought to begin by reviewing their tools lists and breaking down undertaking prices to make sure they’re claiming each greenback of obtainable bonus depreciation. R&D-heavy corporations ought to look again to 2022 to 2024 filings and determine any bills that may be taken as rapid deductions.
Builders taking up residential initiatives in 2026 ought to consider which contracts qualify for completed-contract accounting and mannequin the impact on money circulate.
And for everybody, it’s time to examine payroll and reporting techniques in opposition to the brand new time beyond regulation pay reporting guidelines.
Ignoring these adjustments till tax season might create surprising trouble or pricey corrections later.
A brief window, lengthy penalties
On the macro degree, OBBBA is anticipated to expand business investment in 2026 and 2027. The Congressional Price range Workplace initiatives a $4.1 trillion increase in federal deficits over the following decade because of the invoice, with a lot of the stimulus hitting inside the subsequent three years. Which will help upcoming building development, nevertheless it additionally alerts tighter fiscal situations later — one more reason to financial institution cash-flow benefits now whereas charges stay favorable.
The One Huge Lovely Invoice Act is, in some ways, a return to normalcy for an trade that’s spent a decade planning round uncertainty. The principles are clear and incentives are in place. What issues now’s execution earlier than the top of the 12 months
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