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Orthodontics is a rewarding specialty, but it comes with a tax bill to match. You collect fees over 18 to 24 months of treatment, invest heavily in scanners and 3D printers, and often earn enough to lose some of the best deductions. Without a plan, you could be handing the IRS far more than you need to.
Good tax planning for orthodontists isn’t about loopholes. It’s about timing, structure and knowing the rules that apply to a practice like yours. Let’s look at how it works.
Why Tax Planning for Orthodontists Needs Its Own Playbook
Long treatment plans blur your income
A general dentist is usually paid around the time of treatment. Orthodontists are different. A patient might pay a $1,500 down payment today and then monthly installments for the next two years.
If your practice uses cash-basis accounting, you’re generally taxed when the money comes in, not when the contract is signed. That gives you room to plan, but only if your books clearly track contracts, payments received and balances still owed.
Expensive technology changes the math
Intraoral scanners, in-house aligner printing and CBCT imaging can easily run into six figures. These purchases are a major tax opportunity when handled correctly, and a missed one when they’re not.
Four Tax Planning Moves Every Orthodontist Should Know
- Write off equipment in the year you buy it
For 2026, Section 179 allows up to $2,560,000 of equipment to be expensed, and 100% bonus depreciation is permanent for qualifying property. In plain terms, most orthodontic equipment can be deducted in full in the year it’s placed in service.
For example, if you install a $90,000 3D printing setup in November, that full amount can come off this year’s taxable income. Just be sure it’s up and running before December 31.
- Look beyond the standard 401(k)
A 401(k) lets you defer $24,500 in 2026, with total contributions of up to $72,000 once profit sharing is added. For many orthodontists, that’s only the start.
A cash balance plan, which is a type of defined benefit plan, can allow much larger deductible contributions, especially for owners in their 50s. It works best for practices with steady profits and a small staff.
- Review your entity and salary
If your practice is an S corporation, the salary you pay yourself is subject to payroll taxes, while the remaining profit is not. Finding a reasonable salary that holds up to IRS scrutiny can save thousands each year.
- Watch the QBI deduction thresholds
The qualified business income (QBI) deduction lets some owners deduct up to 20% of business income. Because orthodontics counts as a health-related service business, the deduction phases out at higher incomes. For married couples filing jointly in 2026, that phase-out runs from $403,500 to $553,500 of taxable income.
If you’re close to that range, a well-timed retirement contribution or equipment purchase can bring your income down and restore part of the deduction.
How the Right Accountant for Dentist and Orthodontic Practices Helps
What they’ll do for you
An experienced accountant for dentist and orthodontic practices will:
- Project your tax bill mid-year, not after December
- Track treatment contracts and payments so income is reported correctly
- Plan equipment purchases around your income and the QBI thresholds
- Coordinate retirement plan contributions with your cash flow
What to look for when hiring
Ask how many orthodontic practices they work with, how often you’ll meet and whether they understand treatment contract accounting. If they can’t explain how a 24-month payment plan affects your taxes, keep looking.
Tax planning for orthodontists works best when it happens all year, not just in April. With a specialist in your corner, you can make confident decisions about equipment, retirement and growth, and keep more of the income your hard work creates.
