What Is Normal Overhead for a Dental Practice?

Almost every practice owner asks some version of the same question: “Is my overhead normal?” The honest answer is that there is no single normal number. There is a range that most healthy general practices fall into, and there are good reasons a particular office might sit above or below it. This guide explains what belongs in overhead, how to calculate it, the category ranges consultants typically work with, and how to tell whether your number points to a real problem.

What counts as overhead in a dental practice

Overhead is the cost of running the practice before the owner gets paid. It includes team wages and benefits, payroll taxes, dental supplies, lab fees, rent or occupancy, equipment leases and repairs, software, marketing, insurance, professional fees and office expenses. It is usually expressed as a percentage of collections, not production, because collections are the money you actually have to spend.

What it should not include, if you want to compare yourself to anyone else:

• The owner dentist’s salary, draws or distributions. These are the return on your clinical work and ownership, not a cost of running the office.
• Associate dentist compensation, which most consultants track as a separate line because it varies so much with how many associates you employ.
• Loan principal payments. Principal reduces debt; it is not an expense on the P&L, even though it uses cash.
• One-time items such as a remodel, a new CBCT purchase or a legal settlement, which should be noted separately so they do not distort a single month.

Many practices disagree with a benchmark simply because their bookkeeper puts the owner’s health insurance, car or retirement contribution inside operating expenses. Before you compare, read our guide on how to read a dental practice P&L and make sure owner-related items are separated. Then plug your own numbers into our dental overhead calculator to see each category next to these ranges.

How to calculate your overhead percentage

The formula is short: overhead % = operating expenses ÷ collections × 100. The work is in deciding what goes into each side. A reliable calculation follows the same steps every time:

1. Pull the last twelve months of your P&L, not one month. A single month can be distorted by a large lab bill, a quarterly insurance premium or a slow holiday week.
2. Start with total expenses, then remove the owner’s wages, payroll taxes on those wages, owner benefits and perks, associate dentist pay, depreciation, amortization and interest.
3. Remove one-time items such as a remodel or legal settlement, and note them so you can explain the difference later.
4. Use total collections for the same twelve months as the denominator, not gross or net production.
5. Divide, then repeat the calculation for each category (team, supplies, lab, facility, marketing, admin) so you can see which line is driving the total.

For example, a practice with $1,100,000 of collections and $760,000 of total expenses might look like it runs 69% overhead. If $70,000 of that is the owner’s health insurance, retirement contribution and vehicle, and $25,000 is depreciation, true operating overhead is $665,000, or about 60%. Same practice, very different conclusion.

Typical overhead ranges by category

The figures below are the kind of rule-of-thumb ranges dental consultants and CPAs commonly use for a general practice. They are not survey results, they vary between advisors, and they shift with your specialty, payer mix and market. Treat them as a starting point for questions, not a pass or fail grade.

Notice that the category lows add up to less than 55% and the highs to more than 65%. Few practices sit at the top of every range at once; a practice with high lab costs often has lower supply costs, and an office in an expensive building may spend less on marketing because the location brings patients in. Judge the total first, then the categories.

A specialty practice, a practice heavy in PPO patients, or a brand-new office still building its patient base can all land outside that total range without anything being wrong. Startups in particular often run high overhead for the first year or two because fixed costs arrive before the schedule fills. Our guide to what it costs to open a dental practice in Northern Virginia covers that ramp-up period.

What each point of overhead is worth

Every point of overhead equals 1% of collections that either reaches the owner or does not. The table shows operating profit before owner pay at different overhead levels. It is simple arithmetic, but it puts small improvements in perspective.

At $1.2 million of collections, moving from 65% to 60% is worth $60,000 a year before tax. That money pays the owner, services practice debt and funds retirement contributions, so overhead is ultimately a measure of how much of your clinical work you keep.

Staff cost: the line that matters most

Team cost is usually the largest single expense, and it is the one owners worry about most. It should include gross wages, the employer share of Social Security and Medicare, federal and state unemployment taxes, health and retirement benefits, and payroll-processing fees. Leaving out payroll taxes and benefits is the most common reason a practice thinks its staff cost is lower than it really is.

What a team member really costs

The employer pays 6.2% Social Security tax (on wages up to $184,500 in 2026) and 1.45% Medicare tax on all wages, according to the IRS, on top of federal and Virginia unemployment taxes. Take an illustrative hygienist paid $80,000 a year. Employer Social Security and Medicare add $6,120. Add, say, $7,000 of health insurance, $2,400 of retirement match and a few hundred dollars of unemployment tax and payroll fees, and the real cost is closer to $96,000. If your staff line only shows gross wages, it is understated.

A percentage alone can mislead. A practice with a strong hygiene department may carry more payroll and still be more profitable, because hygiene produces revenue. A better test is production per team member hour, or hygiene production compared to hygiene wages. If staff cost is high and production per hour is low, the issue is usually scheduling or staffing levels. If staff cost is high but production per hour is strong, you may simply be paying for a team that earns its keep. For local pay context, see dental hygienist, assistant and front-desk pay in Virginia.

Supplies and lab: small percentages, steady leaks

Supplies and lab fees are variable costs. They should rise and fall with production. When they climb as a percentage of collections without a matching change in procedure mix, look for:

• Multiple people ordering from multiple vendors with no monthly budget.
• Expired or duplicate inventory sitting in operatories and storage.
• Remakes and lab adjustments that never get tracked back to a cause.
• Lab invoices coded to supplies (or the reverse), which makes both lines unreadable.

A simple fix is a monthly supply budget set as a percentage of the prior month’s collections, with one person responsible for ordering against it. At 6% of $100,000 of monthly collections, that is a $6,000 ordering budget for the following month. Lab is harder to budget because it follows treatment, so track it per case instead: lab cost per crown, remake rate, and which lab each case went to.

Why your overhead percentage may look high

Overhead is a ratio, so it can rise because costs went up or because collections went down. Consider a practice collecting $1.2 million a year with $780,000 in operating costs. That is 65% overhead. If the same practice collects $1.35 million with the same costs, overhead drops to about 58% without cutting a single expense. In many offices the faster path to a healthier ratio is fixing collections, case acceptance and the schedule rather than trimming supplies.

Common reasons a ratio looks worse than the practice really is:

1. Owner perks or family members on payroll are coded as operating expenses.
2. Large one-time purchases were expensed in a single month.
3. Collections are lagging production because of insurance delays or a weak collection rate.
4. Heavy PPO participation is lowering the fees collected per procedure. See what PPO write-offs cost your practice.

Fixed versus variable costs

Splitting overhead into fixed and variable costs makes the numbers far more useful. Rent, loan payments, software subscriptions and base salaries stay roughly the same whether you produce $80,000 or $120,000 in a month. Supplies, lab and some hourly wages move with volume. Once fixed costs are covered, a larger share of each additional dollar collected becomes profit. That is why adding one productive hygiene day, or filling holes in the schedule, often improves margin more than any cost cut.

Here is the effect in round numbers. Suppose a practice has $55,000 a month of fixed costs and variable costs (supplies, lab, some hourly pay) of about 15% of collections. At $100,000 of collections, overhead is $70,000, or 70%. At $115,000, it is $72,250, or about 63%. The extra $15,000 of collections cost only $2,250 to produce, so $12,750 of it reaches the bottom line.

How to lower overhead without hurting care

Cutting the wrong costs, such as a well-run hygiene department or a recall coordinator, can raise your overhead percentage by shrinking collections. Work through both sides of the ratio:

Grow the denominator

• Fill open chair time with an active hygiene recall system and a short-notice list.
• Improve case acceptance on diagnosed treatment that is already in the chart.
• Tighten insurance verification and claim follow-up so collections keep pace with production.
• Review fee schedules once a year, and look hard at the lowest-paying PPO plans before renewing them.

Trim the costs that do not earn their keep

• List every software subscription and recurring charge; cancel what nobody uses.
• Consolidate supply ordering under one person and one or two primary vendors.
• Track lab remakes by cause and compare lab pricing on your most common cases.
• Ask what each marketing channel produced in new patients, and move money from the ones that cannot answer.
• Check merchant fees, insurance premiums and the lease renewal date, which are often set once and never revisited.

How overhead affects practice value

Buyers and lenders look at normalized earnings: what the practice earns after true operating costs, with owner-specific items added back. Lower sustainable overhead means higher earnings, and higher earnings usually mean a higher valuation and easier financing. The reverse is also true: costs that are really owner perks but are not documented make a practice look less profitable than it is. Our guide to how dental practices are valued explains how those add-backs work.

How to measure overhead consistently

• Use the same chart of accounts every month so categories do not drift. Our dental bookkeeping basics guide shows a simple structure.
• Look at trailing three-month and twelve-month averages, not one month at a time.
• Track overhead as a percentage of collections and as dollars. A falling percentage with rising dollars is fine; rising dollars with flat collections is not.
• Set a simple trigger for follow-up, such as any category moving more than two points above its three-month average.
• Review it alongside the other numbers in our dental practice KPIs guide, since overhead rarely moves on its own.

A worked example

Here is how the numbers might look for a general practice collecting $1,400,000 a year, with owner and associate pay already removed. The figures are illustrative, chosen to show how to read a breakdown rather than to set a target.

Nothing in this example is alarming, but two questions are worth asking. First, is team cost at 29% supported by strong hygiene production, or is the schedule leaving hours unused? Second, would lab fees drop if remakes were tracked? Each percentage point of overhead in this practice is worth $14,000 a year, which puts small improvements in perspective.

Now compare a second practice with the same collections and 68% overhead. Before cutting anything, check whether owner benefits are buried in team costs, whether a large equipment purchase was expensed, and whether collections dipped during the year. Often one or two of those explain most of the gap, and the remaining difference points to the one or two categories that deserve real attention.

Startups, specialists and multi-location practices

General practice ranges do not fit every office. Orthodontic, pediatric and oral surgery practices have very different supply, lab and staffing profiles. Multi-location groups add management and administrative layers that a single office does not carry. A startup carries a full lease, loan payments and a team before the schedule is full, so its overhead percentage usually starts high and falls as collections grow. In each case, compare yourself to your own trend and to similar practices rather than to a general practice benchmark.

Getting an outside look at your numbers

If your overhead looks out of line and you cannot tell why, a structured review usually finds the answer faster than cutting costs line by line. Cisor’s Cisor Metrics practice analysis compares your categories against typical ranges, separates owner items from true overhead and points to the few changes most likely to matter. You can request a practice analysis or reach the team at (703) 345-0606.