Clinical hour cost in HOF: how to calculate it

When an orofacial harmonization (HOF) professional says "my price is low," they are usually feeling a problem they cannot measure: how much an hour of care costs. Without that number, price is intuition, and intuition tends to forget rent, staff, cleaning, software, marketing and the hours when the chair sits empty.

This guide shows how to calculate the clinical hour cost, why dividing by the truly sellable hours changes everything and how to use the number when pricing. To run the numbers directly, the clinical hour value calculator automates the steps. To see the subject from the revenue side, see revenue per clinical hour in HOF.

What goes into the clinical hour cost?

It includes the expenses that exist even when no one is treated, the fixed expenses:

What does not go in here are variable costs, which only exist when care happens: disposable materials, products, commissions, card fees and taxes on the sale. They come in later, in the procedure's price. See the difference in fixed and variable costs of an HOF clinic.

What is the formula?

The formula is simple:

Clinical hour cost = monthly fixed expenses ÷ sellable hours in the month

The error is in the denominator. Many people divide by the hours the door is open. Sellable hours are fewer, and the correct calculation starts from them.

How do you get to sellable hours?

1. Opening hours in the month (working days × hours per day).
2. Minus: hours with no professional available, vacations, congresses, meetings and training.
3. Minus: preparation time, room cleaning and administrative tasks that are not billed.
4. Minus: schedule gaps and expected no-shows, measured in your occupancy rate.
5. The result is the number of hours when there is truly a patient in the chair generating revenue.

How does occupancy change the cost?

For the same fixed expenses, each extra point of occupancy lowers the cost per hour. See the reasoning in an example marked as hypothetical, with fixed expenses of R$ 20,000.00 a month and 160 hours available:

This is the strongest argument for treating the schedule as an asset: filling empty slots changes the cost more than cutting expenses. The occupancy part is in schedule occupancy rate and the HOF clinic schedule. The idle hour has a technical name: idle capacity.

How do you use the hour cost in pricing?

With the hour cost, a procedure's price gets a structure:

1. Chair time: duration of the appointment (including preparation and guidance) × hour cost.
2. Materials: what was used, per the disposable materials cost per patient and the product cost.
3. Fees and taxes: card, invoice and taxes. See card machine fees in the procedure price.
4. Margin: what is left for the clinic to grow. See profit margin in HOF.
5. Minimum price: the sum of the items above. Any amount below this loses money.

The minimum price per procedure calculator and the price per ml and margin calculator do this sum. For volume-based reasoning, see pricing per ml. And for those who prefer to price by appointment time, there is the text on pricing by chair time.

What pitfalls show up in this calculation?

• Forgetting your own work. Without pró-labore in the cost, the clinic seems to have profit that is really salary.
• Ignoring depreciation of expensive equipment.
• Using the strong month as if it were the average month. Calculate with a 12-month average. See HOF clinic seasonality.
• Not separating long and short procedures. A 30-minute appointment and a 90-minute one consume different amounts of hour cost.
• Applying the same margin to everything. Some procedures can bear more margin than others, which shows up in the profit ranking by procedure.
• Copying the neighbor's price. The other clinic's cost is different from yours, and other people's prices are not a reliable benchmark.

How do you keep the number up to date?

Redo the calculation every quarter or when something big changes: rent, team, hours, equipment. Record the real sellable hours in a simple spreadsheet and compare them with the plan. A simple income statement for an HOF clinic helps you see, month by month, whether the planned cost is the real cost.

What if the calculated price ends up above what the local market accepts?

It is the most common situation and the one that demands the most honesty. If the minimum price exceeds what your patients usually pay, the problem is in one of these points, and each has a different answer:

Cutting the price below the minimum is financing the patient with the clinic's money. If the numbers do not add up, the path is to change the numbers, not to hide them.

How much does an hour of each professional cost?

When there is more than one professional, the per-hour split needs to respect who uses what. Two approaches:

• Cost per room: divides the expenses by the room's sellable hours, regardless of who treats patients. It works well in clinics with rotating shifts. See the room cost sharing per shift calculator.
• Cost per professional: adds the professional's direct expenses (pay, commission, own materials) to the share of the common infrastructure.

With partner professionals, the hour cost enters the discussion of the payout. See partner professional commission and rented room payouts.

Knowing the hour cost does not oblige you to charge more: it obliges you to decide with information. A clinic that knows what an hour costs makes better decisions about price, schedule and how much to discount without betraying its own margin.