The One Big Beautiful Bill Act: What Changed & Why It Matters Now
The One Big Beautiful Bill Act (OBBBA), enacted in July 2025, rewires several core business tax rules: immediate expensing is back for domestic §174 R&D; §163(j) returns to an EBITDA basis; 100% bonus depreciation is restored; clean‑energy credit timelines are accelerated; and international regimes are retuned (FDII → FDDEI; GILTI → NCTI). Keep reading to learn what these updates mean for your bottom line.
Watch The On-Demand Recording: 2025 Year End Business Tax Update
Immediate Expensing Returns For Domestic §174 Research & Development
OBBBA restores immediate deductions for domestic §174 costs (credits remain available), while foreign Research & Development (R&D) must still be amortized over 15 years, making location strategy central again.
Four Ways To Treat 2022–24 Domestic §174 Balances
- Deduct everything in 2025 for maximum current‑year relief, ideal if you have sufficient taxable income to absorb the deduction.
- Split evenly across 2025–2026 to smooth ETR and avoid unwanted NOL formation.
- Continue 5‑year amortization, useful for pre‑revenue or low‑income years.
- Qualified small business option: if average receipts ≤ ~$31M and not a tax shelter, consider amending 2022–24 (all three years) to claim deductions annually; model interactions carefully.
Planning Implications
- Tax capacity first: If 2025 taxable income is robust, a one‑time §174 flush can drive a large cash benefit; if income is thin, spreading may produce better multi‑year efficiency.
- Keep doing the credit study: Even with $0 tax in 2025, §41 credits can carry back one year for cash refunds. Coordinate timing with quick‑refund forms below.
Watch The On-Demand Recording: 2025 Year End Business Tax Update
Debt, Depreciation, & §163(j) (EBITDA Is Back)
From 2022–24, §163(j) capped interest using Earnings Before Interest and Taxes (EBIT); OBBBA reverts to Earnings Before Interest, Taxes, and Amortization (EBITDA), increasing allowable interest deductions, especially when paired with 100% bonus depreciation. In the webinar’s example, the post‑OBBBA mechanics flipped taxable income toward break‑even/loss, eliminating current‑year tax.
Read Also: Understanding The 163(j) Limitation In the Context Of The One Big Beautiful Bill Act
Planning Implications
- Re‑run debt capacity: With EBITDA add‑backs, strategic leverage may be more deductible; rebalance capital structure accordingly.
- Time in‑service dates: Maximize bonus depreciation to lower taxable income and raise §163(j) Adjusted Taxable Income (ATI).
100% Bonus Depreciation & The New QPP Opportunity
OBBBA restores 100% bonus depreciation for qualified property placed in service after Jan. 19, 2025. It also creates Qualified Production Property (QPP)—a category of production‑integral, non‑residential property eligible for immediate expensing, with exclusions for office/administrative areas and a need for forthcoming IRS guidance.
Planning Implications
- Do cost segregation: Separate QPP from non‑qualifying space. A robust study strengthens your position if challenged.
- Sequence projects: Front‑load qualifying build‑outs to capture immediate expensing. Model partial qualifications (a few projects are 100% QPP).
- Expect guidance lag: The IRS has yet to define QPP in detail. Document assumptions and be prepared to adjust.
Clean‑Energy Credits: Deadlines Tightened
OBBBA accelerates or curtails multiple incentives, making calendar control essential:
- Commercial clean vehicle credit expired Sept. 30, 2025.
- §179D: construction must begin by June 30, 2026.
- Clean hydrogen: commence before Dec. 31, 2027.
- Solar/wind: start by July 4, 2026; in service by Dec. 31, 2027.
Read Also: Clean Energy Credits: Racing The Clock Under The OBBBA
Planning Implications
- Lock schedules now: Align permits, contracts, and procurement to meet start/in‑service dates; missing by weeks can forfeit credits.
- Stack with bonus/QPP: Where feasible, combine energy credits with immediate expensing—model sequencing to maximize net present value.
Charitable Contributions: Less Favorable Rules Begin In 2026
Beginning in 2026, itemized charitable deductions face a 0.5% AGI floor, high‑income marginal benefit caps at 35%, and corporate deductions adopt a 1% floor/10% ceiling carryforward regime. If you have charitable intent, 2025 is likely the most efficient window.
Planning Implications (2025)
- Corporations: expect to deduct less than contributed over two years (e.g., $110K contribution → $100K deduction under new floors/ceilings).
Cross‑Border Changes: FDDEI & NCTI (Effective For Years Beginning After 12/31/2025)
OBBBA renames and reshapes key regimes: Foreign-Derived Intangible Income (FDII) is now Foreign-Derived Deduction Eligible Income (FDDEI) (deduction 33.34%, simplified, broader eligibility), and Global Intangible Low-Taxed Income (GILTI) is now Net CFC Tested Income (NCTI) (deduction 40%, removes QBAI, improves FTC haircut to 90%). Consequence: some exporters gain more consistent §250 benefits; many multinationals with overseas PP\&E may face higher U.S. residual tax.
Read Also: Major International Tax Changes Ahead: What U.S. Exporters & Multinationals Need To Know
Planning Implications
- Re‑allocate expenses prudently: FDDEI’s simplified allocation can increase the §250 deduction (webinar example showed a ~7% rate benefit).
- Rethink asset footprints: With QBAI gone under NCTI, foreign PP\&E no longer shields tested income; revisit siting, capitalization, and FTC capacity.
Monetizing Benefits & Managing Cash
OBBBA landed mid‑year; many taxpayers prepaid 2025 estimates under old assumptions. Re‑calibrate immediately and use quick‑refund routes where eligible.
Watch The On-Demand Recording: 2025 Year End Business Tax Update
Fast Paths To Cash
- Form 1045 (individuals) / Form 1139 (C‑corps): Tentative refunds for credit carrybacks—often processed faster than full amendments if filed within required windows.
- Form 4466 (C‑corps): Claim an excess estimated tax after year‑end and before the original due date to accelerate recovery by months.
Pair With R&D Credits
- If 2025 tax drops to $0, complete your §41 study and use the one‑year carryback to monetize via 1045/1139.
Expect Guidance & Processing Delays, Prepare Accordingly
Staffing disruptions and acting/vacant roles within the IRS mean guidance and case processing can take longer. Document positions thoroughly, build strong files (e.g., cost segregation for QPP), and anticipate extended timelines for exams and notices.
Watch The On‑Demand Webinar & Talk To Your Advisor
For deeper numerical walk‑throughs and examples, watch the on‑demand GBQuarterly session, “Year‑End Business Tax Update,” and share it with your leadership and finance teams. Then reach out to your business tax advisor to model §174 choices, §163(j) capacity, bonus/QPP timing, energy project schedules, charitable timing, and FDDEI/NCTI impacts tailored to your facts.
By Jeff Waldeck, CPA, Tax & Advisory; Chris Dean, CPA, Tax & Advisory; and Mark Silvaggio, JD, CPA, Tax & Advisory
Looking for additional OBBBA Insight? Check out these resources:
New OBBBA Provisions Set To Reshape Payroll Tax Reporting
Opportunity Zones Evolve: Comparing TCJA & OBBBA Legislation For Investors & Communities
