US general dental practices typically run overhead of 60 to 65 percent of collections. That range only means something if your own number is computed the same way the benchmark is: same denominator, same expense categories, owner compensation excluded.
This article is educational and is not tax, legal, or investment advice. Consult your CPA, attorney, or licensed adviser about your specific situation.
Overhead percentage is the number dentists compare at study clubs, the number practice brokers quote, and the number that decides whether a practice producing well is also keeping anything. It is also one of the most commonly miscomputed figures in dental practice finance, because two practices can report “overhead” from the same profit and loss statement and mean different things: one strips the owner’s compensation out, the other leaves salary and personal expenses buried in operating costs. This article lays out the standard definition, the category-level benchmark ranges, what a healthy margin looks like against current industry data, the reasons your own percentage may be misleading, and a repeatable method for computing a number you can actually compare.
What counts as dental practice overhead
Dental practice overhead is the operating cost of running the practice before the owner dentist is paid. That means staff wages, lab fees, clinical supplies, rent and facilities, marketing, and administrative costs count; the owner’s salary, draws, distributions, and personal expenses routed through the practice do not. Practices that leave owner compensation inside operating expenses report overhead percentages that look alarming and are not comparable to anyone else’s.
The denominator matters just as much. Overhead is commonly benchmarked as a percentage of collections, not production. Production is what you billed; collections is what actually arrived. Dental Buyer Advocates, a practice-purchase advisory firm, describes this convention in the context of practice valuation: overhead as a share of collections, with owner compensation excluded, is the practitioner convention that lets one practice’s number be read against another’s. Divide by production instead and your percentage shrinks by whatever your write-offs and adjustments are, which flatters the number without changing the economics.
An illustrative pair: two practices with identical operations, where one computes overhead against collections with owner pay excluded and reports 62 percent. The other divides by production with the owner’s salary left in and reports 78 percent. Neither practice changed anything real. Only the first number can be compared to a benchmark.
Overhead benchmarks by expense category
Whole-practice overhead is a blunt instrument. A practice at 63 percent could be efficient everywhere or wildly over in one category and under in another. Category-level ranges are where a benchmark becomes actionable. The ranges below are industry benchmark ranges aggregated by ZenOne, a dental procurement platform, from 2023 to 2025 published sources, expressed as a percentage of collections for a US general practice.
| Category | Benchmark range | Notes |
|---|---|---|
| Staff and payroll | 25% to 30% | Wages, payroll taxes, and benefits for non-owner team members. Usually the largest single category. |
| Lab fees | 6% to 8% | 8% to 10% is typical for prosthodontic-heavy case mixes. Read this line against your service mix before judging it. |
| Clinical supplies | 4% to 6% | Consumables and small instruments. Sensitive to ordering discipline and vendor pricing. |
| Occupancy | 6% to 10% | Rent or mortgage, utilities, property costs. Largely fixed, so the percentage falls as collections grow. |
| Marketing | 2% to 7% | Higher end is normal in a growth phase or a new practice; mature practices with full schedules sit low. |
| Other admin and technology | 2% to 8% | Software, insurance, professional fees, office costs, continuing education. |
A few reading rules. First, these are ranges, not targets: a pediatric practice with no lab spend and a removable-prosthetics practice at 9 percent lab can both be perfectly run. Second, the categories interact: a practice that invests in staff to keep chairs full may run high on payroll and low on marketing, and the total is what pays the bills. Third, overhead percentage tends to fall as collections grow, because occupancy, core staffing, and technology costs are substantially fixed. A practice collecting more spreads those fixed costs across a larger denominator. That is a general pattern, not a per-size-band figure, and it is one reason comparing your percentage against a practice half or twice your size can mislead.
What a good dental practice profit margin looks like
Margin is the mirror image of overhead. As an illustration, if overhead before owner compensation is 62 percent of collections, the practice’s margin before owner compensation is 38 percent. That margin is what funds the owner’s compensation, debt service on the practice loan, equipment reinvestment, and actual profit. For a typical general practice running 60 to 65 percent overhead, that leaves 35 to 40 percent of collections.
The industry income data gives that margin a face. The American Dental Association’s Health Policy Institute reports average net income of $215,320 for general practitioners and $346,520 for specialists in private practice in 2025, per its Survey of Dental Practice. Those figures are the downstream product of the overhead percentage: two practices with identical collections can land six figures apart in owner income purely on overhead discipline.
The trend line is the reason this deserves monthly attention rather than a once-a-year glance. ADA HPI’s Trends in Dentists’ Income analysis found that over a five-year span, practice revenues rose 1.4 percent while expenses rose 4.9 percent. HPI describes the result as a fiscal squeeze: expense growth outruns reimbursement, and dentists’ inflation-adjusted earnings decline. When costs grow at three and a half times the pace of revenue, the margin compresses quietly, one category at a time. A practice that only watches the total finds out late. A practice that tracks the six categories monthly sees which line is drifting while the drift is still a conversation with a supplier rather than a crisis.
Why your overhead percentage looks wrong
When a dentist tells us their overhead is 75 percent (an illustrative but common number), the first question is not “where are you overspending.” It is “what is in the number.” Two distortions account for most bad overhead percentages.
The owner-comp trap. The owner’s salary, draws, family members on payroll above market rate, the vehicle, the personal travel coded to continuing education: when any of these sit inside operating expenses, they inflate the overhead percentage. An illustrative case: a practice with a true 62 percent overhead and $180,000 of owner compensation inside the expense lines presents as a 78 percent practice. The practice looks broken; the bookkeeping is what is broken. The fix is structural: owner compensation and owner personal items get their own accounts, below the operating expense block, so the overhead computation never touches them.
An inconsistent chart of accounts. If your software lumps lab fees into “cost of services,” splits supplies across four unrelated accounts, and books the hygienist under “contract labor,” your category percentages are not comparable to any benchmark, and this month is not even comparable to last month if a bookkeeper recoded accounts along the way. Benchmarks assume a shared category structure. Peer comparison without one is noise.
A standard dental chart of accounts for overhead tracking
The six benchmark categories above make a serviceable parent-account skeleton for a dental practice chart of accounts:
- Staff and payroll: all non-owner wages, payroll taxes, and benefits, in one parent account.
- Lab fees: external lab invoices only, never mixed with clinical supplies.
- Clinical supplies: consumables and small instruments, separate from office supplies.
- Occupancy: rent, utilities, property insurance, facility maintenance.
- Marketing: every patient-acquisition dollar, from directories to mailers to ads.
- Other admin and technology: software, general insurance, professional fees, office costs.
- Owner compensation (isolated): salary, draws, and owner personal items, parked outside the operating expense block so they never contaminate the overhead number.
Sub-accounts under each parent are fine and useful; the parents are what map to the benchmark table. This structure is the difference between an overhead review that takes ten minutes and one that starts with an afternoon of recoding. Our dental practice bookkeeping service sets books up on exactly this category structure so the percentages fall out of the monthly close instead of requiring a special project.
How to compute an overhead number you can trust
A trustworthy overhead percentage is a trailing-12-month figure on a consistent mapping. One month is too noisy: a quarterly insurance premium or a supply stock-up distorts any single month. Twelve months smooths seasonality and one-time items. The method:
- Pull trailing-12-month collections. Collections, not production, from your practice management system, reconciled against bank deposits so the denominator is real money.
- Strip what does not belong. Remove owner compensation, owner draws and personal items, practice-loan principal, and non-operating items (a one-time equipment sale, an insurance settlement) from the expense side.
- Map every remaining expense to the six categories. Every operating dollar lands in exactly one of staff, lab, supplies, occupancy, marketing, or other admin. No orphan accounts, no “miscellaneous” bucket quietly absorbing spend.
- Divide. Each category total over collections gives the category percentage; the sum gives total overhead. Now the table above is a usable comparison rather than a rough vibe.
- Recompute monthly on the same mapping. The value is the trend. A stable mapping recomputed at each monthly close shows a category drifting upward quarter after quarter, which is exactly the early signal the five-year revenue-versus-expense squeeze punishes practices for missing.
Steps 1 through 3 are where most do-it-yourself attempts fail, because they depend on clean, consistently coded books. Group practices and multi-location clinics add a layer: the mapping has to hold across locations for a roll-up to mean anything, which is the discipline behind our clinic & group practice bookkeeping service. Get the structure right once, and the overhead number stops being an annual archaeology project and becomes a line you read every month.
Know your overhead number every month, not once a year
Booxmax is a boutique accounting, consulting, and reporting firm focused on healthcare practices, and our team includes QuickBooks Online Certified ProAdvisors. We set dental practice books up on the six-category structure above, isolate owner compensation, and deliver category-level overhead percentages at every monthly close. That is the recurring core of dental practice bookkeeping done on a benchmark-ready structure, and you can reach us at (818) 485-2669.
Booxmax is an accounting, consulting, and reporting firm, not a CPA firm, and does not prepare income tax returns, represent clients before the IRS, or provide tax, legal, or investment advice.
FAQ
Does dental practice overhead include the dentist’s salary?
No. The standard convention computes overhead from operating expenses before owner compensation: staff, lab, supplies, occupancy, marketing, and administrative costs count, while the owner’s salary, draws, and personal expenses are excluded. Leaving owner pay inside the expense lines inflates the percentage and makes it incomparable to published benchmarks.
Should overhead be measured against production or collections?
Collections. Production is what you billed; collections is what actually arrived after write-offs and adjustments. Overhead is commonly benchmarked as a percentage of collections, so dividing by production understates your percentage and breaks comparability. Whatever denominator you choose, use it consistently, and know that published ranges assume collections.
Why does staff cost percentage vary so much by practice model?
Because staffing structure differs by model. A practice with multiple hygienists carries higher payroll but generates hygiene revenue against it; a practice using more assisted dentistry runs leaner staff lines. Associate-driven and multi-location practices layer in additional clinical payroll. The 25 to 30 percent benchmark range assumes a typical general practice team.
What is the difference between overhead and profit margin?
They are two views of the same split. Overhead is the share of collections consumed by operating expenses before owner compensation; margin is what remains, or 100 minus the overhead percentage. For example, a practice at 62 percent overhead has a 38 percent margin before owner compensation, which funds owner pay, loan payments, reinvestment, and profit.
How do dental practices lower overhead?
The general levers are visibility and consistency: benchmark each category against published ranges to find which line is actually out of range, renegotiate supply and lab pricing on a regular cycle, and schedule to capacity so fixed costs like rent and core staffing spread over more collections. Category-level tracking shows where to start.