The One Big Beautiful Bill Act Is a Growth Window for Business Owners. Here’s How to Use It.

If you run a business doing between $1.5 million and $50 million a year, the tax law signed on July 4, 2025 changed your math. The One Big Beautiful Bill Act (OBBBA) made several of the biggest business tax breaks permanent and brought back others that had been shrinking. The owners who benefit most are not the ones who read the headlines. They are the ones who see their numbers every month and plan before year-end.

This is a plain-English tour of the OBBBA tax changes for business owners: what changed, who it helps, and why this is a good moment to put an experienced CPA and virtual CFO on your side.

What the One Big Beautiful Bill changed for business owners

100% bonus depreciation is permanent. Qualifying equipment, vehicles and machinery you acquire after January 19, 2025 can be deducted in full in the first year. Before the law, this deduction was stepping down each year. (IRS)

Section 179 expensing is bigger. For 2026 the limit is $2,560,000, and it starts phasing out once you place more than $4,090,000 of property in service in a year. Both figures now rise with inflation. (IRS Rev. Proc. 2025-32)

A new deduction for factories and production buildings. Qualified production property can be deducted 100% in year one if construction begins after January 19, 2025 and before 2029, and the building is placed in service before 2031. (IRS Notice 2026-16)

U.S. research costs can be deducted again. New Section 174A lets you expense domestic research and experimental costs immediately, instead of spreading them over five years. This reaches well beyond labs. Engineering, product development and process improvement can all qualify. (CohnReznick)

Smaller businesses, generally those with average annual gross receipts of $31 million or less, could apply this retroactively to 2022–2024, but that election generally had to be made by July 6, 2026. Any business may still be able to deduct its remaining unamortized 2022–2024 domestic research costs over one or two years, so ask your CPA. (Taxpayer Advocate Service)

The 20% pass-through deduction is permanent. The qualified business income (QBI) deduction under Section 199A no longer expires, and the phase-in range for the income limits was widened. (RSM)

The SALT cap is $40,400 for 2026. It rose to $40,000 for 2025 and climbs 1% a year through 2029. For 2026 it phases down for incomes above $505,000, though never below $10,000, and it returns to $10,000 in 2030. State pass-through entity tax (PTET) elections remain a planning tool for owners in high-tax states like New York. (Kiplinger, Mintz)

More interest is deductible. Section 163(j) goes back to an EBITDA-based limit, which generally lets companies with heavy depreciation deduct more of their loan interest. (Grant Thornton)

The estate and gift exemption is $15 million per person from 2026. It is indexed for inflation and no longer scheduled to drop. (Mintz)

Qualified small business stock (QSBS) got friendlier. For C-corporation stock issued after July 4, 2025, the exclusion is 50% after three years, 75% after four and 100% after five. The per-issuer cap rises to $15 million and the gross-assets limit to $75 million. (Baker Tilly)

Smaller items add up. The 1099-NEC and 1099-MISC reporting threshold rises from $600 to $2,000 for payments made in 2026. (USDA summary) Employees may also deduct qualified tips and overtime through 2028, and employers have new reporting duties. (IRS)

Which industries benefit most from the new tax law

Not every industry gets the same lift. Based on the Bureau of Labor Statistics’ 2025–2035 employment projections and recent deal data, these stand out:

• Construction and general contractors. Equipment-heavy and project-based, so bonus depreciation and Section 179 timing matter. The Bureau of Labor Statistics projects construction employment up 5.0% from 2025 to 2035. (BLS)
• Home services trades. HVAC and plumbing are projected to grow 7.7%, and electrical 8.0% (BLS). Fleets and tools qualify for expensing, and private-equity buyers are active: they accounted for 60.5% of residential-services M&A in 2026 to date. (Capstone Partners)
• Light manufacturing. The most levers in one place: bonus depreciation, the production-property deduction and restored R&E expensing.
• Professional services and healthcare practices. High-income owners, where QBI limits, SALT and PTET choices drive real dollars. BLS projects consulting up 15.1% and offices of physicians up 7.1% over the decade. (BLS)

Why a once-a-year tax return won’t capture it

Every one of these breaks has a catch. Bonus depreciation only helps if the equipment is placed in service by December 31. Production-property rules depend on when construction began. QBI depends on how your owner pay and entity are structured. R&E expensing depends on documentation. PTET depends on your state and your timing.

A once-a-year tax filing finds these in April, when it is too late to act. A CFO who sees your numbers monthly can plan the equipment purchase, model the cash, and decide the entity question before the year closes.

That’s the difference between a CPA who looks backward and a CPA and CFO who work forward with you.

Year-end tax planning checklist: 5 questions before December 31

Use this as a quick checklist with your own CPA, or bring it to a free consultation with us:

1. Are you planning to buy equipment, vehicles or machinery? If so, what is the cash plan, and will the asset be in service by year-end?
2. Are you building or expanding a production facility? Construction timing may decide whether the new 100% deduction applies.
3. Do you spend money on engineering, product development or process improvement? If so, is it documented well enough to support R&E expensing?
4. Are your entity and owner pay set up to make the most of QBI and your state’s PTET option?
5. Do you have a 12-month forecast that tells you whether you can afford any of the above?

If you answered “I’m not sure” to more than one, that is a sign your finance function has not kept pace with your growth.

What a virtual (fractional) CFO does for a $1.5M–$50M business

At Aversano Virtual CFO, one team handles both sides:

• Tax filings and planning. Business and personal returns, coordinated, with a year-round tax plan.
• Monthly financials you can trust. Clean books, a real close, and reports you can show a lender.
• Forecasting and cash flow. A rolling forecast and a 13-week cash view, so a big purchase doesn’t become a cash crunch.
• Growth decisions. Hiring, pricing, new locations, equipment, and whether to buy, build or lease.

Our lead, Mike Aversano, CPA, spent more than ten years at Deloitte & Touche, rising to audit Senior Manager, and has run his own practice since 2002. That experience, plus a family firm that’s easy to reach, is what we bring to owners who have outgrown a bookkeeper and an annual tax appointment. See our CFO packages.

Why now

Three things line up this year.

1. The rules are settled. Many of these provisions are permanent, so you can plan multi-year investments with confidence.
2. The calendar is tight. As of late October 2026, equipment must be in service by December 31 to count for 2026, and year-end planning works best when it starts well before the last week of December.
3. Capital is moving. Lenders, buyers and private-equity groups generally favor businesses with clean, forward-looking numbers.

An experienced CPA and CFO can help you turn these changes into a plan for growth. We built our service to help business owners pursue 2 to 3 times revenue growth: not as a promise, because no one can guarantee a result, but as the goal we plan toward with you, using the tax law, your numbers and your ambitions. Owners who start now go into 2027 with a forecast, a tax plan and a partner who knows the business.

This article is general information, not tax, legal or accounting advice, and it does not guarantee any result. Tax law changes and each business’s facts differ, so talk with a qualified professional before acting. Figures and provisions were checked against the sources linked above as of October 2026.