The QBI Deduction: What Pass-Through Owners Actually Get

The Section 199A qualified business income deduction lets most pass-through owners deduct up to 20% of business profit before federal income tax is calculated. It is permanent now, and for tax year 2026 you get the full benefit if your taxable income stays under $201,750 (single or head of household) or $403,500 (married filing jointly). Above those numbers the rules split in two directions, and which one applies depends on what your business does.

Figures below are for tax year 2026. On a 2025 return the numbers differ: thresholds were $197,300 and $394,600, phase-in ranges were narrower, and the $400 minimum deduction did not exist. The 2025 law change was not retroactive.

What counts as QBI

QBI is net income from a U.S. trade or business you own through a pass-through: sole proprietorship, single-member LLC, partnership, multi-member LLC, S-corporation, or certain trusts and estates. C-corporations do not qualify. What QBI is not:

• Not revenue, and not net profit either. QBI is net profit reduced by the deductible half of self-employment tax, self-employed health insurance, and self-employed retirement contributions. A $150,000 Schedule C usually produces QBI closer to $138,000.
• Not investment income. Capital gains, dividends, and interest are out.
• Not your S-corp salary. Reasonable compensation is W-2 income.
• Not foreign income. QBI must be effectively connected with a trade or business conducted in the United States.

The cap almost every article skips

The deduction is the lesser of 20% of QBI, or 20% of (taxable income minus net capital gain).

That second figure is usually smaller, because taxable income is your income after the standard deduction ($16,100 single / $32,200 joint for 2026). Any clean 20%-of-profit number you see quoted is a ceiling, not an estimate.

Two other limits. The deduction does not reduce self-employment tax, Social Security, or Medicare tax — federal income tax only. And it cuts taxable income but not AGI, so it will not help you clear an AGI-based phase-out or credit.

Section 199A was set to expire after 2025. The One Big Beautiful Bill Act, signed July 4, 2025, made it permanent. The House version proposed a 23% rate and that figure circulated widely; the final law kept 20%.

The 2026 thresholds

These are measured on taxable income — not revenue, not net profit, not AGI — and before the QBI deduction itself. Comparing gross receipts to them is the most common self-diagnosis error.

Married filing separately does not mirror single; those figures are half the joint amounts and sit $25 above the single ones. All are indexed annually, so confirm the current year's numbers.

The 2025 law widened the phase-in ranges, from $100,000 to $150,000 for joint filers and $50,000 to $75,000 for everyone else. Those are the widths of the ranges, not thresholds. If you have read that a service business owner is restricted above $75,000 or $150,000 of income, that is wrong and expensive — it would tell a consultant earning $180,000 they are phased out when they qualify in full.

Above the threshold, two different things happen

There is no universal cliff. This is where the misreadings live.

For a non-SSTB, nothing goes to zero automatically — a contractor with real payroll can keep the full 20% at any income. The flip side catches people: a business with no employees and no depreciable property has 50% of $0 in wages, which is $0. Above the range, that owner loses the deduction entirely despite not being an SSTB.

The cliff is real for SSTBs. A single filer with $280,000 of taxable income and $200,000 of SSTB income gets nothing. The forgone deduction is $40,000, and part of it would have offset the 35% bracket, so sitting just over the line costs well into five figures a year. Levers to get back below: SEP-IRA, solo 401(k), SIMPLE, or defined benefit contributions; HSA contributions; a donor-advised fund gift; deferring year-end invoicing. All need lead time.

Are you actually an SSTB?

SSTBs include health, law, accounting, actuarial science, performing arts, athletics, consulting, financial services, brokerage, and investing or trading. Engineering and architecture are expressly excluded, which matters in Florida's construction and development economy.

The catch-all for businesses whose principal asset is "the reputation or skill" of the owner sounds enormous, but the regulations confine it to endorsement income, licensing your image, likeness, name, signature, voice, or trademark, and appearance fees. Being skilled at your trade does not make you an SSTB. Plenty of service providers self-classify wrongly and give up a deduction they were entitled to.

What it is actually worth

Illustration only. Single filer, Schedule C net profit of $150,000, no employees, standard deduction, no other income.

The saving is not 24% of the deduction, because the deduction pushes part of the income out of the 24% bracket into the 22%. Add health insurance or a retirement contribution and QBI falls further, trimming the deduction while cutting total tax by more. Generic "savings by income level" tables mislead for exactly this reason.

New for 2026: a $400 floor

For tax years beginning in 2026, if you have at least $1,000 of QBI from businesses in which you materially participate, you are guaranteed a minimum $400 deduction, inflation-adjusted going forward. It exists for side businesses that would otherwise get a token deduction.

The S-corp salary trade-off

Salary carries payroll tax and is excluded from QBI. Distributions are QBI-eligible but build no W-2 wage base. Below the threshold, lower salary generally means more QBI. Above it, salary is what keeps the 50%-of-wages limit from zeroing you out. Setting salary artificially low to inflate QBI invites reclassification; reasonable compensation is not optional.

Rental real estate is harder than it looks

Material participation is the wrong test. Rental real estate qualifies only if the activity rises to a Section 162 trade or business, or meets the Rev. Proc. 2019-38 safe harbor: separate books and records per rental enterprise, 250 or more hours of rental services a year (or in three of the last five for older enterprises), contemporaneous time logs, and a signed statement attached to the return. Triple-net leases and property you use as a residence are excluded outright. If you own Florida rentals and claim QBI because you manage them yourself, that position needs a second look.

Two rules that surprise people

Loss carryforward. A net QBI loss carries forward and reduces the following year's QBI. A storm-disrupted year that ends in a loss can wipe out the deduction in the profitable year after it.

Aggregation. You may elect to aggregate commonly controlled businesses so they share W-2 wages and qualified property. Above the threshold, with an operating company and a related property entity, that election is often the difference between a full deduction and none.

Florida, and non-resident founders

Florida has no personal income tax, so the whole benefit lands as federal savings. Owners in states that decouple from Section 199A see part of it clawed back; you do not. Do not read that as "this cuts my entire tax bill" — self-employment tax is untouched. And if you are weighing a C-corp conversion, Florida does impose a corporate income tax on C-corporations, which get no QBI deduction at all.

For non-resident founders: QBI covers only income effectively connected with a U.S. trade or business; foreign-source income is excluded. A Delaware C-corporation, the standard structure for founders raising outside capital, gets no QBI deduction. If you own a U.S. LLC taxed as a partnership or disregarded entity and file Form 1040-NR, the deduction may be available on your effectively connected income, subject to the same thresholds and limits.

What to do next

1. 01Project your 2026 taxable income, not revenue, and compare it to the thresholds.
2. 02Settle whether your business is an SSTB rather than assuming.
3. 03Within about $25,000 of a threshold? Treat this as a planning year. Retirement contributions and timing must happen before year end; entity changes need far longer.
4. 04Above the range and not an SSTB? Track W-2 wages and qualified property basis, and evaluate an aggregation election.
5. 05Document material participation for any side business with $1,000 or more of QBI to lock in the $400 minimum.
6. 06Check that Form 8995 or 8995-A is completed correctly. The simplified form only works below the threshold.
7. 07Have the conversation by mid-year. By the time the return is prepared, most levers are gone.

Accounting BOSS works with small business owners in Orlando, Jacksonville, and Miami, and with non-resident founders forming U.S. companies. If you want your QBI position modeled against your real numbers, get in touch.

General information, not tax advice for your situation. Tax figures are indexed annually; confirm current amounts before acting.