Tax Planning for Dental Practices: SSTB Classification, Equipment Depreciation, Associate Compensation, and Practice Sales

Dental practices combine high personal income (the average general dentist earns $180,000-$250,000, while specialists earn $300,000-$700,000+) with high equipment costs and significant practice goodwill, creating a tax planning profile where the SSTB limitation under IRC 199A is the central challenge. The SSTB classification under Treas. Reg. 1.199A-5(b)(2)(ii) explicitly names dentists as health care providers, so there is no ambiguity in the classification. The planning strategies focus on reducing taxable income below the phase-out threshold (through retirement plans, equipment depreciation, and deferred compensation) rather than trying to argue non-SSTB status. For dentists whose income cannot be brought below the threshold, the planning shifts to maximizing deductions through equipment timing, retirement contributions, and S-Corp payroll tax optimization.

How should dental practice owners minimize taxes?

What should dentists check beyond the big equipment buys?

Next to a CBCT scanner, the recurring costs of practicing each have their own rule. Dues to the ADA and your state dental association aren’t treated as club dues, so they’re generally deductible. Continuing education that maintains or improves your skills as a dentist is deductible for the owner, and so are dental license renewals and other regulatory fees.

Associates who are W-2 employees can’t deduct CE, dues or license fees they pay themselves. If the practice pays those costs, it deducts them as its own business expenses. Malpractice insurance is deductible too, though a policy prepaid for several years is deducted one year at a time.

How do medical practice equipment purchases affect taxes?

Medical equipment (imaging machines, dental chairs, surgical instruments) is depreciable property. Most equipment falls into the 5-year or 7-year MACRS recovery period. Section 179 allows immediate expensing up to $2,500,000 for 2025 ($2,560,000 for 2026), limited to taxable income from your active trades or businesses, and bonus depreciation (100% for property acquired after January 19, 2025) applies to any remaining cost and can create a loss. Leasing versus purchasing has different tax treatment: operating lease payments are fully deductible as rent expense, while a capital lease is treated as a purchase for depreciation purposes. For high-value equipment financed through loans, the interest is deductible separately from the depreciation on the equipment itself.

This guide is general information, not tax advice for your specific situation. Which points apply, and how, depends on your facts.