What Business Does Not Qualify for QBI Deduction?

‍C corporations, W-2 employees, businesses conducted entirely outside the United States, and specified service trades or businesses (SSTBs) above certain income thresholds do not qualify for the qualified business income (QBI) deduction under Section 199A of the Internal Revenue Code. The QBI deduction allows eligible pass-through business owners to deduct up to 20% of their qualified business income, but the exclusions are specific and each one operates through a different mechanism. A C corporation is excluded because it pays tax at the entity level. An employee is excluded because wage income is not business income. A foreign operation is excluded because the income is not effectively connected with U.S. business activity. An SSTB owner is excluded above the income threshold because Congress carved out professions where the principal asset is the reputation or skill of the owner.

The sections below cover what the QBI deduction is, why each of these four categories is excluded, what qualifies as a specified service trade or business, where the 2026 income thresholds sit after the One Big Beautiful Bill Act (OBBBA) made the deduction permanent, what limitations apply even to qualifying businesses, which types of income are carved out of QBI, how LLCs and S corporations fit into the picture, whether rental income qualifies, how to plan around the exclusions, and what the OBBBA changed for 2026 and beyond.

Key Takeaways

• C corporations do not qualify for the QBI deduction. The deduction applies only to pass-through entities: sole proprietorships, partnerships, S corporations, and certain trusts and estates.
• W-2 wage income is excluded from QBI regardless of the type of work performed. A person doing identical work as an employee and as a sole proprietor gets two different tax results.
• Specified service trades or businesses (SSTBs), including health, law, accounting, consulting, financial services, and athletics, lose the QBI deduction entirely once taxable income exceeds $276,750 for single filers or $553,500 for joint filers in 2026.
• According to IRS data reported by the Congressional Research Service, 25.7 million taxpayers claimed the Section 199A deduction in 2022, up from 18.7 million when the deduction first became available in 2018.
• The OBBBA, signed July 4, 2025, made the QBI deduction permanent, expanded the phase-in ranges, and introduced a $400 minimum deduction for taxpayers with at least $1,000 of QBI and material participation.
• For 2026, the full QBI deduction is available below $201,750 in taxable income for single filers and $403,500 for married couples filing jointly, per Rev. Proc. 2025-32.
• Even qualifying businesses face limitations based on W-2 wages paid, the unadjusted basis of qualified property, and overall taxable income. The deduction cannot exceed 20% of taxable income minus net capital gains.
• Rental income qualifies for QBI only when the rental activity rises to the level of a Section 162 trade or business or meets the IRS safe harbor requiring at least 250 hours of rental services per year.

What Is the QBI Deduction and Why Does It Matter?

The QBI deduction is a federal tax provision under IRC Section 199A that allows eligible pass-through business owners to deduct up to 20% of their qualified business income from their taxable income. Congress created the deduction through the Tax Cuts and Jobs Act (TCJA) of 2017 to narrow the gap between pass-through businesses, whose income is taxed at individual rates ranging from 10% to 37%, and C corporations, which pay a flat 21% federal rate. For a business owner in the 37% bracket, the QBI deduction effectively reduces the top rate on qualifying income to 29.6%, according to tax analysis published by Taxstra.

The deduction applies to income from sole proprietorships, partnerships, S corporations, and certain trusts and estates. It also covers 20% of qualified real estate investment trust (REIT) dividends and qualified publicly traded partnership (PTP) income under a separate component with different rules. The QBI deduction is claimed on the owner's individual tax return, Form 1040, using Form 8995 for straightforward situations or Form 8995-A when income exceeds the threshold and additional calculations are required.

According to IRS data reported by the Congressional Research Service, the number of Section 199A deduction claims rose from 18.7 million in 2018, the first year the deduction was available, to 25.7 million in 2022. Pass-through firms accounted for 96% of the 38 million business tax returns filed for the 2019 tax year, which means the QBI deduction touches the vast majority of American businesses. The deduction was originally set to expire after December 31, 2025, but the OBBBA removed that sunset date entirely, making the provision permanent for tax planning purposes going forward.

Does a C Corporation Qualify for the QBI Deduction?

No, a C corporation does not qualify for the QBI deduction. The exclusion is structural rather than income-based. A C corporation is a separate taxable entity that pays federal income tax at the corporate level under IRC Section 11. Corporate profits are taxed at the flat 21% rate, and when those profits are distributed to shareholders as dividends, the shareholders pay tax again at their individual rates. The QBI deduction was created specifically to address the rate disparity between this two-tier corporate structure and the single-tier pass-through structure, so including C corporations in the deduction would defeat its purpose.

The distinction matters for business owners choosing between entity structures. An LLC that has elected to be taxed as a C corporation is treated identically to a traditional C corporation for QBI purposes, which means the LLC's income does not qualify for the 20% deduction regardless of its legal form. The entity's tax classification, not its legal name, determines QBI eligibility. Business owners weighing entity structure decisions should evaluate how the QBI deduction interacts with self-employment tax, reasonable compensation rules, and state-level treatment before settling on a structure. We walk through those considerations during business formation engagements because the decision has tax consequences that last as long as the entity operates.

Do W-2 Employees Get the QBI Deduction?

No, W-2 employees do not get the QBI deduction because wage income earned as an employee is not qualified business income. The exclusion applies regardless of the type of work performed. A consultant working as a W-2 employee for a firm earns wages that are excluded from QBI. The same consultant performing identical work as an independent sole proprietor earns business income that qualifies for the 20% deduction, assuming all other requirements are met. The tax treatment depends on the employment relationship, not the nature of the services.

This distinction creates a measurable gap. A sole proprietor earning $150,000 in qualified business income and claiming the full QBI deduction reduces taxable income by $30,000. An employee earning $150,000 in wages performing the same work receives no QBI reduction. The gap widens as income rises, which is one reason the deduction has attracted attention as an incentive for self-employment and pass-through business formation. A 2022 study by Goodman, Lim, Sacerdote, and Whitten found limited evidence that the deduction significantly altered how taxpayers classified their income in its first year, but the structural incentive remains in the code and becomes more consequential now that the provision is permanent.

What Is a Specified Service Trade or Business?

A specified service trade or business (SSTB) is a trade or business involving the performance of services in certain professional fields identified by Congress, where the principal asset of the business is the reputation or skill of one or more of its employees or owners. SSTBs are not automatically excluded from the QBI deduction. Below the income threshold, SSTB owners claim the deduction exactly as other pass-through owners do. The exclusion phases in as income rises above the threshold and becomes complete once income exceeds the upper limit.

The SSTB categories are defined in IRC Section 199A(d)(2) and Treasury Regulation Section 1.199A-5. The complete list includes: health and medical services, law, accounting, actuarial science, performing arts, consulting, athletics, financial services, brokerage services, investing and investment management, trading or dealing in securities, commodities, or partnership interests, and any trade or business where the principal asset is the reputation or skill of one or more employees or owners. That last category, the reputation-or-skill provision, captures businesses whose income derives primarily from endorsements, licensing of an individual's image or likeness, or appearance fees.

Can You Give Me an Example of an SSTB?

An example of an SSTB is a law firm organized as a partnership, a medical practice operating as an S corporation, a CPA firm, a financial advisory practice, or a self-employed consultant. Each of these businesses generates income from professional services in a field specifically listed under IRC Section 199A(d)(2). A solo attorney earning $300,000 in partnership income and filing as a single taxpayer is well above the 2026 SSTB phase-out threshold of $276,750 and receives no QBI deduction. The same attorney earning $180,000 falls below the $201,750 threshold and claims the full 20% deduction.

The classification is not always obvious. A business that provides both consulting services and product sales may need to separate the consulting revenue, which falls under the SSTB definition, from the product revenue, which does not, if each line of business generates at least 5% of total gross receipts. Treasury Regulation Section 1.199A-5(c)(2) provides a de minimis rule: a trade or business with gross receipts of $25 million or less is not treated as an SSTB if the SSTB-related receipts represent no more than 10% of total gross receipts. For businesses with gross receipts above $25 million, that threshold drops to 5%.

What Kind of Businesses Qualify for SSTB?

Businesses that qualify as SSTBs include any business operating in health, law, accounting, actuarial science, performing arts, consulting, athletics, financial services, or brokerage. The IRS interprets these categories broadly. "Health" covers physicians, dentists, nurses, physical therapists, psychologists, and other licensed health care providers. "Consulting" covers businesses providing advice and counsel for a fee, but specifically excludes businesses that sell goods or provide training. "Financial services" covers wealth management, retirement planning, and advisory services, but does not include banking or lending businesses. "Athletics" covers athletes, coaches, and team managers whose income derives from athletic competition or performance.

Several professions that sound like they belong on the list are specifically excluded. Engineering and architecture are not SSTBs, even though they are licensed professions. Real estate brokerage is not an SSTB. Insurance brokerage that involves the sale of insurance products is not a financial services SSTB. These distinctions matter because misclassifying a non-SSTB as an SSTB costs the business owner a deduction they are entitled to, while misclassifying an SSTB as a non-SSTB creates an audit exposure. Getting the classification right is part of the annual proactive tax strategy work that protects the deduction.

What Is the QBI SSTB Threshold for 2026?

The QBI SSTB threshold for 2026 is $201,750 for single filers and $403,500 for married couples filing jointly, per Rev. Proc. 2025-32. Below those thresholds, SSTB owners claim the full QBI deduction without regard to the nature of their business. Above those thresholds, the SSTB exclusion begins to phase in. The deduction phases out completely at $276,750 for single filers and $553,500 for joint filers.

The OBBBA expanded the phase-in range from the original TCJA levels. Under the TCJA, the phase-in range was $50,000 for single filers and $100,000 for joint filers. The OBBBA widened those ranges to $75,000 and $150,000, respectively, effective for tax years beginning after December 31, 2025, according to OBBBA Section 199A amendments. The wider range means more SSTB owners whose income falls in the transitional zone will receive at least a partial deduction, rather than losing the deduction entirely as they would have under the original narrower range.

Filing Status2025 Lower Threshold2025 SSTB Full Exclusion2026 Lower Threshold2026 SSTB Full ExclusionSingle$197,300$247,300$201,750$276,750Married Filing Jointly$394,600$494,600$403,500$553,500Phase-In Range$50,000 / $100,000N/A$75,000 / $150,000N/A

At What Income Level Is QBI Phased Out?

The QBI deduction begins to phase out at $201,750 for single filers and $403,500 for joint filers in 2026, and the phase-out operates differently depending on whether the business is an SSTB or a non-SSTB. For SSTB owners, the deduction phases down to zero across the phase-in range. Once taxable income exceeds $276,750 (single) or $553,500 (MFJ), no QBI deduction is available for SSTB income regardless of wages paid or property owned.

For non-SSTB owners, the income threshold triggers a different set of limitations rather than a complete exclusion. Above the threshold, the deduction is limited to the greater of 50% of W-2 wages paid by the business or 25% of W-2 wages plus 2.5% of the unadjusted basis immediately after acquisition (UBIA) of qualified property held by the business. Non-SSTB owners never lose the deduction entirely based on income alone, but the wage and property limitations can reduce it significantly for service businesses that employ few workers and hold little depreciable property.

What Are the Limitations on the QBI Deduction?

The limitations on the QBI deduction include the SSTB exclusion, the W-2 wage and property test, the taxable income cap, and the overall 20% ceiling. These four limitations interact in a specific order, and each one can reduce or eliminate the deduction even for businesses that otherwise qualify.

1. SSTB exclusion. Specified service trade or business income is fully excluded from QBI once the owner's taxable income exceeds the upper threshold. Below the lower threshold, the SSTB classification has no effect. Between the thresholds, a partial deduction is available based on the owner's applicable percentage.
2. W-2 wage and qualified property test. Above the income threshold, the deduction for each qualified trade or business cannot exceed the greater of 50% of W-2 wages allocable to the business, or 25% of W-2 wages plus 2.5% of the UBIA of qualified depreciable property held by the business. This limitation means that businesses with high income but no employees and no depreciable assets face a severely reduced or zero deduction.
3. Taxable income cap. The QBI deduction cannot exceed 20% of the taxpayer's taxable income minus net capital gains and qualified dividend income. A business owner with $100,000 of QBI but only $80,000 of taxable income after other deductions receives a QBI deduction of $16,000 (20% of $80,000), not $20,000 (20% of QBI).
4. Section 199A cannot create a loss. Negative QBI from one business reduces the QBI from other businesses, and any net negative QBI carries forward to the next tax year as a loss from a qualified business. The deduction itself is limited to zero for any given year.

Each limitation operates independently, and the most restrictive one controls the final deduction. A Virtual CFO engagement that includes income modeling can project which limitation will bind in a given year and identify levers to pull before December 31, such as accelerating W-2 wage payments, making retirement contributions to reduce taxable income below the threshold, or purchasing depreciable property to increase the UBIA component.

What Income Is Excluded from QBI?

Income excluded from QBI includes capital gains and losses, investment interest, wage income, guaranteed payments to partners, reasonable compensation from an S corporation, income not effectively connected with U.S. business activity, commodities and foreign currency gains and losses, certain dividends, and annuities not connected to the business. Each of these items is specifically carved out of the QBI definition under IRC Section 199A(c)(3) and (c)(4), and including any of them in the QBI calculation produces an overstatement that creates filing risk.

The two exclusions that cause the most planning complications are reasonable compensation from an S corporation and guaranteed payments from a partnership. S corporation owners must pay themselves a reasonable salary for services performed, and that salary is excluded from QBI even though it originates from the same business that generates the qualifying income. Setting reasonable compensation too high reduces QBI and shrinks the deduction. Setting it too low triggers IRS scrutiny and potential reclassification of distributions as wages. The balance between these two risks is a judgment call that depends on the owner's role, the industry, and comparable compensation data. Guaranteed payments from partnerships operate similarly, reducing QBI for the partner who receives them. Restructuring guaranteed payments as allocated profit has been a common planning response, and IRS data confirms that some partnerships reduced guaranteed payments after the TCJA specifically to preserve QBI, according to the Goodman, Lim, Sacerdote, and Whitten study.

Investment income is the other common source of error. Capital gains, dividends, and interest income that are not allocable to the trade or business are excluded from QBI. Business owners who commingle personal investment accounts with business accounts sometimes include investment income in the QBI calculation inadvertently. Maintaining clean separation between business and personal financial statements is the single most effective way to prevent that error.

Are LLCs Eligible for QBI Deduction?

Yes, LLCs are eligible for the QBI deduction as long as the LLC is taxed as a sole proprietorship, a partnership, or an S corporation rather than as a C corporation. An LLC is a legal entity, not a tax classification. The IRS does not recognize "LLC" as a tax category. Instead, a single-member LLC defaults to sole proprietorship treatment, a multi-member LLC defaults to partnership treatment, and either can elect S corporation or C corporation treatment by filing the appropriate form.

The LLC's tax election determines QBI eligibility. An LLC taxed as a sole proprietorship reports income on Schedule C, and that income qualifies for the QBI deduction under the standard rules. An LLC taxed as a partnership reports income on Form 1065, and the partners' shares of QBI flow through on Schedule K-1. An LLC that has filed Form 8832 to elect C corporation treatment is taxed at the entity level and does not produce QBI for its owners. The election is the dividing line, not the LLC designation itself. Business owners exploring entity options should evaluate QBI impact alongside self-employment tax, payroll tax, and liability considerations. We cover that analysis during startup advisory work with new businesses choosing their initial structure.

Can an S Corp Owner Take the QBI Deduction?

Yes, an S corp owner can take the QBI deduction on the portion of business income that passes through to the owner's individual return as profit, but the reasonable compensation paid to the owner as wages is excluded from QBI. An S corporation owner who receives $200,000 in total economic benefit, split as $80,000 in wages and $120,000 in distributions, has $120,000 of potential QBI from the distribution portion plus any remaining business income allocable to them. The $80,000 in wages is excluded.

The split between wages and distributions is the primary planning lever for S corporation owners. The American Farm Bureau Federation reports that over 25.9 million businesses claimed a Section 199A deduction on their 2021 tax returns, and a substantial portion of those claims came from S corporations where the wage-versus-distribution split directly determined the deduction amount. We see this calculation routinely in our work with business profitability strategies, because the same dollar classified as wages versus distributions produces a measurably different tax result.