Quick answer: A healthy dental practice runs at roughly 60% overhead — meaning about 40 cents of every dollar collected is left before the dentist’s own pay and debt. Once overhead creeps past 65%, take-home pay erodes fast. Overhead is not one number; it’s five or six categories, and most “leaks” hide in staffing, supplies, and lab.
What “overhead” actually means for a dental practice
Overhead is every cost of running the practice except the owner-dentist’s compensation and debt service — staff wages, supplies, lab, facility, and administration. It’s usually expressed as a percentage of collections (money actually received), not production (what you billed). That distinction matters: a practice can look busy and still bleed cash if it produces a lot but collects poorly.
The reason dentists obsess over overhead is simple: whatever is left after overhead is what pays the dentist and the practice loan. A five-point swing in overhead on a $1.2M practice is $60,000 — often the difference between a good year and a stressful one.
Healthy overhead benchmarks by category
These are commonly cited targets for a general practice. Yours will vary by region, specialty, and whether you own or lease your building, but they’re a useful yardstick:
- Staff (wages + payroll taxes + benefits): ~25–28% of collections — the single biggest line, and the easiest to let creep.
- Dental supplies: ~5–7%.
- Lab fees: ~8–10% (higher for crown-and-bridge–heavy practices).
- Facility / occupancy (rent, utilities): ~5–8%.
- Office & administrative: ~3–5%.
- Marketing: ~2–5%.
Add those up and you land near 60%. If your total is drifting toward 65–70%, one or more categories is out of range — and the category, not the total, tells you where to look.
Where the money actually leaks
- Staffing overruns. Payroll above ~28% of collections is the most common cause of high overhead — often from overstaffing during a slow stretch or wage creep that never got re-based to production.
- Weak collections. If you measure overhead against production instead of collections, you flatter the number and hide an AR problem. Uncollected production is overhead you’re paying for with nothing to show.
- Insurance write-offs. Contractual adjustments (the gap between your fee and the PPO allowed amount) quietly shrink every dollar. If write-offs aren’t tracked as their own line, you can’t see how much a plan is really costing you.
- Supply and lab drift. No purchasing controls, too many vendors, or a lab mix that has crept up without a fee adjustment.
- Owner “convenience” spending run through the practice that isn’t really practice overhead, distorting the picture.
Worked example
A general practice collects $1,200,000 for the year. Here’s the overhead:
- Staff: $360,000 (30%)
- Supplies: $78,000 (6.5%)
- Lab: $120,000 (10%)
- Facility: $84,000 (7%)
- Admin: $54,000 (4.5%)
- Marketing: $42,000 (3.5%)
Total overhead = $738,000, or 61.5%. That leaves ~$462,000 for the dentist’s compensation and debt. Notice staff is at 30% — three points high. Re-basing staffing to 27% would free roughly $36,000 a year, dropping overhead to about 58.5% and putting that money straight into the owner’s pocket. Same chairs, same patients — different number.
How to keep overhead in line
- Measure against collections, monthly. Build a profit-and-loss statement with overhead broken into the categories above, as a percent of collections, every month.
- Track your collection ratio. Collections ÷ production should sit in the high 90s. Anything lower is a leak upstream of overhead.
- Break out insurance write-offs as their own line so you can see the true cost of each plan.
- Re-base staffing to production at least annually — payroll should scale with the practice, not ratchet up permanently.
- Benchmark quarterly and investigate any category that drifts more than a point or two out of range.
Common mistakes
- Watching only the total overhead number. 62% total can hide a 32% staffing problem offset by underspending on marketing. Categories tell the story.
- Using production, not collections. It makes overhead look better and buries collection problems.
- Ignoring write-offs. Contractual adjustments are a real cost of your payer mix — track them.
- Cutting supplies to fix a staffing problem. Cutting the wrong category starves the practice without fixing the leak.
- Reviewing overhead once a year at tax time. By then, twelve months of drift have already cost you.
Frequently asked questions
What is a good overhead percentage for a dental practice?
Roughly 60% of collections for a general practice is a common healthy target, leaving about 40% before the dentist’s compensation and debt. Specialties and high-cost-of-living areas vary, but sustained overhead above 65% usually signals a fixable problem.
Should overhead be calculated on production or collections?
Collections. Measuring against production overstates your efficiency and hides accounts-receivable and write-off problems. Overhead as a percent of collections reflects the money you actually have to work with.
What’s the biggest driver of high dental overhead?
Staffing. Wages, payroll taxes, and benefits are the largest single category, typically 25–28% of collections. Payroll creeping above that range is the most common reason overhead runs high.
Do insurance write-offs count as overhead?
Write-offs are contractual adjustments, not an expense line, but they directly reduce collections — so they shrink the base your overhead is measured against. Tracking them separately shows the true cost of each insurance plan.
How often should I review my overhead?
Monthly, with a category-level P&L, and a deeper benchmarking review each quarter. Annual-only reviews let small leaks compound into a full year of lost profit.
Know your numbers before they cost you
Dental practice accounting is its own discipline — production versus collections, insurance write-offs, and category-level overhead don’t behave like a normal small business, and a generalist bookkeeper rarely catches the drift. Precision Accounting & Consulting runs a dedicated dental practice group — the roots of our broader medical practice accounting division, and part of our accounting organized by industry approach — giving practice owners monthly, benchmarked numbers they can actually run the business on. Reach out for a look at your overhead by category.
This article is for general informational purposes only and does not constitute tax, legal, or accounting advice. Benchmarks are industry rules of thumb and vary by practice. Consult a qualified professional about your specific situation.
Overhead is one number in a wider picture; accounting practices for a dental practice covers the monthly routine that keeps it under control.
Overhead percentage is only meaningful once you know how associate and owner compensation models are structured, since owner compensation is often the largest single line inside the number.
Talk to an accountant who works in your industry
Precision Accounting & Consulting works with contractors, law firms, medical practices and property owners across the country. If something on this page raised a question about your own books, send it over and we will give you a straight answer.