QBI for health professionals: the SSTB phase-out explained

Do clinicians get the QBI deduction?

Yes — clinicians can claim the qualified business income deduction, but income decides how much survives. The deduction is worth up to 20% of qualified business income for a pass-through business, and a solo practice filing Schedule C, an S corporation, or a partnership all qualify in principle 1Ref 1Internal Revenue Service (2026).Qualified Business Income Deduction.That the section 199A QBI deduction is up to 20% of qualified business income and that health care is an SSTB whose deduction phases out over a taxable-income range.2Ref 2Internal Revenue Service (2026).Self-employed individuals tax center.That a self-employed clinician files Schedule C and pays self-employment tax separately from income tax — the QBI deduction touches only the income-tax side.. The complication is that health care is a specified service business, which caps the benefit for higher earners.

One clarification up front: the QBI deduction only touches income tax. It does nothing for your se tax, which is computed separately on your net earnings 2Ref 2Internal Revenue Service (2026).Self-employed individuals tax center.That a self-employed clinician files Schedule C and pays self-employment tax separately from income tax — the QBI deduction touches only the income-tax side.. They are two different bills, and this one shrinks only the income-tax side.

The SSTB rule and why it bites

The catch is the specified service trade or business (SSTB) rule. Health care is explicitly an SSTB, and for an SSTB the QBI deduction is limited — and eventually eliminated — as taxable income climbs past the thresholds the IRS publishes each year 1Ref 1Internal Revenue Service (2026).Qualified Business Income Deduction.That the section 199A QBI deduction is up to 20% of qualified business income and that health care is an SSTB whose deduction phases out over a taxable-income range.. A non-SSTB business faces a different, wage-and-property-based limitation instead; a clinical practice faces the harder one. This is why two owners with identical profit can get very different deductions: the SSTB label is doing the work.

Below, within, and above the threshold

Think of taxable income in three zones. Below the lower threshold, an SSTB clinician gets the full up-to-20% deduction with no service-business penalty 1Ref 1Internal Revenue Service (2026).Qualified Business Income Deduction.That the section 199A QBI deduction is up to 20% of qualified business income and that health care is an SSTB whose deduction phases out over a taxable-income range.. Within the phase-out range between the lower and upper thresholds, the deduction shrinks on a sliding scale. Above the upper threshold, an SSTB's QBI deduction is generally gone entirely. The exact dollar figures are set annually and inflation-adjusted, so pull the current-year numbers from the IRS before you plan around them.

• Below the threshold: full deduction available.
• In the phase-out range: partial, shrinking with income.
• Above the upper threshold: generally none for an SSTB.

Retirement contributions are the biggest lever

Because the phase-out is driven by taxable income, the practical move is to lower taxable income legitimately — and retirement contributions are the biggest lever. A SEP-IRA (up to 25% of compensation within the limits) or a one-participant 401(k) (deferrals plus an employer contribution) can each cut taxable income by a large amount 3Ref 3Internal Revenue Service (2026).Simplified Employee Pension plan (SEP).That a SEP-IRA allows employer contributions up to 25% of compensation within annual limits, lowering taxable income.4Ref 4Internal Revenue Service (2026).One-participant 401(k) plans.That a one-participant 401(k) permits employee deferrals plus an employer contribution under the annual limits, lowering taxable income..

For a clinician sitting in or just above the phase-out range, a contribution can buy back part of a QBI deduction on top of its own tax deferral — two benefits from one move. Model it before year-end, while there is still time to fund the account.

Equipment and the Section 179 election

Buying equipment can also lower the taxable income the phase-out watches. The Section 179 election and bonus depreciation let you expense qualifying equipment — exam-room gear, computers, furniture — in the year you place it in service instead of spreading it over years 5Ref 5Internal Revenue Service (2026).Publication 946, How To Depreciate Property.That the Section 179 election and bonus depreciation let a practice expense qualifying equipment in the year it is placed in service.. That deduction reduces taxable income the same way a retirement contribution does, so a needed purchase timed before year-end can nudge you back under a threshold 5Ref 5Internal Revenue Service (2026).Publication 946, How To Depreciate Property.That the Section 179 election and bonus depreciation let a practice expense qualifying equipment in the year it is placed in service..

Buy what the practice actually needs, though. A deduction is never worth more than the cash it costs, and a purchase made only for the write-off still leaves you out of pocket.

Home office and everyday deductions

Everyday deductions matter too, because they all reduce the same taxable-income figure the phase-out watches. A qualifying home office — used regularly and exclusively for the practice — is deductible by the simplified method at $5 per square foot up to 300 square feet, or by actual expenses 6Ref 6Internal Revenue Service (2026).Home office deduction.That the home-office deduction requires regular and exclusive business use, with a simplified method at $5 per square foot up to 300 square feet.. Continuing education, licensure fees, malpractice premiums, and supervision are ordinary and necessary business costs that come off the top as well 7Ref 7Internal Revenue Service (2026).Guide to business expense resources.That ordinary and necessary costs like CE, licensure fees, malpractice premiums, and supervision are deductible, reducing taxable income..

None is dramatic alone, but stacked they can be the difference between just over and just under a threshold. Keep the substantiation for every one of these; a deduction you cannot document is a deduction you may lose.

Put the levers together before year-end

Put the levers together and time them before the year closes. Because the SSTB phase-out is decided by taxable income, the plan is to project where you will land, then use retirement contributions, needed equipment, the home office, and ordinary deductions to bring taxable income down toward the threshold — legitimately, for things the practice actually needs. Run the projection with your CPA in the fall, when a contribution or a purchase can still change the year. Your quarterlies should reflect the deduction too, so you are not overpaying along the way.