For entrepreneurs, consultants, and small business owners, the Qualified Business Income (QBI) deduction—often referred to as Section 199A—has been a significant component of the tax code since its introduction. By allowing eligible pass-through entities (such as LLCs, S-Corporations, and partnerships) to deduct up to 20% of their qualified business income, it offers a meaningful way to manage effective tax rates.

However, as business revenue grows and legislative environments shift, the mechanics of claiming this deduction become increasingly complex. The QBI deduction is not a flat discount applied universally; it is governed by a strict set of income thresholds and business classifications that require proactive, year-round planning to navigate effectively.

The Complexity of Phase-Out Guardrails

The QBI deduction is relatively straightforward for businesses with lower taxable incomes. But as a business owner’s income climbs, the IRS applies stringent limitations based on your total taxable income.

To determine if your business qualifies for the full 20% deduction, you must measure your total taxable income against the exact IRS phase-out thresholds:

• For Tax Year 2025: Under the previous TCJA rules, the deduction begins to phase out when taxable income exceeds $197,300 for single filers and $394,600 for married couples filing jointly. The 2025 deduction is completely eliminated once taxable income exceeds $247,300 (single) and $494,600 (joint).
• For Tax Year 2026: The One Big Beautiful Bill Act made the QBI deduction permanent and officially expanded the phase-out ranges. Starting in 2026, the phase-out range for married couples filing jointly increases to $394,600 – $544,600. For single/other filers, the expanded range is $200,000 – $275,000. Furthermore, taxpayers with at least $1,000 of qualified business income who materially participate are now guaranteed a new minimum deduction of $400.

If your total taxable income exceeds these designated phase-out thresholds, your ability to claim the full 20% deduction is restricted. The rules are particularly rigid for those operating a “Specified Service Trade or Business” (SSTB)—a category that includes medical practices, law firms, accounting practices, and consulting agencies. For high-earning SSTBs, the deduction phases out entirely at $544,600 for married joint filers in 2026.

Even for non-SSTB businesses, crossing the income threshold means the deduction becomes limited by a complex formula tied to the W-2 wages the business pays and the unadjusted basis of its qualified property.

Strategic Considerations for QBI Optimization

When analyzing a business owner’s tax posture, we generally look at three primary levers to optimize the QBI deduction:

1. The S-Corp Wage Balance For those operating as an S-Corporation, owners are required to pay themselves a “reasonable salary” via W-2. Because the QBI deduction for higher earners is frequently limited to 50% of the W-2 wages paid by the business, structuring payroll becomes a delicate balancing act.

• Lower Wages: Setting a salary too low artificially limits the QBI deduction because the W-2 wage benchmark is insufficient.
• Higher Wages: Setting a salary too high unnecessarily reduces the overall Qualified Business Income (since W-2 wages reduce the net business profit), shrinking the base number the 20% deduction is calculated against.

Finding the optimal mathematical balance for your salary requires running detailed projections that weigh payroll taxes against potential QBI savings.

2. Managing AGI Through Retirement Vehicles If a business owner’s taxable income is approaching the phase-out thresholds, a highly effective strategy is to deliberately reduce Adjusted Gross Income (AGI). This is where business tax optimization aligns seamlessly with long-term retirement planning.

By utilizing high-capacity retirement vehicles—such as a Solo 401(k), a SEP IRA, or a Cash Balance Pension Plan—owners can defer significant amounts of income. This not only builds long-term wealth but also lowers current-year taxable income, potentially dropping the owner back below the phase-out limits and preserving the 20% deduction.

3. Routine Entity Evaluation A business structure that was highly efficient during the startup phase may become a tax liability as the company matures. Regular reviews of entity structure are vital. An ongoing analysis should determine whether remaining a sole proprietor, electing S-Corp status, or exploring other structures best supports the current revenue model and long-term exit strategy.

The Suttle Crossland Perspective

At Suttle Crossland Wealth Advisors, we view tax planning as an ongoing, integrated component of wealth management rather than an annual reporting exercise. Complex tax codes present an opportunity for intentional, forward-looking strategy.

By examining how your business operations, compensation structure, and retirement goals interact, we aim to build resilient financial plans that preserve your wealth and provide clarity through your life’s transitions. If you are navigating these thresholds and would like an objective, fiduciary review of your business structure, our team is available to help you evaluate your options.