Quick Answer
The One Big Beautiful Bill expands Section 199A pass-through deductions from 20% to 25% for eligible businesses under $500,000 income, increases equipment expensing limits to $1.5 million, and creates new R&D credit alternatives. These changes could save qualifying small businesses $2,000-$15,000 annually depending on structure and income.
Best Answer
Michelle Woodard, Tax Policy Analyst
Pass-through entities (S-corps, partnerships, sole proprietorships) with under $500,000 taxable income
How the enhanced Section 199A deduction works for small businesses
The One Big Beautiful Bill's most significant change for small businesses is the expansion of the Section 199A qualified business income (QBI) deduction from 20% to 25% for pass-through entities with taxable income under $500,000 ($1 million for married filing jointly). This means eligible small business owners can now deduct 25% of their qualified business income directly from their taxable income.
Example calculation: If your S-corporation passes through $200,000 in qualified business income to you in 2026, your Section 199A deduction increases from $40,000 (20%) to $50,000 (25%) — saving you approximately $2,200-$4,400 in federal taxes depending on your marginal tax bracket.
Expanded equipment expensing under Section 179
The Act increases Section 179 equipment expensing limits from $1.16 million to $1.5 million for 2026, with the phase-out threshold rising from $2.89 million to $3.5 million in total equipment purchases. This allows small businesses to immediately deduct larger equipment purchases rather than depreciating them over several years.
Real-world impact: A construction company buying $1.3 million in equipment can now deduct the full amount in 2026 (up from $1.16 million), potentially saving $33,600 in taxes at the 24% bracket on the additional $140,000 deduction.
New research and development alternatives
Starting in 2026, businesses can elect an alternative R&D credit structure that allows immediate deduction of up to $250,000 in qualified research expenses annually (previously all R&D had to be amortized over 5 years). This particularly benefits tech startups and innovative small businesses.
Key qualifying requirements and limitations
Comparison of 2025 vs. 2026 benefits
What small businesses should do now
1. Review your business structure: Consider converting to an S-corporation if you're currently a sole proprietorship to maximize Section 199A benefits
2. Plan equipment purchases: Accelerate major equipment purchases into 2026 to take advantage of higher Section 179 limits
3. Document R&D activities: Start tracking research and development expenses that could qualify for immediate deduction
4. Consult your tax professional: The interaction between these new rules and existing limitations is complex
[Use our return scanner tool to identify which 2026 changes might benefit your specific business situation.](#)
Key takeaway: Small businesses under $500,000 income can save $2,000-$15,000 annually through enhanced Section 199A deductions, higher equipment expensing limits, and new R&D alternatives — but proper planning and structure optimization is essential.
Key Takeaway: Enhanced Section 199A deductions (20% to 25%), higher Section 179 limits ($1.5M), and new R&D alternatives can save qualifying small businesses $2,000-$15,000 annually.
Impact of One Big Beautiful Bill changes by business income level
| Business Income Level | Section 199A Rate | Max Section 179 | Potential Annual Savings |
|---|---|---|---|
| Under $230K (single) | 25% | $1.5M | $2,000 - $8,000 |
| $230K - $500K (single) | 25% (phased) | $1.5M | $5,000 - $15,000 |
| Over $500K (single) | 20% | $1.5M | $3,000 - $12,000 |
More Perspectives
Robert Kim, Tax Return Analyst
Business owners with income above $500,000 who face additional restrictions and phase-outs
Limited benefits for high-income business owners
If your business generates over $500,000 in taxable income ($1 million MFJ), you won't qualify for the enhanced 25% Section 199A deduction — you're still limited to the original 20% rate. However, you can still benefit from other provisions in the One Big Beautiful Bill.
Section 179 expensing remains valuable: The increased $1.5 million Section 179 limit applies regardless of income level, as long as your total equipment purchases don't exceed $3.5 million. For a high-earning business buying $1.4 million in equipment, this could save $57,600 in taxes at the 32% bracket.
Specified Service Business (SSB) considerations
If you're in a professional service business (law, accounting, consulting, financial services), the restrictions are even tighter. Above $230,000 taxable income ($460,000 MFJ), your Section 199A deduction phases out completely by $330,000 ($560,000 MFJ). The One Big Beautiful Bill doesn't change these thresholds.
Strategic planning opportunity: Consider income smoothing strategies to stay below phase-out thresholds in alternating years, or restructure professional practices to separate service income from business income where legally permissible.
Key takeaway: High earners miss out on enhanced Section 199A benefits but can still leverage increased Section 179 limits and new R&D provisions for substantial tax savings.
Key Takeaway: High earners above $500,000 don't get enhanced Section 199A benefits but can still save significantly through higher Section 179 limits and R&D alternatives.
Michelle Woodard, Tax Policy Analyst
Family-owned businesses considering succession planning and multiple owner structures
Family business succession opportunities
The One Big Beautiful Bill creates new opportunities for family businesses to optimize ownership structures across generations. The enhanced Section 199A deduction applies per taxpayer, not per business entity, creating planning opportunities for families.
Multi-generational planning: A family business generating $800,000 in qualified business income could potentially be restructured so that each spouse and adult children receive portions of the income below the $500,000 threshold, allowing multiple family members to claim the enhanced 25% deduction.
Example structure: Parents own 60% ($480,000 QBI) and adult children own 40% ($320,000 QBI). Both generations qualify for the 25% deduction, creating total family tax savings of approximately $20,000 annually compared to one owner above the threshold.
Estate planning integration
The enhanced deduction makes business interests more valuable to retain within families. Consider gifting business interests to adult children before the business grows beyond the income thresholds, allowing future appreciation to benefit from enhanced deductions in their hands.
Important compliance note: Any restructuring must have legitimate business purposes beyond tax savings and should be implemented with proper legal documentation and valuation support.
Key takeaway: Family businesses can multiply Section 199A benefits across generations through strategic ownership restructuring, potentially saving $15,000-$30,000 annually for larger family enterprises.
Key Takeaway: Family businesses can multiply enhanced Section 199A benefits across generations through strategic ownership planning, potentially doubling or tripling total family tax savings.
Sources
- One Big Beautiful Bill Act of 2025 — Full text of the tax reform legislation
- IRS Publication 535 — Business Expenses
- IRS Section 199A Proposed Regulations — Updated guidance for enhanced QBI deduction
Reviewed by Michelle Woodard, Tax Policy Analyst on February 28, 2026
This content is for educational purposes only and is not a substitute for professional tax advice. Consult a qualified tax professional for advice specific to your situation.