Utilisation: what a treatment room earns per hour
Nearly every cost in a spa is fixed against a number of available hours. Rent does not care whether the room is occupied. So the number that governs the business is what an available hour actually earns.
The three numbers
| Metric | Definition | What it tells you |
|---|---|---|
| Utilisation | Booked hours ÷ available hours | Whether demand fills the capacity you are paying for |
| Revenue per available hour | Service revenue ÷ available hours | Price and utilisation combined — the headline number |
| Revenue per booked hour | Service revenue ÷ booked hours | Effective price after discounts, packages and comps |
The pair matters more than either alone. High utilisation with low revenue per booked hour means you are busy and cheap. High revenue per booked hour with low utilisation means you are expensive and empty. Both look like a problem in the same place — the bank — and they need opposite responses.
Defining available hours honestly
This is where the metric usually breaks. Available hours are the hours a room could be sold, not the hours someone was rostered.
- Count the hours the location is open, per treatable room.
- Subtract genuine turnover and cleaning time between appointments if the room cannot be sold during it.
- Do not subtract unstaffed hours. If a room sits empty because nobody was scheduled, that is exactly the gap you are trying to see.
- Count rooms that are out of service for a full period separately, so a broken device does not quietly improve the metric.
If the denominator only counts hours a provider was rostered, utilisation approaches 100% and the number stops telling you anything.
Cut it three ways
- By room. Reveals capacity that is not being sold, and whether the fourth room was a good idea.
- By provider. Reveals a genuine spread — some providers rebook at twice the rate of others, which shows up here before it shows up anywhere else.
- By day and hour. Reveals the shape of demand, which is what promotions and staffing should be built around.
What moves it
| Lever | Effect |
|---|---|
| Rebooking at checkout | The largest single lever in most spas, and free. A provider who rebooks 60% of clients before they leave has a different calendar from one who rebooks 20%. |
| No-show and late-cancel policy | An unfilled slot inside 24 hours is lost capacity, not lost revenue. Card on file and a stated policy recover most of it. |
| Treatment length vs. price | A 90-minute service at 1.4x the 60-minute price earns less per hour. Check the ladder. |
| Staffing to demand shape | Rostering evenly across a week where demand is not even guarantees idle rooms on the light days. |
| Turnover time | Ten minutes shaved off a room turn across eight appointments is most of a ninth. |
Frequently asked
What is a good utilisation rate?
It depends on service mix and how you count available hours, so external benchmarks are close to useless. What matters is your own trend and the spread between rooms, providers and days. A ten-point gap between your best and worst provider is worth more attention than any published average.
Should we count retail sales in revenue per hour?
No. Keep it to service revenue. Retail has its own margin profile and mixing the two hides whether the treatment side works.
How do we handle a provider who works across two rooms?
Measure both ways. Revenue per available room hour tells you whether the space is being used. Revenue per provider hour tells you whether the person is. They answer different questions and you need both.
Our booking system reports utilisation already. Is that enough?
Check what it puts in the denominator. Most booking systems compute against rostered hours, not available hours, which makes the number look far better than the business is and hides exactly the gap you want to see.
Related
Paying providers: commission, tiers and booth rent
How the common pay structures behave as the business grows, what each does to margin, and the classification question underneath all of them.
Read →Pricing, packages and what discounting really costs
How package and membership discounts flow through to margin, and why the discount that fills the calendar can be the one that empties the bank.
Read →The monthly close for a spa or medspa
A close checklist built around deferred revenue, inventory and utilisation, and the small set of numbers worth looking at when it lands.
Read →