Tax Guide for Dentists (2025)
Dentists earn a median salary of $166,300. Practice owners face self-employment tax and can leverage significant business deductions for equipment, staff, and continuing education. The typical salary of $166,300 results in an estimated $124,599 take-home pay after federal income tax and FICA.
Quick Tax Snapshot
Gross Salary
$166,300
Median for dentists
Federal Income Tax
$28,979
Single filer, standard deduction
FICA Taxes
$12,722
Social Security + Medicare
Estimated Take-Home
$124,599
After federal tax + FICA
Key Tax Deductions for Dentists
Dental equipment and technology (Section 179 expensing, practice owners)
Continuing education (CE) courses and dental conferences (practice owners)
Malpractice and professional liability insurance (practice owners)
Office rent, supplies, and lab fees (practice owners)
Student loan interest (subject to income phase-outs)
What to know at this income level
Between $130,000 and $200,000 you cross into the 24% bracket at $103,350 taxable income (single). The marriage penalty or bonus becomes significant at this level — filing jointly can shift your brackets materially. You are approaching the Social Security wage base ($176,100 in 2025), meaning your SS tax stops accruing above that amount. Roth IRA direct contributions phase out between $150,000 and $165,000 (single), pushing higher earners toward the backdoor Roth strategy.
24% bracket strategy
At the 24% bracket, pre-tax 401(k) contributions save 24 cents per dollar — significantly more than at 22%. Maxing out the $23,500 limit saves $5,640 in federal tax. If you are over 50, the catch-up contribution adds another $7,500. Use calculator →
Roth IRA income phase-out
Direct Roth IRA contributions phase out between $150,000 and $165,000 MAGI for single filers in 2025. Above $165,000, use the backdoor Roth strategy — contribute to a Traditional IRA and convert to Roth. There is no income limit on conversions. Use calculator →
Social Security wage base
Social Security tax (6.2%) stops at $176,100 in 2025. If you earn $180,000, you effectively get a "raise" in your final paychecks of the year when SS withholding stops. Medicare (1.45%) has no cap and continues on all earnings. Use calculator →
Marriage tax implications
At this income, marriage significantly affects taxes. If both spouses earn similar amounts, you may face a marriage penalty (higher combined tax). If one spouse earns much more, you likely get a marriage bonus. Use our marriage calculator to model the difference. Use calculator →
Typical roles at this level: Senior engineers and developers, managers and directors, physicians in training, experienced lawyers, airline pilots, senior federal employees (GS-14/15), and established small business owners.
Frequently asked questions
What tax deductions can dentists who own a practice claim?
Practice-owner dentists can deduct office rent, staff wages, dental supplies, lab fees, equipment purchases (using Section 179 or bonus depreciation), malpractice insurance, CE courses, and professional dues. Equipment like digital X-ray systems and CAD/CAM machines can often be fully expensed in the year of purchase under Section 179, up to $2,500,000 in 2025.
Should dentists form an S-Corp for their practice?
Many dentists benefit from S-Corp election once net practice income exceeds $80,000-$100,000. As an S-Corp, you pay yourself a reasonable salary subject to FICA and take remaining profits as distributions not subject to self-employment tax. This can save $10,000-$20,000 or more in FICA taxes annually at higher income levels. Consult a CPA to determine the optimal salary-to-distribution split.
What retirement plans work best for dentists?
Solo practice owners can establish a Solo 401(k) allowing up to $70,000 in total contributions for 2025 ($23,500 employee + employer match up to 25% of compensation). Group practices can offer traditional 401(k) plans. Cash-balance pension plans are popular among high-income dentists, allowing additional tax-deferred contributions of $100,000+ per year depending on age.
What is the backdoor Roth IRA and do I need it?
The backdoor Roth is a two-step process: (1) contribute to a Traditional IRA (no income limit), then (2) convert it to a Roth IRA. It is used by high earners who exceed the Roth IRA income limit ($165,000 single in 2025). The strategy works best if you have no existing pre-tax IRA balances — otherwise the pro-rata rule can create tax complications.
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