For owners of pass-through businesses, the Qualified Business Income (QBI) deduction represents a game-changer. Established by the Tax Cuts and Jobs Act of 2017, this deduction rewards eligible taxpayers with up to 20% of their QBI, offering significant tax savings.

As we move into 2026 under the One Big Beautiful Bill Act (OBBBA), the QBI deduction is now permanent, with expanded limits and new rules. In this article, we’ll explore eligibility, mechanics, recent law changes, and practical planning strategies to help you make the most of this powerful provision.

What Is the QBI Deduction and Why It Matters

The QBI deduction, also known as the Section 199A pass-through deduction, allows eligible taxpayers to deduct a portion of qualified income from a domestic trade or business, plus certain REIT dividends and PTP income. It was designed to level the playing field, since pass-through entities do not pay federal corporate tax.

By reducing taxable income by 20% of QBI from a domestic qualified trade or business, many small business owners can lower their effective tax rate substantially. This can free up capital for expansion, retirement planning, or reinvestment in the business.

Who Qualifies for the Deduction

Not every business owner is eligible. Generally, taxpayers who operate through pass-through entities may claim the deduction. C corporations are excluded.

• Eligible: Sole proprietors, partnerships, S corporations, LLCs taxed as pass-throughs, certain trusts and estates
• Not eligible: C corporations
• Also includes: Qualified REIT dividends and publicly traded partnership income

Determining eligibility can be straightforward for basic sole proprietorships, but more complex for high-income taxpayers or those in specified service trades or businesses (SSTBs). Below certain income thresholds, most owners can take the full deduction without further limits.

How the 20% Deduction Works

The deduction has two main components:

• QBI component: 20% of net qualified business income.
• REIT/PTP component: 20% of qualified REIT dividends plus 20% of qualified PTP income.

Your total deduction is the lesser of your combined QBI and REIT/PTP components or 20% of taxable income minus net capital gain. This overall limitation ensures deductions cannot exceed a taxpayer’s taxable income cap.

Understanding Thresholds and Limitations

Income thresholds are critical. For 2025, single filers with taxable income below $197,300 (or $394,600 MFJ) face no wage or property limits and can claim the full 20% deduction.

Above these thresholds, two additional tests may apply:

• 50% of W-2 wages paid by the business, or
• 25% of W-2 wages plus 2.5% of the unadjusted basis of qualified property.

Specified service trades or businesses (SSTBs), such as professional service firms, face phased deductions and potential eliminations once income surpasses the range’s high end.

The 2026 Law Changes Under OBBBA

Starting in 2026, the OBBBA made the QBI deduction permanent and introduced key updates to the rules that affect high-income taxpayers.

Major changes include expanded phase-in ranges and a minimum deduction rule:

Compared to prior ranges, these figures reflect a 50% expansion of phase-in thresholds, easing limitations for more taxpayers. Additionally, taxpayers who materially participate and report at least $1,000 of QBI can claim a minimum QBI deduction of $400, even if standard calculations would be lower.

Practical Planning Opportunities

Strategic planning can maximize your deduction and reduce your taxable income:

• Manage taxable income timing through year-end strategies
• Monitor and adjust W-2 wage payments where applicable
• Invest in qualified property to increase the property-based limit
• Review entity structure—S corporation vs. LLC—for optimal tax outcomes
• Contribute to retirement plans and account for self-employed health insurance deductions

Conclusion

The QBI deduction offers a remarkable opportunity for pass-through business owners to reduce their federal tax burden. With permanent rules and expanded phase-in ranges now in effect, more taxpayers can take advantage of this benefit.

By understanding eligibility, threshold mechanics, and recent law changes, you can implement effective tax strategies that boost your bottom line and support long-term growth. Always consult your tax advisor to tailor a plan that aligns with your unique business and financial goals.