How Much Should a Dental Practice Owner Pay Themselves?

If you run your practice as an S-corp, you've already made the right entity choice for most dentists netting over $80K. But there's a second decision that matters just as much: how much of that income flows as W-2 salary versus owner distributions.

The salary you set isn't arbitrary — it directly controls your FICA tax bill, how much you can shelter in a solo 401(k), whether you qualify for the QBI deduction, and whether your return survives an IRS audit. Getting it wrong in either direction costs real money.

The core tension

Every dollar of W-2 salary is subject to FICA: 7.65% employee-side plus 7.65% employer-side on the first $184,500, then 1.45% + 1.45% on income above that.¹ Distributions from an S-corp avoid that FICA entirely.

So the instinct is to minimize salary and maximize distributions. The IRS knows this, which is why they require reasonable compensation. But there's a second force pulling in the other direction: your solo 401(k) employer contribution is capped at 25% of your W-2 wages.² Pay yourself less, and you can shelter less.

The optimal salary balances these two forces. For most dental practice owners, that number is somewhere between $140K and $210K — but the right answer depends on your net practice income, your age, and whether you're stacking a cash balance plan.

IRS reasonable compensation: the floor

There's no IRS-published safe harbor for reasonable compensation. The standard from the courts and IRS guidance is that a shareholder-employee must receive a salary "comparable to what similar businesses pay for the same services."³ For a dentist who is the sole clinical producer in a practice, "similar businesses" means what dental practices pay a producing dentist — not a DSO executive, not an administrative role.

Paying yourself $40,000 while extracting $350,000 in distributions is an IRS audit target. The agency has pursued and won cases against dentists, physicians, and other service-business owners doing exactly this. A successful reclassification means back FICA plus interest and penalties on the reclassified wages.

A defensible floor: your W-2 salary should approximate what you'd pay a replacement dentist to do the same clinical work. Per ADA survey data, a full-time associate dentist earns $170,000–$220,000 in most markets.⁴ That's a reasonable starting point for a practice owner's salary discussion.

How your salary drives your solo 401(k) space

For an S-corp owner with a solo 401(k), you have two contribution buckets:²

• Employee deferral: Up to $24,500 in 2026 (plus $8,000 catch-up if age 50–59 or 64+; plus $11,250 super catch-up if age 60–63) — funded from your W-2 paycheck
• Employer contribution: Up to 25% of your W-2 compensation — funded by the practice as a business expense

These two buckets combined cannot exceed $72,000 for 2026 (or $80,000 / $83,250 with catch-up contributions).²

The implication: if you max your employee deferral at $24,500, you need a W-2 salary of at least $190,000 for the employer contribution (25% × $190K = $47,500) to fill the remaining $47,500 to hit the $72,000 combined ceiling. Below $190K in W-2 pay, you're leaving tax-deferred space on the table.

Compensation scenarios for a $400K net practice

Below is the math for a practice owner under age 50, MFJ, netting $400K from the practice before their own compensation and employer retirement contributions.

The $190K row is the inflection point for a base solo 401(k): above this salary, you're paying incremental FICA with no additional retirement plan benefit. The FICA increase from $190K to $250K is roughly $1,300 per side — real money with no tax shelter offset.

QBI deduction context for dental practice owners

Dental practices are classified as "specified service trades or businesses" (SSTBs) under IRC §199A because healthcare qualifies. For SSTB owners, the 20% qualified business income (QBI) deduction phases out based on total taxable income — not just how you split salary vs distributions.⁵

2026 SSTB phase-out thresholds (post-OBBBA, which made QBI permanent with widened ranges):⁵

• MFJ: Full deduction below $403,500; phases out $403,500–$553,500; no deduction above $553,500
• Single: Full deduction below $201,750; phases out $201,750–$276,750; no deduction above $276,750

Most dental practice owners netting $300K–$550K (MFJ) are in or near the phase-out range. The QBI-eligible income is your S-corp pass-through (K-1 box 1), not your W-2 salary. A higher salary reduces K-1 income, which reduces your QBI base — but the phase-out threshold applies to your total taxable income, so the salary split has limited effect on whether you qualify. The better lever for QBI optimization is reducing total taxable income through retirement plan contributions.

When to revisit your salary

Set your salary once a year, before December — not mid-year unless income has changed materially. Three triggers that warrant a formal adjustment:

• Practice revenue changed by more than 20% (acquisition, added associate, or dropped a major insurance plan)
• You added or removed a cash balance plan (changes the compensation basis for contributions)
• IRS wage base increased significantly (the SS wage base climbs most years; the FICA cost profile changes)

Work with both your CPA (who owns the payroll/tax side) and your financial advisor (who models the retirement plan contribution impact). These two often don't talk to each other — which is where dentists end up with technically defensible but financially suboptimal salaries.

Common mistakes

• Salary set once, never revisited. A $120K salary set when the practice was netting $180K looks very different now that it's netting $450K.
• Optimizing FICA without modeling the 401(k) cost. Cutting salary from $180K to $100K saves ~$6,100 in FICA — but sacrifices $20,000 in employer 401(k) contributions and $120,000 in pre-tax retirement compounding over 20 years.
• Forgetting that employee deferrals must be withheld from W-2 paychecks. If your salary is $150K and you want to defer $24,500 employee, you need enough gross payroll to support that withholding. Some dentists underfund payroll and then wonder why they can't make the full deferral.
• Ignoring the W-2 wage limitation for the rare SSTB owner below threshold. If your income is below the QBI phase-out floor (uncommon for most practice owners), the W-2 wage limitation on the deduction does apply — and higher W-2 wages let you take a larger deduction. Ask your CPA.