Your Overhead Is 62%. Here's Exactly Where You're Bleeding

Two owners each trimmed their overhead ratio by six tenths of a point last year. One of them put $6,000 in their pocket. The other put $28,451. The ratio moved the same distance in both practices, which is exactly why the ratio is a bad instrument.

Our view: overhead percentage is the wrong metric for a general practice, and most cost-cutting campaigns built on it destroy more money than they save. The reason is structural. Roughly three quarters of what sits inside a 62% overhead number is bought by the hour, not by the procedure. It bills you whether the chair is full or empty. Attack it with a supply audit and you win pennies. Attack it with capacity and you win the practice. You can cut your way to 58% and still take home less than you did at 62%.

The 62% itself is real. A practice-finance column in ADA News, cited by DentalCPAUSA, puts dental overhead at around 62% of production, and Private Practice Research calls 60% to 65% the healthy band for a solo general practice, against 50% to 60% for orthodontics and specialty and 65% to 72% for rural or high-Medicaid-mix practices. So if you're at 62%, you are not sick. You are average. The question is what you do with that.

46 of Your 62 Points Are Bought by the Hour

Take a $1,000,000 general practice at 62%. That's $620,000 of expense before owner compensation and debt service. Using the category benchmarks from DentalCPAUSA and Private Practice Research, it breaks out roughly like this:

• Staff payroll, 24% of collections: $240,000
• Lab, 10%: $100,000
• Clinical supplies, 6%: $60,000
• Occupancy, insurance, taxes and utilities, 6%: $60,000
• Everything else (marketing, software, admin, professional fees), 16%: $160,000

Now sort those lines by what triggers the charge. Lab and supplies are the only two that move with the procedure. That's 16 points. The other 46 points are time-based. You pay the hygienist for the shift, not for the prophy. You pay the assistant for the day, not for the crown prep. Rent, insurance, utilities, practice management software, phone system, the answering service, the marketing retainer: all of it bills on the calendar.

Which means on a day you are already open and already staffed, an incremental dollar of production carries about 16 cents of incremental cost. The marginal margin on filling a chair you've already paid for is roughly 84%. Nothing else in the practice comes close to that.

The $6,000 Supply Win and the $28,451 Hygiene Day

Here are the two owners from the top of this piece.

Owner A runs a supply squeeze. They renegotiate with the distributor, consolidate SKUs, kill the auto-ship on three items and get 10% out of a $60,000 supply line. That's $6,000. Total expense drops to $614,000 and overhead lands at 61.4%. It's a real win and it took four weeks of evenings.

Owner B lights up a dark chair. They have five operatories and two of them run part-time. They add one hygiene day a week in one of those rooms, 46 weeks a year, at $1,200 of hygiene production a day. That's $55,200 of new collections.

The costs. Dental hygienists had a median hourly wage of $42.08 per the U.S. Bureau of Labor Statistics, so an eight-hour shift runs $336.64 and 46 of them cost $15,485. Add coverage for sterilization and front desk: dental assistants had a median annual wage of $48,070 per the Bureau of Labor Statistics, about $23.11 an hour, or $184.88 a day and $8,504 for the year. Hygiene supplies at 5% of that production add $2,760. Total incremental cost: $26,749.

Net new profit: $28,451. And that ignores every restorative case the new hygiene day diagnoses, which is the actual reason to do it.

Now check the ratio. Collections are $1,055,200, expenses are $646,749, and overhead comes to 61.3%. Essentially the same place Owner A got to. Same ratio movement, 4.7 times the money. The two moves differ by $22,451 in cash and by one tenth of a point on the metric everybody manages.

If your dashboard can't tell those two years apart, replace the dashboard.

What Most Owners Get Wrong: They Cut the Capacity That Pays the Rent

The specific mistake belongs to a specific person: the owner who gets a year-end P&L showing 64% overhead, decides payroll is the problem because payroll is the biggest number, and takes 10% out of staff hours.

Watch what that does. Ten percent of a $240,000 payroll is $24,000 of savings. But if those hours were covering chair time, you've just taken capacity offline. Call it an 8% hit to production, $80,000. At an 84% marginal margin, that's $67,200 of contribution gone. You saved $24,000 and lost $67,200, a net destruction of $43,200. Your overhead percentage, meanwhile, gets worse, because you removed the production that the 46 time-based points were being spread across. So the owner cuts again.

We've seen this loop end in a practice that is smaller, slower, more fragile and no more profitable. We wouldn't run it. If staff cost is genuinely out of band, the fix is to move production per staffed hour, not to remove staffed hours.

Second version of the same error: benchmarking against the wrong practice. Comparing a general practice to the 50% to 60% specialty band in the Private Practice Research data is how a perfectly healthy GP gets talked into a cost war it didn't need. Third version: mixing denominators. The 62% figure is stated against production, while payroll benchmarks of 22% to 26% and 25% to 30% are stated against collections. If your collections run 96% of production, your own ratio moves two points just from which line you divide by. Pick one denominator, write it down and never switch mid-argument.

A 3.5-Point Spread Is Erosion, Not Drift

This is where the 62% actually matters, and it has nothing to do with supply orders. The ADA Health Policy Institute reports that over a five-year stretch, dental practice revenues rose 1.4% while expenses rose 4.9%, a fiscal squeeze that has been grinding on general-practice net income. Average GP net income was $215,320 in 2025.

Run that spread through our $1,000,000 practice. Revenue goes to $1,014,000. Expenses go to $650,380. Overhead is now 64.1%. The owner's share falls from $380,000 to $363,620, a $16,380 pay cut for working the same year.

Use Drift vs. Erosion on that. Drift is small, steady, recoverable, and you manage it operationally: a supply line creeping up three tenths of a point, a bit of slippage in your lab mix. Erosion is structural and compounding, and it requires renegotiation, repricing or exit. A 3.5-point gap between revenue growth and expense growth, sustained for five years, is erosion. Wage markets reset and don't come back. Rent escalators are contractual. PPO fee schedules that haven't moved in four years are, in real terms, an annual fee cut you agreed to in writing.

Treating erosion as drift is the expensive mistake, and it's the default behavior of a practice that only reviews costs. You cannot cost-manage your way out of a frozen fee schedule. You reprice, you change payer mix, or you leave the plan.

$150,000 a Chair Is a Rent Problem, Not a Cost Problem

Here's a way to find out whether you have a cost problem or a density problem in about ninety seconds. Divide your annual collections by your number of operatories.

For a reference point, the Practice Market Index, The Dental Signal's own dataset built from dental practice broker listings, shows median collections per operatory of $200,000 (middle half $146,875 to $268,708, n=643), on a median of 5 operatories (n=754) and median collections of $957,588 (n=753). Important caveat: those are practices listed for sale, the asking side of the market, not a cross-section of all practices. Treat it as a market reference, not a national average.

Still, the arithmetic is instructive. A six-operatory practice collecting $900,000 is running $150,000 per chair. At $200,000 a chair it would collect $1,200,000. That's $300,000 of production sitting unbuilt inside walls, utilities, insurance and software you are already paying for in full. At an 84% marginal margin on the time-based portion of cost, the top end of that gap is worth more than most owners' entire cost-reduction history.

That practice does not have a 62% overhead problem. It has two dark rooms.

Which Lines to Renegotiate and Which to Leave Alone

Not every line deserves your attention, and the ones that get it are usually the wrong ones because they're the easiest to see.

• Lab, 10% to 15% of production. Worth real work, because it's genuinely variable and it's large. Renegotiation and case-mix shifts both move it. A full point here on a $1M practice is $10,000.
• Staff payroll, 22% to 30% depending on denominator. Do not cut hours. Do audit what each staffed hour produces. The hygienist at a median $87,530 a year per the Bureau of Labor Statistics needs to be scheduled against a full column, not against a half-full one.
• Occupancy and the fixed block, 4% to 7% of production. Nearly untouchable until lease renewal, which makes it the strongest argument for filling chairs rather than trimming them.
• Supplies, 5% to 10%. Fix it once, set a target as a percentage of production, then stop thinking about it. It is a drift line. It will never be the reason you retire late.
• Reimbursement. Not an overhead line at all, which is precisely why it hides. A flat fee schedule shows up as rising overhead percentage and gets misdiagnosed as a cost problem every single time.

Four Moves Before Friday

Pull your last twelve months and sort every expense line into two columns: triggered by a procedure, or triggered by the calendar. Then calculate collections per operatory and collections per staffed clinical hour, and put both on the wall next to the overhead percentage. Pick the single emptiest column in your schedule and price what filling it one day a week would net after incremental wages, lab and supplies. If that number beats your best available cost cut, you have your answer for the quarter.

What we're watching next: whether the ADA HPI expense-growth figure keeps outrunning revenue growth in the next reporting cycle, and whether wage pressure on hygiene stabilizes or resets again. If hygienist pay jumps another 8% while PPO schedules stay frozen, the capacity argument in this piece gets harder and the repricing argument gets louder. That would change our emphasis, not our view.

If you want to see where your own 62% actually sits and which lines are drifting versus eroding, you can run your own numbers through our free overhead calculator. It splits your expenses into the time-based and procedure-based blocks described above, benchmarks each category against the ranges in this piece, and shows what one more productive day a week would be worth in your practice specifically.