The QBI Deduction for Clinicians: The 23% Rule Explained

What the QBI Deduction Is

Section 199A of the tax code allows owners of pass-through businesses (sole proprietorships, LLCs, S-Corps, partnerships) to deduct up to 20% of their qualified business income from their taxable income.

In plain terms: if your clinical practice earns $200,000 in qualified business income, you might deduct $40,000 -- saving roughly $8,800-$14,800 in federal taxes depending on your marginal rate.

This deduction was designed to give pass-through business owners a benefit comparable to the corporate tax rate reduction that C-Corps received in 2017. It is one of the most valuable tax provisions available to self-employed clinicians, but the rules are complex.

The SSTB Problem for Clinicians

Healthcare is classified as a Specified Service Trade or Business (SSTB). This means the QBI deduction works differently for clinicians than for, say, a real estate investor or a manufacturing business owner.

For non-SSTB businesses, the QBI deduction is available at all income levels (subject to W-2 wage and property limitations at higher incomes).

For SSTBs like healthcare, the deduction phases out at higher income levels:

2026 Phase-Out Thresholds (estimated -- confirm with CPA):

• Single/Head of Household: $191,950 - $241,950
• Married Filing Jointly: $383,900 - $483,900

Below the lower threshold: full 20% deduction, no limitations.

Within the phase-out range: partial deduction, calculated on a sliding scale.

Above the upper threshold: zero deduction for SSTB income.

Who Qualifies in Practice

Clinicians most likely to qualify:

• Early-career clinicians with lower income
• Part-time 1099 clinicians (hybrid W2/1099)
• Clinicians in lower-paying specialties
• Married clinicians whose combined household income stays below $383,900
• Clinicians who use retirement contributions to reduce taxable income below the threshold

Clinicians who typically do not qualify:

• Full-time 1099 specialists earning above $250K (single) or households above $484K (MFJ)
• High-earning clinicians without significant retirement contributions or other deductions

The Math

Example 1: CRNA Filing Single, $180,000 QBI

QBI: $180,000

Below single threshold of $191,950? Yes.

Full 20% deduction: $36,000

Tax savings at 32% marginal rate: $11,520

Example 2: Physician Filing MFJ, $420,000 Combined QBI

Combined QBI: $420,000

Within MFJ phase-out range ($383,900 - $483,900)? Yes.

Phase-out calculation: ($483,900 - $420,000) / $100,000 = 63.9% remaining

Partial QBI deduction: $420,000 x 20% x 63.9% = $53,676

Tax savings at 35% marginal rate: $18,787

Example 3: Specialist Filing Single, $300,000 QBI

QBI: $300,000

Above single threshold of $241,950? Yes.

QBI deduction: $0

Planning Strategies to Maximize QBI

If your income is near the phase-out threshold, strategic planning can preserve some or all of your QBI deduction.

Maximize Retirement Contributions

Retirement contributions reduce your taxable income and can push you below the QBI threshold. A $70,000 Solo 401(k) contribution can bring a $260,000 earner below the single threshold.

Consider Filing Status

The MFJ threshold ($383,900) is exactly double the single threshold ($191,950). If both spouses earn income, filing jointly provides the higher threshold. If only one spouse earns income, there is no penalty.

Time Income Strategically

If you can shift income between tax years (by timing contract payments, accelerating or deferring expenses), you may be able to stay below the threshold in one or both years.

Charitable Giving

Donor-advised funds allow you to bunch charitable contributions into a single year, reducing AGI below the threshold. Contribute several years' worth of intended giving in one year, then distribute grants from the fund over time.

S-Corp Salary Considerations

Your W-2 salary from an S-Corp is not QBI -- only distributions count. A higher reasonable salary reduces your QBI, which reduces your QBI deduction. But the self-employment tax savings from the S-Corp structure usually far outweigh the lost QBI deduction. Run both scenarios with your CPA.

Common Misconceptions

"I make too much, so I cannot use it." Maybe. But if you are within the phase-out range, a partial deduction can still be worth thousands. Do not assume -- calculate.

"The deduction reduces my self-employment tax." No. QBI deduction reduces income tax only. Self-employment tax is calculated separately, before the QBI deduction.

"I can structure around the SSTB classification." Be very careful. The IRS has anti-abuse rules designed to prevent recharacterizing healthcare income as non-SSTB income. Schemes involving separate entities or management companies are high audit risk.

Understanding your QBI eligibility requires a CPA who knows 1099 healthcare. CCA members connect with tax professionals who specialize in independent clinician finances. Learn more.