The QBI Deduction's Wage Limitation: Why High-Income Business Owners Get Less Than They Expect

The Qualified Business Income deduction under IRC §199A allows eligible pass-through business owners to deduct up to 20% of qualified business income. OBBBA made the deduction permanent and expanded the phase-in range for higher-income taxpayers beginning in 2026. But for owners above the taxable income threshold, the deduction is not always a simple 20%. Two additional limitations may apply: one based on W-2 wages paid by the business, and one based on the unadjusted basis of certain depreciable property.

When the Wage Limitation Kicks In

The QBI deduction is not limited by W-2 wages or qualified property when taxable income is below the §199A threshold.

For 2026, the threshold is $403,500 for married taxpayers filing jointly, $201,775 for married taxpayers filing separately, and $201,750 for all other filers. Once taxable income exceeds the threshold, the wage and property limitations begin to phase in.

For 2026, the phase-in range is $150,000 for joint filers and $75,000 for other filers. That means the limitations are fully phased in at $553,500 for married taxpayers filing jointly, $276,775 for married taxpayers filing separately, and $276,750 for all other filers.

Below the threshold, the deduction is generally 20% of qualified business income, subject to the overall limitation of 20% of taxable income minus net capital gain and the rules defining what counts as QBI. Above the threshold, the wage and qualified property limits can reduce the deduction. Above the top of the phase-in range, those limits apply in full.

What the Wage Limitation Actually Does

At and above the upper threshold, your QBI deduction is limited to the greater of two alternative calculations. The first alternative is 50% of the W-2 wages paid by the qualified trade or business during the year. If the business paid $200,000 in W-2 wages, the deduction is limited to $100,000—regardless of how large the QBI is. The second alternative is 25% of W-2 wages plus 2.5% of the unadjusted basis immediately after acquisition (UBIA) of qualified property. Qualified property is tangible depreciable property used in the business, measured at its original purchase price before depreciation. The deduction is the greater of the two alternatives.

The practical result: businesses with high QBI and low W-2 wages face a significant reduction in their deduction. A sole proprietor with $500,000 of net profit and no employees pays no W-2 wages to anyone—so the 50% of wages calculation produces zero, and the 2.5% of UBIA calculation may also be small if the business has few fixed assets. The QBI deduction for that business may be substantially less than 20% of QBI even though the business is profitable.

The S-Corp and Wage Strategy Interaction

S-corp salary planning is connected to the QBI deduction, but reasonable compensation comes first.

An S-corp shareholder-employee’s W-2 salary creates W-2 wages for the business, which may help support the wage-based QBI limitation. But that same salary also reduces QBI, because wages are deducted before QBI is calculated.

That creates a real modeling issue. A higher salary may increase the wage limitation, but it may also reduce the QBI base. A lower salary may increase QBI, but it may not be defensible under the S-corp reasonable compensation rules and may reduce the wage limitation.

The goal is not to manipulate wages for the QBI deduction. The goal is to determine a defensible reasonable compensation amount first, then model how that compensation affects the QBI deduction, payroll taxes, retirement contributions, and the full return.

Specified Service Trades or Businesses

Specified Service Trades or Businesses, or SSTBs, face a separate limitation.

SSTBs include many professional service fields, including health, law, accounting, actuarial science, performing arts, consulting, athletics, financial services, brokerage services, investing and investment management, trading, dealing in securities, and certain businesses involving income from a person’s reputation or skill, such as endorsements, licensing an individual’s name or likeness, or appearance fees.

For SSTBs, the QBI deduction phases out once taxable income exceeds the threshold. Above the top of the phase-in range, SSTB owners generally receive no QBI deduction from that business, regardless of wages paid or qualified property owned by the business.

Tax preparation and accounting services are generally treated as SSTBs. Tax professionals and advisors should know where their own firms fall before assuming the full 20% deduction is available.

Planning Strategies

For non-SSTB businesses at or above the income threshold, planning to maximize the QBI deduction typically focuses on one or more of three levers: increasing W-2 wages paid (which may conflict with SE tax minimization goals), increasing qualified property purchases (which increases the UBIA-based alternative calculation), or reducing taxable income below the threshold through retirement contributions, additional deductions, or income shifting. Each of these strategies has its own trade-offs and needs to be modeled against the full return picture—not optimized in isolation.

The Aggregation Election

Taxpayers with multiple qualified trades or businesses can make an aggregation election to treat them as a single trade or business for QBI deduction purposes. This matters for the wage limitation because W-2 wages and UBIA from multiple businesses are combined—a business with high wages but lower income can support the deduction for a related business with high income but fewer employees. The aggregation election has specific requirements: the businesses must be commonly owned, share facilities or centralized business elements, or be part of the same supply chain. The election must be made on a timely filed return and is binding in future years unless a change in circumstances occurs. For multi-entity business owners, this analysis can meaningfully increase the QBI deduction.

The QBI deduction is valuable, but it is not a standalone calculation. For higher-income business owners, it interacts with reasonable compensation, retirement contributions, entity structure, taxable income planning, qualified property, and SSTB classification. The safest approach is to model the full return, document the assumptions, and avoid making business decisions solely for the deduction.

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