What Is the Section 199A Deduction and Why Does It Matter?
If you operate a business or professional practice as a pass-through entity - a sole proprietorship, partnership, S corporation, or certain trust - the Section 199A qualified business income (QBI) deduction is one of the most valuable tax provisions available to you. Enacted as part of the 2017 Tax Cuts and Jobs Act, it allows eligible taxpayers to deduct up to 20 percent of their qualified business income, potentially reducing the effective federal income tax rate on pass-through profits from 37 percent down to approximately 29.6 percent.
For South Florida professionals - physicians, attorneys, CPAs, consultants, financial advisors, architects, and others who operate their practices through pass-through structures - understanding this deduction and planning around its limitations is critical. The deduction was scheduled to sunset after December 31, 2025, yet the One, Big, Beautiful Bill Act (OBBBA) reinstated the sunsetting law and made in permanent -- with expanded access for many taxpayers.
Peter Lindley brings a rare combination of legal counsel, CPA experience, and an MBA to this analysis, which means he can evaluate both the tax mechanics and the business-structure implications in one conversation. You can learn more about the full range of services at Tax Law and Entity Taxation.
Who Qualifies - and Who Gets Phased Out
The 20 percent deduction sounds straightforward, but Congress layered in income thresholds and business-type restrictions that eliminate or sharply reduce the benefit for many high-earning professionals.
The Income Thresholds
For 2025, the QBI deduction begins to phase out once taxable income exceeds $197,300 for single filers and $394,800 for married filing jointly. Above those thresholds, two additional limitations kick in:
- The W-2 wage and capital limitation. The deduction cannot exceed the greater of (a) 50 percent of W-2 wages paid by the business, or (b) 25 percent of W-2 wages plus 2.5 percent of the unadjusted basis of qualified property.
- The specified service trade or business (SSTB) phase-out. For taxpayers above the threshold range, the deduction for SSTBs phases out entirely.
What Is an SSTB?
This is where many South Florida professionals run into trouble. The IRS defines an SSTB as any trade or business in the fields of health, law, accounting, actuarial science, performing arts, consulting, athletics, financial services, brokerage services, or any business where the principal asset is the reputation or skill of one or more of its employees or owners.
If your income is below the threshold, the SSTB classification does not matter - you still get the deduction. Once you are above the full phase-out range, however, an SSTB cannot claim any deduction. This is a significant issue for many Boca Raton-area physicians, attorneys, and financial advisors whose practices generate substantial income.
Key QBI Deduction Changes Coming for 2026
QBI Deduction Made Permanent - The OBBBA eliminates the 2025 sunset date, ensuring that eligible taxpayers can continue claiming the deduction beyond this year.
Wider Phase-In Ranges - The income ranges over which wage/property and SSTB limitations apply will expand significantly:
From $50,000 to $75,000 for single filers;
From $100,000 to $150,000 for joint filers.
This change could allow higher income taxpayers to retain more of their deduction. Thresholds will continue to adjust for inflation annually.
New $400 Minimum Deduction
Starting in 2026, the law introduces a minimum $400 QBI deduction for taxpayers who (i) materially participate in an active trade or business and (ii) have at least $1,000 of QBI from that business. This provision ensures that eligible small business owners will receive a base-level deduction regardless of wage/property calculations.
Key Strategies for South Florida Professionals
Despite the restrictions, there are legitimate and well-established planning strategies that can preserve or expand the Section 199A deduction. The right approach depends on your income level, business type, and entity structure.
Strategy 1: Splitting SSTB and Non-SSTB Activities
If your practice has components that clearly fall outside the SSTB definition, it may be possible to separate those activities into a distinct entity. For example, a medical group that also owns its building, rents equipment, or provides ancillary services not directly tied to professional reputation may be able to carve out a non-SSTB stream of income that qualifies for the full 20 percent deduction.
This is sometimes called a "crack and pack" strategy. The IRS has issued guidance warning against artificial separations, so the separate entity must have genuine economic substance and operate at arm's length. Getting this right requires coordinated legal and tax counsel. See our overview of Joint Ventures, LLCs & Partnerships for the structural options.
Strategy 2: Optimize Entity Choice and W-2 Wages
Above the income threshold, the W-2 wage limitation can be a significant constraint - or a planning opportunity. If your pass-through entity pays little or no W-2 wages (which is common in single-member LLCs taxed as sole proprietorships), the QBI deduction may be severely limited or zero.
Electing S corporation status and paying yourself a reasonable salary increases W-2 wages, which in turn increases the wage-based deduction ceiling. The tradeoff is that wages reduce QBI, so the optimization requires precise math. Our comparison at LLC vs S-Corp Comparison walks through the structural differences, and the article LLC vs S-Corporation: Choosing the Right Florida Business Structure provides additional context for Florida business owners.
Conversely, some high-asset businesses benefit more from the 2.5 percent of qualified property component than from the W-2 wage component. Real estate professionals and capital-intensive businesses should run both calculations before assuming the wage approach is optimal.
Strategy 3: Manage Taxable Income to Stay Below Phase-Out Thresholds
For some South Florida professionals, the most powerful strategy is simply keeping taxable income below the phase-out thresholds. Several tools can help: - Defined benefit or cash balance pension plans. These can allow contributions well in excess of standard 401(k) limits - sometimes $100,000 to $300,000 or more per year - creating large above-the-line deductions that reduce taxable income. - Qualified opportunity zone investments. South Florida has significant opportunity zone activity, particularly in parts of Miami-Dade and Palm Beach County. Deferring capital gains through a qualified opportunity fund can reduce taxable income in the gain year. - Timing of income and deductions. Accelerating deductible expenses into a year where income is near the threshold, or deferring income where possible, can keep you in a more favorable QBI position. - Charitable giving structures. Donor-advised funds, charitable remainder trusts, and other vehicles can reduce taxable income while furthering philanthropic goals. Our Charitable Organizations practice page has more detail.
Strategy 4: Real Estate and the QBI Deduction
For South Florida investors who own rental real estate, there is an important opportunity: rental income can qualify for the Section 199A deduction if the activity rises to the level of a "trade or business." The IRS created a safe harbor for rental properties - if you document at least 250 hours of rental services per year (or meet other conditions), the activity qualifies.
This is a significant benefit for real estate investors who structure their holdings through LLCs or partnerships. Combined with depreciation deductions, cost segregation studies, and potential 1031 exchange strategies, the QBI deduction can be part of a comprehensive tax minimization plan. For more on Florida real estate tax planning, see Real Estate & 1031 Exchanges and our article on Nuts and Bolts of an Internal Revenue Code Section 1031 Like-Kind Exchange.
Self-rental income - rent paid by your operating entity to a related entity you own - can also qualify under Section 199A when properly structured. This creates an opportunity to shift income from an SSTB to a non-SSTB entity (such as a real estate holding company) that is not subject to the SSTB phase-out.
Strategy 5: Aggregation Elections
The IRS allows qualifying businesses to aggregate multiple pass-through entities for purposes of calculating the W-2 wage and capital limitations. If you own several businesses that share common ownership and meet the IRS grouping criteria, aggregating them may allow you to use W-2 wages or qualified property from one business to support the QBI deduction from another.
This is particularly useful for South Florida professionals who have diversified their holdings across multiple entities - a common approach in the medical, legal, and financial services communities here. Aggregation is an annual election and must be disclosed on your return.
Planning for the QBI Deduction
Review your entity structure now. If you are operating as a sole proprietor or single-member LLC with no W-2 wages, you may be leaving significant deductions on the table. If you have multiple business interests, an aggregation analysis could unlock deductions you are currently unable to use.
The Entity Choice, Formation & Governance and Entity Taxation practice areas are the right starting points for that conversation. Also consider reviewing our Florida Business Formation Guide if you are evaluating a restructuring.
Common Mistakes to Avoid
Several errors show up repeatedly in the QBI deduction context: - Assuming the deduction is automatic. Many tax software programs claim the deduction without analyzing whether the underlying structure actually supports it. The IRS can challenge deductions that are not backed by proper documentation and structure. - Ignoring the reasonable compensation requirement. S corporation owners who pay themselves too little in salary to minimize self-employment taxes may inadvertently reduce W-2 wages in a way that hurts the QBI calculation. - Failing to document rental activity hours. Real estate investors who want to claim QBI on rental income but do not track their hours may lose the safe harbor. - Waiting too long. Entity changes, retirement plan elections, and aggregation strategies often must be in place before year-end to affect that year's taxes.
A Note on Florida's Tax Environment
One advantage South Florida professionals already enjoy is Florida's lack of a state individual income tax. That means the federal QBI deduction is even more impactful here than in states like California or New York, where state taxes layer on top of federal obligations. Florida's business-friendly environment also makes entity restructuring straightforward in most cases. The Business Law overview covers the full landscape of services available to Florida business owners.
For context on broader business structuring decisions, the article Will Your Business's Legal Structure Work? is worth reading alongside this analysis.
Disclaimer
This article provides general legal and tax information for educational purposes only. It is not legal advice and does not create an attorney-client relationship. Tax laws are complex and fact-specific. You should consult a qualified attorney and tax advisor before making any decisions based on this information.
Take the Next Step
The Section 199A deduction is one of the most significant tax planning opportunities available to pass-through business owners and professionals - but capturing it requires the right structure, the right entity elections, and careful annual analysis. Peter Lindley's combination of legal credentials, CPA background, and business experience allows him to integrate these moving parts in a way that a single-discipline advisor often cannot.
If you are a South Florida professional or business owner who wants a thorough review of your QBI deduction position, contact Peter today to schedule a consultation.
Frequently Asked Questions
Can a South Florida attorney or physician still claim the Section 199A deduction if their income exceeds the phase-out threshold?
Generally, no. Attorneys and physicians operate in fields classified as specified service trades or businesses (SSTBs), and once taxable income exceeds the full phase-out range ($272,300 for single filers and $544,600 for married filers in 2026), the deduction is eliminated entirely for those activities. However, if the professional has separate non-SSTB business income - such as rental income from a properly structured real estate entity - that income may still qualify for the deduction.
Does switching to an S corporation increase my Section 199A deduction?
It can, if you are currently operating as a sole proprietor or single-member LLC with no W-2 wages and your income is above the phase-out threshold. An S corporation that pays you a reasonable salary creates W-2 wages, which increases the ceiling on your allowable QBI deduction. However, the salary also reduces your QBI, so the optimal salary level requires careful calculation. Not every professional will benefit from S corporation status for QBI purposes alone.
Does Florida rental income qualify for the Section 199A deduction?
Rental income can qualify if the activity rises to the level of a trade or business under the tax code. The IRS provides a safe harbor for landlords who perform at least 250 hours of rental services per year and maintain contemporaneous records. Self-rental income - where you rent property to your own operating business - can also qualify when properly structured. Florida real estate investors should document their activity carefully to preserve this benefit.
What is the aggregation election and when should I use it?
The aggregation election allows business owners to combine multiple pass-through entities for the purpose of calculating the W-2 wage and qualified property limitations under Section 199A. To aggregate, the businesses must share at least 50 percent common ownership and meet certain other IRS criteria. Aggregation is beneficial when one entity has significant W-2 wages or qualified property that can support the QBI deduction for a related entity with little or no wages. It is an annual election that must be disclosed on your tax return.
How does a defined benefit plan help with the Section 199A deduction?
Contributions to a defined benefit or cash balance pension plan are deductible above the line, meaning they directly reduce your taxable income before the QBI calculation is applied. For high-income South Florida professionals near or above the phase-out threshold, large pension contributions can reduce taxable income into the phase-in range - or below it entirely - restoring some or all of the QBI deduction. These plans require actuarial setup and must be established before year-end for contributions to count in that tax year.