Your overhead ratio is total operating expenses divided by collections. It tells you what share of every dollar you collect gets consumed before you are paid, and on its own it tells you almost nothing about why. It is a symptom. The diagnosis lives in the category breakdown underneath it.

The only overhead figure worth managing is your own, calculated the same way every month. Comparison to outside numbers wastes time, because two people using the phrase rarely mean the same thing.

What belongs in the calculation?

Decide once, write it down, and never change it mid-year.

The common approach excludes owner compensation and profit distributions, on the logic that overhead measures what it costs to run the practice rather than what the owner takes home. It also excludes loan principal, which reduces a balance sheet liability rather than paying for operations, though interest is an operating cost.

Then split expenses into categories you can act on:

• Staff — wages, payroll taxes, benefits, training
• Clinical supplies
• Lab
• Facility — rent or mortgage interest, utilities, maintenance
• Marketing
• Administrative — software, insurance, professional fees, merchant fees, dues
• Associate compensation, where it applies

Your own trend within each category is the useful signal. Where a category sat last quarter, and the quarter before, is a comparison you can trust because you built both numbers the same way.

Why can a rising overhead ratio mean nothing is wrong?

Because the denominator moves too. A ratio can worsen purely because collections fell, even if every expense held perfectly steady.

This is the most common misreading in practice finance. A slow stretch, a hygienist out on leave, a fee schedule that changed, a doctor taking more time off: each pushes the ratio up without a dollar of new spending.

The reverse also happens. Add a high-fee service line and the ratio can improve while actual costs climb. Feeling better is not the same as being better.

Track dollars beside ratios. If supplies rose as a share of collections while supply dollars stayed flat, you have a production question, not a purchasing question. Those two problems have nothing in common and no shared solution.

What actually moves the number?

Three things, and they are the same three in nearly any practice: the staffing model, production per clinical hour, and fee schedule and payer mix.

Staff cost is usually the largest line and the one owners examine least honestly, because it is tangled up with loyalty and history. The question is not whether your team is worth what you pay them. It is whether the schedule generates enough production to support the hours you are staffing.

Production per hour is the underused lever. Much of overhead is fixed. Rent, software, insurance, and a good deal of your staffing cost do not care whether the day was light or full. Filling the schedule spreads the same fixed cost across more revenue.

Payer mix sits underneath both. If a meaningful share of your production is billed at negotiated rates nobody has reviewed in years, part of your overhead problem is a fee schedule problem in costume.

How should you use the number month to month?

As a trend line, not a monthly verdict. Rolling averages over a quarter and over a year smooth out the noise from one slow month or one large purchase.

Then take a single category per quarter and actually work it. Owners who attack every line at once generally attack none. Pull the supply invoices and see what is being ordered and by whom. Map the hygiene schedule against hygiene wages. Run your highest-production procedures and check reimbursement on each.

This work is unglamorous and it compounds. Sustained improvement changes what the practice pays you, what it is worth, and how much room you have to build anything outside of it.

FAQ

Should my own pay count as overhead?
Generally it is excluded, so the ratio measures the cost of operating the business independent of what the owner earns. If you produce clinically, some owners separately model a market-rate associate figure against their own production to see what the practice earns purely as a business.

Why does my number look different from what I hear elsewhere?
Usually because the calculation differs, not the practice. Check whether the figures being compared include owner pay, loan principal, or one-time capital purchases, and whether the practice models even resemble each other. Consistency with your own prior months is the comparison that pays.

Does adding an associate raise or lower overhead?
As a ratio it tends to rise, because associate compensation is a new expense line. As dollars of profit it can improve, since the added production spreads fixed costs. This is a clear case where the ratio and the outcome move in opposite directions, so watch both.